18 results about "Deep wounds" patented technology

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 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 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 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 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 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 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 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 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 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 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.

The invention relates to a multi-channel electronic suture line for monitoring wound space inflammation changes in real time, provides a multi-channel electronic suture line for visualized management of wound inflammation, and belongs to the technical field of biology. Comprising a reference electrode wire and a plurality of polyaniline working electrode wires, the reference electrode wire and the working electrode wires respectively take a conductive fiber bundle as a substrate, and an Ag / AgCl reference electrode sensing unit is arranged on the substrate of the reference electrode wire; a polyaniline working electrode sensing unit is arranged on a substrate of each working electrode wire, protective layers are arranged at the positions of non-sensing units of the reference electrode wires and the working electrode wires, the reference electrode wires and the working electrode wires are arranged in a staggered mode according to the sensing units, and the multi-channel electronic suture line is formed after the non-sensing units are packaged in a unified mode. The pH values of the wound at different spatial positions can be accurately monitored in real time to reflect the inflammation change of the deep wound.

The invention is suitable for the technical field of wound nursing instruments, and provides a surgical wound hemostasis nursing device which comprises a bearing seat, a lower cavity shell is fixedly connected to the upper end of the bearing seat, an upper cavity shell is fixedly connected to the lower cavity shell, a locking assembly is arranged at the inner bottom end of the lower cavity shell, and a filter membrane is arranged on the locking assembly in a matched mode. A negative pressure assembly is arranged in the upper cavity shell in a matched mode, the lower end of the negative pressure assembly is fixedly connected with a liquid inlet pipe, the upper end of the negative pressure assembly penetrates through the top end of the upper cavity shell and is fixedly connected with a discharging pipe, a containing groove is formed in the top end of the upper cavity shell, a rotating column is rotationally connected into the containing groove, and the inner wall of the rotating column is in threaded connection with the negative pressure assembly. A first limiting groove is formed in the upper cavity shell, a first limiting block is slidably connected into the first limiting groove, and the first limiting block is fixedly connected with the negative pressure assembly. The device has the advantages that the replacement frequency is reduced, deep wound effusion is effectively discharged, and the device adapts to wounds of different degrees and patient moving scenes.