6results about How to "Prevent thrombosis" patented technology

This application provides a blood pressure sensor, comprising: a tubing having a first end and a second end disposed opposite to each other, the first end being for connecting to a blood vessel, and the second end being for injecting a pressure measuring medium; a pressure sensor disposed in the tubing and used for measuring the liquid pressure in the tubing; and a filter element installed at the first end, or installed between the first end and the pressure sensor. The filter element is used to filter blood cells in the blood entering the tubing from the first end, while allowing the pressure measuring medium to pass through. In this application, the filter element prevents large particles such as blood cells from entering the tubing, preventing blood cells from agglomerating and forming thrombi in the tubing, and also preventing blood from being flushed back into the blood vessel, causing a series of serious consequences such as arterial embolism, myocardial infarction, and pulmonary embolism. Simultaneously, the filter element allows the pressure measuring medium to pass through, thereby ensuring smooth pressure measurement.

The utility model provides an intravascular thrombus aspiration catheter. The intravascular thrombus aspiration catheter comprises an internal flow channel, a far-end aspiration catheter section, a middle catheter section and a near-end driving catheter section, and the internal flow channel is sequentially communicated with the far-end aspiration catheter section, the middle catheter section and the near-end driving catheter section from the far end of the intravascular thrombus aspiration catheter to the near end of the intravascular thrombus aspiration catheter. Wherein the intravascular thrombus aspiration catheter further comprises an aspiration inlet and an outflow window, and the internal flow channel is communicated with the aspiration inlet and the outflow window; a filter screen is arranged in an inner flow channel of the middle guide pipe section and is positioned between the suction inlet and the outflow window; at least one of the far-end suction catheter section, the middle catheter section and the near-end driving catheter section is detachably connected, and the suction inlet is formed in the far-end suction catheter section. According to the intravascular thrombus aspiration catheter provided by the invention, due to the segmented detachable design, the use convenience is facilitated.

The application discloses a valve prosthesis, comprising a stent and a sealing member, the sealing member is sleeved on the outer side wall of the stent, and the sealing member comprises a filling part which protrudes towards the direction of the outflow end of the stent. Thus, by arranging the sealing member around the outer side wall of the stent, the sealing member can fill the gap between the stent and the native valve ring, and by arranging the filling part of the sealing member, the filling part protrudes towards the direction of the outflow end of the stent, so that the filling part can extend into the semi-closed area at the commissure of the valve leaflets after implantation, thereby extruding the blood in the semi-closed area and preventing the blood from being retained in the semi-closed area to form a thrombus.

The invention provides a balloon plugging device for ultrasonic 3D printing, which comprises a multi-cavity catheter, the multi-cavity catheter comprises an outer layer protective sleeve, an inflation catheter and an ink delivery pipe, the inflation catheter and the ink delivery pipe are located in the outer layer protective sleeve, and the axes of the outer layer protective sleeve, the inflation catheter and the ink delivery pipe are parallel; the outer-layer protective sleeve is provided with a first sealing face and a second sealing face which are perpendicular to the axis, the first sealing face is the front end face of the outer-layer protective sleeve, the second sealing face is located at one end close to the front end face of the outer-layer protective sleeve, and the position, between the first sealing face and the second sealing face, of the outer-layer protective sleeve is connected with a pneumatic balloon. The pneumatic balloon is communicated with a cavity between the first sealing surface and the second sealing surface; the front end of the inflation catheter is communicated with the pneumatic balloon, and the front end of the ink conveying pipe extends out of the first sealing face. Blood flow and uncured acoustic ink can be physically isolated through the pneumatic balloon, the ink is prevented from being washed away by the blood flow, and meanwhile, hydrogel particles of the acoustic ink are prevented from entering blood to cause thrombus.

The invention discloses a safety management system and method for invasive arterial blood pressure monitoring, and belongs to the technical field of medical monitoring. The system comprises five core modules, namely an external liquid pressurization monitoring module, a catheter state intelligent sensing module, an intelligent timing tube washing control module, a dynamic automatic zero calibration module and a safety management center platform, integrates pressure, temperature and humidity, seepage, body position and other multi-mode sensors, combines an AI algorithm and a clinical rule engine, and is in butt joint with an HIS / LIS system to obtain the blood coagulation index of a patient. Automatic monitoring and alarming of flushing fluid pressure, early warning of catheter blockage / blood return / bleeding / infection, individualized intelligent catheter flushing, automatic zero calibration of body position and time linkage and full-period catheter management can be achieved, and industrial standards of T / SHNA 0004-2023 and the like are met. The method obviously reduces the occurrence rate of human errors and clinical adverse events, improves the nursing efficiency, and is suitable for intensive care, operating rooms and other scenes needing continuous hemodynamic monitoring.

The invention discloses a rehabilitation body position supporting system integrating temperature control and pressurization functions, and relates to the technical field of medical instruments, the rehabilitation body position supporting system comprises a supporting piece, a temperature control assembly and a pressure circulation assembly, the supporting piece is provided with a plurality of liquid bag supporting pads used for supporting limbs, and the temperature control assembly and the pressure circulation assembly are arranged on the supporting piece. The temperature control assembly is used for controlling the temperature of the liquid media in the multiple liquid bag supporting pads. The pressure circulation assembly is used for circularly and independently pressurizing and depressurizing the multiple liquid bag supporting pads so as to form gradient pressure waves on the multiple liquid bag supporting pads. According to the rehabilitation body position supporting system integrating the temperature control and pressurization functions, a liquid medium in the liquid bag supporting pad can be heated or cooled through the temperature control assembly so that cold compress or hot compress can be conducted on a patient, and the effects of relieving swelling and easing pain are achieved; the pressure circulation assembly can sequentially and independently pressurize and depressurize the liquid bag supporting pads, so that gradient pressure waves are formed on the liquid bag supporting pads, and the effect of preventing thrombus is achieved.