Entries |
Document | Title | Date |
20080214888 | Organ Assist System and Method - An organ assist system having a closed fluid system having a ring-shaped prosthetic contactively surrounding at least a portion of a body part, including bladders adapted for selectable dilation and contraction in response to varying fluid pressure therewithin, a fluid pump, and apparatus for pressurizing the bladders; and a control unit for controlling operation of at least the fluid pump; pressure sensors within the fluid system; a power source, and shut off valves. The pressurization apparatus includes pressure cells arranged in an array, each pressure cell having a shut-off valve at its inlet, and a shut-off valve at its outlet, the shut-off valves being controlled by the control unit such that the pressurization apparatus is operable to provide a range of pressurizations to the bladders of the prosthetic for applying a controlled variable pressurizing effect to the body part thereby. | 09-04-2008 |
20080228026 | Method and apparatus for image enhanced external counterpulsation - An image enhanced external counterpulsation system may be used to monitor a continuous real-time ultrasound image of the patient's heart during ECP therapy. | 09-18-2008 |
20080242916 | Eecp Device and an Image System Comprising the Same - The present invention discloses a non-invasive rigid-support enhanced external counterpulsation device (RS-EECP) providing a precise onset of a blood flow characterized by a sharp-wave front, useful for out-patient treatment of arterial insufficiency states, especially angina; said RS-EECP comprising a timing means and a plurality of pressing cuffs; said timing means is adapted to onset the collapsing and expanding maneuvers of the cuffs in a sequence of occasions defined along the diastolic/systolic cycle; said cuffs are fastened around at least a portion of the circumference of at least one organ comprising a vascular bed to counterpulsate against an either fixed or maneuverable support; wherein said support is a rigid member; so as a quick expansion of said vessel bed, following a forceful and effective collapsing of the same is obtained. | 10-02-2008 |
20080281146 | BLOOD PUMP SYSTEM AND METHOD OF OPERATION - A blood pump system includes a blood pump having a motor with a rotor and a stator. The stator has a plurality of stator windings situated therein. A motor controller is coupled to the motor, and a processor has inputs coupled to the motor controller for receiving a time continuous signal from the pump. The processor is programmed to transform the time continuous signal to the frequency domain, and control the pump and detect excess suction in response to the time continuous signal in the frequency domain. | 11-13-2008 |
20080293997 | Chemical Sensor - A device for detecting an analyte present in a fluid includes a fluorous sensing phase into which the analyte enters selectively in comparison with other components of the fluid. | 11-27-2008 |
20090099406 | Control system for a blood pump - A method of controlling the speed of a blood pump, wherein the method includes the steps of deriving an estimated pulsatility index from speed, then deriving an estimated blood pressure from estimated pulsatility index; and maintaining target blood flow rate near to or at a preset value by adjusting the speed. | 04-16-2009 |
20090131740 | Cardiac assist system using helical arrangement of contractile bands and helically-twisting cardiac assist device - A cardiac assist system using a helical arrangement of contractile bands and a helically-twisting cardiac assist device are disclosed. One embodiment discloses a cardiac assist system comprising at least one contractile elastic band helically arrangement around a periphery of a patient's heart, where upon an actuation the band contracts helically, thereby squeezing the heart and assisting the pumping function of the heart. Another embodiment discloses a helically twisting cardiac-apex assist device comprising an open, inverted, substantially conical chamber with two rotatable ring portions of different diameters located at the base and apex of the chamber, with a plurality of substantially helical connecting elements positioned substantially flush with the chamber wall and connecting the two rotatable ring portions, whereby a relative twisting motion of the two rings causes a change in volume of the chamber thereby assisting the cardiac pumping function. | 05-21-2009 |
20090318748 | Pump for Blood Perfusion - In blood perfusion during cardiac surgery or ventricular assistance, for treating cardiac insufficiency, use is currently made of a centrifugal pump that generates a linear flow in the circulatory system, counter to the pulsating flow generated by the heart. According to the invention, a pulsating linear flow is achieved for blood perfusion by providing, in the interior wall of the chamber or casing of the pump ( | 12-24-2009 |
20090318749 | METHOD AND APPARATUS FOR PACING AND INTERMITTENT ISCHEMIA - A system delivers multiple enhanced therapies to limit myocardial damage post-revascularization. The system includes a catheter that incorporates features for delivering cardiac protection pacing therapy (CPPT) and intermittent ischemia therapy. In one embodiment, a method for delivering cardiac protection therapies to a heart is provided. One or more catheters are provided having a balloon, at least one pacing electrode and at least one hemodynamic sensor. Cardiac protection pacing therapy (CPPT) and intermittent ischemia therapy are concurrently delivered using the one or more catheters. The pacing and ischemia are adapted to protect the heart from ischemic and reperfusion injuries. The delivery of the CPPT and the intermittent ischemia are controlled using a closed-loop system monitoring a signal sensed by the at least one hemodynamic sensor. | 12-24-2009 |
20100056850 | SUPRAPATELLAR EXTERNAL COUNTERPULSATION APPARATUS - An external counterpulsation apparatus has an efficient cuff and bladder system. Embodiments of this system generally allow effective treatment at lower pressures and a reduced total body surface area being compressed. An accurate and reliable combination of automatic and preset timing for inflation and deflation of the bladder system is used to simplify use of the apparatus. | 03-04-2010 |
20100063347 | Tet system for implanted medical device - A TET system is provided which is operable to vary an amount of power transmitted from an external power supply to an implantable power unit in accordance with a monitored condition of the implantable power unit. In such way, the amount of power supplied to the implantable power unit for operating a pump, for example, can be varied in accordance with a cardiac cycle, so as to maintain the monitored condition in the power circuit within a desired range throughout the cardiac cycle. | 03-11-2010 |
20100076247 | PERMANENT VENTRICULAR ASSIST DEVICE FOR TREATING HEART FAILURE - The invention is a kit for a permanent ventricular assist device that can be permanently implanted into the circulatory system of a patient. The kit comprises one or more passive cores (Pcore), a stator, a power supply, and a controller unit. The inventors have realized that major open heart surgery, generally used for implementing a magnetic blood pump in the circulatory system, can be wholly avoided if the rotor and the stator are physically separated and are implanted respectively inside and around the blood vessel at the location of interest. Therefore the kit is characterized in that the one or more Pcores are configured to allow them to be implanted inside a blood vessel and the stator is configure to enable it to be placed outside of the blood vessel surrounding the Pcores. Also described are illustrative medical procedures for implanting the components of the kit at different locations in the body. | 03-25-2010 |
20100121133 | Apparatus and methods for measuring pressure and flow in cardiac assist devices and peripheral vasculature - Disclosed are apparatus and methods for measuring pressure and/or flow in blood circulatory systems of a patient using cardiac assist devices. By way of example, a left ventricular assist device may be coupled between the left ventricle of the patient's heart and the aorta. One or more sensors, such as pressure sensors, are located at one or more selected locations in the heart, in blood-carrying conduits that are coupled to the cardiac assist device, or in the aorta, that sense pressure, for example, to monitor a patient's cardiac function. A monitoring device is coupled to the sensors that implements an algorithm that determines pressure and/or blood flow rate in the circulatory system using pressures and/or flow data derived from the sensors. | 05-13-2010 |
20100130810 | Implantable device for the intermittent occlusion of blood vessel - An implantable device for the intermittent occlusion of a blood vessel ( | 05-27-2010 |
20100152526 | Blood pump device and method of producing - A pumping system for blood for a patient includes a sensorless pump having no sensors disposed in the pump itself for moving the blood, a motor and a blood transport port through which blood is received from the patient and is pumped into the patient. The system also includes a controller connected to the pump for controlling the pump so a desired flow rate of blood can be maintained by the pump. | 06-17-2010 |
20100179374 | Method and Apparatus for Treating a Heat Condition - The present invention relates to a method and apparatus for the treatment of a heart condition such as angina and/or congestive heart failure. Conditions such as angina, caused by inadequate blood flow to the coronary arteries, are treated in this invention by implantation of smooth muscle tissue wrapped around the ascending aorta. The smooth muscle tissue is stimulated electrically, by the implanted stimulator, to contract at timed intervals relative to the hearts' cycle. The contraction assists blood flow to the coronary vessels. | 07-15-2010 |
20100204539 | PULSATILE BLOOD PUMP - There is provided a pulsatile blood pump ( | 08-12-2010 |
20100222637 | SYSTEMS AND METHODS FOR SELECTIVE AUTO-RETROPERFUSION OF THE CEREBRAL VENOUS SYSTEM - Methods for delivering a bridge retroperfusion therapy are disclosed such that, after the onset of a stroke or other adverse cerebral event, the brain cells' window of viability may be extended and other treatments, including pharmaceutical and neuroprotective therapies, may be more effectively utilized. Kits comprising devices and systems for delivering such retroperfusion and autoretroperfusion methods are also disclosed. In certain embodiments, the kits comprise a catheter and a flow unit configured to adjust the flow rate and pressure of the arterial blood used for perfusion of the venous system. | 09-02-2010 |
20100305392 | THORACIC AORTA AND VAGUS NERVE STIMULATION - Apparatus and methods are described including identifying a subject as suffering from a condition selected from the group consisting of congestive heart failure, diastolic heart failure, and hypertension. In response to the identifying, an electrode is placed on a vagus nerve of the subject at a vagal site that is between (a) a vagal bifurcation with a thoracic cardiac branch of the subject, and (b) thoracic vagal branching into the esophageal plexus of the subject. The subject is treated by driving a current into the vagal site, via the electrode. Other embodiments are also described. | 12-02-2010 |
20110015465 | CONTROL SYSTEMS FOR ROTARY BLOOD PUMPS - The present invention generally relates to a control system for a rotary blood pump adapted to move blood in a patient. The control system comprises a means for measuring and varying the speed of the pump and a means for measuring the pulsatility index of a patient, and the control system is adapted to maintain the pulsatility index at or near a predetermined value by varying the speed of the pump. The pulsatility index is derived from the amplitude of the actual pump speed over a predetermined time period. Optionally, also, the control system can calculate the second derivative of instantaneous speed of the rotary blood pump and use the calculation of the second derivative of instantaneous speed to detect a suction event, and help prevent it. | 01-20-2011 |
20110118537 | METHODS AND DEVICES FOR TREATING HEART FAILURE - Systems and methods for delivering a miniaturized blood pump configured to draw partially desaturated blood via the femoral vein from the inferior or superior vena cava. A cannula connected to the pump exits the femoral vein and is connected to the femoral artery with a cannula or vascular graft. The pump receives power from a percutaneous lead which runs parallel to the flexible cannula and then exits via a percutaneous opening in the skin. The pump in the venous system removes venous blood and pumps it into the femoral artery. In so doing pressure in the aorta is increased and back pressure in the venous system is decreased. | 05-19-2011 |
20110124951 | VESSEL OR SAC WALL TREATMENT AND A CARDIAC ASSIST DEVICE - The present invention provides a method of treating a vessel in a human or animal body, said method including the steps of: preparing a patient; identifying a site in said vessel requiring treatment; positioning an implantable device against a portion of tubular or sac wall of said vessel at said site, whereby load applied to said vessel is borne by said wall and said device, said vessel being assisted by said device when said wall and said device acts upon said load, said device including an energy storage means which is charged with a pressure or energy charge by means of said load being applied to said vessel. | 05-26-2011 |
20110160519 | ROTATIONAL PUMP AND METHODS FOR CONTROLLING ROTATIONAL PUMPS - A rotational pump capable of running at a rotational speed (n) having a system for direct or indirect measurement of pressure difference or flow rate across the pump, wherein a control system is designed to calculate an index of pulsatility (PI) of the pressure difference or flow rate, estimating the gradient of PI with respect to the rotational speed (dPI/dn) and regulating the dPI/dn to a pre-defined set-point or regulating the pump in a way that the dPI/dn is minimal. | 06-30-2011 |
20110196193 | HEART HELP DEVICE, SYSTEM AND METHOD - An implantable heart help device adapted for implantation in a human patient is provided. The device comprising a fixating member adapted to fixate said device to a part of the human body comprising bone. Further a method of fixating an implantable heart help device in a human patient is provided. The method comprises the steps of: cutting the skin of said human patient, dissecting an area of the body comprising bone, and fixating said implantable heart help device to said part of the body comprising bone. | 08-11-2011 |
20120004497 | Physiological Demand Responsive Control System - A demand responsive physiological control system for use with a rotary blood pump; said system including a pump controller which is capable of controlling pump speed of said pump; said system further including a physiological controller, and wherein said physiological controller is adapted to analyze input data relating to physiological condition of a user of said pump; and wherein said physiological controller determines appropriate pumping speed and sends a speed control signal to said pump controller to adjust pump speed; said system further including a physiological state detector which provides said input data indicative of at least one physiological state of said user, in use, to said physiological controller. | 01-05-2012 |
20120016179 | NON-INVASIVE DEVICE FOR SYNCHRONIZING CHEST COMPRESSION AND VENTILATION PARAMETERS TO RESIDUAL MYOCARDIAL ACTIVITY DURING CARDIOPULMONARY RESUSCITATION - A method for improving the cardiac output of a patient who is suffering from pulseless electrical activity or shock and yet still displays some myocardial wall motion including sensing myocardial activity to determine the presence of residual left ventricular pump function having a contraction or ejection phase and a filling or relaxation phase. In such cases, a compressive force is repeatedly applied to the chest based on the sensed myocardial activity such that the compressive force is applied during at least some of the ejection phases and is ceased during at least some of the relaxation phases to permit residual cardiac filling, thereby enhancing cardiac output and organ perfusion. Also incorporated may be a logic circuit capable of utilizing multiple sensing modalities and optimizing the synchronization pattern between multiple phasic therapeutic modalities and myocardial residual mechanical function. | 01-19-2012 |
20120041256 | APPARATUS FOR PROVIDING SHORT-TERM CARDIAC SUPPORT - An apparatus provides short-term cardiac support after cardiac surgery using a cardiopulmonary bypass (CPB) pump (or heart-lung machine) having a pump coupled to a pump controller for pumping oxygenated blood through a cannula into the patient The pump controller controls the pump in a first mode to generate pulsatile flow of the oxygenated blood to the patient, and in a second mode to provide counter-pulsatile flow of blood through the cannula synchronized with the heart of the patient, whereby, when the heart of the patient is in diastole, the pump forces blood from the cannula into the patient, and when the heart is in systole, the pump removes blood from the patient via the cannula. | 02-16-2012 |
20120130153 | PORTABLE CONTROLLER WITH INTEGRAL POWER SOURCE FOR MECHANICAL CIRCULATION SUPPORT SYSTEMS - A portable external device for a mechanical circulation support system includes first and second power sources, e.g. batteries and control electronics for redundant uninterrupted operation of an implantable blood pump. The control and power source module may be configured to accommodate a variety of wearable configurations for patient convenience and comfort. | 05-24-2012 |
20120142998 | ARTIFICIAL HEART DEVICE - An artificial heart device includes: a blood pump which assists flow of blood in a heart; a blood pump control part which controls the blood pump; a first data processing part which performs first data processing on at least one data in a first period out of operation data on the blood pump, operation data on a cool sealing unit which circulates lubrication fluid in the blood pump, biological data corresponding to a state of a patient and operation data on a battery; and a TR data storing part which stores data after the first data processing in association with date-and-time data corresponding to date and time at which the data is stored each time the first period elapses, wherein the data stored in the TR data storing part is retrievable. | 06-07-2012 |
20120149970 | INTRA-AORTIC BALLOON PUMP ASSEMBLY FOR VENTRICULAR ASSIST DEVICE - Devices and methods are disclosed for implanting, positioning, removing, replacing and operating intra-aortic balloon pumps. | 06-14-2012 |
20120149971 | VENTRICULAR ASSIST DEVICE - Devices and methods are disclosed for implanting, positioning, removing, replacing and operating intra-aortic balloon pumps. | 06-14-2012 |
20120190913 | Method and Device for Intermittent Occlusion of a Vein Draining the Organ System - In a method for the intermittent occlusion of a vein draining the organ system, in which the vein is occluded by an occlusion device, the fluid pressure in the occluded vein is continuously measured and stored, the behavior of the fluid pressure is determined as a function of time, and the occlusion of the vein is triggered and/or released as a function of at least one characteristic value derived from the pressure measurements, pressure is applied during the occlusion in a pulsating manner. The device for the intermittent occlusion of a vein, including an occlusion device, a pressure measuring device for continuously measuring the fluid pressure in the occluded vein, and a memory for storing the fluid pressure behavior as a function of time, means are provided for applying a pulsating pressure in the occluded vein. | 07-26-2012 |
20120245405 | Extracorporeal Pumping Methods - An extracorporeal pumping method includes receiving an inlet fluid into a compressible-expandable bladder sealably mounted within a housing and moving an actuating member mounted within a fluid chamber of a hydraulic actuating sub-assembly. A pressure transmissive fluid is displaced from the fluid chamber into the housing. The method includes compressing a volume of the bladder in the housing the transmissive fluid displaced into the housing, the compressed bladder ejecting the inlet fluid from the bladder to provide an outlet fluid under pulsatile pressure. The actuating member is moved within the fluid chamber and the displaced transmissive fluid is returned from the housing into the fluid chamber. The method includes expanding the compressed bladder in the housing and receiving additional inlet fluid into the bladder. The movement of the actuating member is controlled such that the outlet fluid exhibits a predetermined pulse rate, stroke volume, and upstroke rise time. | 09-27-2012 |
20120283506 | CARDIAC ASSISTANCE DEVICE AND METHOD FOR THE CONTROL THEREOF - The invention relates to a cardiac assistance device having a supporting component (14) which surrounds the heart and on the inside of which a plurality of adjacent inflatable and deflatable chambers (126, 226, 326) are provided, via which an inside wall can be displaced inward, the chambers (126, 226, 326) having a fluidic connection to at least one pump (80) via lines. A plurality of supply valves on the supply side are arranged between the pump (80) and the chambers (126, 226, 326). At least individual chambers (126, 226, 326) or groups of chambers (126, 226, 326) are assigned dedicated supply valves, in order to drive the chambers (126, 226, 326) independently individually or in groups. | 11-08-2012 |
20120310037 | VENTRICULAR ASSIST DEVICE CANNULA AND VENTRICULAR ASSIST DEVICE INCLUDING THE SAME - Provided is a ventricular assist device cannula, and more particularly, a ventricular assist device cannula with electrodes. An exemplary embodiment of the present invention provides a ventricular assist device cannula with electrodes, including: a connecting tube connecting an incision of a body tissue and a ventricular assist device so that blood can flow; and electrodes connected with the connecting tube and contacting the incision of the body tissue to transfer an electric signal to the body tissue. | 12-06-2012 |
20120323065 | METHOD AND DEVICE FOR THE INTERMITTENT OCCLUSION OF THE CORONARY SINUS - In a method for intermittently occluding the coronary sinus, in which the coronary sinus is occluded using an occlusion device, the fluid pressure in the occluded coronary sinus is continuously measured and stored, the fluid pressure curve is determined as a function of time, and the occlusion of the coronary sinus is triggered and/or released as a function of at least one characteristic value derived from the measured pressure values. The pressure increase and/or pressure decrease per time unit each occurring at a heart beat are used as characteristic values. | 12-20-2012 |
20130030240 | FLOW ESTIMATION IN A BLOOD PUMP - The flow rate of blood out of a blood pump is determined at least in part based on an acceleration of the pump's rotor and on the blood's viscosity. Considering the rotor acceleration when determining blood flow rate, increases the accuracy of the blood flow measurement thereby permitting the determination of a parameter related to the contractility of a patient's heart. The parameter may include a rate of pressure change of blood across the pump, a ratio of the rate of pressure change and a peak-to-peak value of the blood flow rate, or any other contractility index. | 01-31-2013 |
20130041204 | CONTROL OF BLOOD FLOW ASSIST SYSTEMS - In one aspect, an implantable pump system for assisting blood flow in a patient includes a blood flow path comprising a flexible conduit, at least one valve in fluid connection with the flexible conduit, a drive system in operative connection with the valve to move the valve in a reciprocating manner, an implantable control system and at least one sensor in communicative connection with the control system. The sensor is adapted to measure at least one property of blood. The control system is adapted to control movement of the valve on the basis of data regarding position of the valve with respect to time or a derivative thereof (that is, position, velocity, acceleration or a derivative thereof) in combination with data of the measured at least one property of blood from the sensor. | 02-14-2013 |
20130066141 | IMPLANTABLE CARDIAC THERAPY DEVICE - An implantable cardiac therapy device having a heart assist pump, a stimulation unit, and a control unit. The heart assist pump is designed to be connected to a ventricle of a heart and an associated artery, and is designed to pump blood from a particular ventricle into an associated artery, thereby supporting the particular ventricle. The stimulation unit is designed to electrically stimulate a heart contraction, and the control unit is designed to control the heart assist pump and the stimulation unit in such a way that the stimulation unit induces synchronized motions of cardiac contraction while the heart assist pump operates in a ventricle-supporting manner. | 03-14-2013 |
20130066142 | IMPLANTABLE CARDIAC THERAPY DEVICE - A cardiac therapy device having a cardiac assist pump, a defibrillation unit, and a control unit, which is connected to the cardiac assist pump and the defibrillation unit to control them. The cardiac assist pump is implemented in case of use to pump blood from a ventricle into an associated artery and thus relieve the respective ventricle. The defibrillation unit is implemented for automatic defibrillation of a ventricular fibrillation and the control unit is implemented to activate the cardiac assist pump and the defibrillation unit in a coordinated manner in case of a ventricular fibrillation such that the cardiac assist pump first increases its performance to initially cause a pressure relief of at least one assisted ventricle in case of use and the defibrillation unit only subsequently delivers a defibrillation shock, when a ventricular pressure relief is provided. | 03-14-2013 |
20130144110 | APPARATUS AND METHOD FOR MONITORING AND CONTROLLING EXTRACORPOREAL BLOOD FLOW RELATIVE TO PATIENT FLUID STATUS - A system and method for controlling extracorporeal blood flow in a patient. The system includes a blood pump having a rotor, a plurality of rollers carried by the rotor and a pump chamber extended in tension about the rollers. A sensor measures an operating parameter of the blood pump and a controller, coupled to the sensor, calculates the flow efficiency of the blood pump based on the measured operating parameter. The controller is further configured to display the flow efficiency on the display device, and the operation of the blood pump is adjusted based on the flow efficiency when necessary. | 06-06-2013 |
20130165736 | System And Method For Treating Heart Tissue - Some embodiments of a system or method for treating heart tissue can include a control system and catheter device operated in a manner to intermittently occlude a heart vessel for controlled periods of time that provide redistribution of blood flow. In particular embodiments, the system and methods may be configured to monitor at least one input signal detected at a coronary sinus and thereby execute a process for determining a satisfactory time period for the occlusion of the coronary sinus. In further embodiments, after the occlusion of the coronary sinus is released, the control system can be configured to select the duration of the release phase before the starting the next occlusion cycle. | 06-27-2013 |
20130184515 | DOUBLE BALLOON PUMP CARDIAC ASSIST DEVICE AND RELATED METHOD OF USE - A system and method for cardiac assist of a heart in a beating stage comprising a double balloon catheter having a proximal end and a distal end, the catheter having at least one lumen; an inflatable intra-ventricular balloon mounted on the catheter near the distal end of the catheter, the balloon having a lumen in fluid communication with the lumen of the catheter and being configured for inflation in a ventricle; and an intra-aortic balloon mounted on the catheter proximally to the intra-ventricular balloon; a control unit comprising a bidirectional pump; a fluid reservoir; and a processor configured to activate the pump; wherein the proximal end of the catheter is configured for attachment to the control unit to form a fluid conduction system in which fluid is configured to be pumped by the pump between the fluid reservoir and the intra-ventricular balloon and the intra-aortic balloon; and systolic augmentation comprising a new pressure wave which is generated when said balloon is inflated at the end of the slow ejection phase of the beating heart, such that any residual volume of blood left in said ventricle is displaced. | 07-18-2013 |
20130267764 | BLOOD FLOW METER - Materials and methods related to blood pump systems are described. These can be used in patients to, for example, monitor arterial pressure, measure blood flow, maintain left ventricular pressure within a particular range, avoid left ventricular collapse, prevent fusion of the aortic valve in a subject having a blood pump, and provide a means to wean a patient from a blood pump. | 10-10-2013 |
20130281761 | CANNULA WITH BIFURCATED TIP FOR A CARDIAC ASSIST DEVICE - A cardiac assist device includes a cannula that terminates in a flexible tip. The tip is generally Y-shaped and includes a proximal end that extends from the end of the cannula, and a bifurcated distal end opposed to the proximal end. The bifurcated distal end includes a first portion detached from a second portion, and the tip further includes a pair of through channels extending from the proximal end to the bifurcated distal end. The tip is configured so that one channel of the pair of channels extends through the first portion, and the other channel of the pair of channels extends through the second portion. | 10-24-2013 |
20130281762 | Ventricular Assist Device and Method - A ventricular assist device includes a stent for placement within a cardiac artery and arranged for placement, the stent arranged to have an open configuration defining a flow path, a rotor sized to fit within the stent and arranged for percutaneous placement the flow path, the rotor including a surface disposed about a central portion and angled with respect to the flow path and having a first plurality of magnets. A collar is sized for placement about the cardiac artery and includes a stator. A power source is coupled to the stator, and the stator and the rotor are arranged to rotate the rotor about an axis. A timing control module controls a rotational speed of the rotor. Accordingly, the surface of the rotor is arranged to move blood along the flow path in response to rotation of the rotor. | 10-24-2013 |
20130289337 | NON-INVASIVE DIAGNOSTICS FOR VENTRICLE ASSIST DEVICE - A circulatory assist system has a pump with a motor coupled to rotate the pump at a selectable speed. A controller drives the motor at a target speed and collects blood flow measurements during operation of the pump. An impaired flow condition is identified when a plurality of successive blood flow measurements are between an expected minimum flow and a low flow threshold, such that the low flow would necessitate issuing an alert. During the impaired flow condition, it is detected whether an inflow obstruction exists by determining whether a reduction in speed of the pump is correlated with a predetermined increase in the blood flow measurements. If the inflow obstruction is detected, then the speed of the pump is further reduced to further increase the blood flow measurements. | 10-31-2013 |
20130317284 | Method and Device for Intermittent Occlusion of a Vein Draining the Organ System - In a method for the intermittent occlusion of a vein draining the organ system, in which the vein is occluded by an occlusion device, the fluid pressure in the occluded vein is continuously measured and stored, the behavior of the fluid pressure is determined as a function of time, and the occlusion of the vein is triggered and/or released as a function of at least one characteristic value derived from the pressure measurements, pressure is applied during the occlusion in a pulsating manner. The device for the intermittent occlusion of a vein, including an occlusion device, a pressure measuring device for continuously measuring the fluid pressure in the occluded vein, and a memory for storing the fluid pressure behavior as a function of time, means are provided for applying a pulsating pressure in the occluded vein. | 11-28-2013 |
20130345493 | CARDIAC SUPPORT SYSTEMS AND METHODS FOR CHRONIC USE - A high efficiency cardiac support system is suitable for chronic use in treating heart failure, wherein the system includes an implantable rotary blood pump, an implantable power module, a wireless power transfer subsystem, a patient monitor, and a programmer. In a cardiac support system, the cumulative efficiencies of the components of the system are capable of providing therapeutically effective blood flow for a typical day of awake hours using the energy from a single wireless recharge of an implanted rechargeable energy source. Moreover, the implantable rechargeable energy source may be recharged during a normal sleep period of 8 hours or less. The system may provide full or partial cardiac support without the need for external wearable batteries, controllers, or cables. | 12-26-2013 |
20140012067 | PREVENTION OF AORTIC VALVE FUSION - Materials and methods related to blood pump systems are described. These can be used in patients to, for example, monitor arterial pressure, measure blood flow, maintain left ventricular pressure within a particular range, avoid left ventricular collapse, prevent fusion of the aortic valve in a subject having a blood pump, and provide a means to wean a patient from a blood pump. | 01-09-2014 |
20140051908 | Hemodynamic Assist Device - A hemodynamic flow assist device includes a miniature pump, a basket-like cage enclosing and supporting the pump, and a motor to drive the pump. The device is implanted and retrieved in a minimally invasive manner via percutaneous access to a patient's artery. The device has a first, collapsed configuration to assist in implantation and a second, expanded configuration once deployed and active. The device is deployed within a patient's aorta and is secured in place via a self-expanding cage which engages the inner wall of the aorta. The device includes a helical screw pump with self-expanding blades. Also included is a retrieval device to remove the hemodynamic flow assist device once it is no longer needed by the patient. Also included is an arterial closure device to close the artery access point after implantation and removal of the hemodynamic flow assist device. The hemodynamic flow assist device helps to increase blood flow in patients suffering from congestive heart failure and awaiting heart transplant. | 02-20-2014 |
20140051909 | Synchronization Control System - The various embodiments herein relate to systems and methods for controlling the operation of a pulsatile heart assist device in a patient. The systems and methods include utilizing sounds and electrical signals produced by the heart to control the operation of the heart assist device. | 02-20-2014 |
20140058190 | SYSTEM AND METHOD FOR CONTROLLING PUMP - Systems and methods including a motor or electromagnets to control the movement of one or more pistons in a pumping chamber. The pumping chamber may include a pump inlet and a pump outlet in fluid communication with the pumping chamber. Surfaces on a piston or pumping chamber may include hydrodynamic bearing surfaces. | 02-27-2014 |
20140073839 | TET SYSTEM FOR IMPLANTED MEDICAL DEVICE - A TET system is operable to vary an amount of power transmitted from an external power supply to an implantable power unit in accordance with a monitored condition of the implantable power unit. The amount of power supplied to the implantable power unit for operating a pump, for example, can be varied in accordance with a cardiac cycle, so as to maintain the monitored condition in the power circuit within a desired range throughout the cardiac cycle. | 03-13-2014 |
20140135567 | Dual-Balloon Cardiac Pump - A dual-balloon cardiac pump comprises a flexible catheter tube in pneumatic communication with inflatable ventricular and aortic balloons, which are inflated and deflated in accordance with a programmed sequence of pressurized inert gas into the catheter tube as regulated by a control unit. The programmed sequence rapidly inflates and deflates the ventricular balloon after left ventricular contraction is completed. The programmed sequence inflates the aortic balloon after the aortic valve closes and deflates it just before the next systolic cycle begins. | 05-15-2014 |
20140135568 | HEART HELP DEVICE, SYSTEM, AND METHOD - An implantable device for improving the pump function of the heart of a human patient by applying an external force on the heart muscle is provided. The device comprises at least one pump device having a pump. The pump comprising: a piston adapted for reciprocating movement, an operating device for operating the piston, a heart contacting organ. The movement of the piston assists the pump function of the heart through said heart contacting organ. | 05-15-2014 |
20140142367 | CONTROL SYSTEMS FOR ROTARY BLOOD PUMPS - The present invention generally relates to is control system for a rotary Wood pump adapted to move blood in a patient. The control system comprises a means for measuring and varying the speed of the pump and a means for measuring the pulsatility index of a patient, and the control system is adapted to maintain the pulsatility index at or near a predetermined vitae by varying the speed of the pump. The pulsatility index is derived from the amplitude of the actual pump speed over a predetermined time period. Optionally, also, the control system can calculate the second derivative of instantaneous speed of the rotary blood pomp and use the calculation of the second derivative of instantaneous speed to detect a suction event, and help prevent it. | 05-22-2014 |
20140148639 | Combination Heart Assist Systems, Methods, and Devices - The various embodiments disclosed herein relate to combination heart assist systems, methods, and devices that include both an electrical therapy device and a mechanical heart assist device. Various operational modes can be implemented using these embodiments, including a synchronized pacing mode, an internal CPR mode, and an internal workout mode. | 05-29-2014 |
20140194671 | HEART SHEATH SYSTEM AND METHOD OF USE - A method of sheathing a heart including inserting an expandable heart sheath into a living body with the sheath held in a collapsed state. The sheath is released to allow the sheath to expand inside the body. At least a portion of the heart within the body is surrounded by the expanded sheath. The method of forming a custom heart sheath includes determining a three-dimensional outer surface of a particular heart, determining a desired three-dimensional shape of a sheath for the particular heart, as a function of a shape of the determined outer surface of the heart and then forming a custom heart sheath to have the desired three-dimensional shape. | 07-10-2014 |
20140194672 | SUPPORTING A HEART - A heart support system featuring a constraint sized to fit about at least a portion of an adult human heart in a living body, an expandable chamber disposed within the constraint so as to apply pressure against the heart when expanded and a connector system including a pneumatic connection port in hydraulic communication with the expandable chamber. The heart support system can include a supply unit with: a source of pressurized fluid and a pneumatic supply line extending from the pressurized fluid source. The pneumatic supply line is connectable to the pneumatic connection port. | 07-10-2014 |
20140221727 | METHODS, DEVICES AND SYSTEMS FOR COUNTERPULSATION OF BLOOD FLOW TO AND FROM THE CIRCULATORY SYSTEM - Counterpulsation methods and systems for assisting the heart of a patient involve, for example, coordinating the operation of a pulsatile pump to suction blood from an artery through a blood flow conduit while the heart is in systole and expel the blood into the blood flow conduit and the artery while the heart is in diastole. | 08-07-2014 |
20140235931 | Generating Artificial Pulse - In order to produce a pulsatile blood flow pattern that includes time periods of relatively high blood flow rates and time periods of relatively low blood flow rates, the operating speed of a blood pump can be selectively controlled to produce an operating speed pattern that includes time periods of relatively high rotation speeds and periods of relatively low rotation speeds. For example, the blood pump is rotated at a first speed for a first period of time. The speed of the blood pump is then decreased from the first speed to a second speed and is operated at the second speed for a second amount of time. The speed of the blood pump is then decreased to a third speed for a third amount of time. If desired, the operating speed pattern can be repeated to continue the pulsatile blood flow pattern. | 08-21-2014 |
20140275727 | Implantable Heart Pump Controller - The present invention provides devices, systems, and methods for control of ventricular assist devices. The invention includes an implantable controller that is operatively programmed to direct physiological flow through a ventricular assist device that is substantially synchronized to the cardiac cycle of the subject. The implantable controller is also communicatively connected to an external control unit, such that the implantable controller can transmit data to the external control unit, and instructions can be sent from the external control unit to the implantable controller. | 09-18-2014 |
20140296615 | BLOOD PUMP SYSTEMS AND METHODS - A blood pump system for persistently increasing the overall diameter and lumen diameter of peripheral veins and arteries by persistently increasing the speed of blood and the wall shear stress in a peripheral vein or artery for a period of time sufficient to result in a persistent increase in the overall diameter and lumen diameter of the vessel is provided. The blood pump system includes a blood pump, blood conduit(s), a control system with optional sensors, and a power source. The pump system is configured to connect to the vascular system in a patient and pump blood at a desired rate and pulsatility. The pumping of blood is monitored and adjusted, as necessary, to maintain the desired elevated blood speed, wall shear stress, and desired pulsatility in the target vessel to optimize the rate and extent of persistent increase in the overall diameter and lumen diameter of the target vessel. | 10-02-2014 |
20140323796 | CARDIAC PUMP WITH SPEED ADAPTED FOR VENTRICLE UNLOADING - A blood pump system is implantable in a patient for ventricular support. A pumping chamber has an inlet for receiving blood from a ventricle of the patient. An impeller is received in the pumping chamber. A motor is coupled to the impeller for driving rotation of the impeller. A motor controller is provided for tracking systolic and diastolic phases of a cardiac cycle of the patient and supplying a variable voltage signal to the motor in a variable speed mode to produce a variable impeller speed linked to the cardiac cycle. The impeller speed comprises a ramping up to an elevated speed during the diastolic phase in order to reduce a load on the ventricle at the beginning of the systolic phase. | 10-30-2014 |
20140343352 | ROTATIONAL PUMP AND METHODS FOR CONTROLLING ROTATIONAL PUMPS - A rotational pump capable of running at a rotational speed (n) having a system for direct or indirect measurement of pressure difference or flow rate across the pump, wherein a control system is designed to calculate an index of pulsatility (PI) of the pressure difference or flow rate, estimating the gradient of PI with respect to the rotational speed (dPI/dn) and regulating the dPI/dn to a pre-defined set-point or regulating the pump in a way that the dPI/dn is minimal. | 11-20-2014 |
20140357937 | AXIAL FLOW PUMP PRESSURE ALGORITHM - The presence or absence of a high pressure condition in an implantable blood pump is determined at least in part based on a comparison between a determined amount of differential pressure across the pump and a pressure threshold value. The amount of differential pressure parameter may be determined based at least in part on a parameter related to flow, such as a parameter related to thrust on the rotor of the pump. In response to determining the presence of a high pressure condition, an updated speed of rotation of the rotor that is less than the rotor's initial speed may be determined. The rotor's speed may be increased when the flow rate of blood is determined to be at least equal to a flow recovery threshold value. | 12-04-2014 |
20140357938 | NON-BLOOD CONTACTING MECHANICAL DEVICE THAT IMPROVES HEART FUNCTION AFTER INJURY - A method and device are provided for non-blood contact mechanically assisting an injured (e.g., infarcted) ventricle by coupling an inflatable bladder or other volume adjustable device to the injured ventricle and selectively inflating the bladder or increasing the size of the volume in systole to apply force against the injured ventricle and deflating the bladder or reducing the size of the volume in diastole to remove force against the injured ventricle. When no mechanical assistance is being provided to the injured ventricle, the inflatable bladder or volume adjustable device is preferably maintained at a predetermined pressure so as to selectively stiffen the injured tissue and alter ventricular geometry a desired amount. The method is implemented by a mechanical assist device including the volume adjustable device, a coupling means that couples the volume adjustable device to the injured ventricle, a pulsatile device that selectively increases and decreases the volume of the volume adjustable device, and a controller responsive to the pace of the heart and adapted to selectively change the size of the volume adjusting device in different modes of operation. | 12-04-2014 |
20140371519 | COUNTERPULSATION DEVICE DRIVER APPARATUS, METHOD AND SYSTEM - A method of operating a counterpulsation device (CPD) in a human or animal subject is disclosed, the method including: receiving a heart beat signal indicative of the heart beat of the subject; providing counterpulsation therapy by controlling the pressure supplied to a CPD drive line in pneumatic communication with the CPD to cause the CPD to alternately fill with blood and eject blood with a timing that is determined at least in part based on the heart beat signal; while providing counterpulsation therapy, receiving a CPD drive line pressure signal indicative of the pressure in the CPD drive line; and adjusting the pressure supplied to the drive line based at least in part on the drive line pressure signal. | 12-18-2014 |
20140378744 | Ventricular Assist Device - A ventricle assist device comprises an inlet for receiving blood, an outlet for discharging blood, and a chamber disposed between the inlet and the outlet. There is also a means for actuating the ventricle assist device between an expanded configuration and a contracted configuration. In the expanded configuration blood flows into the inlet. In the contracted configuration blood flows out of the outlet. There may be a one-way valve at the outlet for preventing blood flow back into the chamber. The one-way valve is a diaphragm valve. The chamber may have a resilient outer wall. The chamber may have an ovoid shape. | 12-25-2014 |
20150038772 | CONTROL OF BLOOD FLOW ASSIST SYSTEMS - A system for assisting blood flow in a patient includes an implantable pump system for assisting in blood flow from the heart and an implantable control system for communicative connection with the implantable pump system. The control system includes a pacemaker system that is operative to control heart rate and the pump system interdependently to achieve a determined level of blood flow assist. The control system is adapted to increase the heart rate of the patient to above a normal heart rate for the patient under the present conditions of the patient via the pacemaker while controlling the pump system to achieve the determined level of blood flow assist based upon the increased heart rate and a level of assist provided by the pump system. | 02-05-2015 |
20150057488 | PHYSIOLOGICALLY RESPONSIVE VAD - A ventricular assist device incorporating a rotary pump, such as a rotary impeller pump is implantable in fluid communication with a ventricle and an artery to assist blood flow from the ventricle to the artery. The device includes a pump drive circuit supplying power to the pump, one or more sensors for sensing one or more electrophysiological signals such as electrogram signals in and a signal processing circuit connected to the sensors and the pump drive circuit. The signal processing circuit is operative to detect the sensor signals and control power supplied to the pump from the pump drive circuit so that the pump runs in a pulsatile mode, with a varying speed synchronized with the cardiac cycle. When an arrhythmia is detected, the pump drive circuit may also run the pump in an atrial arrhythmia mode or a ventricular arrhythmia mode different from the normal pulsatile mode. | 02-26-2015 |
20150065786 | SKIN INTERFACE DEVICE FOR CARDIAC ASSIST DEVICE - A skin interface device (“SID”) for a cardiac assist device, including a SID cap having a first housing, an annular sleeve, and a first annular winding disposed over said annular sleeve. The SID further includes a SID base having a second housing formed to include a tubular portion, a cylindrical member disposed in said tubular portion, and a second annular winding disposed around said cylindrical member. The SID cap is configured to be rotationally attached to said SID base. When the SID cap is attached to the SID base, the second annular winding is disposed within the first annular winding, and the relative positions of the first annular winding and the second annular winding are fixed both laterally and vertically. | 03-05-2015 |
20150073203 | HEART FAILURE SYSTEMS AND METHODS - Embodiments of the disclosure include medical device systems and related methods. In an embodiment, the disclosure includes a medical device system. The medical device system can include a cardiac device. The cardiac device can include a processor, a memory, a communications circuit, and one or more sensors. The cardiac device can be configured to engage a sensor mode specific for patients receiving or having implanted ventricular assist devices. The cardiac device can be configured to process data as specified by the sensor mode specific for patients receiving or having implanted ventricular assist devices. In an embodiment, the disclosure includes a method for monitoring heart failure patients. In an embodiment, the disclosure includes a method of controlling devices for heart failure patients. Other embodiments are also included herein. | 03-12-2015 |
20150080640 | PNEUMATIC OR HYDRAULIC CARDIAC ASSIST DEVICES - The embodiments relate to cardiac assist devices that comprise a jacket that wraps the exterior of the heart, where the jacket comprises one or more pneumatic or hydraulic bladders. The pneumatic or hydraulic bladders are linked to a pump, and the pump fills the bladders with fluid and withdraws the fluid in a cycle to match beats of the heart to assist contraction and pumping of the heart in systole or to assist expansion and filling of the heart in diastole. | 03-19-2015 |
20150133721 | HEART ASSIST APPARATUS AND METHOD OF USE THEREOF - The invention comprises a heart assist device. In one embodiment, the heart assist device comprises a compressible sleeve about a body part, where one or more portions of the sleeve compress to provide a force on blood generating a flow or pulse of blood in the human circulatory system. In one case, the sleeve is external to the body, such as circumferentially about a limb or about a body extremity. In another case, the sleeve is internal to the body, such as circumferentially about an artery or vein. In still another case, two or more sleeves cooperatively function in parallel and/or in series. The heart assist device is optionally configured to auto-start in an emergency system, is in on-demand or in continuous contact with an emergency response system, and/or is linked to a medical professional's system. | 05-14-2015 |
20150133722 | PULSATILE BLOOD PUMP - An extravascular pulsation blood pump possesses a bidirectionally acting pumping system (P, M) having a pump (P) which is connected via a first conduit (L | 05-14-2015 |
20150133723 | VENTRICULAR ASSIST DEVICE AND RELATED METHODS - A method and system are provided for percutaneously gaining access to oxygenated blood with one or more anastomosis devices and pumping such oxygenated blood directly to the aorta adjacent to the right atrium or left atrium via a VAD system. In one embodiment, a VAD system can be implanted with open surgery. | 05-14-2015 |
20150290374 | Methods and Systems for Controlling a Blood Pump - The present invention generally relates to ventricular assist device power monitoring and conservation. In some embodiments, a pump controller may transition the pump to operate in a power-saving operational mode when a power source and/or a power source condition indicate a need to conserve power. In some embodiments, when the power source is an emergency battery and when the emergency battery has powered the pump for an extended period of time, the controller may signal the pump to operate in the power saving-operational mode. In some embodiments, when a low power hazard condition is triggered by signals from one or more external power sources, the controller may signal the pump to transition to the power-saving operational mode if the condition lasts for an extended period of time. In some embodiments, the controller may trigger the power-saving mode when the emergency backup battery is below a voltage threshold. | 10-15-2015 |
20150290375 | VENTRICULAR ASSIST DEVICES - An implantable blood pump includes a control unit storing patient specific settings. The control unit is configured to store patient specific settings. The patient specific settings can be used to determine a target operating speed for the blood pump and/or a target operating mode for the blood pump. The patient specific settings can include at least one of an operating mode for the pump, a set speed for the pump, a lower speed limit for the pump, a patient hematocrit value, a patient hematocrit date, a patient blood density, and a periodic log rate for event and periodic data. | 10-15-2015 |
20150306289 | METHODS AND SYSTEMS FOR COUNTERPULSATION OF BLOOD FLOW TO AND FROM THE CIRCULATORY SYSTEM - Counterpulsation methods and systems for assisting the heart of a patient involve, for example, coordinating the operation of a pulsatile pump to suction blood from an artery through a blood flow conduit while the heart is in systole and expel the blood into the blood flow conduit and the artery while the heart is in diastole. | 10-29-2015 |
20150306290 | Smart Tip LVAD Inlet Cannula - Embodiments of the invention provide a left ventricular assist device (LVAD) cannula that includes multiple independent sensors may help decrease the incidence of ventricular collapse and provide automatic speed control. A cannula may include two or more independent sensors. One sensor may measure ventricular pressure, while another may measure ventricular volume and/or ventricular wall location. With this information an automatic control system may be configured to adjust pump speed to minimize the likelihood of ventricular collapse and maximize LVAD flow in response to physiologic demand. Typically the volume sensors are conductance sensors. Further embodiments provide LVADs that are powered by RF energy. | 10-29-2015 |
20150328466 | SYNCHRONIZATION CONTROL SYSTEM - The various embodiments herein relate to systems and methods for controlling the operation of a pulsatile heart assist device in a patient. The systems and methods include utilizing sounds and electrical signals produced by the heart to control the operation of the heart assist device. | 11-19-2015 |
20150335804 | Pump, System With A Blood Pump And Method For Producing A Blood Pump - The invention relates to a blood pump made of titanium with a measuring device for determining flow based on acoustic flow measurement methods and a blood pump with a temperature sensor and/or a pressure sensor, and a system with a blood pump and an inlet cannula and/or an outlet connector and a method for producing a blood pump with a measuring device. | 11-26-2015 |
20150343125 | HEART HELP DEVICE, SYSTEM, AND METHOD - The present invention relates to an implantable device for improving the pump function of the heart of a human patient by applying an external force on the heart muscle. The implantable device comprises at least one implantable pump device comprising: A fluid, A first reservoir having a first volume and at least one movable wall portion, for varying said first volume, and A second reservoir being in fluid connection with said first reservoir. Wherein said implantable pump device is adapted to allow free flow of fluid between said first reservoir and said second reservoir, and wherein said first reservoir, said second reservoir and said fluid connection forms a fully implantable closed pump device, and wherein said fully implantable closed pump device is adapted to transfer force from said first reservoir to said second reservoir. | 12-03-2015 |
20150367048 | Methods and Devices For Identifying Suction Events - The present disclosure provides for a method, control device, and implantable system, for acquiring a plurality of flow rate data points over time, each data point indicative of a flow rate of blood through the pump, calculating, based on the plurality of acquired flow rate data points, a value characterizing one or more features of a waveform formed from the plurality of flow rate data points; and determining, based on the value, the presence or absence of a suction condition in the pump. | 12-24-2015 |
20160000983 | Ventricular assist device - The invention relates to a ventricular assist device for intraventricular placement inside a human heart including an anchor element configured to be mounted to the heart in the region of the apex; and a pump connected to the anchor element comprising a preferably tubular housing having an intraventricular inlet and an intraventricular outlet and further comprising a drive for driving a rotor arranged within the housing, thereby providing pulsatile flow acceleration in the left ventricle synchronized with the heart beat and according to volume requirements in the left ventricle. | 01-07-2016 |
20160008527 | SELF-CONTAINED HEART PUMP, AND METHOD IMPLEMENTED IN SUCH A PUMP | 01-14-2016 |
20160022888 | THORACIC AORTA VENTRICULAR ASSIST SYSTEM - An implantable heart assist system, includes a pumping chamber formed of a flexible material and being adapted to be placed in fluid connection with the aorta and a pump system comprising a first rigid member, a second rigid member spaced from the first rigid member so that at least a portion of the pumping chamber may be positioned between the first rigid member and the second rigid member, a drive system comprising a motor, an extending member comprising a threaded section operatively connecting the first rigid member and the second rigid member and a nut in operative connection with the threaded section. The motor is adapted to rotate either the extending member or the nut relative to the other to convert rotary motion of the motor to linear motion to cause the second rigid member to move toward the first rigid member or away from the first rigid member. The heart assist system further includes a controller or a control system in operative connection with the drive system and controlling the motor. Movement of the second rigid member toward the first rigid member results in compression of the pumping chamber, and movement of the second rigid member away from the first rigid member causes expansion of the pumping chamber. | 01-28-2016 |
20160022890 | RENAL PUMP - Apparatus and methods are described including identifying a subject as suffering from a condition selected from the group consisting of: cardiac dysfunction, congestive heart failure, reduced renal blood flow, increased renal vascular resistance, arterial hypertension, and kidney dysfunction. In response thereto, blood pressure within a renal vein ( | 01-28-2016 |
20160022896 | CARDIAC SUPPORT SYSTEM AND METHODS - A system and methods of using a multi-lumen catheter and a blood pump to increase cardiac output and blood oxygenation are described. The system diverts deoxygenated blood from the right atrium to the left atrium, through the atrial septum. The catheter is adapted for simultaneously pumping blood to and from a patient's heart. A gas exchanger may be used as part of the system to remove CO | 01-28-2016 |
20160030650 | TET SYSTEM FOR IMPLANTED MEDICAL DEVICE - A TET system is operable to vary an amount of power transmitted from an external power supply to an implantable power unit in accordance with a monitored condition of the implantable power unit. The amount of power supplied to the implantable power unit for operating a pump, for example, can be varied in accordance with a cardiac cycle, so as to maintain the monitored condition in the power circuit within a desired range throughout the cardiac cycle. | 02-04-2016 |
20160045654 | Implanted Extracardiac Device for Circulatory Assistance - This invention is an implanted extracardiac device for supplementing blood circulation which comprises an implanted blood flow lumen, a blood flow increasing mechanism, and a control unit. Its design improves blood circulation when the blood flow increasing mechanism is operating, without hindering native blood flow when the mechanism is not operating. This device improves circulation without intruding on cardiac tissue or weakening the heart by completely supplanting cardiac function. Also, since the device allows native blood flow when the blood flow increasing mechanism is not in operation, it requires less power and can enable more patient mobility. | 02-18-2016 |
20160058929 | BLOOD PUMP AND METHOD OF SUCTION DETECTION - A system and method for detecting and mitigating a suction condition are disclosed. The method may include estimating a flow waveform of the pump, identifying pulses in the flow waveform, determining a negative flow based on a valid identification of a pulse, and evaluating a characteristic of the pulse for an existence of a suction condition. In various embodiments, a suction marker is located based on a minimum in a diastolic phase, and the suction marker location is used to identify a probability of a suction condition. A speed of the pump may be adjusted to mitigate the suction condition. A system and method for estimating flow is further disclosed. The method may include interpolating data sets defining pump power to flow for various pump speed values. | 03-03-2016 |
20160058930 | BLOOD PUMP AND METHOD OF SUCTION DETECTION - A system and method for detecting and mitigating a suction condition are disclosed. The method may include characterizing pump waveform signal, identifying and evaluating a characteristic of the waveform for an existence of a suction condition. In various embodiments, a change in harmonic spectral distribution will identify a probability of a suction condition. A speed of the pump may be adjusted to mitigate the suction condition. | 03-03-2016 |
20160058931 | INTRA-AORTIC BALLOON COUNTERPULSATION WITH CONCURRENT HYPOTHERMIA - Devices, systems and methods for treating disorders characterized by low cardiac output. The devices, systems and methods use intra-aortic balloon counterpulsation in combination with hypothermia of all or a portion of a human or veterinary patient's body to improve coronary perfusion and cardiac output. To effect the hypothermia, a heat exchange catheter may be positioned in the a patient's vasculature separately from the intra-aortic balloon counterpulsation catheter. Alternatively, a combination Intra-aortic balloon counterpulsation/heat exchange catheter may be utilized. Such combination catheter comprises a) a catheter sized for insertion into the aorta, b) a counterpulsation balloon and c) a heat exchanger. A drive/control system receives temperature and electrocardiograph signals and drives the inflation/deflation of the counterpulsation balloon as well as the heating/cooling of the heat exchanger. | 03-03-2016 |
20160089483 | VENTRICULAR ASSIST DEVICE CONTROLLER WITH INTEGRATED POWER SOURCE - An extra-corporeal controller unit for an implantable ventricular assist device (VAD) includes control circuitry integrated with a rechargeable power source without including any power cables between the control circuitry and the rechargeable power source. The rechargeable power source includes two or more rechargeable batteries configured in respective battery modules. The battery modules are configured for removable installation in a housing of the controller unit. Mating power connectors are integrated in the battery modules and the housing. The mating connectors are configured to couple each battery to the control circuitry whenever the respective battery module containing the battery is installed in the housing. An energy storage unit may be permanently included in the controller unit and configured to remain fully charged and provide power to the VAD when the battery modules are removed. | 03-31-2016 |
20160095968 | Back Up Controller System With Updating - A medical device system includes a medical device configured to be carried by a patient and a plurality of controllers capable of controlling operation of the medical device. Each controller has an active state in which the controller is in communication with, and controls the operation of, the medical device, and a passive state in which the controller is not controlling operation of the medical device. At any given time only one of the plurality of controllers will be in the active state and a remainder of the plurality of controllers will be in the passive state. The active controller may be configured to continually communicate with the remainder of passive controllers, without using the medical device as an intermediary, to update the information stored in the memories of the passive controllers to match the information in the memory of the active controller. | 04-07-2016 |
20160101230 | Biomedical Apparatus for Pumping Blood of a Human or an Animal Patient through a Secondary Intra- or Extracorporeal Blood Circuit - A biomedical apparatus for pumping blood of a human or an animal patient through a secondary blood circuit is provided, including a blood pump ( | 04-14-2016 |
20160114091 | SYSTEMS AND METHODS FOR TREATING PULMONARY HYPERTENSION - A system for treating heart disease, such as pulmonary hypertension or right heart failure, including an implantable component and external components for monitoring the implantable component is provided. The implantable component may include a compliant member, e.g., balloon, coupled to a reservoir via a conduit. Preferably, the compliant member is adapted to be implanted in a pulmonary artery and the reservoir is adapted to be implanted subcutaneously. The external components may include a clinical controller component, monitoring software configured to run a clinician's computer, a patient monitoring device, and a mobile application configured to run on a patient's mobile device. | 04-28-2016 |
20160136344 | VENTRICULAR ASSIST DEVICE AND METHOD - A ventricular assist device includes a stent for placement within a cardiac artery and arranged for placement, the stent arranged to have an open configuration defining a flow path, a rotor sized to fit within the stent and arranged for percutaneous placement the flow path, the rotor including a surface disposed about a central portion and angled with respect to the flow path and having a first plurality of magnets. A collar is sized for placement about the cardiac artery and includes a stator. A power source is coupled to the stator, and the stator and the rotor are arranged to rotate the rotor about an axis. A timing control module controls a rotational speed of the rotor. Accordingly, the surface of the rotor is arranged to move blood along the flow path in response to rotation of the rotor. | 05-19-2016 |
20160151553 | IMPLANTABLE HEART PUMP CONTROLLER | 06-02-2016 |
20160158426 | SKIN INTERFACE DEVICE FOR CARDIAC ASSIST DEVICE - A skin interface device (“SID”) for a cardiac assist device, including a SID cap having a first housing, an annular sleeve, and a first annular winding disposed over said annular sleeve. The SID further includes a SID base having a second housing formed to include a tubular portion, a cylindrical member disposed in said tubular portion, and a second annular winding disposed around said cylindrical member. The SID cap is configured to be rotationally attached to said SID base. When the SID cap is attached to the SID base, the second annular winding is disposed within the first annular winding, and the relative positions of the first annular winding and the second annular winding are fixed both laterally and vertically. | 06-09-2016 |
20160193397 | CARDIAC SUPPORT SYSTEMS AND METHODS FOR CHRONIC USE | 07-07-2016 |
20160199554 | APPARATUS AND METHODS FOR OPTIMIZING INTRA CARDIAC FILLING PRESSURES, HEART RATE, AND CARDIAC OUTPUT | 07-14-2016 |
20160250399 | METHOD FOR OPERATING A SUPPLY DEVICE WHICH SUPPLIES A LIQUID TO A CHANNEL, AND SUPPLY DEVICE, HOLLOW CATHETER, AND CATHETER PUMP | 09-01-2016 |
20170232166 | Use And Monitoring Of Inhaled Nitric Oxide With Left Ventricular Assist Devices | 08-17-2017 |
20170232167 | CATHETER SYSTEM AND INTRAVASCULAR BLOOD PUMP HAVING SAID CATHETER SYSTEM | 08-17-2017 |
20180021493 | Heart help device system and method | 01-25-2018 |
20180021496 | BLOOD PUMP FOR TREATMENT OF BRADYCARDIA | 01-25-2018 |
20220134083 | VENTRICULAR ASSIST DEVICE - Apparatus and methods are described including a tube configured to traverse an aortic valve of a subject. A frame is disposed within at least a portion of the tube. An impeller rotates such as to pump blood from the subject's left ventricle to the subject's aorta. The impeller is disposed inside the tube such that, when the impeller and the tube are deployed inside the subject, and prior to rotation of the impeller, a gap between an outer edge of the impeller and an inner surface of the tube is less than 1 mm. A rigid stabilizing element stabilizes the impeller with respect to the tube, such that during rotation of the impeller, a gap between the outer edge of the impeller and the inner surface of the tube is maintained. Other applications are also described. | 05-05-2022 |