51 results about "Wound edge" patented technology

The invention relates to the technical field of virtual reality, in particular to a thyroid cancer postoperative intelligent follow-up management system, which comprises a wound feature construction module for acquiring a thyroid cancer postoperative patient wound image, extracting a wound edge contour coordinate point set, calculating a wound region area and acquiring a wound morphological parameter set; based on the wound morphological parameter set, the healing progress percentage is analyzed, and a wound dynamic evaluation matrix is established. According to the method, intelligent upgrading of postoperative rehabilitation management is achieved by collecting wound characteristics, calculating the healing progress, matching the nursing track, synchronizing the virtual reality environment, optimizing follow-up scheduling and establishing remote interaction. High-precision dynamic healing evaluation is provided for extraction of the edge contour of the wound and calculation of morphological parameters, and errors caused by judgment depending on experience are avoided. Nursing actions are combined with space coordinate conversion and real-time trajectory optimization, it is ensured that rehabilitation training of the patient has a standardized execution mode, and the situation that the recovery progress is affected by random operation is avoided.

The invention relates to the technical field of skin dilators, and discloses an external skin dilator which comprises a main body assembly, an external skin dilator body and an external skin dilator body. The adjusting assembly is located on the bonding plate and comprises a fixing piece, the fixing piece comprises a first fixing block, a second fixing block and a third fixing block, and the first fixing block is fixed to the bonding plate. The dilator has the advantages that the dilator integrates the preoperative skin dilation function and the postoperative tension reduction function, the preoperative dilation function can continuously generate outward tension on the skin around a pre-operation, the slack area of the skin around the pre-operation is relatively enlarged, meanwhile, the tension reduction function can be achieved after the operation, the tension of the edge of a wound is reduced, and the wound healing effect is improved. The dilator is simple in structure and convenient to use, wound healing is facilitated, tension can be adjusted, the tension borne by skin is always within a safe and reasonable range, the dilator cannot shield an operation site in an operation, and it is guaranteed that a doctor can clearly observe and operate the operation area.

The invention provides a programmable hydrogel wound dressing with rotation contraction force and application thereof, and belongs to the technical field of biomedical materials, the programmable hydrogel wound dressing comprises a dual-network hydrogel main body, a first hydrogel layer, a second hydrogel layer, a first hydrogel layer and a second hydrogel layer, and the dual-network hydrogel main body is composed of a first network and a second network; the first network is a chemically cross-linked methacrylated hyaluronic acid network and forms a cross-linked network structure through photopolymerization; the second network is a physical cross-linked polyvinyl alcohol network, and forms an instantaneous cross-linking point with a crystal region through a hydrogen bond, so that the hydrogel is endowed with shape memory performance; the surface is modified with an N-hydroxysuccinimide ester functional group, and the N-hydroxysuccinimide ester functional group and amino of wound tissue protein can form a covalent bond; the dual-network hydrogel main body is subjected to pre-stretching or pre-twisting treatment and then is dried and shaped into a preset shape, the initial shape is recovered after moisture is absorbed, and rotary contraction mechanical force is output. Rapid wound healing and scar-free regeneration are achieved by dynamically regulating and controlling wound edge mechanical force and enhancing tissue adhesion, and then application to regulation and control of wound microenvironment to promote scar-free healing is achieved.

The invention relates to the technical field of intelligent medical treatment, and discloses an image-based intelligent wound management method and system, and the method comprises the steps that after an operation is completed, a doctor or a nurse uses a shooting device to shoot an image of an operation wound, and the image is preprocessed; automatically identifying a wound area by using a deep learning algorithm, and automatically marking the edge of the wound; based on the image data and a deep learning model, evaluating the healing progress of the wound, and generating a healing progress report; through image analysis and subjective data uploaded by a patient, the system intelligently detects whether a wound has an infection sign or other abnormal conditions; a patient regularly uploads wound images and provides subjective feeling data, and doctors and nurses monitor the healing condition of the wound in real time; after the patient is discharged from the hospital, the patient continues to photograph or record and upload wound images through the mobile device, and the system automatically provides home nursing suggestions and reminds the patient to pay attention to daily nursing. The method has the advantage of improving the wound treatment effect.

The invention provides a skin retractor for an arc-shaped limb part, and relates to the technical field of medical instruments. The device mainly comprises a bent threaded rod, nuts assembled at the two ends of the bent threaded rod, a fixing hook slidably arranged on the rod in a sleeving mode, and a propelling mechanism composed of a first sleeve, a spring and a second sleeve. The fixing hook is designed in a split mode, an adjusting plate and a base are connected through bolts and nuts, and the height can be flexibly adjusted. A through hole is formed in the bottom of the base and used for allowing a kirschner wire to penetrate and be fixed. The propelling mechanism is driven by screwing the nut to move along the bent threaded rod, traction force is transmitted and quantified through the spring, and finally progressive traction on wound edge skin is achieved through the fixing hook. The device can perfectly fit an arc-shaped limb part, effectively solves the problems of poor fit, overlarge end point gap, inconvenience in height adjustment and the like of the existing straight rod retractor, and has the advantages of controllable traction force, high adaptability and simplicity and convenience in operation.

The invention relates to an integrated dressing change device for pulling out a closed drainage tube, and aims to solve the problems of low breathing matching degree of a patient, poor wound closing effect and the like in the traditional tube pulling operation. The device comprises a dressing change bag, a pair of sterile scissors, tweezers, gauze, a gauze ball, a mouth-nose closed breathing auxiliary mask, elastic tension adhesive tape dressing and a medical garbage bag. The breathing assisting mask forces the patient to hold breath through the air bag and the pressing device, subjective cooperation of the patient is not needed, the tube drawing success rate is remarkably increased, and the breathing assisting mask is particularly suitable for children, old people and other patients with low adaptability. The elastic tension adhesive tape dressing adopts a sterile dressing, an elastic cloth, a non-woven fabric and an adhesive layer structure, and can provide 5-10N transverse tension after being stretched, so that the folding of the edges of the wound is promoted, the seepage is reduced, and the dressing change period is prolonged. By means of the integrated design, the preoperative preparation time is shortened, the operation standardization level is improved, the medical cost is reduced, and the medical efficiency and quality are improved.

The present application relates to the technical field of medical image analysis, in particular to a burn area automatic evaluation method based on AI image recognition, comprising the following steps: analyzing image gradient sequence, screening for inflection points and encoding texture order, analyzing brightness difference to obtain attenuation trend to generate degradation structure, comparing tension mutation and convergence direction, screening for bridging points, identifying color difference density inversion to construct boundary point set, analyzing curvature difference to perform area expansion correction, in the present application, the texture order identifier is constructed by analyzing the pixel gradient sequence in the original image, the regional damage intensity judgment mechanism is established by combining the brightness change and the thermal damage signal difference, the wound edge point structure is derived by the tension direction trend, the continuous boundary range is identified by combining the color difference density, the area expansion comparison and correction are carried out by fusing the curvature difference, the systematic evaluation logic from boundary recognition to area mapping is established, the damage range is accurately delimited and the body surface characteristics are matched, and the precision evaluation and regional expansion of the burn area are realized.

The utility model relates to the technical field of medical apparatus and instruments, and discloses a flat nylon rope for purse-string suture under an endoscope, which comprises a flat annular nylon rope body, the length of the flat annular nylon rope body is matched with the edge of a wound surface, and the flat annular nylon rope body is made of a high-strength and high-flexibility medical nylon material; the elastic fixing buckle is detachably connected with the flat annular nylon rope body and is used for fixing after the nylon rope is tightened; according to the flat cross section design, when the tissue clamp is used for clamping, the tissue clamp can be kept in the direction perpendicular to the wound surface, and therefore the suturing stability and uniformity are improved. The stability and success rate of purse-string suture under the endoscope are improved, the operation difficulty is lowered, the operation time is shortened, meanwhile, the suture sealing performance is enhanced, and the risk of postoperative complications is reduced.

The application provides a programmable hydrogel wound dressing with rotary contractive force and application thereof, and belongs to the technical field of biomedical materials, and comprises: a double-network hydrogel main body composed of a first network and a second network; the first network is a chemically cross-linked methacrylated hyaluronic acid network, and the cross-linked network structure is formed through photo polymerization; the second network is a physically cross-linked polyvinyl alcohol network, and the instantaneous cross-linking points are formed through hydrogen bonds and crystal regions, and the hydrogel is endowed with shape memory performance; the surface is modified with N-hydroxysuccinimide ester functional groups, which can form covalent bonds with the amino groups of tissue proteins on a wound surface; the double-network hydrogel main body is dried and shaped into a preset shape after being pre-stretched or pre-twisted, restores the initial shape after absorbing moisture, and outputs a rotary contractive mechanical force. The application realizes rapid wound healing and scar-free regeneration by dynamically regulating the mechanical force at the wound edge and enhancing tissue adhesion, and further realizes the application in regulating the wound microenvironment to promote scar-free healing.

The application provides a negative pressure drainage dressing combined material and a use method thereof, and belongs to the technical field of medical wound repair materials.The negative pressure drainage dressing combined material is based on the fitting logic of "a ring-shaped guide layer film directly contacts a wound edge, a foam dressing contacts a central wound through a central empty area of the ring-shaped guide layer film, and an isolation layer is consistent in size with the ring-shaped guide layer", solves the short board of "only drainage and unable to protect epidermal migration growth" of the prior art through component structure optimization, parameter design and synergistic cooperation, fully utilizes a negative pressure environment to promote epidermal growth, guides epidermal growth by means of a film structure, and beautifies new skin by simulating epidermal texture, and changes the negative pressure drainage dressing from a simple sealed drainage device to a functional device capable of promoting wound epidermal healing.

The invention relates to the technical field of oral medical monitoring, in particular to an oral postoperative bleeding risk prediction and intervention system based on multi-modal data fusion, and the system comprises the steps: collecting preoperative blood coagulation function detection data, intraoperative wound image data and postoperative continuous physiological sign monitoring data of a patient, and carrying out the standardization processing; extracting three types of parameters, namely a blood vessel exposure area ratio, tissue errhysis point distribution density and a wound edge contraction state, of the intraoperative wound image; carrying out association mapping on the three types of parameters and preoperative blood coagulation function data, and constructing a bleeding risk feature vector; training a bleeding risk classifier by using the vector to obtain a risk prediction model; inputting postoperative real-time physiological sign data into the model, obtaining a bleeding risk probability value and triggering corresponding intervention measures. The system can accurately capture the real-time state of the wound surface, integrates multi-dimensional data, improves the bleeding risk prediction accuracy, triggers intervention in time, and reduces postoperative bleeding complications.

A method of healing a wound including contacting a wound edge with a tropoelastin or elastin derived peptide in conditions for enabling a sustained contact of the tropoelastin with the wound edge for a time period for enabling re-epithelialization of the wound.

This invention relates to the field of oral medical monitoring technology, specifically a postoperative oral bleeding risk prediction and intervention system based on multimodal data fusion. The system includes: collecting and standardizing preoperative coagulation function test data, intraoperative wound image data, and postoperative continuous physiological sign monitoring data; extracting three parameters from the intraoperative wound image: the proportion of exposed blood vessels, the density of tissue bleeding points, and the state of wound edge contraction; mapping these three parameters to the preoperative coagulation function data to construct a bleeding risk feature vector; training a bleeding risk classifier using this vector to obtain a risk prediction model; and inputting real-time postoperative physiological sign data into the model to obtain a bleeding risk probability value and trigger corresponding intervention measures. This system can accurately capture the real-time state of the wound, integrate multi-dimensional data, improve the accuracy of bleeding risk prediction, trigger timely intervention, and reduce postoperative bleeding complications.

The invention discloses a medical wound hemostasis compression device, and relates to the technical field of medical instruments. The multiple wound hemostasis plates are arranged, compression mechanisms are installed on the inner sides, close to a wound, of the multiple wound hemostasis plates, and first positioning mechanisms are installed on the sides, away from the outer wall of the wound, of the multiple wound hemostasis plates in an embedded mode; through cooperative work of the wound hemostasis plate, the first mounting groove, the first magnetic strip, the first mounting frame, the first magnetic block and other parts, a detachable L-shaped clamping structure is formed by the first mounting groove and the first mounting frame, and the magnetic strip and the magnetic block with opposite magnetic poles are matched for automatic adsorption, so that the adjacent hemostasis plates are quickly positioned and tightly connected; by means of the modular design, the hemostasis plates can be flexibly spliced into a combination body matched with the shape of a wound, the problem that a traditional compression device with a fixed shape is difficult to be attached to the edges of irregular wounds such as burns and postoperative wounds is solved, and secondary injuries caused by insufficient or excessive local compression are avoided.

The invention discloses a novel application with a cold compress hemostasis function for hemodialysis, and relates to the technical field of medical supplies. The plaster comprises a plaster body, a first opening is formed in the plaster body, internal threads are formed in the upper side of the plaster body and located in the first opening and the inner wall of a mounting head, and bandages used for binding are arranged on the two sides of the plaster body; the hydrocolloid dressing layer is attached to the lower side of the application body. The hydrocolloid dressing layer can be directly and firmly adhered to the skin at the edge of a wound and can absorb seepage, the pressing cylinder is arranged and moves downwards by rotating the pressing cylinder so as to slowly press and stop bleeding of the wound, and the cold insulation ring is arranged so that local blood vessels around the wound can be conveniently constricted. And the traditional Chinese medicine preparation can be immediately used after dialysis, so that the wound can be scientifically nursed, and the pain of a patient can be relieved.

The present invention provides an intelligent kidney wound segmentation system, which relates to the technical field of image data processing. The intelligent kidney wound segmentation system includes: an image enhancement module; an edge blur index acquisition module; a wound rule index acquisition module; and a wound segmentation index acquisition module. By combining the obtained edge data of the kidney image and the preset reference image edge data, the present invention obtains the edge blur index. Then, according to the obtained kidney wound rule data and the preset reference wound rule data, the wound rule index is obtained. Finally, by combining the obtained wound segmentation data and the preset reference segmentation data, the wound segmentation index is obtained, achieving the effect of improving the accuracy of kidney wound segmentation and solving the problem of low correlation between kidney wound segmentation and wound edges in the prior art.

Embodiments of the present invention provide a wound therapy device for delivering controlled therapeutic stimulation to a wound. The device includes a first adhesive strip and a second adhesive strip configured to be placed on opposite sides of the wound, each strip having a therapeutic tube extending along the wound edge. The therapeutic tube houses at least one stimulation element and may include a medicinal fluid channel. A fastening member adjusts a gap between the adhesive strips to approximate wound edges. A detachable controller is connectable to the stimulation elements and is configured to deliver one or more therapies, including phototherapy, microcurrent, heating, cooling, vibration, ultrasound, or medicinal fluid delivery. The detachable controller is reusable with multiple disposable adhesive strips, enabling cost-effective and multimodal wound treatment.

The invention relates to the field of diabetic foot ulcer, and discloses a diabetic foot ulcer wound edge skin-derived extracellular vesicle as well as a preparation method and application thereof. The preparation method comprises the following steps: pretreating diabetic foot ulcer wound edge skin tissues to obtain tissue fragments; the method comprises the following steps: mixing type IV collagenase and DNaseI enzyme in a DMEM (Dulbecco Modified Eagle Medium) high-glucose culture medium to prepare a tissue dissociation solution; carrying out primary dissociation by using pancreatin digestive juice, and then carrying out secondary dissociation by using tissue dissociation liquid; sequentially and alternately carrying out gradient size filtration and differential centrifugation on the filtrate, and collecting supernate; performing ultra-high-speed centrifugation, ultra-filtration and gradient needle type filtration on the supernate; and performing ultra-high-speed centrifugation again to obtain the diabetic foot ulcer wound edge skin-derived extracellular vesicles. The concentration of the obtained EVs is 3.29 mg / mL, and the characteristics of delayed healing and insufficient collagen deposition can be stably obtained by injecting the EVs into normal mice.

The application discloses application of Neuritin in preparation of a medicine for promoting healing of a diabetic wound. The application proves for the first time through experiments that Neuritin expression in wound edge tissue and surrounding sensory neurons is significantly up-regulated after skin damage, and Neuritin expression is significantly down-regulated under a diabetic condition. By constructing a nervous system conditional knock-out and a sensory neuron specific knock-out Neuritin mouse, it is proved that wound healing is significantly delayed after Neuritin is knocked out. By means of spinal cord site injection of an AAV virus to overexpress Neuritin in a DRG and skin electroporation technology to locally overexpress Neuritin in the skin, it is proved that overexpression of Neuritin can significantly promote wound healing of type 1 and type 2 diabetic mice. The application provides a brand-new target and strategy for treatment of a diabetic refractory wound, and has a good clinical transformation prospect.

The invention discloses a wound parameter measurement method and system combined with three-dimensional imaging, and relates to the technical field of parameter measurement, and the method comprises the steps: firstly fusing a two-dimensional color image and depth data, constructing a high-precision three-dimensional color point cloud model of a scene, and carrying out the semantic segmentation of the model through color and space information, therefore, healthy skin inside and around the wound and key edge contours can be accurately identified. On the basis, a global trend reference plane capable of representing the inherent curvature of the human body surface is constructed. And then, local refined reconstruction is performed on the global reference surface in combination with wound edge contour information, and a high-fidelity virtual healthy skin surface is generated. And finally, accurately resolving key parameters such as the maximum depth and the volume of the wound by comparing the internal point cloud of the wound with the refined reference surface. Therefore, the problem of inaccurate reference surface fitting under a complex curved surface background can be fundamentally solved, so that the accuracy and reliability of three-dimensional wound measurement are remarkably improved.

Disclosed herein is a patient interface for wound treatment and / or management, comprising: an interface body configurable to substantially or at least partially surround a wound, the interface body comprising a gas inlet and defining a first gas flow path having a first flow resistance, and a second gas flow path having a second flow resistance. The first gas flow path is arranged in fluid communication with the gas inlet and the second gas flow path. The interface body comprises or is configurable to provide a gas outlet at or adjacent to the wound site.

The application discloses an anti-scar dressing for shielding wound tension, which comprises the following components in parts by weight: 2-5 parts of sodium carboxymethyl cellulose, 2-5 parts of modified hydroxypropyl methyl cellulose, 20-50 parts of acrylic acid and 0.5-5 parts of ammonium persulfate; the above raw materials are dissolved and uniformly mixed by using a mixed solvent of sodium hydroxide aqueous solution and dimethyl sulfoxide to prepare a hydrogel dressing which can shrink in response to body temperature and adhere to skin. The hydrogel dressing patch has skin tissue adhesion, can be firmly adhered to the surface of skin and will not leave residues or damage the integrity of skin when separated from the skin; the hydrogel dressing has body temperature response and shrinkage, and still has skin adhesion during shrinkage; the hydrogel dressing shrinks in response to body temperature and adheres to the edges of a wound to gather the wound edges to the central area of a wound bed, thereby reducing stress concentration around the wound edges and balancing the wound tension.

The invention relates to a deformation visual monitoring method and system in the pressurization process of a wound rewarming cabin. The method comprises the following steps: acquiring baseline imaging data of a wound margin safety area according to an optical geometrical relationship between a pose calibration camera and a transparent airbag; controlling the wound rewarming cabin to perform testability pressurization on the wound, and calculating a surface displacement strain time sequence field of the wound according to the continuous imaging data of the wound margin safety area; according to the surface displacement strain time sequence field, the wound rewarming cabin is controlled to conduct stepped upward pressing on the wound, and wound tissue compliance data are obtained; according to the wound tissue compliance data, the wound rewarming cabin is controlled to conduct pressure-temperature coupling circulation on the wound, and wound tissue maintainability data is obtained; according to the wound tissue maintainability data, performing pressure-temperature coupling perturbation correction on the wound to obtain wound tissue stability data; the method is used for generating deformation visualization data of the wound rewarming cabin. By adopting the method, the treatment success rate of the wounded in the cold region can be effectively improved.

The utility model provides a hydrocolloid catheter fixing patch which comprises a hydrocolloid dressing, the hydrocolloid dressing comprises a surrounding edge part and a fixing part, the surrounding edge part is arranged around the fixing part, the thickness of the fixing part is larger than that of the surrounding edge part, a fixing groove used for fixing a catheter is formed in the top of the fixing part, and the fixing part is provided with a fixing groove used for fixing the catheter. One side of the fixing groove is provided with an opening for a guide pipe to pass through, and the bottom of the fixing groove is provided with a through hole for the guide pipe to pass through. Compared with the prior art, the hydrocolloid catheter fixing patch can be firmly adhered to the skin at the edge of a wound through the hydrocolloid dressing, so that a closed healing environment is provided, the catheter can enter the healing environment through the through hole in the hydrocolloid dressing, percolate is sucked out, negative pressure is provided for the healing environment, and the healing effect is improved. The hydrocolloid dressing is integrally formed, production is convenient, the structure is simple, and the catheter can be stably fixed.

Disclosed is a two-component medical device useful for closing a wound or incision. The two-component medical device includes first and second adhesive-backed anchoring members having wound edges. A first and a second release liner protect the first adhesive-backed surface of the first adhesive-backed anchoring member. A first and a second release liner also protects the second adhesive-backed anchoring member. Each of the first and second release liners include a tab portion for removal of the associated first or second release liner.

The present invention discloses a tendon suturing auxiliary device, which belongs to the field of medical devices and includes: a surrounding structure, which is provided with a fitting channel, the patient's arm is fitted into the fitting channel, the surrounding structure has relative execution ends, and the execution ends form an operation area, and the operation area exposes the wound on the patient's skin surface; a traction structure, which includes a traction member and a clamping member, the ends of the traction member are respectively connected to the clamping member and the surrounding structure, and the clamping member always has a tendency to move to an initial position under the drive of the traction member; a positioning structure, which includes a positioning needle and a reset member, the surrounding structure has a positioning channel, and the positioning needle always has a tendency to move to a penetration position under the drive of the reset member, and when the positioning needle moves to the penetration position, it contacts the execution ends on both sides. Through the above-mentioned settings, the present invention can solve the problem of the risk of puncture when using a syringe needle to puncture the tendon, and the problem of unstable traction effect of hemostatic forceps clamping the wound edge.

The utility model relates to the technical field of rim charge rolling, and provides a splitting machine rim charge rolling device which comprises a machine shell, a roll material driving piece is arranged in the machine shell, a detachable shaft core roll assembly is arranged on the roll material driving piece, the shaft core roll assembly comprises a main shaft, a side plate, a sleeve gasket and a limiting piece, the main shaft is installed on the roll material driving piece, and the side plate is installed on the side plate. The sleeve gasket comprises a large sleeve gasket and a small sleeve gasket, the large sleeve gasket and the small sleeve gasket are both installed on the main shaft, a plurality of sets of limiting pieces are installed on the large sleeve gasket and the small sleeve gasket, and the side plates are installed on the main shaft and located at the two ends of the large sleeve gasket and the two ends of the small sleeve gasket respectively; when rolled offcut needs to be taken down, a user only needs to take down the side plate on one side of the small sleeve gasket and the locking sleeve, the user can conveniently take the offcut through the inclined limiting groove, the sliding sleeve can slide along with drawing of the offcut while the offcut is drawn out, friction force is reduced, and the offcut can be drawn out more conveniently.

This invention discloses a device for repairing large spinal cord wounds, relating to the field of surgical instruments. The device includes a retractor, multiple slide rails, a support member, and a spiral elastic suture. The slide rails are fixedly positioned outside the retractor within the incision. The end of the support member is optionally positioned within the slide rails. The spiral elastic suture is placed above the support member, and its end has a connecting end that passes through the support member and connects to a needle. This device integrates multiple functions, including incision retraction, suture support, and elastic traction alignment, overcoming the limitations of single instruments and eliminating the need for additional auxiliary instruments. The support member can be selectively mounted within the slide rails with adjustable spacing, adapting to the suturing needs of different locations within the spinal cord wound. The elastic recovery characteristics of the spiral elastic suture enable automatic traction alignment of the wound edges, effectively improving suture tightness and reducing the risk of postoperative complications.

The invention discloses a V-shaped skin distractor, and relates to the technical field of medical instruments. The distraction device mainly comprises at least two V-shaped distraction devices and an adjusting rod. The V-shaped distraction device is formed by connecting a distraction arm I and a distraction arm II through a unique hinge structure, namely, a sleeve at one end of the distraction arm I and two connecting rings at one end of the distraction arm II are nested with each other and are penetrated by a rotating shaft. The bottom ends of the distraction arm I and the distraction arm II are provided with fixing structures (a U-shaped bayonet and a fastener) used for fixing an external axial puncture traction needle, and the body parts of the distraction arm I and the distraction arm II are provided with through holes. The adjusting rod penetrates through the through holes, synchronous opening and closing of the distraction arm I and the distraction arm II of the V-shaped distraction device can be accurately controlled by rotating the T-shaped rotary knob at one end of the adjusting rod, and therefore continuous, stable and uniform distraction of the wound edge skin is achieved. The device is ingenious in structural design, easy and convenient to operate, controllable in traction force and uniform in distribution, effectively solves the problems that in the prior art, installation is complex, adjustment is inconvenient, the comfort degree of a patient is poor, and medicine changing is difficult, and is suitable for repairing large-area skin and soft tissue defects.