22 results about "Massive bleeding" patented technology

The invention discloses a liver, gall and pancreas clinical puncture sampling device in the technical field of medical instruments, which comprises a base, a mechanical arm is fixedly connected to the base, a puncture needle is arranged at the top end of the mechanical arm, a guide rail for mounting the puncture needle is fixedly connected to the top end of the mechanical arm, a pushing part is slidably matched with one side of the guide rail, and the puncture needle is fixedly connected with the pushing part. The base is further fixedly connected with a pump assembly and a fixed arm, the top end of the fixed arm is fixedly connected with a multi-mode integrated sensor, and the side wall of the fixed arm is fixedly connected with a controller. By integrating a plurality of functional layers, the puncture needle can achieve a plurality of functions in single puncture, the mechanical arm is controlled to guide the puncture process of the puncture needle and compensate respiratory movement displacement through model construction and displacement prediction of the controller, and bleeding stopping gel is sprayed in a self-adaptive mode through resistance borne during needle insertion, so that massive bleeding is avoided; therefore, the efficiency of the hepatobiliary pancreas puncture operation is improved, the possibility of tissue bleeding infection is reduced, and the painless treatment experience of a patient is improved.

The invention discloses a radial artery compression hemostat, and aims to solve the problems that a current radial artery compression hemostat cannot accurately measure the pressure on a patient in the use process, so that the pain of the patient is easily increased; the technical problem that a screen display device on the hemostat cannot be used normally due to the fact that a button battery cannot be replaced in time due to sudden power failure during use is solved, the hemostat structurally comprises a hemostasis device and a pressurization device, and the hemostasis device comprises a supporting plate, a compression pad and a bandage; the compression pad is fixedly connected to the bottom of the supporting plate, the two ends of the bandage are sleeved with the sleeve buckles at the two ends of the supporting plate, and the pressurizing device comprises a rotary knob and a rotary rod. The hemostat can accurately measure the pressure and relieve the pain of a patient, is greatly helpful for medical treatment, is suitable for patients with little bleeding and massive bleeding, is convenient for popularization of surgery and internal medicine, improves the treatment efficiency, and strives for operation time for doctors.

The invention relates to the technical field of biopsy sampling, and discloses a gastroenterology biopsy sampler which comprises a biopsy sampling head and a gastroscope head body located on one side of the biopsy sampling head, a sampling hole is formed in the gastroscope head body, and the biopsy sampling head is slidably connected into the sampling hole. The biopsy sampling head is internally provided with a sampling port, one end of the sampling port is provided with an adsorption hole, the adsorption hole is communicated with the biopsy sampling head, and the other end of the sampling port is slidably connected with an arc-shaped cutter; an elastic assembly is fixed to the inner wall of the biopsy sampling head, the cutting position of an arc-shaped cutter connected to a sampling opening in a sliding mode can be adjusted, human tissue in the sampling opening can be conveniently cut, the purpose that a human tissue incision is smooth in the cutting process can be achieved, the sampling wound surface of the human tissue can be reduced, and the sampling efficiency is improved. A sampling part is not prone to bleeding, wound healing is not affected, and therefore the sampling effect is improved.

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.

The invention discloses a head compression tourniquet, which relates to the technical field of medical auxiliary instruments and comprises a compression belt, and a plurality of annular main adjusting air bags are arranged on the inner side wall of the compression belt. Through arrangement of a triangular block, a rotating shaft, a connecting plate, a U-shaped rod, a first wedge-shaped block, a second wedge-shaped block, a limiting rod and an adjusting spring, the compression position of a patient can be automatically switched while the hemostasis effect is guaranteed, and the situation that the same position is compressed all the time through a craniotomy for several hours, and consequently blood vessels are bonded is avoided; the problems that when the auxiliary air bag is switched, the end tissue is necrotic, and hair cannot grow out are solved, by arranging a pressure release valve, the inflation volume of head circumference changes of different positions of the head is adjusted in a self-adaptive mode when the auxiliary air bag is switched, and therefore the effect that the auxiliary air bag is switched to keep the same pressure on the head all the time is achieved; the problem of massive bleeding of a wound due to insufficient pressure is avoided, and the problem of thrombus caused by blood vessel blockage of a patient with overhigh pressure is also avoided.

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.

The present invention is a novel vascular punch that uses a positive pressure force to separate the tissue of the target blood vessel. The present invention is specifically designed to punch large round holes in vascular surgery without causing heavy bleeding. The side-biting punch mechanism realizes a punching method that uses positive force cutting to achieve a neat incision without wear. The side-biting vascular punch includes a U-shaped razor blade, a baffle for stopping the blade, and a linkage mechanism that brings the razor blade to the surface of the baffle, which forms an aligned contact line that can generate positive pressure to cut the tissue on the target blood vessel. The semi-rigid pad installed on the baffle can reduce errors during part manufacturing and assembly, and the adjustable baffle can further improve the formation of the cutting line to improve cutting efficiency. The best embodiment of the side-biting punch includes a four-bar linkage and a scissor-like single pivot mechanism, and the handle drives the side-biting punch action and generates the required cutting force. The former realizes translational bite cutting, and the latter realizes rotational bite cutting of the razor blade and the baffle.

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 discloses a vaginal dilator which comprises a handle, a lower blade connected with the handle in a bent mode and an upper blade rotationally connected to one end of the handle. A drainage groove is formed in the bottom of the lower blade, a drainage tube suitable for being connected with an aspirator is arranged in the drainage groove, a tube body suitable for containing a lens and a lighting piece is arranged on the inner side, close to the lower blade, of the upper blade, the drainage tube is tightly attached to the bottom wall of the drainage groove, and the tube body is tightly attached to the inner top wall of the upper blade. The drainage tube is arranged in the dilator, extra operation space is not occupied, influence on the operation field is avoided, the operation can be carried out without pulling the drainage tube away in the operation, overflow blood can still be sucked out and discharged out of the body of a patient when massive bleeding and continuous bleeding occur in the operation, and influence on observation of the operation field due to the fact that blood exists in the dilator is avoided; the tube body for accommodating the lens and the illuminating part is arranged in the tube body, so that operation field illumination can be conveniently carried out when an operator carries out an operation, line bodies of the lens and the illuminating part can be prevented from influencing the operation field, and limitation on the operation field caused by overlapping of operation instruments is avoided.

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 present invention provides a method and system for predicting the risk of embolism and massive bleeding based on a causal Transformer model, including: step S1: obtaining clinical data of patients with atrial fibrillation, and preprocessing the obtained patient clinical data to obtain preprocessed patient clinical data; step S2: standardizing the preprocessed patient clinical data of different time series lengths, decomposing the standardized patient clinical data into dynamic variables and static variables, and generating multidimensional features; step S3: constructing a prediction model based on the Causal Transformer model, and training the prediction model using multidimensional features to obtain a trained prediction model; step S4: using the trained prediction model to predict the probability of embolism and massive bleeding of the target object within a preset time period in the future.

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 present invention discloses an intelligent monitoring method and system for evaluating the safety of cesarean section surgery, which relates to the field of medical technology. The method includes: in the case where the risk value is greater than a preset risk value threshold, before performing a cesarean section surgery, using a digital angiography machine and a color Doppler ultrasound imaging device to monitor the image data below the opening of the patient's renal artery; determining the target position for placing the balloon and the balloon occlusion parameters according to the monitored image data; and inserting the balloon into the patient's abdominal aorta and fixing it according to the target position; during the cesarean section surgery, at the moment when the fetus is delivered or when the patient enters a massive bleeding state, filling the balloon according to the amount of saline required to fill the balloon and the abdominal aortic balloon occlusion time; while starting to fill the balloon, starting to monitor the lower limb pulse oxygen of the patient to evaluate the pelvic and lower limb ischemia condition. This application realizes the improvement of the safety of cesarean section surgery.

The invention belongs to the technical field of biological materials, and discloses chitin shape memory hemostatic sponge as well as a preparation method and application thereof. The chitin shape memory hemostatic sponge disclosed by the invention is prepared from chitin nanofibers through a solvent replacement method, and the hemostatic sponge has a nanoscale-to-micron multistage communicated pore structure. According to the method, hydrogen bond rearrangement of chitin nanofibers is regulated by adjusting the acidity of a dispersion liquid system, then the sponge material with exposed functional groups in chitin is prepared through solvent replacement, blood platelets, red blood cells and blood coagulation protein can be effectively gathered and attracted, and therefore hemostasis is accelerated; the structure of the hemostatic material has a multi-stage communicated pore structure, so that the hemostatic material is high in water / blood absorption speed, is suitable for hemostasis of massive bleeding and non-compressible wounds and penetrable wounds, can also be used as a carrier of local analgesic and anti-inflammatory drugs, realizes controlled release of the drugs, and further promotes wound healing.

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.

The utility model relates to the technical field of medical auxiliary equipment, in particular to a field operation blood collection and transfusion device. Comprising a storage box, a box cover and a plurality of blood collection and transfusion integrated bags, the storage box is of a hollow structure with an opening in the upper end, the upper wall of the storage box is hinged to the box cover, the box cover covers the opening of the storage box, a plurality of fastening mesh bags are arranged in the storage box, and the blood collection and transfusion integrated bags are placed in the fastening mesh bags; the blood collection and transfusion integrated bag is of a hollow structure with an opening in the upper end, the upper end of the blood collection and transfusion integrated bag is sealed through a self-sealing strip, a blood collection module and a blood transfusion module are arranged in the blood collection and transfusion integrated bag, the blood collection module is used for storing tools needed by blood collection in a sealed mode, and the blood transfusion module is used for storing tools needed by blood transfusion in a sealed mode; blood sampling and blood transfusion can be integrated, blood sampling and blood transfusion are facilitated, and the optimal blood transfusion time of a hemorrhage soldier cannot be affected by finding a blood sampling tool or a blood transfusion tool.

The invention belongs to the technical field of medical instruments, and provides a multifunctional hepatobiliary surgery hemostat which comprises an injector assembly, the injector assembly is an inflatable injector, the front end of the injector assembly is fixedly connected with a compression assembly, and a fixing assembly is arranged on the outer side of the compression assembly; through the compression effect of the compression air bag, blood vessels can be quickly compressed, so that bleeding is effectively controlled, namely, the risk of massive bleeding in a hepatobiliary surgery or a trauma process can be effectively reduced by performing local pressure on a bleeding part, and the small air bag can be quickly and safely connected with an injector through the Luer connection design; the compression air bag is simple in structure and convenient to operate and adjust pressure, the pressure in the compression air bag can be adjusted by injecting different amounts of air through the injector so as to achieve the optimal hemostatic effect, and when the compression air bag expands outwards, the pressure can be buffered and dispersed through redundant gaps of the sponge belt, so that damage to skin or tissue caused by direct compression is avoided.

The present invention particularly relates to an ultrasonic positioning in-vivo sampling needle, which comprises a box body. A cover plate is detachably arranged on the front side of the box body. A needle insertion port is arranged on the right side of the bottom of the box body. An ultrasonic probe is arranged on the left side of the needle insertion port. A clamping plate is slidably arranged in the box body in the left-right direction. A hemostatic syringe is clamped on the left side of the clamping plate, and a sampling syringe is clamped on the right side of the clamping plate. A sampling needle is arranged in the sampling syringe. The upper part of the sampling syringe is a rotating mechanism. A hemostatic needle is arranged in the hemostatic syringe; the present invention can realize sampling of the diseased part of a patient, and can timely stop bleeding at the sampling part after sampling, which is fast and accurate and saves operation time; the sample can be quickly removed after sampling. The method of combining an expandable balloon with medical absorbent cotton for hemostasis can quickly stop bleeding. The expandable balloon can squeeze the wound to prevent massive bleeding. At the same time, cold water can also cause bleeding at the wound. The combination of medical absorbent cotton and a hemostatic agent can perform pharmaceutical hemostasis on the wound.

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 utility model relates to the technical field of medical instruments, and discloses a detector which comprises a main body mechanism and a connecting mechanism, the connecting mechanism is located above the main body mechanism, and the main body mechanism comprises a monitor body, a detection circuit board and a first flexible binding belt. According to the detector, by installing the main body mechanism, when the monitor body carries out protection work on the arteriovenous fistula, the wrist strap type connecting mechanism not only provides a protection effect on the arteriovenous fistula part, but also can carry out blood leakage monitoring on the arteriovenous fistula part in real time in cooperation with the design of the sensing electrode slice and the detection circuit board; the blood leakage monitoring device has the advantages that the blood leakage monitoring device is simple in structure and convenient to use, an alarm can be given to achieve a reminding effect when blood leakage occurs, threat of massive bleeding to the life of a patient is avoided, manual monitoring by medical staff is not needed, the working intensity of the medical staff is relieved, and the use safety and protection performance of the monitor are improved.

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.