9 results about "Massive bleeding" patented technology

The invention provides a wound dressing for wound hemorrhage. The wound dressing is prepared from the following components in parts by mass: 20 to 25 parts of cationic cassava starch, 10 to 13 parts of polyethylene glycol, 1.2 to 1.8 parts of xanthan gum, 0.1 to 0.2 part of cannabidiol, 6 to 8 parts of tannic acid modified chitosan, 1.8 to 2.5 parts of a polydopamine solution with the concentration of 5mg / mL and 1 to 1.5 parts of nano-hydroxyapatite. The wound dressing has an instant hemostatic effect and a long-acting tissue regeneration induction capability.

The invention discloses a multi-section gelatin sponge filling type puncture channel plugging device and a plugging method thereof.The multi-section gelatin sponge filling type puncture channel plugging device comprises a sleeve which is of a long and thin tubular structure, a cylindrical base is integrally formed at the rear end of the sleeve, a wedge-shaped inlet is formed in the base, and scale marks are arranged on the outer surface of the sleeve; the inner core is formed by sequentially arranging a plurality of sections of independent short columnar medical gelatin sponge units, and the inner core is accommodated in the front section of the cannula; the diameter of the pushing rod is matched with the inner diameter of the sleeve, the pushing rod is inserted into the sleeve, and an expanded handheld part is arranged at the rear end of the pushing rod; according to the scheme, the puncture channel can be safely, conveniently and efficiently blocked after the percutaneous intervention puncture channel is established, a small amount of bleeding of the puncture channel is effectively treated, and the risks of secondary bleeding and massive bleeding are reduced or eradicated, so that the related operation safety is improved, and the occurrence rate of related adverse events is reduced.

This invention discloses a composite hemostatic sponge for deep and narrow wounds with massive bleeding and its preparation method. The composite hemostatic sponge is prepared by low-temperature polymerization and cross-linking of gelatin, dopamine, quaternized chitosan, and oxidized dextran, followed by freeze-drying. The composite hemostatic sponge possesses advantages such as high hemostatic efficiency, water-triggered shape recovery behavior, high compressive strength, strong antibacterial activity, safety and non-toxicity, and good blood / biocompatibility. It can effectively prevent fatal bleeding from deep and narrow wounds by combining physical and chemical hemostasis. The composite hemostatic sponge prepared by this invention has widely available raw materials, a simple preparation method, and can be mass-produced, showing potential clinical application value in bleeding scenarios such as deep and narrow wounds and ballistic injuries.

This invention discloses a pressure-adjustable extravascular occlusion balloon with drainage and flushing function, relating to the field of vascular hemostasis technology. It includes a tubing wall with a C-shaped front end. Several balloons that can compress each other are arranged inside the C-shaped tube. A balloon catheter is inserted through the tubing wall, with one end connected to the balloon and the other end extending out from the rear end of the tubing wall. This invention can quickly control massive bleeding, achieving hemostasis without causing permanent loss of blood supply to the controlled blood vessel, thus avoiding related complications caused by ischemia.

The invention provides a first-aid hemostasis robot and a control method thereof.The first-aid hemostasis robot comprises a robot body capable of walking on the ground and a mechanical arm which is arranged on the robot body and has multiple degrees of freedom, the mechanical arm is provided with a pressing head and a plugging piece, and the pressing head is used for conducting pressing hemostasis on blood vessels of a bleeding opening; the plugging piece is carried by a flexible continuum robot, the front end of the continuum robot is provided with a camera used for collecting information of a bleeding part, and the plugging piece can stretch into a bleeding opening through the continuum robot and expand after plugging the bleeding opening so as to seal a bleeding large blood vessel. The mechanical arm carries the pressing head and the plugging piece to stop bleeding of massive hemorrhage under different conditions, if the hemorrhage is split hemorrhage, pressing hemostasis is carried out at the proximal end of corresponding arterial hemorrhage or the distal end of corresponding venous hemorrhage through the pressing head, and if the hemorrhage is fractured hemorrhage, the plugging piece extends into a wound through the continuum robot, so that the hemorrhage is stopped. And sealing bleeding large blood vessels.

The application discloses a head compression tourniquet, and relates to the technical field of medical auxiliary instruments, which comprises a compression band, and a plurality of annular main adjusting air bags are arranged on the inner side wall of the compression band. The setting of the triangular block, the rotating shaft, the connecting plate, the U-shaped rod, the first wedge-shaped block, the second wedge-shaped block, the limiting rod and the adjusting spring realizes automatic switching of the compression position of the patient while guaranteeing the hemostasis effect, avoids problems such as blood vessel adhesion, end tissue necrosis and the incapability of growing hair caused by the compression of the same position for a long time during a craniotomy operation, and the setting of the pressure relief valve enables the self-adaptive adjustment of the inflation amount of the head circumference of different positions of the head during the switching of the auxiliary air bag, so that the same pressure effect of the head is maintained during the switching of the auxiliary air bag, the problems of insufficient pressure and massive bleeding of the wound do not occur, and the problem of excessive pressure and the occlusion of the blood vessels of the patient to form thrombus does not occur.

The utility model discloses a radial artery timed reminding compressor used after a cardiovascular intervention operation, and relates to the technical field of medical instruments. Comprising a compression belt, the compression belt is made of a transparent PVC material, a connecting structure is fixed to the face, opposite to a tablet pressing air bag, of the compression belt, and a timer is installed through the connecting structure for compression timing setting; the timer is installed on the connecting structure of the compression belt, the compression belt is worn on the wrist of a patient, the connecting air valve is inserted into an injector to inject air, and the air is input into the tablet pressing air bag through the connecting hose to enable the tablet pressing air bag to expand, so that the proximal end is compressed, pressure is applied to the artery to control blood flow, and massive bleeding is prevented. Medical staff can set an alarm clock through the timer, after the set time is up, an injector can be inserted into the connecting air valve to exhaust and deflate the tablet pressing air bag, the pressing time is prevented from being too long, manual exhaust in a timing mode is high in safety, and mechanical faults are not prone to occurring.

This invention discloses a rapid hemostatic powder material for massive bleeding, which is tannic acid-modified carboxymethyl chitosan. This invention also provides a preparation method and application of the rapid hemostatic powder material for massive bleeding, as well as a rapid hemostatic microgel composition containing the powder material. The rapid hemostatic powder material and microgel composition of this invention possess excellent water solubility, hemostatic properties, and biocompatibility, while also exhibiting multiple functions such as bactericidal, anti-inflammatory, and wound-healing promotion, which is beneficial for the rapid healing of the wound site after hemostasis.

The invention relates to a composite sponge based on calcium silicate biological ceramic and a preparation method and application thereof, St-Nor and HS-PEG-SH are prepared into a polymer precursor solution, a proper amount of modified anion polysaccharide-sodium alginate is introduced, then the prepared CS is added into the polymer solution, and after foaming treatment, cross-linking curing and freeze drying, the composite sponge based on calcium silicate biological ceramic is obtained. A series of composite sponges based on calcium silicate biological ceramics are obtained, the composite sponges not only have good water absorption capacity and rapid shape recovery capacity, but also have relatively strong mechanical properties, have the potential of expandable hemostatic sponges in incompressible and massive hemorrhage applications, have relatively strong water absorption capacity and macroporous structures, and are suitable for large-scale popularization and application. When the sponge is in contact with blood, blood components such as blood platelets and red blood cells can be effectively enriched, and meanwhile, CS in the sponge plays an important role in accelerating the blood coagulation process. The negative charges in the sponge activate the blood coagulation factor XII and thrombin to trigger the blood coagulation cascade rapid reaction, and further enhance the thrombus strength through the interaction with fibrinogen, so that the sponge has an enhanced hemostatic effect in a massive hemorrhage model and a massive hemorrhage model in a blood dilution state.