36 results about "Deep wounds" patented technology

The utility model relates to a deep wound surface filling dressing, which belongs to the technical field of medical dressings, comprises a dressing base body made of alginate, and is characterized by further comprising a structural core fixedly connected in the dressing base body and made of fibrilia and microcapsules fixedly connected on the outer surface of the dressing base body, the structural core is arranged in the length direction of the dressing base body in a full-length mode, and the microcapsule comprises a capsule wall with an inner cavity for sealing the active probiotics. The multifunctional hemostatic bandage has multiple functions of stopping bleeding, resisting bacteria, promoting wound healing, being easy to take out and the like, and due to the fact that a material fusion mode is adopted, the multifunctional hemostatic bandage is low in manufacturing cost and high in manufacturing efficiency, brings good news to patients and has great popularization value.

This invention discloses a wound cleaning and nursing device for medical care, belonging to the field of medical care equipment technology. It includes a main unit, a rinsing device, a waste suction device, and a fixation device. The rinsing device generates negative pressure within a negative pressure tube using the Venturi effect, drawing in outside air and spraying a spiral water stream through a first nozzle, a guide plate, and a third nozzle. Simultaneously, a water stream containing dense bubbles is sprayed through a second nozzle, utilizing the cavitation effect to achieve deep wound cleaning. The waste suction device is mounted on the nozzle via a ball joint, using negative pressure generated by a negative pressure pump to immediately recover waste fluid. The fixation device generates ultrasonic vibrations through an energy guide plate and a transducer to assist in the removal of small debris from the wound, and, in conjunction with bandages and fixation rings, achieves stable limb immobilization. This invention solves the problems of incomplete wound cleaning and limited rinsing effects in existing wound cleaning equipment, significantly improving the effectiveness and efficiency of wound cleaning and nursing care.

The present invention discloses a formulation of curcumin basedpowder spray that includes 95% Curcuma longa 2-6 %w / w, isopropyl myristate 01-0.2 %w / w, Aluminum Starch Octynyl Succinate 3-7 %w / w, n-pentane 18.7-22.7 %w / w and propellant 68-72 %w / w. Also disclosed is a process for preparation of the formulation of curcumin based antiseptic powder spray. This powder spray of the present invention is applied by spraying the same from an aluminum can directly on to a wound site to provide antiseptic protection without physically touching the wound. The powder spray is enhanced with the healing properties of turmeric (Curcuma longa), forming a protective layer on the wound site, effectively treating deep wounds, cuts, and abrasions from infections.

The application discloses an antibacterial hollow mesoporous silica ball injectable hydrogel dressing and a preparation method thereof, and belongs to the technical field of hydrogel dressing preparation. The antibacterial hollow mesoporous silica ball injectable hydrogel dressing provided by the application is obtained by self-crosslinking of a four-arm polyethylene glycol modified by o-phthaldehyde as a crosslinking agent and a hollow mesoporous silica ball loaded with tannic acid in a solvent. Compared with the prior art, the antibacterial hollow mesoporous silica ball injectable hydrogel dressing provided by the application can be gelled without the participation of catalase, has a better gelation time, and can be injected and in-situ formed, so that deep wounds can be treated (the existing hydrogel is too fast or too slow in gelation, and can only be directly made into a gel for use in shallow wounds); moreover, the mechanical strength of the gel can be improved; and the hydrogel dressing has good biocompatibility, degradability, antibacterial property and good repair promoting capacity.

The deformable hemostasis device comprises a tubular connecting body, a balloon is installed on the connecting body, a far-end drainage opening is formed in the end, extending out of the balloon, of the connecting body, and at least one near-end drainage opening is formed in the side, located on the outward side of the balloon, of the connecting body; the balloon is connected with an inner core, the inner core is arranged in the connecting body in a penetrating manner, and a drainage channel is formed between the inner core and the inner wall of the connecting body; a flushing and injecting opening and an outer end drainage opening are formed in the outward end of the connecting body, and the flushing and injecting opening and the outer end drainage opening are obliquely arranged relative to the connecting body. The hemostatic device is simple in structure, reasonable in design and easy and convenient to operate, the transparent hose serves as a connecting body, the balloon can be stuffed into the inner side of a deeper wound through the hose for hemostasis, meanwhile, the outer end drainage opening is connected with the external connecting pipe, liquid in the wound is drained, hemostasis is effectively assisted, and the hemostatic effect is good. The size of the balloon can be adaptively changed along with contraction of the wound part, adaptability is high, and the hemostasis effect is good.

The invention discloses a starch-based medical adhesive as well as a preparation method and application thereof, and particularly relates to the technical field of biomedical materials. The method comprises the following steps: firstly, adding modified starch 1 into water, and heating, stirring and gelatinizing in an oil bath pan to obtain a modified starch 1 solution; adding the modified starch 2 into water, and heating, stirring and gelatinizing in an oil bath pan to obtain a modified starch 2 solution; mixing the modified starch 1 solution and the modified starch 2 solution, and uniformly stirring to obtain a modified starch compound; and finally, performing low-temperature freezing treatment on the modified starch compound, performing freeze-drying treatment, and crushing the freeze-dried modified starch compound to obtain the starch-based medical adhesive. The medical adhesive disclosed by the invention has good biocompatibility, can be degraded into a non-toxic and harmless product in an organism, has relatively strong wet tissue adhesion strength and good tissue compliance, is simple in process, can directly act on skin wounds, deep wounds and wounds which are difficult to reach by an operation, and is simple and convenient to use.

The invention discloses wound cleaning equipment for sea rescue, and relates to the technical field of medical auxiliary instruments, the wound cleaning equipment comprises an upper clamping seat, a lower clamping seat, a tubular part, a liquid medicine tank and two shifting blocks, the two shifting blocks are slidably connected to the upper clamping seat, and the shifting blocks freely rotate in the upper clamping seat in the axial direction of a clamping opening; the liquid spraying part is mounted on the tubular part and is in through connection with the tubular part; the poking unit is arranged on the upper clamping base and used for driving the two poking blocks to move in the direction away from each other. According to the device, when the lower clamping seat and the upper clamping seat rotate till the two clamping openings are combined to form a circular hole, a limb can be fixed and limited, the poking unit drives the two poking blocks to move in the direction away from each other, then the two poking blocks can generate traction force in two opposite directions on a deeper wound, the wound can be poked aside, and the wound is prevented from being damaged. Therefore, the interior of the wound can be exposed, the deeper part of the wound can be disinfected by a disinfectant conveniently, and single-person operation is facilitated.

The present invention discloses a starch-based medical adhesive and its preparation method and application, specifically relating to the field of biomedical materials technology. The method comprises first adding modified starch 1 to water, heating and stirring in an oil bath for gelatinization to obtain a modified starch 1 solution; adding modified starch 2 to water, heating and stirring in an oil bath for gelatinization to obtain a modified starch 2 solution; then mixing the modified starch 1 solution and the modified starch 2 solution, stirring evenly to obtain a modified starch complex; finally, freezing the modified starch complex at low temperature, freeze-drying it, and crushing the freeze-dried modified starch complex to obtain a starch-based medical adhesive. The medical adhesive of the present invention has good biocompatibility, can be degraded into non-toxic and harmless products in the body, has strong wet tissue adhesion strength and good tissue compliance, is simple to process, can be directly applied to skin wounds, deep wounds, and wounds in areas that are difficult to reach through surgery, and is simple and convenient to use.

The invention relates to the technical field of medical instruments, in particular to a multi-layer composite dressing with an interlayer continuous antibacterial network and a preparation method of the multi-layer composite dressing. The dressing comprises at least two polymer base material layers, and each polymer base material layer is provided with a through pore network; the surface of the framework of each polymer base material layer is coated with the metal antibacterial layer, so that a metalized framework is formed; the connecting structures are arranged between the adjacent polymer base material layers; the connecting structures are distributed in a discrete point shape between the adjacent polymer base material layers and are used for fixedly connecting the adjacent polymer base material layers; and the metallized frameworks of the adjacent polymer base material layers are in physical contact at the interlayer interface to form an electrical path of the interlayer metal antibacterial layer. According to the dressing disclosed by the invention, a three-dimensional continuous electrochemical antibacterial network in the full-thickness direction is constructed, and the industrial problems of internal biological membrane breeding and drainage blockage in deep wound nursing are effectively solved.

The utility model discloses a disposable fluorescent wound probe which comprises a disposable probe body, a folding assembly is arranged in the disposable probe body, and light-emitting assemblies are arranged on the annular side face of the disposable probe body and the annular side face of the folding assembly. By means of the arrangement, the use length of the disposable probe can be increased through the unfolded lengthened probe, so that the disposable probe and the lengthened probe can detect a deep wound, the compression spring can extrude the locking bead through the extrusion piece, the locking bead is clamped in the corresponding positioning hole, and therefore the lengthened probe unfolded in place is subjected to auxiliary positioning; the left side of the annular side face of the disposable probe is filled with the first luminescent powder so that the first luminescent powder can emit fluorescent light outwards through the first transparent blocking piece to irradiate surrounding wound tissue, and the second luminescent powder can emit fluorescent light outwards through the second transparent blocking piece to irradiate the surrounding wound tissue.

The invention relates to the technical field of clean vegetable detection pretreatment devices, in particular to a pretreatment device for clean vegetable detection. The treatment table is fixed to the inner side wall of the conveying roller through a plurality of connecting columns; the support frame is fixed on the side wall of the conveying roller; the convex block is arranged at the upper part of the treatment table; a plurality of moving frames slide on the side wall of the convex block along a circular array, connecting plates are arranged in the moving frames, and cutters are arranged at one ends of the connecting plates; the adjusting mechanism is connected with each moving frame and is used for adjusting the cutting angle of the cutter; a plurality of sliding holes are formed in the top wall of the convex block, a sliding hole is formed in the top wall of one end of each moving frame, and a sampling pipe is slidably connected to the inner side wall of each sliding hole. According to the invention, the damage type is visually identified, the angle and the cutting depth of the cutter are automatically adjusted, 'skin gouges' are shallowly cut, 'deep pricking 'is deeply cut, the cutting amount is minimized, and the waste of edible parts is reduced.

The invention discloses hemostasis freezing gel with a rapid shape memory function as well as a preparation method and application of the hemostasis freezing gel. The preparation method comprises the following steps: preparing an interpenetrating polymer network precursor solution by using an acrylamide monomer, a sodium alginate solution and a chemical cross-linking agent; polymerizing a frozen precursor solution to construct a first network; and carrying out ionic crosslinking on a metal salt solution with a certain concentration to construct a second network, and finally carrying out freeze drying treatment to obtain the double-network hemostatic frozen gel, namely the PAAM / Alg-Mn < + > hemostatic frozen gel. According to the double-network hemostasis freezing gel with the rapid shape memory function, the preparation method and the application of the double-network hemostasis freezing gel, a double-network structure is constructed at the low temperature, the mechanical property and the liquid absorption rate are synchronously improved, and the double-network hemostasis freezing gel has the ultrafast shape memory recovery capacity, the excellent mechanical property and the active blood coagulation function; the material is endowed with multiple functions of active blood coagulation, magnetic response and the like, and rapid and efficient hemostasis on non-compressible deep wounds can be realized.

The present invention discloses a formulation of curcumin basedpowder spray that includes 95% Curcuma longa 2-6 %w / w, isopropyl myristate 01-0.2 %w / w, Aluminum Starch Octynyl Succinate 3-7 %w / w, n-pentane 18.7-22.7 %w / w and propellant 68-72 %w / w. Also disclosed is a process for preparation of the formulation of curcumin based antiseptic powder spray. This powder spray of the present invention is applied by spraying the same from an aluminum can directly on to a wound site to provide antiseptic protection without physically touching the wound. The powder spray is enhanced with the healing properties of turmeric (Curcuma longa), forming a protective layer on the wound site, effectively treating deep wounds, cuts, and abrasions from infections.

The invention provides application of 68Ga-FAPI in preparation of related reagents for sternum deep wound infection, and belongs to the field of medicine. The invention provides application of 68Ga-FAPI in preparation of related reagents for early diagnosis, detection, tissue positioning, surgical debridement guidance and post-surgical debridement detection of deep sternum wound infection. By utilizing the FAP specific targeting effect of the 68Ga-FAPI, the accuracy of the 68Ga-FAPI in the aspects of diagnosis, detection and the like is superior to that of a traditional tracer agent, the high focus and background contrast ratio of the 68Ga-FAPI can accurately position infected tissues, and the 68Ga-FAPI has high conversion application value for guiding surgical debridement and postoperative monitoring.

The invention provides a polysaccharide-based hemostatic sponge material for rapid hemostasis of a deep wound cavity and a preparation method of the polysaccharide-based hemostatic sponge material. The problems that a hemostatic porous material prepared in the prior art is difficult to expand rapidly, poor in hydrophilicity, low in shape recovery rate, large in pores, uneven in pores, low in elastic modulus, poor in compression cycle performance and the like are solved. According to the preparation method, natural polysaccharide is adopted as a raw material, and the porous material which can absorb liquid and expand quickly, and is high in hydrophilicity, good in biocompatibility, high in shape recovery rate, small and uniform in pores, high in elasticity modulus and good in compression cycle performance is prepared through the aging salting-out method and the processes of alkalization, esterification, mixing, aging and forming.

The invention provides a polysaccharide-based hemostatic sponge material for rapid hemostasis of a deep wound cavity and a preparation method of the polysaccharide-based hemostatic sponge material. The problems that a hemostatic porous material prepared in the prior art is difficult to expand rapidly, poor in hydrophilicity, low in shape recovery rate, large in pores, uneven in pores, low in elastic modulus, poor in compression cycle performance and the like are solved. According to the preparation method, natural polysaccharide is adopted as a raw material, and the porous material which can absorb liquid and expand quickly, and is high in hydrophilicity, good in biocompatibility, high in shape recovery rate, small and uniform in pores, high in elasticity modulus and good in compression cycle performance is prepared through the aging salting-out method and the processes of alkalization, esterification, mixing, aging and forming.

The invention discloses a preparation method for a recombinant collagen hydrogel tissue adhesive for seamless wound healing. The invention uses recombinant collagen as the main component and utilizes the synergistic effects of various high-molecular polymers to achieve rapid formation of hydrogels with excellent adhesion, antibacterial properties, promotion of collagen deposition at wound sites, and controllable biodegradability. The prepared double-network hydrogel tissue adhesive can be injected into deep wounds, replacing sutures and staples in wound closure applications, with many practical applications.

The present application relates to the technical field of medical devices, in particular to a multi-layer composite dressing with interlayer continuous antibacterial network and a preparation method thereof. The dressing comprises at least two layers of polymer substrate layers, the polymer substrate layers having a through pore network; a metal antibacterial layer, the metal antibacterial layer being coated on the surface of the skeleton of each polymer substrate layer to form a metalized skeleton; and a connecting structure arranged between adjacent polymer substrate layers; the connecting structure is distributed in discrete point shape between adjacent polymer substrate layers to fix and connect adjacent polymer substrate layers; the metalized skeletons of adjacent polymer substrate layers form physical contact at the interlayer interface to constitute an electrical path of the interlayer metal antibacterial layer. The dressing of the present application constructs a three-dimensional continuous electrochemical antibacterial network in the full-thickness direction, effectively solving the industry problems of internal biofilm breeding and drainage blockage in deep wound care.

The invention relates to the technical field of war wound nursing, and discloses a war wound nursing flushing and disinfecting device which comprises a flushing and pumping switching mechanism, flow guide mechanisms are arranged at the two ends of the flushing and pumping switching mechanism, an external unit is installed at the output ends of the flow guide mechanisms, and the external unit comprises a flushing head mechanism and a pumping head mechanism. And an air pressure mechanism is mounted at the input end of the flow guide mechanism. According to the flushing and disinfecting device for war wound nursing, by arranging the flushing and pumping switching mechanism, the flow guide mechanism, the flushing head mechanism, the pumping head mechanism and the air pressure mechanism, output power of the air pressure mechanism can be regulated and controlled through the flushing and pumping switching mechanism, switching between a flushing mode and a pumping mode can be achieved, the flushing and cleaning capacity on a wound is guaranteed, and the flushing and disinfecting effect is improved. Deep wounds can be effectively cleaned by means of the negative pressure suction function, and the debridement adaptability to complex wounds is remarkably improved.

The invention relates to the field of biomedical polymer materials, in particular to light-cured xyloglucan hydrogel as well as a preparation method and application thereof. Methacrylic anhydride and xyloglucan react to obtain methallyl esterified xyloglucan, carbon-carbon double bonds are successfully modified on xyloglucan, so that the xyloglucan has photosensitivity, then free radical polymerization is initiated by ultraviolet light to form the photocured xyloglucan hydrogel, and the mechanical property and the stability of the xyloglucan hydrogel are improved. The photocuring xyloglucan pregel solution prepared by the method has good injectability, can be directly delivered to a target site, and is beneficial to filling irregular-shaped and deep wounds. The light-cured xyloglucan pre-gel solution prepared by the invention can generate light-cured xyloglucan hydrogel microspheres, and the porous microsphere structure imitating the extracellular matrix is suitable for drug loading, cell culture scaffolds and tissue engineering construction, so that the application scene of the xyloglucan hydrogel is effectively expanded.

The utility model relates to the technical field of medical instruments, in particular to an automatic retractor for intermusculars around an anus, which is mainly used for high anal fistula surgery or high intermuscular abscess surgery, and solves the problems that the operation is inconvenient and the exposed state of a wound surface is unstable when a deep wound surface is exposed by using an Eilius clamp or a drag hook in the prior art. The inner supporting rod extends into a gap between the inner sphincter and the outer sphincter and expands the inner sphincter towards the inner side, and the outer supporting rod expands the outer sphincter towards the outer side; the retractor is provided with a plate-shaped spring; the upper end of the inner supporting rod bends and extends towards the inner side and continues to bend and extend towards the side to form a first connecting section of the retractor, and the extending end of the first connecting section is fixedly connected with one end of a plate-shaped spring; the upper end of the outer supporting rod is bent and extends towards the outer side and is continuously bent and extends towards the side to form a second connecting section of the retractor, and the extending end of the second connecting section is fixedly connected with the other end of the plate-shaped spring; the supporting force of the retractor on the inner sphincter and the outer sphincter comes from the elastic force transmitted by the first connecting section and the second connecting section at the two ends of the plate-shaped spring.

The present application provides a kind of cervical cancer radical joint vagina lengthening operation restores vagina mould, solve the problem that existing technology cannot stably and continuously exert medicine or compression deeper wound in vagina to stop bleeding.The present application includes mould body, mould body is hollow cylindrical tube, cylindrical tube includes the support portion of top half-spherical, first through-hole is opened in support portion upper side;Push block is arranged in the cylindrical tube, push block top and semi-permeable membrane form a space, agar block is arranged in the space, second through-hole is opened in push block top, liquid capsule is arranged in push block, and the liquid capsule is connected to agar block by second through-hole;Push block limiting device is arranged on the inner side wall of cylindrical tube.After the technical scheme is used, the present application has the following advantages: the whole support is carried out using mould body, and then the agar block that can be pushed out is accurately positioned to wound, and continuous drug application is carried out to wound.Even if wound bleeds, it can also achieve pressing hemostasis, and accelerate recovery speed.

The wound medicine applying device comprises a first mounting plate assembly, a second mounting plate assembly, a radial driving mechanism, a piston type medicine cabin, a rotary driving mechanism and a dose regulating and controlling mechanism, and a tail end execution unit comprises a plurality of flexible medicine applying guide pipes which are distributed on the second mounting plate assembly in a circumferential array mode; each catheter is provided with an expandable tube wall with a microporous structure; the radial driving mechanism is used for simultaneously driving all the flexible drug delivery catheters to synchronously and radially displace; the piston type medicine cabin comprises a first chamber and a second chamber which are independent, are respectively used for storing ointment and cleaning liquid, and are communicated with each flexible medicine feeding catheter through a pipeline; the rotation driving mechanism is used for driving the second mounting plate assembly to rotate; the dosage regulation and control mechanism is integrated in the liquid medicine storage and distribution system and used for controlling release of medicine in the first cavity and the second cavity. By means of the wound medicine applying device, effective medicine applying on a deep wound can be achieved, the medicine applying efficiency is improved, and meanwhile the risks of infection and secondary injury can be reduced.

The present invention relates to the field of medical device technology, and in particular to an emergency hemostasis device for wounds, comprising a hemostasis component and a pushing component; the hemostasis component is used to be sleeved on at least part of the outer wall surface of the pushing component, and the pushing component is used to deliver the hemostasis component into the wound. The emergency hemostasis device for wounds provided by the present invention can quickly and effectively stop bleeding for some deeper wounds. The present invention also provides a method for using the emergency hemostasis device for wounds.

The present application relates to the technical field of medical apparatus, in particular to a kind of wound cleaning device and cleaning device.Wound cleaning device, including: cleaning head and body;The cleaning head includes shower head and soap box, the shower head is provided with water spray hole and accommodating cavity, the soap box is installed in the accommodating cavity of the shower head, the soap box is provided with brush and is used for the accommodating cavity of soap interlocking;The body includes shell, the shell is provided with driving mechanism and water delivery pipe in, the output shaft of the driving mechanism is connected with the cleaning head, and can drive the cleaning head to reciprocating circumferential swing, the water delivery pipe is communicated with the cleaning head by flexible water pipe.It is not necessary to use person to hold soap to flush in the present application, under the driving of driving mechanism, make soap and brush reciprocating circumferential swing, more conform to the shape of wound, can completely clean the rabies virus in deep wound, achieve no dead angle, effectively reduce the incidence of rabies virus infection.

The invention relates to the technical field of biological materials, in particular to a carboxymethyl cellulose gelatin composite multifunctional hemostatic sponge and a preparation method thereof.The carboxymethyl cellulose gelatin composite multifunctional hemostatic sponge comprises a carboxymethyl cellulose / gelatin sponge base material and a combined antibacterial agent, and the antibacterial agent is polylysine; the preparation method comprises the following steps: chemically crosslinking carboxymethyl cellulose and gelatin to prepare a carboxymethyl cellulose / gelatin sponge base material, immersing the carboxymethyl cellulose / gelatin sponge base material into an antibacterial agent solution, and freeze-drying to obtain the antibacterial sponge. The antibacterial agent is combined, so that the antibacterial and bacteriostatic effects are remarkably improved, the broad-spectrum antibacterial effect is achieved, and the infection risk of a wound is reduced; through cross-linking of carboxymethyl cellulose and gelatin, the mechanical stability of the composite sponge is improved, and the composite sponge has good elasticity, shape memory performance and biocompatibility and has a good effect on filling and hemostasis of irregular and narrow deep wounds.

The invention discloses an antibacterial hollow mesoporous silica ball injectable hydrogel dressing and a preparation method thereof, and belongs to the technical field of hydrogel dressing preparation. The antibacterial hollow meso-porous silicon ball injectable hydrogel dressing provided by the invention is obtained by taking four-arm polyethylene glycol of which the end group is modified by o-phthalaldehyde as a cross-linking agent and automatically cross-linking the four-arm polyethylene glycol with a hollow meso-porous silicon ball entrapped with tannic acid in a solvent. Compared with the prior art, the antibacterial hollow meso-porous silicon sphere injectable hydrogel dressing provided by the invention can be gelatinized without participation of catalase, and the obtained antibacterial hollow meso-porous silicon sphere injectable hydrogel dressing has better gelatinizing time, cannot be gelatinized too slowly or too quickly, can be subjected to injection in-situ molding, and can be used for preparing the antibacterial hollow meso-porous silicon sphere injectable hydrogel dressing. The hydrogel can be used for treating deep wounds (existing hydrogel is too fast or too slow in gelling and can only be directly made into gel for use and used for superficial wounds); the mechanical strength of the gel can be improved; and the hydrogel also has good biocompatibility, degradability and antibacterial property, and good repair promotion capability.

The invention relates to the field of composite hemostatic materials, and discloses a PVA-polyphenol derivative and chitosan composite hemostatic material and a preparation method thereof.The PVA-polyphenol derivative and chitosan composite hemostatic material is prepared from PVA and 3, 5-dihydroxybenzoic acid (DHBA) through esterification reaction, a PVA-DHBA grafted copolymer serving as a wet adhesion component, chitosan serving as a chemical coagulation accelerating component and a chitosan-polyphenol derivative-chitosan composite hemostatic material. A powdery product is prepared by compounding and blending, freeze-drying, crushing and sieving and irradiation sterilization, and the material performance is accurately regulated and controlled by regulating and controlling the mass ratio of PVA to DHBA, the compounding ratio, freeze-drying parameters and the particle size of powder in the preparation process. The material has dual hemostasis mechanisms of mussel bionic wet bonding, physical plugging and chemical coagulation promotion, the bonding strength with a bone tissue interface reaches 1MPa, the whole blood coagulation time is only 60s, the material is remarkably superior to an existing chitosan-based material and a commercial product Rhino Rescue, and the material is good in biocompatibility, degradable, capable of being adapted to irregular and deep wounds and capable of being used as a medical material for treating the wounds. The hemostat is suitable for rapid hemostasis in trauma first-aid, surgical operations and other scenes.

This invention relates to the field of medical device technology, specifically to a closed irrigation and drainage device for treating deep wound infections. The device includes a drainage tube, an inlet tube, an outlet tube, a front T-joint, a rear T-joint, a sealing cap, a guide wire, and a flow regulator. The drainage tube has several drainage holes for fluid exchange. The guide wire is sleeved inside the drainage tube. The front and rear T-joints are located at opposite ends of the drainage tube, with the guide wire extending from the outer openings of the front and rear T-joints respectively. The sealing caps seal the outer openings of the front and rear T-joints. The inlet tube is connected to the inner opening of the front T-joint, allowing cleaning fluid to be injected into its other end. The outlet tube is connected to the inner opening of the rear T-joint, discharging drainage fluid from its other end. The flow regulator is installed at the distal end of the inlet tube. By incorporating a guide wire with a ring structure within the drainage tube, convenient and repeated unblocking of the pipe is achieved, effectively solving the problem of pipe blockage.

The present application relates to the medical biomaterial and the wound repair technical field, especially collagen dressing and its preparation method, the preparation method includes the following steps: with suspending agent to scolopendra powder is wrapped, obtains A component;Collagen solution and wetting agent are mixed, and B component is obtained;A component and B component are defoamed, mixed, and C component is obtained;The C component is freeze-dried, and collagen sponge is obtained;The collagen sponge is crosslinked at 90~120 DEG C temperature, and collagen dressing is obtained.The present application is through introducing scolopendra powder to give the function of antibacterial, anti-inflammatory, analgesic, anticorrosive, strong healing of dressing;At the same time, through preparation process to improve the physical properties of dressing, strengthen its dressing structure stability and the hydrophilicity and uniformity of scolopendra component, reduce the clinical use safety risk, make it suitable for all kinds of wound, especially infected wound, deep wound and difficult healing wound, meet the clinical treatment demand.