ZOLL CIRCULATION INC. Patent applications |
Patent application number | Title | Published |
20150230975 | PATIENT HEAT EXCHANGE SYSTEM WITH TWO AND ONLY TWO FLUID LOOPS - A heat exchange system for exchanging heat with working fluid from an intravascular heat exchange catheter or an external heat exchange pad includes a working fluid that circulates between the catheter or pad and a fluid cassette, and a refrigerant system that flows against the outer sides of cold plates between which the cassette is disposed. | 08-20-2015 |
20150230974 | FLUID CASSETTE WITH POLYMERIC MEMBRANES AND INTEGRAL INLET AND OUTLET TUBES FOR PATIENT HEAT EXCHANGE SYSTEM - A working fluid cassette for an intravascular heat exchange catheter includes a frame holding two closely spaced, square polymeric membranes along the sides of which are disposed inlet and outlet tubes. Working fluid from the catheter is directed from the inlet tube between the membranes to the outlet tube. The cassette is closely received between two refrigerant cold plates to exchange heat with the working fluid, which is circulated back to the catheter. | 08-20-2015 |
20150223974 | PATIENT HEAT EXCHANGE SYSTEM WITH TRANSPARENT WALL FOR VIEWING CIRCULATING REFRIGERANT - A heat exchange system for exchanging heat with working fluid from an intravascular heat exchange catheter or an external heat exchange pad includes a working fluid that circulates between the catheter or pad and a fluid cassette, and a refrigerant system that flows against the outer sides of cold plates between which the cassette is disposed. An outer wall of the system is transparent so that a person can view the refrigerant as it circulates, ensuring proper operation. | 08-13-2015 |
20150094624 | Chest Compression Device - A chest compression device includes a piston to apply compression to the sternum and incorporates leaf springs simultaneously driven by the piston to apply lateral compression to the thorax during chest compressions. A motor in the chest compression device provides motive power to cyclically extend and contract the piston to provide therapeutic chest compressions. One end of each leaf spring is operably connected to the piston and the other end of each leaf spring is secured to the backboard/base or to a support leg of the chest compression device such that during extension of the piston, each leaf spring is compressed against the device base or leg which causes the springs to flex and provide lateral compression of the patient's thorax in addition to the sternal compression of the piston. | 04-02-2015 |
20150057580 | Piston-Based Chest Compression Device with Belt Drive - A hybrid chest compression device includes a backboard with a motor and a drive spool housed within the backboard. There is also a piston support frame secured to the backboard forming a patient channel between the piston support frame and the backboard. There is a belt operably secured to the drive spool and enclosed within the backboard and the piston support frame and a piston operably housed within the piston support frame wherein motion of the belt actuates motion of the piston. Actuation of the motor results in cyclic rotation and counter-rotation of the motor and corresponding winding and unwinding of the belt on the drive spool to effectuate cyclic extension and retraction of the piston against the patient's chest to perform mechanical cardiopulmonary resuscitation. | 02-26-2015 |
20150051522 | Resuscitation Device with Expert System - A resuscitation device for automatic compression of victim's chest using a compression belt which exerts force evenly over the entire thoracic cavity. The belt is constricted and relaxed through a motorized spool assembly which repeatedly tightens the belt and relaxes the belt to provide repeated and rapid chest compression. An assembly includes various resuscitation devices including chest compression devices, defibrillation devices, and airway management devices, along with communications devices and senses with initiate communications with emergency medical personnel automatically upon use of the device. | 02-19-2015 |
20140364928 | DISPOSABLE CASSETTE FOR INTRAVASCULAR HEAT EXCHANGE CATHETER - A heat exchange fluid supply system for supplying a heat exchange fluid to an intravascular heat exchange catheter includes a disposable cassette having a bulkhead and an external heat exchanger, and which is configured to operate in combination with a reusable master control unit. The bulkhead includes a reservoir section and a pump section. The reservoir section is provided with a means to monitor the amount of heat exchange fluid that is in the system. The bulkhead provides the mechanism for priming the system with heat exchange fluid from an external source and for circulating fluid to the catheter in a closed circuit. The pump section is configured to allow for pumping of heat exchange fluid at a constant pressure. | 12-11-2014 |
20140358201 | APPARATUS AND METHOD FOR PROVIDING ENHANCED HEAT TRANSFER FROM A BODY - Methods and apparatuses for temperature modification of a patient, or selected regions thereof, including an induced state of hypothermia. The temperature modification is accomplished using an in-dwelling heat exchange catheter within which a fluid heat exchange medium circulates. A heat exchange cassette is attached to the circulatory conduits of the catheter, the heat exchange cassette being sized to engage a cavity within a control unit. The control unit includes a heater/cooler device for providing heated or cooled fluid to a heat exchanger in thermal communication with the fluid heat exchange medium circulating to the heat exchange catheter, a user input device, and a processor connected to receive input from various sensors around the body and the system. A temperature control scheme for ramping the body temperature up or down without overshoot is provided. | 12-04-2014 |
20140333366 | BATTERY MANAGEMENT SYSTEM WITH MOSFET BOOST SYSTEM - A boost converter for driving the gate of n-channel MOSFET power devices is described. The boost converter includes a monitoring circuit and a kick start circuit to quickly bring the boost converter online when required to drive the MOSFET on. | 11-13-2014 |
20140324110 | PUBLIC ACCESS CPR AND AED DEVICE - A system for resuscitation of a heart attack victim. The system includes CPR device which compresses the victim's chest, a defibrillator which may be used to defibrillate the patient, and an identification system for identifying the person operating the system. Depending on the identity of the operator, the system permits varying degrees of access to components and enablement of the functions of the various subsystems. | 10-30-2014 |
20140309564 | PORTABLE AUTOMATIC CHEST COMPRESSION DEVICES - An automated chest compression device has a housing for supporting a patient and a motor within the housing. A conical drive spool is operatively connected to the motor and a cable, is operatively connected to the conical drive spool. The cable is adapted to extend at least partially around the chest of the patient. A controller is operable to control the motor to compress the chest to variable thresholds. | 10-16-2014 |
20140303531 | SAFETY MECHANISMS FOR BELT CARTRIDGE USED WITH CHEST COMPRESSION DEVICES - Safety mechanisms for compression belt cartridges used in chest compression devices. The safety mechanisms include a breakable link, liner socks, belt guards and a rapid-release connector. The breakable link ensures that unsafe belt tension will not occur. The liner socks protect the patient from friction and contain the breakable link. The belt guards protect foreign objects from entering the belt drive platform. The rapid-release connector allows the belt to be removed safely even during compressions. | 10-09-2014 |
20140288468 | METHODS AND DEVICES FOR ATTACHING A BELT CARTRIDGE TO A CHEST COMPRESSION DEVICE - Devices and methods for attaching a belt cartridge to a belt drive platform. A clip attached to the belt is inserted into a slot in the drive spool of the belt drive platform. The cover plate of the belt cartridge fits into a channel beam in the housing of the belt drive platform, thereby securing the cartridge to the housing. Belt guards, for protecting the cartridge, belt drive platform, patient and rescuer, are rotatably attached to the cover plate and are secured around spindles disposed on the sides of the housing. | 09-25-2014 |
20140277304 | METHOD OF GASTRIC COOLING USING BALLOON CATHETER - A balloon catheter is used in a closed-loop heat exchange system for manipulating the temperature of a patient. The balloon catheter is positioned in the stomach of the patient, and then expanded with a heat exchange fluid delivered through a lumen formed in the shaft of the catheter. The balloon catheter comes into contact with the wall of the stomach, and the stomach substantially conforms around the expanded balloon catheter. The heat exchange fluid is allowed to flow continuously into and out of the balloon catheter. Heat is exchanged between the balloon catheter and the stomach so as to controllably alter the temperature of at least a portion of the patient. Anti-shivering mechanisms and automatic control based on temperature feedback from the patient may be used in connection with the heat exchange system. | 09-18-2014 |
20140276269 | CPR Gurney - A mechanical chest compression device is secured to a gurney, transport stretcher or ambulance cot while engaging a patient's thorax to provide mechanical CPR during transport. The mechanical chest compression device compresses the patient's thorax against the gurney deck. The mechanical chest compression device may engage the side rails on the gurney, the gurney deck or any suitable structural elements of the gurney. | 09-18-2014 |
20140257441 | Method for Controlling Patient's Body Temperature - The present invention provides a method and apparatus for controlling the internal body temperature of a patient. According to the present invention, a catheter is inserted through an incision into a large blood vessel of a patient. By selectively heating or cooling a portion of the catheter lying within the blood vessel, heat may be transferred to or from blood flowing within the vessel and the patient's body temperature may thereby be increased or decreased as desired. The invention will find use in treating undesirable conditions of hypothermia and hyperthermia, or for inducing a condition of artificial hypothermia when desired. | 09-11-2014 |
20140236054 | PORTABLE AUTOMATIC CHEST COMPRESSION DEVICES - An automated chest compression device has a housing for supporting a patient and a motor within the housing. A conical drive spool is operatively connected to the motor and a cable, is operatively connected to the conical drive spool. The cable is adapted to extend at least partially around the chest of the patient. A controller is operable to control the motor to compress the chest to variable thresholds. | 08-21-2014 |
20140221884 | CPR Assist Device - A system for performing chest compression for Cardiopulmonary Resuscitation. The system includes a motor, drive spool and associated couplings which allow for controlling and limiting the movement of the compressing mechanism and includes a control system for controlling the operation and interaction of the various components to provide for optimal automatic operation of the system. | 08-07-2014 |
20140214140 | METHOD AND APPARATUS FOR CONTROLLING A PATIENT'S BODY TEMPERATURE BY IN SITU BLOOD TEMPERATURE MODIFICATION - The present invention provides a method and apparatus for controlling the internal body temperature of a patient. According to the present invention, a catheter is inserted through an incision into a large blood vessel of a patient. By selectively heating or cooling a portion of the catheter lying within the blood vessel, heat may be transferred to or from blood flowing within the vessel and the patient's body temperature may thereby be increased or decreased as desired. The invention will find use in treating undesirable conditions of hypothermia and hyperthermia, or for inducing a condition of artificial hypothermia when desired. The method and system further provide for the cooling of initially hypothermic patients whose blood or body temperature has been warmed above the desired target level and the warming of initially hyperthermic patients whose blood or body temperature has been cooled below the desired target temperature. | 07-31-2014 |
20140188016 | Compression Belt System for Use with Chest Compression Devices - A compression belt cartridge for use with chest compression devices. The compression belt cartridge has a double-oar shaped belt and a cover plate through which the belt is threaded. The cover plate is provided with hooks and snap latches that fit into a belt drive platform. The cover plate is sized and dimensioned to fit within only selected platforms. The belt attaches to the means for tightening the belt via a spline attached to the belt. The means for tightening a belt then repetitively tightens the belt, thereby accomplishing chest compressions. | 07-03-2014 |
20140155863 | METHOD FOR A CENTRAL VENOUS LINE CATHETER HAVING A TEMPERATURE CONTROL SYSTEM - A kit of parts comprises a system and instructions for use for controlling patient temperature which uses a central venous line catheter having a heat exchange element. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the heat exchange element. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system. | 06-05-2014 |
20140155793 | Chest Compression Devices for Use with Imaging Systems, and Methods of Use of Chest Compression Devices with Imaging Systems - Devices and methods for performing CPR on a patient within an imaging field of an imaging device. The device has a compression belt and a belt tensioning mechanism, both located on or in the device such that the head, neck, thorax and abdomen of the patient may be place within the imaging field with the compression belt installed about the patient and the belt tensioning mechanism will be located outside of the imaging field. | 06-05-2014 |
20140151017 | HEATING/COOLING SYSTEM FOR INDWELLING HEAT EXCHANGE CATHETER - A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform. | 06-05-2014 |
20140094883 | INTRAVASCULAR HEAT EXCHANGE CATHETER WITH RIB CAGE-LIKE COOLANT PATH - An intravascular heat exchange catheter has serpentine-like supply and return conduits circulating working fluid with a heat exchange system to warm or cool a patient in which the catheter is intubated. | 04-03-2014 |
20140094882 | INTRAVASCULAR HEAT EXCHANGE CATHETER WITH NON-ROUND COILED COOLANT PATH - A catheter has a hollow conduit through which working fluid from a heat exchange system flows. The conduit in turn is configured to extend along a longitudinal central axis in a continuously varying non-constant azimuthal orientation so that it defines a non-round enclosed passageway through which blood can flow to exchange heat through a wall of the conduit with the working fluid flowing within the conduit. | 04-03-2014 |
20140094881 | INTRAVASCULAR HEAT EXCHANGE CATHETER AND SYSTEM WITH RFID COUPLING - A system includes a heat exchange catheter line assembly configured to convey working fluid circulating to and from at least one heat exchange element on an intravascular heat exchange catheter. The system also includes a heat exchange system that itself includes a processor and is configured for fluidly communicating with the heat exchange catheter line assembly to exchange heat with the working fluid. A near filed communication (NFC) member associated with the heat exchange system and an NFC element associated with the heat exchange catheter line assembly are also included. The NFC member is configured to provide the processor with a signal representative of whether the NFC member detects the NFC element. | 04-03-2014 |
20140094880 | INTRAVASCULAR HEAT EXCHANGE CATHETER WITH MULTIPLE SPACED APART DISCRETE COOLANT LOOPS - A catheter has a series of hollow loops arranged along a tube for carrying working fluid from a heat exchange system to exchange heat with a patient in whom the catheter is advanced. The loops when inflated are transverse to the catheter axis and parallel to each other, and circumscribe a hollow passageway through which blood can flow. Blood also flows around the outer perimeters of the loops. | 04-03-2014 |
20140067027 | HEATING/COOLING SYSTEM FOR INDWELLING HEAT EXCHANGE CATHETER - A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform. | 03-06-2014 |
20130325090 | HEATING/COOLING SYSTEM FOR INDWELLING HEAT EXCHANGE CATHETER - A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform. | 12-05-2013 |
20130317398 | Resuscitation Device with Expert System - A resuscitation device for automatic compression of victim's chest using a compression belt which exerts force evenly over the entire thoracic cavity. The belt is constricted and relaxed through a motorized spool assembly which repeatedly tightens the belt and relaxes the belt to provide repeated and rapid chest compression. An assembly includes various resuscitation devices including chest compression devices, defibrillation devices, and airway management devices, along with communications devices and senses with initiate communications with emergency medical personnel automatically upon use of the device. | 11-28-2013 |
20130178923 | Heat Exchange Catheters with Bi-Directional Fluid Flow and Their Methods of Manufacture and Use - Closed loop heat exchange catheters having bi-directional flow heat exchange regions and their methods of manufacture and use. The heat exchange region may be formed of expandable or non-expandable tubular conduit(s) that are configured in a series of loops or coiled configuration defining a supply flow path and a return flow path through which heat exchange medium is circulated. The individual loops of convolutions of the coiled configuration may be the same or different size. In some embodiments, the tubular conduit(s) may be passed through generally transverse bore holes formed in a catheter shaft so that the loops or convolutions of protrude from the catheter shaft. | 07-11-2013 |
20130166005 | SYSTEM AND METHOD FOR LEAK DETECTION IN EXTERNAL COOLING PAD - An externally-applied heat exchange pad has three layers laminated together, an inner and outer non-conductive layer and a middle conductive layer. A leak in the inner layer causes coolant to contact the middle layer and change impedance, which can be sensed and used as an indication of an impending total leak of the pad. | 06-27-2013 |
20130158480 | INDWELLING HEAT EXCHANGE CATHETER AND METHOD OF USING SAME - A catheter is adapted to exchange heat with a body fluid, such as blood, flowing in a body conduit, such as a blood vessel. The catheter includes a shaft with a heat exchange region disposed at its distal end. This region may include hollow fibers which are adapted to receive a remotely cooled heat exchange fluid preferably flowing in a direction counter to that of the body fluid. The hollow fibers enhance the surface area of contact, as well as the mixing of both the heat exchange fluid and the body fluid. The catheter can be positioned to produce hypothermia in a selective area of the body or alternatively positioned to systemically cool the entire body system. | 06-20-2013 |
20130150930 | METHOD AND APPARATUS FOR MODIFYING THE TEMPERATURE OF A PATIENT - A heat exchange fluid supply system for supplying a heat exchange fluid to an intravascular heat exchange catheter includes a disposable cassette having a bulkhead and an external heat exchanger, and which is configured to operate in combination with a reusable master control unit. The bulkhead includes a reservoir section and a pump section. The reservoir section is provided with a means to monitor the amount of heat exchange fluid that is in the system. The bulkhead provides the mechanism for priming the system with heat exchange fluid from an external source and for circulating fluid to the catheter in a closed circuit. The pump section is configured to allow for pumping of heat exchange fluid at a constant pressure. | 06-13-2013 |
20130150929 | METHOD AND SYSTEM FOR CONTROL OF A PATIENT'S BODY TEMPERATURE BY WAY OF A TRANSLUMINALLY INSERTABLE HEAT EXCHANGE CATHETER - Methods and apparatuses for temperature modification of a patient, or selected regions thereof, including an induced state of hypothermia. The temperature modification is accomplished using an in-dwelling heat exchange catheter within which a fluid heat exchange medium circulates. A heat exchange cassette of any one of several disclosed variations is attached to the circulatory conduits of the catheter, the heat exchange cassette being sized to engage a cavity within one of various described re-usable control units. The control units include a heater/cooler device, a user input device, and a processor connected to receive input from various sensors around the body and the system. The heater/cooler device may be thermoelectric to enable both heating and 15″ cooling based on polarity. A temperature control scheme for ramping the body temperature up or down without overshoot is provided. The disposable heat exchange cassettes may include an integral pump head that engages with a pump drive mechanism within the re-usable control unit. More than one control unit may be provided to receive the same heat exchange cassette so that, for example, a large capacity control unit can be used initially, and a smaller, battery-powered unit can be substituted once the patient reaches the desired target temperature. | 06-13-2013 |
20130123673 | CPR Assist Device Adapted for Anterior/Posterior Compressions - A resuscitation device for automatic compression of a victim's chest using a compression belt operably attached to a platform upon which a patient rests. In use, the compression belt is wrapped around the patient and at least one spindle operably attached to the platform. | 05-16-2013 |
20130090709 | METHOD AND APPARATUS FOR REGIONAL AND WHOLE BODY TEMPERATURE MODIFICATION - Methods and apparatuses for temperature modification of a patient, or selected regions thereof, including an induced state of hypothermia. The temperature modification is accomplished using an in-dwelling heat exchange catheter within which a fluid heat exchange medium circulates. A heat exchange cassette of any one of several disclosed variations is attached to the circulatory conduits of the catheter, the heat exchange cassette being sized to engage a cavity within one of various described re-usable control units. The control units include a heater/cooler device, a user input device, and a processor connected to receive input from various sensors around the body and the system. The heater/cooler device may be thermoelectric to enable both heating and | 04-11-2013 |
20130090708 | Endovascular Cooling Catheter System which Employs Phase-Changing Heat Exchange Media - Devices and methods for cooling all or part of the body of a human or animal subject by inserting a heat exchange catheter into the subject's body and infusing into or through the catheter a heat exchange medium that contains liquid phase matter and frozen solid phase matter, wherein at least some of the solid phase matter melts while in the catheter. | 04-11-2013 |
20130090593 | Heat Exchange Catheter and Their Methods of Manufacture and Use - A closed loop catheter useable for heat exchange is manufactured by forming a plurality of generally transverse bore holes though a flexible, multilumen catheter body, lacing a tube trough the bore holes so that loops of the tube protrude from the catheter body, connecting one end of the tube to an inflow lumen of the catheter and connecting the other end of the tube to an outflow lumen of the catheter. A heated or cooled heat exchange medium may then be circulated through the tube while the catheter is inserted in the vasculature of a subject, thereby resulting in heat exchange between the subject's flowing blood and the heat exchange medium being circulated through the tube. | 04-11-2013 |
20130079859 | SELF-CENTERING PATIENT TEMPERATURE CONTROL CATHETER - A patient temperature control catheter ( | 03-28-2013 |
20130073014 | PATIENT TEMPERATURE CONTROL CATHETER WITH OUTER SLEEVE COOLED BY INNER SLEEVE - A catheter has an inner sleeve through which refrigerant circulates to and from a source of refrigerant. The catheter also has an outer sleeve surrounding the inner sleeve, including a distal end thereof. The outer sleeve is filled with a frozen biocompatible substance. The refrigerant is separated from the biocompatible substance by one or more walls of the inner sleeve such that the refrigerant is isolated from a patient in whom the catheter is positioned by both the inner sleeve and the frozen biocompatible substance. The refrigerant circulates through the catheter when the catheter is positioned in the patient to maintain the biocompatible substance frozen as heat is transferred from the patient to the biocompatible substance. | 03-21-2013 |
20130072830 | Chest Compression Devices for Use with Imaging Systems, and Methods of Use of Chest Compression Devices with Imaging Systems - Devices and methods for performing CPR on a patient within an imaging field of an imaging device. The device has a compression belt and a belt tensioning mechanism, both located on or in the device such that the head, neck, thorax and abdomen of the patient may be place within the imaging field with the compression belt installed about the patient and the belt tensioning mechanism will be located outside of the imaging field. | 03-21-2013 |
20130060311 | HEATING/ COOLING SYSTEM FOR INDWELLING HEAT EXCHANGE CATHETER - A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform. | 03-07-2013 |
20130060173 | Automated CPR Chest Compression Device with Feedback from a Chest Compression Monitor - A piston-based automated CPR chest compression device with accelerometer feedback. | 03-07-2013 |
20130060172 | Automated CPR Chest Compression Device with Feedback from a Chest Compression Monitor - A piston-based automated CPR chest compression device with accelerometer feedback. | 03-07-2013 |
20130046365 | HEATING/ COOLING SYSTEM FOR INDWELLING HEAT EXCHANGE CATHETER - A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform. | 02-21-2013 |
20130046232 | Method for a Central Venous Line Catheter Having a Temperature Control System - A kit of parts comprises a system and instructions for use for controlling patient temperature which uses a central venous line catheter having a heat exchange element. The central venous line catheter is provided with one or more lumens for providing access to the central blood supply of the patient, and with additional lumens for communicating heat exchange fluid to the heat exchange element. Heat exchange fluid temperature is controlled through a feed back loop in which patient temperature is sensed and used to control a temperature control unit comprising a heating device and/or a cooling device in heat exchange relationship with the heat exchange fluid. A tubing set transports the heat exchange fluid between the central venous line and the temperature control unit, with a pump serving to circulate the fluid in a closed fluid circuit in the system. | 02-21-2013 |
20130038457 | SYSTEM AND METHOD FOR LEAK DETECTION IN EXTERNAL COOLING PAD - An externally-applied heat exchange pad has three layers laminated together, an inner and outer non-conductive layer and a middle conductive layer. A leak in the inner layer causes coolant to contact the middle layer and change impedance, which can be sensed and used as an indication of an impending total leak of the pad. | 02-14-2013 |
20120325426 | HEATING/COOLING SYSTEM FOR INDWELLING HEAT EXCHANGE CATHETER - A cooling system for an indwelling heat exchange catheter includes a heat exchange bath that is configured to receive a conduit that carries saline to and from the catheter. A heating/cooling fluid is in the bath and exchanges heat with the saline. The heating/cooling fluid flows through a heat exchanger that includes a refrigerant and two variable speed DC compressor for removing heat from the refrigerant. A gear pump circulates the working fluid to and from the catheter and is removably engaged with a pump support platform. | 12-27-2012 |
20120283562 | In Situ Modification of Therapeutic Agents Using Heat Exchange Catheter System - Closed loop heat exchange catheter systems and methods for preparing and using such systems wherein a reservoir or fluid bag is connected to the catheter system and used for at least priming of the system with a heat exchange fluid. | 11-08-2012 |
20120277642 | SYSTEM AND METHOD FOR AUTOMATED DETECTION OF BATTERY INSERT - A rechargeable power cell having no voltage across its positive and negative power terminals unless the power cell is inserted into a device configured to accept the power cell is described. The power cell includes a battery management processor and battery insertion detection circuitry that cooperate to determine when the power cell is inserted into the device and then drive an electronic switch to provide for conduction of current from the power cell to the positive terminal of the cell. | 11-01-2012 |
20120276428 | LATCH MECHANISM FOR BATTERY RETENTION - A latch mechanism for retaining a battery within a battery compartment is described. | 11-01-2012 |
20120274395 | BATTERY MANAGEMENT SYSTEM WITH MOSFET BOOST SYSTEM - A boost converter for driving the gate of n-channel MOSFET power devices is described. The boost converter includes a monitoring circuit and a kick start circuit to quickly bring the boost converter online when required to drive the MOSFET on. | 11-01-2012 |
20120274280 | SYSTEM AND METHOD FOR TRACKING AND ARCHIVING BATTERY PERFORMANCE DATA - An intelligent rechargeable battery pack having a battery management system for monitoring and controlling the charging and discharging of the battery pack is described. The battery management system includes a memory for storing data related to the operation of the battery, and the battery management system is also configured to communicate the data related to the operation of the battery to other processors for analysis. | 11-01-2012 |
20120274279 | BATTERY MANAGEMENT SYSTEM FOR CONTROL OF LITHIUM POWER CELLS - An intelligent rechargeable battery pack having a battery management system for monitoring and controlling the charging and discharging of the battery pack is described. The battery management system includes primary and secondary protection circuits for monitoring the charging and discharging of the battery. Individual battery cells forming the battery pack are connected by a main bus to a connector for connection to a battery charger or a device to be powered, and the main bus may be interrupted by a switch controlled by the battery management system to prevent damage to the battery during charging or discharging of the battery. | 11-01-2012 |
20120274266 | VIRAL DISTRIBUTION OF BATTERY MANAGEMENT PARAMETERS - A carrier, such as a battery, that queries a memory of a charger or charging circuit, or the memory of equipment or discharging circuit powered by the battery, to determine the relative date or version of data, operating parameters and/or software on both the battery and the equipment, and either provides updated data, operating parameters and/or software to the equipment, or retrieves later dated data, operating parameters and/or software from the equipment to update the memory of the battery and/or further distribute the updated data, operating parameters and/or software to other batteries or equipment. | 11-01-2012 |
20120226338 | DISPOSABLE CASSETTE FOR INTRAVASCULAR HEAT EXCHANGE CATHETER - A heat exchange fluid supply system for supplying a heat exchange fluid to an intravascular heat exchange catheter includes a disposable cassette having a bulkhead and an external heat exchanger, and which is configured to operate in combination with a reusable master control unit. The bulkhead includes a reservoir section and a pump section. The reservoir section is provided with a means to monitor the amount of heat exchange fluid that is in the system. The bulkhead provides the mechanism for priming the system with heat exchange fluid from an external source and for circulating fluid to the catheter in a closed circuit. The pump section is configured to allow for pumping of heat exchange fluid at a constant pressure. | 09-06-2012 |
20120203201 | Methods for Preparing a Heat Exchange Catheter System and for Heating and/or Cooling a Subject's Body - Closed loop heat exchange catheter systems and methods for preparing and using such systems wherein a reservoir or fluid bag is connected to the catheter system and used for at least priming of the system with a heat exchange fluid. | 08-09-2012 |
20120191166 | SYSTEM AND METHOD FOR DETERMINING AND CONTROLLING CORE BODY TEMPERATUE - Systems and methods for accurate temperature modification of a patient, or selected regions thereof, including inducing hypothermia. The temperature modification is accomplished using an in-dwelling heat exchange catheter within which a fluid heat exchange medium circulates. A heat exchange cassette attached to the circulatory flow lines of the catheter, the heat exchange cassette being sized to engage a cavity within a control unit. A temperature measurement scheme for obtaining body core temperature is provided, including methods of obtaining and analyzing temperature data to provide feedback to the control unit for use in controlling the heating and cooling of the heat exchange medium so as to heat or cool a patient to a desired target temperature. | 07-26-2012 |
20120185022 | INDWELLING HEAT EXCHANGE CATHETER AND METHOD OF USING SAME - A catheter is adapted to exchange heat with a body fluid, such as blood, flowing in a body conduit, such as a blood vessel. The catheter includes a shaft with a heat exchange region disposed at its distal end. This region may include hollow fibers which are adapted to receive a remotely cooled heat exchange fluid preferably flowing in a direction counter to that of the body fluid. The hollow fibers enhance the surface area of contact, as well as the mixing of both the heat exchange fluid and the body fluid. The catheter can be positioned to produce hypothermia in a selective area of the body or alternatively positioned to systemically cool the entire body system. | 07-19-2012 |
20120095536 | METHOD AND SYSTEM FOR CONTROL OF A PATIENT'S BODY TEMPERATURE BY WAY OF A TRANSLUMINALLY INSERTABLE HEAT EXCHANGE CATHETER - Methods and apparatuses for temperature modification of a patient, or selected regions thereof, including an induced state of hypothermia. The temperature modification is accomplished using an in-dwelling heat exchange catheter within which a fluid heat exchange medium circulates. A heat exchange cassette of any one of several disclosed variations is attached to the circulatory conduits of the catheter, the heat exchange cassette being sized to engage a cavity within one of various described re-usable control units. The control units include a heater/cooler device, a user input device, and a processor connected to receive input from various sensors around the body and the system. The heater/cooler device may be thermoelectric to enable both heating and 15″ cooling based on polarity. A temperature control scheme for ramping the body temperature up or down without overshoot is provided. The disposable heat exchange cassettes may include an integral pump head that engages with a pump drive mechanism within the re-usable control unit. More than one control unit may be provided to receive the same heat exchange cassette so that, for example, a large capacity control unit can be used initially, and a smaller, battery-powered unit can be substituted once the patient reaches the desired target temperature. | 04-19-2012 |
20120095282 | 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. | 04-19-2012 |
20110313496 | Method for Controlling a Patent's Body Temperature - The present invention provides a method and apparatus for controlling the internal body temperature of a patient. According to the present invention, a catheter is inserted through an incision into a large blood vessel of a patient. By selectively heating or cooling a portion of the catheter lying within the blood vessel, heat may be transferred to or from blood flowing within the vessel and the patient's body temperature may thereby be increased or decreased as desired. The invention will find use in treating undesirable conditions of hypothermia and hyperthermia, or for inducing a condition of artificial hypothermia when desired. | 12-22-2011 |
20110288432 | VASCULAR INTRODUCER WITH TEMPERATURE MONITORING PROBE AND SYSTEMS FOR ENDOVASCULAR TEMPERATURE CONTROL - An introducer sheath/temperature probe assembly that is insertable into a blood vessel of a human or veterinary patent to measure the temperature of blood flowing through that blood vessel. The introducer sheath/temperature probe assembly may be used in conjunction with an indwelling heat exchange catheter system to warm or cool all or a portion of the patient's body to a desired target temperature and to maintain such target temperature for a desired period of time. | 11-24-2011 |
20110275935 | Methods and Apparatus for Treating or Deterring Injuries to or Disorders of the Brain or Spinal Cord of a Subject - Methods and apparatus for treating or deterring injuries to or disorders of the brain or spinal cord of a subject. A heat exchange catheter device is inserted into the subject's body and used to cause heating or cooling the subject's cerebrospinal fluid. In some embodiments, the heat exchanger may be positioned within the subject's vasculature so as to heat or cool the flowing blood, thereby resulting in heating or cooling of the cerebrobpinal fluid. | 11-10-2011 |
20110270368 | Heat Exchange Catheter System - Closed loop heat exchange catheter systems and methods for preparing and using such systems wherein a reservoir or fluid bag is connected to the catheter system and used for at least priming of the system with a heat exchange fluid. | 11-03-2011 |
20110208278 | METHOD AND APPARATUS FOR REGIONAL AND WHOLE BODY TEMPERATURE MODIFICATION - A heat exchange fluid supply system for supplying a heat exchange fluid to an intravascular heat exchange catheter includes a disposable cassette having a bulkhead and an external heat exchanger, and which is configured to operate in combination with a reusable master control unit. The bulkhead includes a reservoir section and a pump section. The reservoir section is provided with a means to monitor the amount of heat exchange fluid that is in the system. The bulkhead provides the mechanism for priming the system with heat exchange fluid from an external source and for circulating fluid to the catheter in a closed circuit. The pump section is configured to allow for pumping of heat exchange fluid at a constant pressure. | 08-25-2011 |
20110208277 | METHOD AND APPARATUS FOR REGIONAL AND WHOLE BODY TEMPERATURE MODIFICATION - A heat exchange fluid supply system for supplying a heat exchange fluid to an intravascular heat exchange catheter includes a disposable cassette having a bulkhead and an external heat exchanger, and which is configured to operate in combination with a reusable master control unit. The bulkhead includes a reservoir section and a pump section. The reservoir section is provided with a means to monitor the amount of heat exchange fluid that is in the system. The bulkhead provides the mechanism for priming the system with heat exchange fluid from an external source and for circulating fluid to the catheter in a closed circuit. The pump section is configured to allow for pumping of heat exchange fluid at a constant pressure. | 08-25-2011 |
20110208276 | METHOD AND APPARATUS FOR REGIONAL AND WHOLE BODY TEMPERATURE MODIFICATION - A heat exchange fluid supply system for supplying a heat exchange fluid to an intravascular heat exchange catheter includes a disposable cassette having a bulkhead and an external heat exchanger, and which is configured to operate in combination with a reusable master control unit. The bulkhead includes a reservoir section and a pump section. The reservoir section is provided with a means to monitor the amount of heat exchange fluid that is in the system. The bulkhead provides the mechanism for priming the system with heat exchange fluid from an external source and for circulating fluid to the catheter in a closed circuit. The pump section is configured to allow for pumping of heat exchange fluid at a constant pressure. | 08-25-2011 |
20110166634 | INHIBITION OF PLATELET ACTIVATION, AGGREGATION AND/OR ADHESION BY HYPOTHERMIA - A method for treating acute coronary syndromes (i.e., unstable angina or non-Q-wave MI) or transient ischemic attacks in a human or animal patient by placing a heat exchange apparatus in the patient=s vasculature and using that heat exchange apparatus to cool the patient to a temperature (e.g. 30-36_C) at which platelet inhibition (i.e., inhibition of platelet activation and/or aggregation and/or adhesion) occurs. Anti-shivering drugs or anesthesia may be administered to patients whose body temperature is cooled below that patient=s shivering threshold (typically approximately 35.5 C). If it is determined that platelet inhibition is no longer desirable, such as when the patient is about to undergo a surgical or interventional procedure wherein bleeding could be problematic, the hypothermia-induced platelet inhibition may be rapidly reversed by using the intravascular heat exchange apparatus to re-warm the patient=s body to normothermia or near normothermia. | 07-07-2011 |
20110166633 | METHOD OF GASTRIC COOLING USING BALLOON CATHETER - A balloon catheter is used in a closed-loop heat exchange system for manipulating the temperature of a patient. The balloon catheter is positioned in the stomach of the patient, and then expanded with a heat exchange fluid delivered through a lumen formed in the shaft of the catheter. The balloon catheter comes into contact with the wall of the stomach, and the stomach substantially conforms around the expanded balloon catheter. The heat exchange fluid is allowed to flow continuously into and out of the balloon catheter. Heat is exchanged between the balloon catheter and the stomach so as to controllably alter the temperature of at least a portion of the patient. Anti-shivering mechanisms and automatic control based on temperature feedback from the patient may be used in connection with the heat exchange system. | 07-07-2011 |
20110054575 | Methods and Apparatus for Regional and Whole Body Temperature Modification - Methods and apparatus for temperature modification of selected body regions including an induced state of local hypothermia of the brain region for neuroprotection. A heat exchange catheter is provided with heat transfer fins projecting or extending outward from the catheter which may be inserted into selected blood vessels or body regions to transfer heat with blood or fluid in the selected blood vessels or body regions. Another aspect of the invention further provides methods and apparatus for controlling the internal body temperature of a patient. By selectively heating or cooling a portion of the catheter lying within a blood vessel, heat may be transferred to or from blood flowing within the vessel to increase or decrease whole body temperature or the temperature of a target region. Feed back from temperature sensors located within the patient's body allow for control of the heat transfer from the catheter to automatically control the temperature of the patient or of the target region within the patient. The apparatus may include a blood channeling sleeve that directs body fluid over a heat exchanger where the body fluid's temperature is altered, and then is discharged out the distal end of the sleeve to a desired location, for example, cooled blood to the brain for neuroprotection. The catheter may be used alone or in conjunction with other heat exchangers to cool one region of a patient's body while heating another. | 03-03-2011 |
20110022136 | APPARATUS AND METHOD FOR PROVIDING ENHANCED HEAT TRANSFER FROM A BODY - Methods and apparatuses for temperature modification of a patient, or selected regions thereof, including an induced state of hypothermia. The temperature modification is accomplished using an in-dwelling heat exchange catheter within which a fluid heat exchange medium circulates. A heat exchange cassette is attached to the circulatory conduits of the catheter, the heat exchange cassette being sized to engage a cavity within a control unit. The control unit includes a heater/cooler device for providing heated or cooled fluid to a heat exchanger in thermal communication with the fluid heat exchange medium circulating to the heat exchange catheter, a user input device, and a processor connected to receive input from various sensors around the body and the system. A temperature control scheme for ramping the body temperature up or down without overshoot is provided. | 01-27-2011 |
20100152822 | SYSTEM AND METHOD FOR DETERMINING AND CONTROLLING CORE BODY TEMPERATURE - Systems and methods for accurate temperature modification of a patient, or selected regions thereof, including inducing hypothermia. The temperature modification is accomplished using an in-dwelling heat exchange catheter within which a fluid heat exchange medium circulates. A heat exchange cassette attached to the circulatory flow lines of the catheter, the heat exchange cassette being sized to engage a cavity within a control unit. A temperature measurement scheme for obtaining body core temperature is provided, including methods of obtaining and analyzing temperature data to provide feedback to the control unit for use in controlling the heating and cooling of the heat exchange medium so as to heat or cool a patient to a desired target temperature. | 06-17-2010 |
20100030307 | MULTIPLE LUMEN HEAT EXCHANGE CATHETERS - Catheter devices and methods for intravascular heating and/or cooling of human or veterinary patients. The catheter devices generally comprise catheters having inflow and outflow lumens and at least one curvilinear balloon connected to the inflow and outflow lumens such that heat exchange fluid may be circulated through the balloon(s). The catheter is inserted into the vasculature and heated or cooled fluid is circulated through the balloon(s) to heat or cool blood flowing in heat-exchange proximity to the balloon(s), thereby effecting heating or cooling of all or a portion of the patient's body. | 02-04-2010 |
20090254161 | METHOD FOR REDUCING MYOCARDIAL INFARCT BY APPLICATION OF INTRAVASCULAR HYPOTHERMIA - Methods and apparatus for preventing myocardial infarction, or lessening the size/severity of an evolving myocardial infarction, by cooling at least the affected area of the myocardium using an intravascular heat exchange catheter. The heat exchange catheter may be inserted into the vasculature (e.g., a vein) and advanced to a position wherein a heat exchanger on the catheter is located in or near the heart (e.g., within the vena cava near the patient's heart). Thereafter, the heat exchange catheter is used to cool the myocardium (or the entire body of the patient) to a temperature that effectively lessens the metabolic rate and/or oxygen consumption of the ischemic myocardial cells or otherwise protects the ischemic myocardium from undergoing irreversible damage or infarction. | 10-08-2009 |
20090247963 | VALVED CONNECTOR ASSEMBLY AND STERILITY BARRIERS FOR HEAT EXCHANGE CATHETERS AND OTHER CLOSED LOOP CATHETERS - A connector assembly for catheters having closed loop flow circuits, such as some balloon catheters and heat exchange catheters. The connector assembly comprises first and second connector bodies that may be connected and disconnected from one another. When the connector bodies are disconnected, a syringe or negative pressure source may be attached to withdraw residual fluid from the catheter's closed loop circuit and to deflate any expandable portion of the closed loop circuit (e.g., balloon or expandable heat exchanger). A one way flow valve prevents make up air or other fluid from entering the catheter while the negative pressure is being applied. Also disclosed are sterility barrier assemblies for all types of catheters. Such sterility barrier assemblies are operative to prevent contamination of the portion of a catheter that remains outside of a patient's body so that the catheter may subsequently be further advanced into the patient's body without introducing microbes or other contaminants into the patient's body. | 10-01-2009 |