Class / Patent application number | Description | Number of patent applications / Date published |
623300130 | Having enclosed rotary member for directly impelling blood flow | 34 |
20080269880 | Blood pump bearings with separated contact surfaces - Rotary hydrodynamic blood pumps have been used to treat over a thousand patients. The Jarvik 2000 has supported a patient for seven years and uses blood immersed bearings washed by high flow to avoid excessive thrombus formation. This permits the pump to be very simple and small. Nonetheless, the present Jarvik 2000 bearings and all other mechanical blood immersed bearings of the prior art have a supporting structure that predisposes to thrombus adjacent to the bearings. The present invention provides a bearing structure that eliminates this predilection site for thrombus formation, and may provide indefinite thrombus free operation. The rotor of the preferred embodiment includes a tapered hub fabricated of wear resistant material supported by three posts at each end of the rotor, upon which the rotor rotates. Blood washes the unobstructed spaces between the posts to prevent the accumulation of a torus of thrombus that could enlarge excessively. | 10-30-2008 |
20090112312 | Intravascular ventricular assist device - One aspect of an intravascular ventricular assist device is an implantable blood pump where the pump includes a housing defining a bore having an axis, one or more rotors disposed within the bore, each rotor including a plurality of magnetic poles, and one or more stators surrounding the bore for providing a magnetic field within the bore to induce rotation of each of the one or more rotors. Another aspect of the invention includes methods of providing cardiac assistance to a mammalian subject as, for example, a human. Further aspects of the invention include rotor bodies having helical channels formed longitudinally along the length of the body of the rotor where each helical channel is formed between peripheral support surface areas facing radially outwardly and extending generally in circumferential directions around the rotational axis of the rotor. | 04-30-2009 |
20090132038 | ROTARY DISPLACEMENT PUMP WITH SMALLER RADIAL DIMENSIONS - According to the invention the rotary pump consists of an external gear ( | 05-21-2009 |
20090138080 | Method for Controlling a Blood Pump - A blood pump is temporarily operated at a low rotational speed lying below a design rotational speed. This involves a risk of thrombogenesis since flow detachments may occur at blades of an impeller of the rotary blood pump. For eliminating deposits at said impeller, the rotational speed of said pump is temporarily increased to the design rotational speed. Alternatively, said pump alternately operates at said design rotational speed and a low rotational speed, and this pulsed operation is synchronized with the heart rate. | 05-28-2009 |
20090149950 | HEART ASSIST DEVICE - A heart assist device comprising a rotary pump housing having a cylindrical bore, a pumping chamber and a motor stator including an electrically conductive coil located within the housing and surrounding a portion of the cylindrical bore. A rotor has a cylindrical shaft, at least one impeller appended to one end of the shaft, and a plurality of magnets located within the shaft. The rotor shaft is positioned within the housing bore with the magnets opposite the motor stator, and the impeller is positioned within the pumping chamber. The housing bore is closely fitted to the outer surface of the shaft forming a hydrodynamic journal bearing, with the pumping chamber and journal bearing connected by a leak path of blood flow between the pumping chamber and the journal bearing. A backiron of the motor stator attracts the rotor magnets to resist longitudinal displacement of the rotor within the housing during operation. The relative orientation of positions of the inflow, outflow, and leakage flow paths may be varied within the pump, such as to accommodate different intended methods for implantation and/or use. | 06-11-2009 |
20090204205 | Platinum-cobalt-boron blood pump element - A magnetic impeller for a blood pump such as a magnetically driven, rotary ventricular assist device for pumping blood of a patient, the impeller comprising a magnetic alloy including platinum, cobalt, and boron. | 08-13-2009 |
20090259308 | Artificial heart pump - By inserting a protruding portion | 10-15-2009 |
20090326649 | TURBO TYPE BLOOD PUMP - An impeller | 12-31-2009 |
20100036486 | 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. | 02-11-2010 |
20100121438 | Sub-miniature electromechanical medical implants with integrated hermetic feedthroughs - Highly miniaturized electromechanical medical implants for certain applications cannot be fit into the available anatomic space unless their diameter can be made small enough. With devices such as rotary blood pumps or linear actuators, using rotary or linear electric motors, a thin motor stator that provides sufficient power must be encased in a corrosion resistant hermetically sealed enclosure into which electric wires must pass. Hermetic feedthroughs of the prior art are not structurally suited to maximal miniaturization with optimal electrical properties because of the need for welding of ferrules or other support components. The sub-miniature medical implants having the robust feedthrough of the present invention integrate the feedthrough wires, insulators, and sealing within a radially extending flange that is part of the end wall of the motor enclosure. This permits the largest feedthrough wire and thickest insulator to be built into the limited available space. | 05-13-2010 |
20100168848 | TWO-STAGE ROTODYNAMIC BLOOD PUMP | 07-01-2010 |
20100185280 | ROTARY BLOOD PUMP AND CONTROL SYSTEM THEREFOR - A pump assembly and estimation and control system therefor, the pump adapted for continuous flow pumping of blood. In a particular form, the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is exclusively hydrodynamically suspended therein against movement in three translational and two rotational degrees of freedom as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top surfaces thereof. | 07-22-2010 |
20110144744 | TOTAL ARTIFICIAL HEART - A total artificial heart having a rotor with an impeller, wherein the rotor is mounted within a pump housing on a hollow shaft. The rotor is magnetically driven to produce rotary motion of the impeller for pumping blood. The motor is disposed within the pump housing such that axial translation within the housing acts as a shuttle valve to alternate flow between pulmonary and systemic circulation. | 06-16-2011 |
20120022645 | CONTROLLING IMPLANTED BLOOD PUMPS - A blood pump controller includes a microcontroller and a communication interface. The microcontroller is configured to communicate with various types of blood pump communication modules. The microcontroller is further configured to determine, based on communication with a particular type of blood pump communication module, the particular type of blood pump communication module communicated with. The microcontroller is further configured to select, based on the determination of the particular type of blood pump communication module, control logic used to control the particular type of blood pump communication module. The microcontroller is further configured to generate, based on the selected control logic, commands for controlling the blood pump communication module. The communication interface is configured to connect the microcontroller to the particular type of blood pump communication module. | 01-26-2012 |
20120089225 | HIGH EFFICIENCY BLOOD PUMP - A high efficiency blood pump includes a pump housing, wherein the pump housing provides an inlet and outlet. The pump includes a motor housing, wherein the motor housing contains a motor. An impeller is housed in the pump housing, wherein the impeller is radially supported by a hydrodynamic bearing providing at least one row of pattern grooves. A diaphragm provided by the pump housing separates the impeller chamber from the motor chamber. A magnetic coupling is provided between the motor and the impeller, wherein the magnetic coupling causes the impeller to rotate when the motor rotates and provides axial restraint of the impeller. | 04-12-2012 |
20130204362 | BLOOD PUMP FOR THE INVASIVE APPLICATION WITHIN A BODY OF A PATIENT - The invention relates to a blood pump for the invasive application within a body of a patient comprising a rotor ( | 08-08-2013 |
20130218268 | HEART ASSISTANCE DEVICE - A heart assistance device for the pulsatile delivery of blood. A first and a second pump chamber are provided, and also a pump. Both pump chambers each have a fluid chamber and a blood-carrying chamber. By means of the pump, each fluid chamber can be filled with a fluid or emptied thereof in such a way that an expansion or contraction of the fluid chamber takes place. During the expansion of the fluid chamber of one pump chamber, a compression of the blood-carrying chamber of the same blood chamber takes place. | 08-22-2013 |
20140067056 | Hall Sensor Mounting in an Implantable Blood Pump - A molded interconnect device can carry a Hall sensor for transducing a position of a rotor of the implantable blood pump. The molded interconnect device includes one or more integrated electronic circuit traces configured to electrically connect the hall sensor with a printed circuit board of the implantable blood pump, and the molded interconnect device is configured to be mounted to the printed circuit board. | 03-06-2014 |
20140155998 | TOTAL ARTIFICIAL HEART - A total artificial heart having a rotor with an impeller, wherein the rotor is mounted within a pump housing on a hollow shaft. The rotor is magnetically driven to produce rotary motion of the impeller for pumping blood. The motor is disposed within the pump housing such that axial translation within the housing acts as a shuttle valve to alternate flow between pulmonary and systemic circulation. | 06-05-2014 |
20140207232 | REMOVABLE HEART PUMP, AND METHOD IMPLEMENTED IN SUCH A PUMP - The heart pump includes: a rotary impeller inserted in the systemic ventricle, the rotary impeller being provided with: a sealing membrane sutured onto the outer wall of the heart so as to secure the rotary impeller to the wall of the heart; a casing arranged inside the systemic ventricle such as to be able to suction and then discharge the blood; a preferably brushless motor connected to the casing and arranged inside the systemic ventricle and/or in the body of the ventricle, so as to facilitate maintenance; a managing unit installed in the epigastric region and including a preferably rechargeable power source and a unit for controlling the rotary impeller; a wired link between the managing unit and the rotary impeller; and a system for transmitting haemodynamic and rhythmic data measured by the heat pump via telemedicine. | 07-24-2014 |
20140371849 | Autonomous Artificial Heart - Embodiments of the disclosed technology are directed to a self-contained, totally implantable blood pump that replaces the whole heart. It is a small spherical device that encloses all of its blood propulsion dynamics. The dynamics are controlled by a built-in microcontroller that regulates the speed of the motor in response to hemodynamic changes like blood pressure fluctuations, level of body activity, and/or posture. The hemodynamic changes are detected using a plurality of sensors disposed around the body. An implantable transcutaneously rechargeable battery provides power to the microcontroller, motor and/or sensors. | 12-18-2014 |
20150066142 | Four Chamber Redundant-Impeller Artificial Heart - An artificial heart for use in a human recipient includes a housing within which a quartet of turbine pump segments are operative. The quartet of turbine pump segments provides a redundancy which in turn enhances the safety factor provided by the artificial heart. A controller is powered by a rechargeable battery and is operative to apply appropriate drive signals to the motor drives of the turbine pump segments. The battery may be implanted along with the controller to avoid the need for any external connections to the artificial heart. An inductively coupled battery charger for use outside the recipient's body is positioned proximate the battery charger to provide inductively coupled charging for use in driving the artificial heart. | 03-05-2015 |
20150290378 | METHODS AND SYSTEMS FOR LVAD OPERATION DURING COMMUNICATION LOSSES - Methods, systems, and devices for an adaptable blood pump are disclosed herein. The blood pump can be part of a mechanical circulatory support system that can include a system controller and the blood pump. The blood pump can include a rotary motor and a control unit that can communicate with the system controller. The blood pump can determine when communication with the system controller is established or has been lost. The blood pump can retrieve one or several back-up parameters when communication with the system controller has been lost, and can operate according to these back-up parameters. | 10-15-2015 |
20160022887 | TOTAL ARTIFICIAL HEART - A total artificial heart having a rotor with an impeller, wherein the rotor is mounted within a pump housing on a hollow shaft. The rotor is magnetically driven to produce rotary motion of the impeller for pumping blood. The motor is disposed within the pump housing such that axial translation within the housing acts as a shuttle valve to alternate flow between pulmonary and systemic circulation. | 01-28-2016 |
20160038663 | IMPLANTABLE PUMP WITH TAPERED DIFFUSER REGION - A blood pump, such as an axial flow pump, having a pump housing, the pump housing defining a flow path and having a tapered portion adjacent to an outlet, tapering toward the outlet, an outflow cannula connected to the outlet of the pump housing, and an impeller and diffuser, disposed in the pump housing, the diffuser having a tapered body corresponding to the tapered portion of the pump housing, the diffuser body having at least one vane extending therefrom, the vein tapering in the same direction as the diffuser body. The present invention also includes a method of manufacturing the blood pump and a method of implanting the blood pump. | 02-11-2016 |
20160199555 | CATHETER-BASED HEART SUPPORT SYSTEM AND METHOD OF IMPLANTING THEREOF | 07-14-2016 |
623300140 | Blood flow along electromagnetic section of stator member | 7 |
20090306771 | Artificial heart pump - In order to optimize the clearances between both end surfaces of a sleeve | 12-10-2009 |
20100268333 | SYSTEM AND METHOD FOR CONTROLLING PUMP - Systems and methods to control the movement of one or more pistons in a pumping chamber. The systems and methods may include a sensor to sense an external variable provide an output signal. The systems and methods may also include a microprocessor configured to receive the output signal from the sensor and to change an operating parameter of the pump in response to the output signal. | 10-21-2010 |
20100268334 | System and Method for Pump Variable Stroke - Systems and methods for providing a variable pumping stroke from a pump comprising a pumping chamber, a pump inlet, a pump outlet, a valving mechanism, and a drive piston. | 10-21-2010 |
20120150291 | 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. | 06-14-2012 |
20140200664 | HIGH EFFICIENCY BLOOD PUMP - A high efficiency blood pump includes a pump housing, wherein the pump housing provides an inlet and outlet. The pump includes a motor housing, wherein the motor housing contains a motor. An impeller is housed in the pump housing, wherein the impeller is radially supported by a hydrodynamic bearing providing at least one row of pattern grooves. A diaphragm provided by the pump housing separates the impeller chamber from the motor chamber. A magnetic coupling is provided between the motor and the impeller, wherein the magnetic coupling causes the impeller to rotate when the motor rotates and provides axial restraint of the impeller. | 07-17-2014 |
20150361987 | Centrifugal Blood Pump Impeller and Flow Path - An impeller and rotor structure for a magnetically levitated pump define a smooth primary flow path and U-shaped secondary flow path, which extends around an annular magnetic rotor. The u-shaped secondary flow path is defined by a large outer side gap along an outer surface of the rotor, a large bottom gap along a bottom surface of the rotor and a large inner gap along an inner surface of the rotor. Shroudless impeller blades are purely radial and overhung from a thin peripheral ring attached to the annular magnetic rotor. A center post having a low aspect ratio extends through the annular rotor. The low aspect ratio is configured to prevent flow in the primary flow path from colliding directly with flow in the secondary flow path at the inner radial gap. | 12-17-2015 |
20190143017 | REDUNDANT-IMPELLER ARTIFICIAL HEART | 05-16-2019 |
623300150 | Rotary member driven by flexible shaft (e.g., cable, etc.) | 1 |
20130041460 | BLOOD FLOW ASSIST DEVICES, SYSTEMS AND METHODS WITH ACTIVE VALVE CONTROL - An implantable pump system for assisting blood flow includes a conduit adapted to be placed in fluid connection with a blood vessel and at least one movable valve in fluid connection with the conduit. The valve includes at least one closure member in operative connection with an opening therein. The pump system further includes and an activating system adapted to actively move the closure member toward at least one of a closed position or an open position and a drive system to move the valve. The closure member can, for example, be biased toward an open position. | 02-14-2013 |