Abstract:
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.
Abstract:
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 degrees 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 degrees 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.
Abstract:
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.
Abstract:
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.
Abstract:
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.
Abstract:
A method of reducing the likelihood of shivering comprises monitoring at least one physiological characteristic in a human or animal subject to detect preshivering and acting to reduce the likelihood of shivering when preshivering is detected.
Abstract:
Systems, methods and devices for utilizing heat transfer parameters or energy expenditure of devices providing controlled hypothermia, normothermia or hyperthermia to detect changes, or the absence of changes, a patient's endogenous set-point temperature; which is not available during exogenously induced targeted temperature management. A particular embodiment would allow detection of fever in patients undergoing targeted temperature managed.
Abstract:
A CPR chest compression device with a cooling exhaust flow path configured to direct cooling air flow through the device. A CPR chest compression device with a battery retainer interoperable with the control system to provide for controlled shut-down when an operator attempts to remove the battery during operation.
Abstract:
A system includes a battery pack having an archive, and a portable medical device configured to releasably receive the battery pack. The portable medical device includes a memory and a processor controlled by commands embedded in and/or executed upon the processor and configured to collect, in the memory, operational history data and/or performance data related to the functioning of the portable medical device during use, and load, from the memory to the archive of the battery pack, the operational history data and/or performance data. The battery pack is configured to enable transfer of the operational history data and/or performance data of the portable medical device to a network or server.
Abstract:
A catheter includes a catheter body, a first lumen extending through the catheter body, one or more second lumens extending through the catheter body, and two or more capillaries extending from the catheter body and coupled to the second lumens. The first lumen performs at least one of receiving a sample of the blood from a vasculature of the patient or measuring a parameter of the blood. The second lumens receive a gas enriched liquid from a gas enriched liquid source. The capillaries receive the gas enriched liquid from the one or more second lumens and to simultaneously dispense respective streams of the gas enriched liquid directly into the vasculature, such that the streams of the gas enriched liquid intersect and mix with the blood in a region beyond an end of the catheter body and beyond the first lumen.