Abstract: The present disclosure relates to an anticoagulant-coated microporous hollow fiber membrane showing reduced thrombogenicity. The disclosure further relates to a method for producing the membrane and a filtration and/or diffusion device comprising the membrane.

Abstract: Improved tourniquet apparatus for measuring a patient's limb occlusion pressure includes an inflatable tourniquet cuff for encircling a limb at a location and to which a tourniquet instrument is releasably connectable.

Abstract: An integrated tourniquet system enables the user to establish with suitable warnings, and with timely user confirmation, individualized maximum pressure levels in the cuff that may be above normal maximum pressure levels. Also provided is a rapid and accurate method of testing for leakage in the cuff and connectors. The system is adapted for communication to remote devices for receiving and providing information relating to the pressure levels, tests, etc.

Abstract: Tourniquet effector system estimates and indicates the pressure gradients produced on the surface of the body by an effector, thereby allowing the pressure gradients to be minimized. The system also detects and monitors blood flow beneath the effector, thereby allowing the pressure applied by the effector to be regulated near the minimum necessary to stop blood flow past the effector.

Abstract: An apparatus for estimating the distance of penetration (66) of arterial blood into a portion of a patient limb (6) encircled by a tourniquet cuff (2) comprising a cuff (2), a physiologic transducer (24), estimation means (74) and control means (70). The physiologic transducer (24) is associated with the cuff (2) and adapted for sensing a physiologic parameter indicative of penetration of arterial blood into the limb portion (6) encircled by the cuff (2) while blood flow past the limb portion (6) is stopped. The estimation means (74) responds to an output of the physiologic transducer (24) and produces an estimate of penetration of arterial blood past the proximal edge (60) of the cuff (2). The control means (70) responds to the estimation means (74) for facilitating the control of the pressure applied to the patient limb (6) by the cuff (2) to stop the flow of blood in the artery (58) by maintaining the estimated distance of penetration (66) near a selected penetration distance.

Abstract: Improved tourniquet apparatus for measuring a patient's limb occlusion pressure includes an inflatable tourniquet cuff for encircling a limb at a location and to which a tourniquet instrument is releasably connectable.

Abstract: Apparatus for estimating a magnitude of leakage from a surgical tourniquet system while pressure in a cuff of the system is regulated near a reference pressure.

Abstract: An adaptive surgical tourniquet comprises: an inflatable cuff for encircling a limb of a patient; pressurizing means for pressurizing the cuff; pressure relief means for depressurizing the cuff; cuff pressure sensing means for sensing cuff pressure; limb occlusion pressure sensing means for sensing the patient's initial limb occlusion pressure at a selected time; physiologic characteristic sensing means for sensing a physiologic characteristic of the patient; and pressure regulator means for establishing an adapted limb occlusion pressure that is a predetermined function of the initial limb occlusion pressure and the physiologic characteristic, wherein the pressure regulator means is operable after the initial limb occlusion pressure is sensed for selectably activating the pressurizing means and the pressure relief means to maintain the cuff pressure above the adapted limb occlusion pressure for a time period suitably long for the performance of a surgical procedure.

Abstract: Tourniquet effector system estimates and indicates the pressure gradients produced on the surface of the body by an effector, thereby allowing the pressure gradients to be minimized. The system also detects and monitors blood flow beneath the effector, thereby allowing the pressure applied by the effector to be regulated near the minimum necessary to stop blood flow past the effector.

Abstract: An integrated tourniquet system enables the user to establish with suitable warnings, and with timely user confirmation, individualized maximum pressure levels in the cuff that may be above normal maximum pressure levels. Also provided is a rapid and accurate method of testing for leakage in the cuff and connectors. The system is adapted for communication to remote devices for receiving and providing information relating to the pressure levels, tests, etc.

Abstract: Apparatus for estimating a magnitude of leakage from a surgical tourniquet system while pressure in a cuff of the system is regulated near a reference pressure.

Abstract: Improved tourniquet apparatus for measuring a patient's limb occlusion pressure includes an inflatable tourniquet cuff for encircling a limb at a location and to which a tourniquet instrument is releasably connectable.

Abstract: An adaptive surgical tourniquet comprises: an inflatable cuff for encircling a limb of a patient; pressurizing means for pressurizing the cuff; pressure relief means for depressurizing the cuff; cuff pressure sensing means for sensing cuff pressure; limb occlusion pressure sensing means for sensing the patient's initial limb occlusion pressure at a selected time; physiologic characteristic sensing means for sensing a physiologic characteristic of the patient; and pressure regulator means for establishing an adapted limb occlusion pressure that is a predetermined function of the initial limb occlusion pressure and the physiologic characteristic, wherein the pressure regulator means is operable after the initial limb occlusion pressure is sensed for selectably activating the pressurizing means and the pressure relief means to maintain the cuff pressure above the adapted limb occlusion pressure for a time period suitably long for the performance of a surgical procedure.