84results about How to "Good hemostatic effect" patented technology

The invention relates to a mussel-like polylipoic acid-based hydrogel adhesive as well as a preparation method and application thereof, and the preparation method comprises the following steps: (1) uniformly mixing a sericin solution and a caffeic acid solution, then carrying out grafting reaction to obtain a reaction solution, and carrying out dialysis treatment and drying on the reaction solution to obtain sericin grafted caffeic acid; (2) adding lipoic acid into the lithium hydroxide solution, stirring until the lipoic acid is completely dissolved, then adding sericin grafted caffeic acid, and heating for reaction to obtain a PTALi-CAS mixture; and (3) cooling the PTALi-CAS mixture, so as to obtain the mussel-like polylipoic acid-based hydrogel adhesive. The dual-network PTALi-CAS hydrogel adhesive obtained in the invention realizes wet adhesion and rapid hemostasis, has excellent comprehensive performance, and is beneficial to providing a good repair environment for wounds as a wound dressing.

The invention discloses a preparation method of a composite spray for improving the hemostatic ability of a wound part, the composite spray comprises a liquid A and a liquid B. The liquid B is a sodium alginate aqueous solution, a preparation method of the solution A comprises the following steps: 1, dissolving a lipopeptide conjugate, cholesterol, distearoyl phosphatidylcholine, distearoyl phosphatidylserine and dimethyl sulfoxide in a chloroform-methanol mixed solution to obtain a mixed system; 2, preparing the mixed system into a precursor solution by utilizing a film hydration method; 3, adding calcium chloride into the precursor solution, and reacting in a dark place to obtain a solution A; a precursor solution is designed according to the function of natural platelets, the function of the precursor solution is equivalent to that of nano platelets, the precursor solution is matched with sodium alginate, adverse effects on a blood coagulation system caused by fibrin degradation, platelet activation capability reduction and the like of a wound part due to blood loss can be relieved in a targeted manner, and the preparation has the advantages of rapid hemostasis, good biological activity, no toxic or side effects and the like. And the wound healing is rapid.

The invention relates to the field of hemostasis, in particular to an emergency surgery compression type hemostasis device which comprises a support, a supporting plate is fixedly connected to the top end of the support, a screwing rod is fixedly connected to one end of a first threaded rod, a connecting shaft is slidably connected to the other end of the first threaded rod in an embedded mode, and a hemostasis plate is fixedly connected to the bottom end of the connecting shaft. The bottom end of the hemostasis plate is of an arc-shaped structure, an air bag is fixedly connected to the bottom end of the hemostasis plate, gathering assemblies are symmetrically installed on the side wall of the hemostasis plate, a cold compress assembly is installed on the side wall of the air bag, and a connecting assembly is installed between a first threaded rod and the hemostasis plate. According to the compression hemostasis device, the connecting assembly is arranged, and the first wedge-shaped block and the second wedge-shaped block are matched with each other, so that the moving position distance of the hemostasis plate is consistent, the pressure is consistent, the problem that the pressure is inconsistent during compression hemostasis is avoided, compression hemostasis operation is facilitated, and the practicability of the device is improved.

The invention discloses a flexible and stable three-layer porous structure hemostatic dressing and a preparation method thereof, and belongs to the technical field of biological medicine. The preparation method of the hemostatic dressing comprises the following steps: constructing a stable foaming system by using protein and polysaccharide, constructing a dual three-dimensional network by combining multi-source polysaccharide and tannic acid, and designing a large-area dressing structure by overlapping the dual three-dimensional network with cotton gauze; carrying out Ca < 2 + > cross-linking impregnation and freeze drying in a weak acid environment to prepare an integrally formed three-layer dual-network multi-source porous structure dressing; the dressing has three layers of different structures, has an extremely fast hemostatic effect, reduces the amount of bleeding, can effectively maintain the humidity of a wound, avoids invasion and infection of bacteria, and can quickly and effectively sterilize; good shape maintaining and recovering capability is realized; meanwhile, the advantages of the porous structure and the cotton gauze are integrated, the structure is enriched, the structural stability of the large-area dressing is improved, the dressing can be stored for a long time in a normal-temperature environment, and the physical basic performance of the dressing meets the requirements of medical dressings.

The preparation method comprises the following steps: grinding an iodine block to obtain iodine powder, adding the iodine powder into double distilled water, and carrying out ultrasonic stripping to obtain an iodine nanosheet suspension; under the conditions of stirring and water bath heating, dissolving polyvinyl alcohol with double distilled water to obtain a polyvinyl alcohol solution, adding sodium alginate in batches, and continuously stirring in a water bath to obtain a moldable composite hydrogel precursor solution; dissolving tannic acid by adopting an iodine nanosheet suspension, then adding into the moldable composite hydrogel precursor solution, uniformly stirring at room temperature, adjusting the pH value of the solution to be neutral, finally dropwise adding a borax solution, and stirring into gel to obtain the I2 / PBST moldable antibacterial composite hydrogel. The prepared composite hydrogel not only can play an antibacterial role and reduce the bacterial infection probability of infection sites, but also has excellent properties such as plasticity, stretchability, self-healing property, adhesion and degradability, is convenient to fill defect parts with different shapes, and is firm in adhesion.

The invention discloses a chitosan nanofiber-based hemostatic sponge and a preparation method thereof, and belongs to the field of dressing preparation. The chitosan nanofiber-based hemostatic sponge is mainly prepared from chitosan nanofibers, alginate, amorphous calcium salt and a cross-linking agent. The chitosan nanofiber is used as a main framework of the hemostatic sponge, and blood cells and platelets can be conveniently adsorbed due to a large number of amino groups and high porosity; due to the existence of alginate, blood clots can be conveniently formed after the hemostasis sponge absorbs blood; the existence of calcium promotes the initiation of a blood coagulation cascade reaction and synergistically accelerates the hemostasis effect. The three components are combined to complement each other, so that the hemostatic sponge has more excellent hemostatic performance, and an excellent blood coagulation and hemostasis effect is achieved after all aspects are integrated.

The invention relates to the technical field of medical materials, in particular to a hydrocolloid dressing and a preparation method thereof.The hydrocolloid dressing comprises a base film, a functional layer and release paper which are sequentially stacked; the functional layer is prepared from the following raw material components in parts by weight: 15 to 45 parts of sodium carboxymethyl cellulose; 1-5 parts of an aluminum-containing hemostatic; 3-20 parts of an alkaline antibacterial agent; and 30-70 parts of a viscous substance. According to the hydrocolloid dressing provided by the invention, through the synergistic effect of the aluminum-containing hemostatic agent and the alkaline antibacterial agent in the functional layer, the hemostatic performance of the hydrocolloid dressing is improved, and meanwhile, the hydrocolloid dressing is beneficial to protecting a wound, inhibiting microorganism growth at the wound and promoting wound healing.

This invention belongs to the field of biomedical materials technology, specifically relating to a chitosan hemostatic sponge and its preparation method. This patent addresses the problems of residual acetic acid and side reactions, low strength, and low absorbency caused by cross-linking methods during the preparation of chitosan hemostatic sponges. It innovatively proposes a method for physically cross-linking chitosan hemostatic sponges using hydrogen bonding-electrostatic synergistic superabsorbency based on alcohol-regulated substances. By introducing alcohols to regulate the electrostatic interaction between chitosan amino groups and acetic acid, while simultaneously adjusting the hydrogen bonding interaction between chitosan molecules, and introducing other polymer materials to construct a semi-interpenetrating network, the overall material properties are enhanced. The chitosan hemostatic material prepared by this process, although without the addition of cross-linking agents, still exhibits an insoluble sponge-like structure, good flexibility, and excellent absorbency and hemostatic effect.

The utility model relates to a male perineum postoperative protection device which comprises a waistband, an opening and closing type protection cover and a fixing patch. The opening-closing type protective cover is correspondingly and fixedly connected below the front side of the waistband, a limiting groove is formed in the middle of the upper end of the opening-closing type protective cover, and a limiting through hole is formed in the middle of the lower end; the fixing paste is correspondingly and fixedly connected to the lower area of the inner wall of one side of the opening and closing type protective cover. According to the utility model, the perineum can be supported and protected, the indwelling catheter can be externally fixed and protected, the catheter can be fixed between two legs of a patient, the catheter is prevented from moving along with the change of the body position of the patient, the patient can also be prevented from drawing the catheter accidentally, urinary system infection and urethral mucosa injury are reduced, and the safety is improved.

The utility model discloses a pair of haemostatic forceps for biopsy, which belongs to the technical field of medical instruments and comprises a straight rod, biopsy forceps are hinged to the lower end of the straight rod, a connecting steel rope is fixedly connected to one end, close to the straight rod, of the biopsy forceps and penetrates through the straight rod, and a grip is fixedly connected to one end, far away from the biopsy forceps, of the straight rod. A winding groove is formed in the grip, a winding roller is rotationally connected in the winding groove, the connecting steel rope is wound at the outer end of the winding roller, a rotating block is rotationally connected to the outer end of the grip, the rotating block is fixedly connected with the winding roller, a micro air pump is fixedly connected between the straight rod and the grip, and the outer ends of the straight rod and the biopsy forceps are both sleeved with soft air bags. The aim of protecting the straight rod and the outer end of the biopsy forceps by inflating the soft air bag and expanding the soft air bag can be achieved, meanwhile, blood vessels are extruded through expansion of the soft air bag, and therefore the effect of temporarily stopping bleeding is achieved, and the effects of protection and bleeding stopping are effectively improved.

The application provides a first-aid hemostasis robot and a control method thereof. The first-aid hemostasis robot comprises a robot main body capable of walking on the ground, a mechanical arm with multiple degrees of freedom arranged on the robot main body, a pressing head and a blocking piece arranged on the mechanical arm, the pressing head is used for pressing and hemostasis of a blood vessel of a bleeding port, the blocking piece is carried by a flexible continuum robot, a front end of the continuum robot is provided with a camera used for collecting information of a bleeding site, the blocking piece can be inserted into the inside of the bleeding port through the continuum robot and expanded after blocking the bleeding port to seal a large blood vessel of the bleeding port. The mechanical arm carries the pressing head and the blocking piece to perform hemostasis on different conditions of large bleeding respectively, if the bleeding is of a split type, the pressing head is used for pressing and hemostasis at a proximal end of an artery bleeding or a distal end of a vein bleeding, if the bleeding is of a broken type, the blocking piece is inserted into a wound through the continuum robot to seal a large blood vessel of the bleeding.

The utility model discloses a kind of laser device and laser therapeutic instrument, including first laser, second laser, beam synthesis subassembly and optical fiber;The first laser is used for emitting holmium laser towards the beam synthesis subassembly;The second laser is used for emitting thulium laser towards the beam synthesis subassembly;The beam synthesis subassembly is used to beam combining the holmium laser emitted by the first laser and the thulium laser emitted by the second laser into mixed light beam, and the mixed light beam is output to the optical fiber.Wherein, laser device can generate the mixed light beam of holmium laser and thulium laser when working to beam combining, and mixed light beam is guided to target position (such as the region needing treatment) by optical fiber, so that corresponding treatment can be carried out using mixed light beam, so that the treatment effect of holmium laser and thulium laser can be considered.

The invention discloses an external hemostatic and a preparation method thereof. The external hemostatic comprises the following components in parts by weight: 10-20 parts of lignum dalbergiae odoriferae, 5-10 parts of herba ecliptae and 5-10 parts of herba agrimoniae. The preparation method of the external hemostatic comprises the following steps: 1) raw material preparation: respectively preparing the dalbergia wood, the eclipta alba and the hairyvein agrimony in parts by weight; 2) crushing treatment: respectively crushing the lignum dalbergiae odoriferae, the herba ecliptae and the herba agrimoniae by using a crusher, and respectively sieving the crushed raw materials with a sieve of 80-100 meshes to obtain lignum dalbergiae odoriferae fine powder, herba ecliptae fine powder and herba agrimoniae fine powder; (3) uniformly mixing: stirring and mixing the obtained lignum dalbergiae odoriferae fine powder, herba ecliptae fine powder and herba agrimoniae fine powder, and sufficiently and uniformly mixing all the components; step 4) sterilization treatment: sterilizing the uniformly mixed medicinal powder; (5) bottling and sealing: putting the sterilized medicinal powder into a clean bottle, sealing, and storing in a dark place.

The invention discloses a method for fixing a metal organic framework material Zn-BDC on the surface of a substrate material under the assistance of polytannic acid, which comprises the following steps: step 1, at room temperature, firstly soaking a clean substrate material in a weakly alkaline tannic acid aqueous solution, and then sequentially cleaning and drying to obtain a substrate material with the surface modified with a polytannic acid coating; 2, the substrate material with the surface modified with the polytannic acid coating is soaked in a zinc acetate solution, then cleaned and dried in sequence, then soaked in a 1, 4-sodium terephthalate solution, and then cleaned and dried in sequence; and step 3, repeating the step 2 for multiple times to obtain the substrate material modified by the metal organic framework material Zn-BDC. The method is easy to operate and environmentally friendly, Zn-BDC can be stably fixed to the surface of the substrate material, and the substrate material is endowed with good antibacterial and hemostatic performance.

The embodiment of the invention provides a clip instrument and a control method thereof. The clip instrument includes: a clip arm; the storage tube is used for storing the near end of the clamping arm; the near end of the storage tube is in releasable connection with the far end of the sheath tube; when the clamping arms move from the far end to the near end, the storage tube and the sheath tube can be directly actuated to be released, and / or the clamping arms and the storage tube can be directly actuated to be locked.

The utility model discloses a shear mode radio frequency electrocoagulation instrument with a special coating, which comprises a handle, the handle comprises a handle upper shell and a handle lower shell, the shear mode radio frequency electrocoagulation instrument also comprises a forceps head, a cutter bar fixing seat and a cutter bar, the forceps head is connected with the cutter bar fixing seat, and the middle part of the cutter bar penetrates into the cutter bar fixing seat after penetrating through a silicon rubber case and is connected with the cutter bar fixing seat; a lantern spring is inserted into the tail portion of the screwdriver rod, a five-core socket assembly is inserted into the lantern spring, and a plug part of the five-core socket assembly is sleeved with the handle tailstock. The cutter bar fixing seat is inserted into the handle so as to fix the cutter bar on the handle; the handle lower shell is provided with a handle lower shell clamping groove b, a silica gel sheet, a flexible circuit board and a large and small gear switch button are sequentially placed in the handle lower shell clamping groove b, the large and small gear switch button is in contact with the flexible circuit board, and the cutter bar is connected with the flexible circuit board. The large and small gear switch button arranged on the upper portion of the handle is used for adjusting radio frequency intensity, and operation time is saved.

The radial artery compression hemostasis device comprises a supporting plate, bandages are arranged at the two ends of the supporting plate, protective pads used for protection are arranged on the inner surfaces of the bandages, an outer cylinder is arranged above the supporting plate, and an inner cylinder is rotationally arranged in the outer cylinder; a base is arranged at the bottom of the outer cylinder and arranged on the upper surface of the supporting plate. The bottom of the inner cylinder penetrates through the supporting plate, an inflatable air bag is arranged at the end of the bottom, and a timer is arranged on one side of the base and connected with the supporting plate through a support. The radial artery compression hemostasis device with the structure is simple in structure, compression hemostasis of the radial artery is achieved in two ways by adjusting the pressure of the outer cylinder and the air bag, and compared with an existing hemostasis device, the radial artery compression hemostasis device is more convenient to adjust and better in hemostasis effect.

The invention belongs to the technical field of medical hemostasis equipment, and provides a hemostasis compression device. The clamp comprises a clamp main body, wherein the clamp main body comprises a clamping clamp, a torsion spring and an abutting clamp; one end of the abutting clamp is hinged to one end of the clamping clamp. The other end of the abutting clamp is connected with the other end of the clamping clamp in an abutting mode. The torsional spring is installed at the hinged position of the clamping clamp and the abutting clamp. The compression mechanism is mounted on the clamp main body; the pressing mechanism comprises a hydraulic sleeve and a pushing assembly; the number of the hydraulic sleeves is two, and the hydraulic sleeves are installed on the clamping clamp and the abutting clamp correspondingly. All the parts are close to the body bleeding position and abut against the body bleeding position; at least one pushing assembly is arranged on the clamp main body, and the pushing assembly is used for pushing liquid into the hydraulic sleeve; the hydraulic sleeve is in a tubular shape and is made of expansion and contraction silica gel materials.

The invention belongs to the technical field of medical instruments, and particularly relates to a medical hemostasis device which comprises a hemostasis frame. The inner wall of the hemostasis frame is rotationally connected with a first rotating rod; the exterior of the first rotating rod is fixedly connected with a wrist strap; a second rotating rod is rotationally connected to the side, away from the first rotating rod, of the inner wall of the hemostasis frame. According to the medical hemostasis device, the wrist strap is inserted into the matching plate to form a ring capable of being contracted and adjusted, so that the medical hemostasis device can adaptively press puncture hole parts for arms or legs with different thicknesses, the situation that bleeding occurs to the puncture hole parts for a long time is reduced, and a first insertion rod is inserted into the matching plate to fix the wrist strap; and the position of the hemostasis layer can be greatly adjusted by sliding the matched sliding block between the first supporting frame and the second supporting frame, and the position of the hemostasis layer can be slightly adjusted by sliding the matched sliding rod on the inner wall of the matched sliding block.

This invention relates to a urinary catheter for post-prostatectomy, comprising an outer sheath, a catheter disposed inside the outer sheath, and an expansion component disposed on the surface of the outer sheath. Compared with the prior art, this invention, through the protruding structure on the surface of the balloon, allows the doctor to achieve hemostasis on the wound after prostatectomy via the balloon. The protruding structure can closely fit the uneven interior of the wound after surgery, resulting in better hemostasis compared to the smooth balloon surface in the prior art. At the same time, since the interior of the protrusion is connected to the interior of the balloon, the expansion size of the protrusion during the balloon inflation phase can be affected by the unevenness of the wound surface, avoiding excessive pressure on the post-operative wound area. In addition, the design of multiple sub-protrusions can increase the contact area after the balloon is filled with water or air, resulting in better compression hemostasis.

The invention relates to a traditional Chinese medicine split formula composition for warming kidney, strengthening marrow, reinforcing qi, nourishing yin, generating blood and stopping bleeding and a preparation method thereof. The traditional Chinese medicine composition is prepared from four traditional Chinese medicinal materials, namely melanterite, American ginseng, sea horse and cinnamon. According to the formula of the traditional Chinese medicine composition, on the basis of a compound melanterite pill formula, the formula of the compound melanterite pill is split, and the optimal formula is obtained through a large number of clinical pharmacodynamic tests. The medicine has the effects of warming kidney, strengthening marrow, reinforcing qi, nourishing yin, generating blood and stopping bleeding; the traditional Chinese medicine composition is mainly used for treating aplastic anemia, leucopenia, thrombocytopenia, myelodysplastic syndrome, bone marrow injury caused by radiotherapy and chemotherapy, kidney-yang deficiency caused by leucopenia and qi-blood deficiency. The clinical pharmacodynamic test effect of the compound melanterite pill is remarkably improved compared with that of the compound melanterite pill, and the compound melanterite pill is high in bioavailability and free of any toxic and side effects.

The application relates to a spinning fiber and a preparation method thereof. The spinning fiber is prepared from raw materials including polyvinyl alcohol and chitosan in a mass ratio of (6-8):(2-4) through solution jet spinning of a mixed crosslinked product of the raw materials. The application provides a spinning fiber which is prepared from a mixed and crosslinked product of chitosan and polyvinyl alcohol in a specific mass ratio through solution jet spinning. The polyvinyl alcohol has better hydrophilicity than the chitosan, and the chitosan has a network structure after interpenetration and crosslinking with the polyvinyl alcohol, so that the hydrophilicity of the chitosan is improved, the swelling degree is increased, the hemostatic effect is better, the effusion of a wound can be effectively absorbed, the wound can be dried, and bacterial reproduction can be prevented.

The utility model belongs to the technical field of hemostasis, and particularly relates to a compression hemostasis device used after limb puncture in interventional therapy. An expansion bag is fixedly installed on the inner side of the rear plate, an inner box is fixedly installed on the back face of the rear plate, hemostatic sponge is arranged on the surface of the expansion bag, a booster pump is arranged in the inner box, a reinforcing rod is fixedly installed on the outer side of the booster pump, and a power transmission ring plate is fixedly installed on the outer side of the reinforcing rod. Through the arrangement of the rear plate, an expansion space can be conveniently provided for the expansion bag, the rear plate is made of a rubber material and can be better attached to the skin, the experience feeling of a user can be enhanced, the expansion bag can be controlled by a booster pump on the back of the expansion bag to expand, and a hemostatic sponge is arranged on the surface of the expansion bag; the hemostatic sponge can be synchronously attached to a wound, hemostatic liquid medicine contained in the hemostatic sponge is squeezed out and smeared to the wound, the hemostatic capacity of the device can be greatly improved through the hemostatic liquid medicine, and therefore the recovery efficiency of a patient is improved.

The utility model provides a kind of composite medical cotton yarn pad, including base layer and the absorption layer being set to the upside of base layer, the middle part of absorption layer is provided with shallow groove, shallow groove is provided with hemostatic layer, hemostatic layer protrudes absorption layer, the upside of absorption layer is covered with release paper, release paper completely covers hemostatic layer, the downside of base layer or the edge of absorption layer is provided with fixing part.The composite medical cotton yarn pad has the advantages of scientific design, easy operation, good hemostatic effect, and is convenient for use in hemostatic medicine application process.

The invention provides medical-grade tissue-like natural collagen as well as a preparation method and application thereof, and relates to a biomedical material. The invention provides a preparation method of medical grade tissue-like natural collagen, which comprises the following steps: removing subcutaneous tissue of animal skin, soaking in normal saline, sequentially carrying out degreasing treatment, unhairing treatment, swelling removal treatment, acid swelling treatment, ball milling, pH value adjustment to 7-7.4, solid-liquid separation, washing the obtained solid component with water, and drying to obtain the medical grade tissue-like natural collagen. The medical-grade tissue-like natural collagen is obtained. The medical grade tissue-like natural collagen prepared by the invention has good biocompatibility, proper biodegradability, good mechanical properties and excellent thermal stability and structural stability, is low in antigenicity and easy to preserve, can quickly and effectively stop bleeding and promote wound healing and repair, and has a wide application prospect. The material is an ideal material for biomedical materials.

The application discloses a posterior naris filling device with a ventilation tube, which comprises a blind end, a ventilation tube body and a filling capsule body, wherein the filling capsule body is fixedly arranged in the blind end and covers three fourths of the surface of the blind end; a ventilation hole is arranged in the region of the blind end which is not covered by the filling capsule body; and the rear end of the blind end is communicated with the ventilation tube body. The posterior naris filling device with the ventilation tube is inserted into the nasal cavity and the nasal meatus or the inferior nasal meatus, the filling capsule body fills the posterior naris, the ventilation tube body supplies air to the rear end of the nasal cavity of the patient through the ventilation hole of the blind end, the pain of the patient during the filling process and after the filling is reduced, the blind end is adapted to the shape of the nasopharynx and is fixed by the filling capsule body, and the blind end is not easy to move with the swallowing activity, so that the patient can also breathe through the nose after the filling, the discomfort after the filling is greatly reduced, and the treatment effect and the comfort of the hemostasis by filling are greatly improved.

The invention relates to a hemostatic powder dressing and discloses a hemostatic powder dressing and a preparation method thereof.The preparation method comprises the steps that chitosan powder is dissolved in an acetic acid solution to obtain an acetic acid solution, the acetic acid solution is homogenized, and then solid-liquid separation, cleaning and freeze-drying treatment are conducted in sequence to obtain chitosan sponge; and grinding the chitosan sponge, mixing the ground chitosan sponge with the bioglass, and sieving to obtain the hemostatic powder dressing. Chitosan and bioglass are combined by means of chemical reaction and physical mixing, absorption of wound exudate is effectively promoted while a physical barrier is formed on the surface of a wound, finally, the hemostasis process is accelerated, and the hemostasis effect of chitosan is effectively optimized.

This invention relates to a two-component cross-linked oxidized nanocellulose spray hemostatic gel, its preparation method, and its application, belonging to the field of biomedical materials. Addressing the problems of weak adhesion, insufficient mechanical properties, and biocompatibility risks in existing hemostatic materials, this invention introduces aldehyde groups using sodium periodate to prepare an adhesive component (TOCN-CHO), and simultaneously modifies the carboxyl groups of TOCN with lysine to create a cross-linking component (TOCN-Lys). After the two components are sprayed and mixed, the aldehyde groups of TOCN-CHO bind to the amino groups on the tissue surface to achieve wound sealing. Simultaneously, the amino groups of TOCN-Lys form a Schiff base cross-linking network in situ with the aldehyde groups of TOCN-CHO, enhancing mechanical strength while eliminating aldehyde toxicity. The gel retains shear-thinning properties and can be sprayed. Animal experiments show that the hemostasis time is reduced to 28 seconds. It also exhibits biodegradability and renewability, effectively solving the problem of synergistic optimization of adhesion, mechanical strength, and biocompatibility, making it suitable for emergency hemostasis and surgical scenarios.

The invention relates to the technical field of digestive tract hemostasis, in particular to a digestive tract hemostat for the digestive system department. The fixed sleeve is fixedly mounted on the inner side wall of the insertion end of the insertion tube; the four arc-shaped plates are distributed in an annular array and are fixedly mounted at one end, far away from the insertion pipe, of the fixed sleeve; and the holding plate is fixedly mounted at one end, far away from the fixed sleeve, of the insertion tube. Compared with the prior art, after the pesticide spraying nozzle is connected with the pesticide pump through the quick-plug connector, the angle of the pesticide spraying nozzle can be adjusted according to the condition of a bleeding point, the guide opening is arranged to be S-shaped, so that the angle of the pesticide spraying nozzle can be changed when the guide block slides in the guide opening, pesticide spraying operation is more flexible, and the pesticide spraying effect is better. Meanwhile, when the length of the bleeding point is large, the medicine spraying nozzle can conduct swinging medicine spraying, and it is further ensured that the bleeding point can be subjected to comprehensive hemostasis in time.

The application discloses a hemostatic device applied to various irregular wounds and belongs to the technical field of medical first-aid equipment, which comprises a solid syringe and a medical polyvinyl alcohol sponge strip; the medical polyvinyl alcohol sponge strip can be axially and radially expanded and is punched into a wound by the device, and the sponge strip is used for omnibearing compression hemostasis; meanwhile, the segmented design of the sponge strip allows the selection of a proper number of segments according to the actual length of the wound, so that the wound can be completely covered; after the sponge strip enters the wound, the sponge strip rapidly absorbs blood and expands, generates uniform pressure, effectively seals blood vessels and achieves the purpose of hemostasis; the radial and lateral expansion of the hemostatic sponge strip is realized, the irregular wound is fully covered, the hemostasis effect is remarkably improved, the segmented design makes the hemostatic device capable of flexibly adapting to wounds of different sizes and shapes, the use of additional cutting tools is reduced, the operation process is simplified, the efficient hemostasis mechanism shortens the treatment time, reduces the risk and discomfort of patients and improves the success rate of first aid.