131 results about "Wound area" patented technology

The invention discloses an anorectal postoperative rehabilitation intelligent supervision method and system based on multiple modes, and belongs to the technical field of intelligent supervision. A temperature, humidity, air quality and other multi-mode sensor group is arranged in each anorectal postoperative rehabilitation management inpatient area, the body temperature, heart rate and wound surface images of a patient are synchronously collected, and the wound surface area and seepage color are extracted through image processing; the method comprises the following steps: by taking a time node as a unit, adding a time label to an environment and patient basic data set, constructing a multi-modal comprehensive data set in a unified format, calculating an environment comprehensive index and a physiological comprehensive index, fusing the environment comprehensive index and the physiological comprehensive index to calculate a postoperative rehabilitation risk value, setting a threshold interval to generate low, medium and high three-level risk labels, and the patient risk label set is pushed to the doctor end in real time, a dynamic supervision system is constructed, the anomaly recognition rate and the clinical response speed are improved, the complication occurrence rate is reduced, the rehabilitation period is shortened, and reliable data support is provided for nursing quality improvement and evidence-based medical research.

The invention relates to an OCT (Optical Coherence Tomography) navigation uterine cavity adhesion and dissection postoperative residual adhesion prediction method, which comprises the following steps of: acquiring an interference signal of an intraoperative uterine cavity wall area by utilizing OCT equipment, and identifying an adhesion fiber microstructure which is not completely broken so as to judge the existence of an optically invisible residual adhesion microbridge; applying low-frequency bioelectrical stimulation to the wounded area of the uterine cavity during the operation, and marking the wounded area as a tissue repair electrical activity silent area if no blood flow micro-reaction is continuously detected; oCT micro-deformation sequence analysis is carried out on the region after intraoperative dissection is completed, mutation breakpoints of tissue elastic distribution are identified, and the potential risk that traction after-tack occurs in the region is predicted; detecting whether a metabolic oxidation reaction residual zone exists in the operation area or not so as to judge local tissue repair activity decline and re-adhesion tendency; local micro-intervention stimulation is applied to the tissue area judged to be high in risk, OCT imaging is carried out again to detect the reversibility of tissue optical response, and if an image is still fractured and red shift is enhanced, it is judged that the area is the postoperative irreversible adhesion residual area.

The invention discloses an image enhancement intelligent monitoring system for wound healing evaluation. The image enhancement intelligent monitoring system comprises an image acquisition module, an image optimization module, a feature hierarchical enhancement module, a clinical feature adaptive optimization module, a healing key index construction module and a wound healing monitoring module. The invention belongs to the field of image processing, and particularly relates to an image enhancement intelligent monitoring system for wound healing assessment, according to the scheme, a wound area is enhanced by introducing a percolate interference coefficient, a surrounding area is enhanced by introducing a skin tension coefficient, and the key clinical feature identification degree of wound healing is improved; based on dynamic optimization of credibility, setting a flexible critical value, and dynamically adapting to characteristic fluctuation rules of different wounds; the credible features are only subjected to local fine adjustment, and the low-credibility features are subjected to global gradient correction, so that abnormal value interference is avoided; through flexible mean value correction, a single error is smoothed and a dynamic trend is retained so that a wound healing evaluation monitoring effect is improved.

The invention belongs to the technical field of staging identification of stress injury, and particularly relates to a staging identification method of stress injury based on an intelligent image identification technology, which comprises the following steps: S1, multi-modal data acquisition and preprocessing: acquiring a time sequence image sequence of a target wound, the time sequence image sequence is a plurality of images shot for the same wound at different time points; collecting structured risk factor data of the patient; s2, wound area accurate segmentation and local feature quantification: using a semantic segmentation network to carry out pixel-level segmentation on each wound image; based on the segmentation result, objective biomarkers of the wound are quantitatively calculated; and S3, multi-dimensional image feature extraction: spatial feature extraction: using a deep convolutional neural network. According to the invention, the crossing from static evaluation to dynamic monitoring is realized, the perspectiveness and accuracy of staging are improved, and a multi-modal information fusion decision system is constructed, so that staging judgment is more in line with clinical logic.

The invention provides an intelligent application management method and application system based on a flexible multi-mode sensor array, relates to the technical field of medical treatment, and aims to solve the problems that an existing wound management method and intelligent dressing are insufficient in the aspects of real-time monitoring, objective evaluation and intelligent decision making. The method comprises the following steps: acquiring multi-dimensional physiological parameter data output by a flexible multi-modal sensor array; dividing the wound area into N grid units; processing the multi-dimensional physiological parameter data in the N grid units to obtain a characteristic value of each grid unit; constructing an N-order feature matrix reflecting the feature relationship among the N grid units; performing singular value decomposition on the N-order feature matrix, and extracting a maximum singular value as a main feature parameter; performing data alignment on the main characteristic parameters and a preset standard healing curve, and calculating to obtain a healing deviation index; determining a wound healing stage according to a preset threshold interval in which the healing deviation index is located; and generating a dressing replacement prompt signal.

The invention discloses a gel microneedle loaded with silver nanoparticles and a preparation method and application thereof.The extract nano-silver (AB-AgNPs) is prepared through a green synthesis strategy, a drug-loaded microneedle system is constructed based on carboxymethyl chitosan-vanillic aldehyde-polyvinyl alcohol (CMCS-Va-PVA) composite gel, the AB-AgNPs prepared through the technology are uniform in particle size and stable in dispersion, and the drug-loaded microneedle has the advantages that the drug-loaded microneedle is good in drug-loaded performance and good in drug-loaded performance; the crystal has a typical face-centered cubic crystal structure and metal state Ag0 characteristics; the gel microneedle has good mechanical strength and forming effect, the AB-AgNPs and the gel matrix are stably combined through hydrogen bonds, the chemical properties are kept unchanged, and the system has broad-spectrum efficient bacteriostatic activity and biocompatibility; an in-vitro experiment proves that the green synthesized gel microneedle loaded with the silver nanoparticles has a remarkable capability of promoting the healing of L929 cell tissues; a rat wound experiment proves that the gel microneedle can regulate and control an inflammatory factor network and promote cell migration and tissue regeneration, healing of common and infected wounds is remarkably accelerated, and the wound residue ratio in 9 days is as low as 2.7% and 10.9% respectively.

The invention requests to protect an automatic laboratory mouse wound area tracking method and system based on image recognition, images of a wound area are regularly acquired through a multispectral imaging device, parameters such as ambient light and shooting distance are synchronously recorded in the acquisition process to ensure data consistency, the images are preprocessed by using a distributed computing system, and the data consistency is ensured. Inputting the preprocessed image into a deep segmentation model trained based on a large-scale data set to accurately identify and output a binarized contour mask of a wound region, calculating wound geometric features based on the mask, and dynamically generating a quantitative report including an area change rate and a healing trend coefficient; all time sequence data are stored in a time sequence database and used for constructing a complete wound healing track map, and visualization and trend analysis of the healing process are supported. According to the invention, high-flux, automatic and quantitative monitoring of the wound healing process of the laboratory mouse is realized, and objectivity and analysis efficiency of animal experiment data are remarkably improved.

The invention discloses a diabetic foot ulcer monitoring and treatment evaluation device and method based on structured light imaging. The device comprises an image acquisition module, a mechanical arm module, a man-machine interaction module and an information processing module. The mechanical arm module comprises a multi-degree-of-freedom mechanical arm, the image acquisition module comprises at least one structured light image acquisition device, and the mechanical arm drives the image acquisition module to move, acquires three-dimensional point cloud images of feet from different angles and synchronously acquires space coordinates and deflection angles of the image acquisition module; and the information processing module is used for constructing a foot three-dimensional point cloud model by utilizing the three-dimensional point cloud image and the corresponding space coordinates and deflection angles, importing the foot three-dimensional point cloud model into the trained diabetic foot detection and treatment evaluation model for analysis, and displaying a prediction result through the man-machine interaction module. According to the method, the foot three-dimensional point cloud model is reconstructed, the reconstructed model is identified, the area, the volume and the position of the wound surface are evaluated, and then the treatment effect of the current mode can be evaluated.

The invention relates to a device that enables and accelerates wound healing by generating a controlled vacuum used in the healing of chronic and acute wounds and protects the wound area from external effects, and a method for operating said device.

According to the application of the arcangelisia loureiri extract in preparing the burn and scald wound healing medicine, the arcangelisia loureiri crude extract is obtained through extraction and concentration with a decoction method, and wound healing can be promoted by reducing the area of a rat skin wound, shortening the healing time of the rat skin wound, reducing the hyperplasia speed of the skin corium layer and promoting healing of the wound; the effects of remarkably promoting wound healing of burns and scalds and reducing scars are achieved.

This utility model relates to the field of negative pressure drainage technology, specifically a portable negative pressure drainage device, comprising a negative pressure source instrument, a dressing, and a drainage component. The negative pressure source instrument and the dressing are connected and cooperate through the drainage component to form a negative pressure environment to absorb fluid flowing from the patient's skin. The dressing includes a sponge layer, a baffle, and an adhesive layer. The adhesive layer adheres to the patient's skin, and the baffle corresponds to the wound area of ​​the patient's skin. The side of the baffle facing the patient's skin is used to place wet dressing medication, and the side of the baffle away from the patient is connected to the sponge layer. A gap exists between the side of the baffle facing the patient's skin and the patient's skin. The baffle is provided with ventilation holes to connect the gap between the sponge layer, the baffle, and the patient's skin. The sponge layer is used to absorb bodily fluids flowing from the patient's skin. This utility model utilizes the gap between the baffle and the patient's skin to reduce tearing of the patient's wound skin when changing or removing the dressing, thereby reducing the patient's pain.

The utility model discloses an intelligent mesenchymal stem cell local dosing device which comprises a gun body, and a bottle groove is formed in the gun body. A ball seat is arranged on the head of the gun body in a universal rotating mode and provided with a spray head. An administration module is arranged in the gun body, a liquid outlet of the administration module is communicated with the spray head through a flow guide pipe, and a liquid suction port of the administration module is communicated with an inner cavity of a medicine bottle mounted in the bottle groove; infrared scanning heads are arranged on the head portion of the gun body and located on the two sides of the spray head. The infrared scanning head is combined with the image analysis unit to carry out three-dimensional scanning and intelligent identification on a wound, a focus area model is generated in real time, an operator is allowed to carry out manual calibration through an angle-adjustable touch panel, accurate positioning of the area and shape of the wound is achieved, and operation is convenient. The problem that the coverage range of traditional local administration is not matched with the wound surface is solved.

The invention discloses a portable device for promoting wound healing by using hydrogen produced by electrolyzed water. The portable device comprises a hydrogen production mechanism, a conveying mechanism, a connecting mechanism and an application part, the hydrogen production mechanism comprises an electro-hydrolysis hydrogen production assembly and a storage assembly which are communicated with each other, the electro-hydrolysis hydrogen production assembly comprises a shell, the shell is divided into an anode chamber and a cathode chamber, the anode chamber is connected with the cathode chamber, a proton exchange membrane is arranged at the joint of the anode chamber and the cathode chamber, and catalytic electrodes are arranged on the two sides of the proton exchange membrane; a one-way circulation assembly is arranged on the top face of the shell and communicates with the anode chamber, and the cathode chamber communicates with the storage assembly. The conveying mechanism is tubular and is connected with the storage assembly and the connecting mechanism, and a gas on-off control device for conveying hydrogen is arranged in the conveying mechanism; the connecting mechanism is connected with the conveying mechanism and the pasting part. Hydrogen can be generated in real time under safe and controllable conditions, and the hydrogen can be accurately and directionally conveyed to a wound area.

A covering membrane for medical wound area treatment is disclosed for burns or for preventing adhesion. The covering membrane has a substrate layer including a polymer material as well as collagen particles which have a particle size I of more than 80 μm and are disposed in such a way as to be fixedly embedded in at least some portions of the polymer material of the substrate layer. The covering membrane further relates to a process for manufacturing such a covering membrane.

This invention discloses an adjustable pressure constant temperature wound irrigation device, belonging to the field of wound irrigation technology. It includes a constant temperature water tank, with a first connecting pipe fixedly connected to the output end of the water tank. A water pump is installed at one end of the first connecting pipe, and a second connecting pipe fixedly connected to the output end of the water pump. A fixed support is fixedly connected to the bottom of the second connecting pipe. A wound adaptor is also included, with the pressure adaptor disposed inside the fixed support for adapting to wounds of different lengths and adjusting the extension length of the water outlet. This invention, by incorporating a wound adaptor and precisely controlling the extension distance of the spray nozzle to match the wound length through motor start / stop, ensures that the irrigation water flow targets and covers the entire wound area, guaranteeing comprehensive and effective irrigation while avoiding irritation of surrounding healthy tissue. It also replaces manual adjustment, improving the accuracy, controllability, and standardization of operation, while reducing patient discomfort and balancing the effectiveness and comfort of the treatment procedure.

The invention relates to the technical field of medical disinfection equipment, in particular to a wound disinfection device for hand surgery, which comprises a base, the upper surface of the base is provided with a sliding groove, one side of the base is provided with a motor, the output end of the motor is fixedly connected with a screw rod, the outer side wall of the screw rod is in threaded connection with a sliding block, and the sliding block is in threaded connection with the sliding groove. The sliding blocks are slidably connected to the inner side walls of the sliding grooves, and the tops of the sliding blocks are fixedly connected with a shell. An opening is formed in the outer side wall of the shell, a first camera is installed on the inner side wall of the shell, a first mechanical arm is installed on the inner side wall of the shell, the double mechanical arms cooperate to complete the whole process of cleaning, wiping and spraying disinfection, manual operation of medical staff is not needed, and the disinfection efficiency is improved; the electric push rod can adjust the disinfection height according to the requirements of users, a distance sensor and double cameras are used for real-time monitoring and positioning, the operation precision of the mechanical arm is improved, it is ensured that the disinfection action accurately acts on a wound area, and omission and excessive wiping are avoided.

The invention discloses a machine vision-assisted diabetes wound image noise suppression method and system, and relates to the technical field of medical imaging, and the method comprises the steps: extracting reflective image features of a reflective region of a diabetic foot wound image; analyzing and determining a reflection interference type; if the reflection interference type is percolate reflection, performing wound surface area calculation error prediction based on reflection image features; and formulating an adaptive image denoising mechanism according to the predicted area error, and performing reflective noise suppression processing on the diabetic foot wound image. The technical problem that an existing diabetic foot wound image noise suppression method cannot effectively solve interference caused by light reflection of a wound area, and consequently the calculation accuracy of the wound area is insufficient is solved.

The invention discloses a neurotumor postoperative rehabilitation nursing device, which comprises an elastic net cap, an elastic net cap, a main body frame assembly, an elastic net cap, a rehabilitation nursing device, a rehabilitation nursing device and a rehabilitation nursing device, the elastic net cap is provided with air holes, and the main body frame assembly is arranged below the elastic net cap; a limiting rod is slidably arranged on the main body frame assembly, one end of the limiting rod is fixedly connected with a push plate, and the front surface of the push plate is fixedly connected with a supporting soft cushion; by means of the components, the driving sleeves are rotated to be connected with the winding sleeves, the frame can be contracted and expanded to be matched with the head shape and edema changes, the threaded sleeves are connected, pressure can be adjusted in a partitioned mode (pressurization of an edema area and pressure reduction of a wound area), the device does not need to be replaced, and the wound problem is avoided; the U-turn surrounding / pressure regulating function shares the driving sleeve, operation can be conducted only by rotating the sleeve, extra parts are not needed, the device is suitable for patients and medical care, and errors are avoided.

The utility model relates to the technical field of hydrocolloid dressings, in particular to an anti-wound area liquid hydrocolloid dressing. The utility model comprises main release paper, the upper end of the main release paper is provided with a hydrocolloid layer, a hydrocolloid punching layer is arranged above the hydrocolloid layer, an alginate layer is arranged above the hydrocolloid punching layer, and the alginate layer wraps the edges of the hydrocolloid layer and the hydrocolloid punching layer; the upper end of the hydrocolloid punching layer is provided with a plurality of connecting differential hole plum blossom, the inner top wall of the alginate layer is fixedly connected with a plurality of alginate cylinders, and the alginate cylinders are inserted into the connecting differential hole plum blossom; a backing layer is arranged above the alginate layer, and the backing layer is bonded with the main release paper; the alginate layer is in contact with seepage at the cylindrical portion of the alginate, due to the high hygroscopicity of the alginate, redundant hydrops can be rapidly absorbed, and the conditions of skin edema and the like caused by too much seepage at the joint of the hydrocolloid layer and the wound surface are avoided.

The invention discloses a UE5-based plastic surgery preoperative planning method, and belongs to the technical field of graphic processing, and the method comprises the following steps: firstly, converting a static three-dimensional grid model of an affected part of a patient into a dynamic grid model; secondly, on the basis of the dynamic grid model, a wound area to be repaired is delimited on the surface of the model through interactive operation, and morphological characteristics of the wound are simulated; then, virtual resection operation is executed on the delimited wound surface area, and a wound surface defect model is generated; then, simulating the shape of the transplanted skin, tension distribution and the matching degree with the wound surface; in the simulation area, virtual cutting can be carried out on the transplanted skin model and surrounding tissues; and finally, simulating the suture process of the transplanted skin and the wound surface. By combining wound surface treatment, transplantation design and interactive cutting and suturing simulation, a visual and adjustable preoperative plan is provided for an orthopaedic surgery, the rationality and accuracy of an operation scheme are improved, and the operation risk is reduced.

The invention provides a visual bone tissue planing system, the planing system comprises a bone tissue cutting knife system and a visual bone tissue planing system, the bone tissue cutting knife system comprises a grinding head, an image acquisition device and a fluid conveying device, the fluid conveying device comprises a liquid conveying pipeline used for conveying liquid to the image collecting device and a public conveying pipeline used for outputting gas or liquid to the grinding head. The public conveying pipeline is provided with a first input branch, a second input branch and a public pipeline communicated with the first input branch and the second input branch and located on the downstream portion. The visual bone tissue planing equipment comprises an image processor, an image processing device and a visual processing device, wherein the image processor is used for displaying bone tissue images acquired by an image acquisition device and performing image processing on the bone tissue images; the power controller comprises a power control module and a fluid control module. By the adoption of the scheme, the wound surface of the grinding head entering the channel can be reduced, precise cutting of part of bone tissue is conducted synchronously when diseased tissue is observed, and excessive cutting of normal bone tissue is avoided.

This invention discloses an integrated method and system for wound area recognition and recovery time prediction. Belonging to the interdisciplinary fields of medical image processing, artificial intelligence, and clinical nursing, this invention aims to solve the problems of low segmentation accuracy, subjective recovery time prediction, and low operational efficiency caused by the separation of wound recognition and recovery time prediction in traditional wound assessment methods. The key technical points are: employing optimized U-Net++ network technology to achieve accurate wound segmentation, then fusing multi-dimensional features with an XGBoost model to predict recovery time, and integrating image acquisition, processing, quantification calculation, and result output functions. This system is adaptable to various scenarios such as hospital clinical assessment and home nursing monitoring, providing objective and quantifiable assessment data for acute and chronic wounds such as trauma and pressure ulcers. Simultaneously, it achieves integrated processing of wound condition assessment and recovery prediction, significantly improving the accuracy and efficiency of nursing work.

This application relates to the field of medical devices and discloses a wound cleaning device for orthopedic care. The device includes a cleaning bed; a drainage pipe disposed at the bottom of the cleaning bed; a pump assembly and a reciprocating sliding assembly disposed on the cleaning bed; an arc-shaped cleaning disc disposed within the reciprocating sliding assembly and communicating with the pump assembly; detection components disposed on both sides of the arc-shaped cleaning disc; a drive assembly, a positioning assembly, and a dispensing assembly disposed within the arc-shaped cleaning disc, with the drive assembly connected to the positioning assembly; the dispensing assembly contains multiple arc-shaped baffles, a lifting assembly, and a pulse cleaning assembly; and a conversion assembly disposed within the drive assembly. This cleaning device allows for convenient activation of the corresponding drive assembly to form a medication path based on the wound area, preventing medication from spraying onto surrounding healthy tissue, reducing medication waste, and minimizing patient discomfort.

A coil can comprise a coil former and a wire. The coil former can have a body with a cylindrical surface, a flange, a notch, and a wire holder located in a space outside the flange. The wire holder can have a slot opening to the space outside the flange, the slot being wider than the diameter of the wire, and a retaining wall in which the slot is formed. The wire can have a retaining area located in the space outside the flange, in which the retaining area is a portion of the wire formed in at least one loop, an intermediate area extending from one end of the retaining area and passing through the slot to reach a space inside the flange, and a wound area extending from one end of the intermediate area and wound around the cylindrical surface.

The utility model provides tire big polishing equipment pressure regulating device, including base, be provided with processing support on the base, be provided with connecting rod on the processing support rotation, the connecting rod end is provided with the expansion rim, still be provided with the polishing equipment of tire polishing on the base, be provided with the air pump on the base, be installed with pressure regulating device through quick detach assembly on the processing support, and the pressure regulating device is connected with the air pump through the trachea, the pressure regulating device includes installation box, the inside installation box is provided with pressure regulating valve, and the pressure regulating valve is linked with the trachea, be provided with the adjusting knob of pressure regulating valve for controlling on the installation box, still be provided with the pressure gauge that communicates with the pressure regulating valve on the installation box. Set up a set of pressure regulating device on the trachea, can according to demand and adjust high air pressure to make the tire inflation when the pressure in tire rises to critical threshold, the dark wound area that the tire exists is convenient for the intuitive detection, improves dark wound detection rate greatly.

The invention relates to the technical field of medical instruments, in particular to an intelligent alarm type head drainage integrated device which comprises a drainage mechanism, the drainage mechanism comprises a drainage frame, a motor is fixedly connected to the outer wall of the bottom of the drainage frame, and universal wheels are fixedly connected to the outer wall of the side, close to the motor, of the drainage frame. The output end of the motor is fixedly connected with a lead screw, and the drainage tube fixing device is characterized in that the output end of the motor is provided with a sliding block, the sliding block is slidably connected to the outer surface of the lead screw in a sleeving mode, the outer wall of the left side of the sliding block is fixedly connected with an integrated flow detection module, and a drainage tube is clamped into a tube clamp so that the drainage tube can be fixed; nursing operation can be completed only by performing iodophor disinfection on a wound area of the head of a patient or covering a puncture point with a small piece of sterile gauze by a medical worker, so that a pipeline does not need to be wound on the head of the patient in a large area by using an adhesive tape, and convenience is provided for subsequent nursing operation and material replacement of the medical worker.

Drainage device, comprising a vacuum pump (1), a suction line (2) connected to this vacuum pump (1), a gas-tight liquid collection container (6) which is connected to the suction line (2) and serves to reliably maintain the negative pressure and to collect extracted liquid, a suction pipe (5) which is connected to a rear area of ​​a hollow cover element (3) which is open at its front and which opens into the liquid collection container (6) at its end facing away from the cover element (3), characterized by the fact that the cover element (3) has a sponge pad (4) at its front opening, wherein the sponge pad (4) absorbs fluid from the wound area and distributes a negative pressure evenly, wherein the negative pressure generated by the vacuum pump (1) via the suction line (2) first reaches the fluid collection container (6) and from there is directed via the suction tube (5) to the cover element (3) and further to the sponge pad (4), while the fluid absorbed from the wound area is transported via the sponge pad (4) and through the suction tube (5) into the fluid collection container (6).

Wound healing is a process by which these wounds on the skin of a subject heal and eventually close. When the injured surface is large, becomes infected, or in patients with poor healing capacity such as diabetics or the elderly or bedridden patients, then wound healing can be prolonged and lead to chronic ulceration and further complications with even limb loss or increased morbidity and mortality. This invention is directed to a topical formulation for promoting wound healing, and wound dressings and bandages comprising the same.

The utility model provides a detachable horizontal impacted mandibular wisdom tooth separation guide plate which comprises a bracket guide plate capable of being arranged on an inferior alveolar cavity of a patient in a matched mode, a tooth separation guide plate arranged on the bracket guide plate and a connecting assembly arranged between the tooth separation guide plate and the bracket guide plate. An operator can accurately carry out a tooth division operation according to the positioning of the tooth division guide plate on the diseased tooth, so that the risk of complications such as diseased tooth root breakage and the like is remarkably reduced, positioning according to the experience of the operator is not needed, the operation time is remarkably shortened, the operation quality is improved, and the wound area in the operation is reduced; and the device has the advantages of simple structure, simplicity and convenience in operation, low preparation cost, disposable use and convenience in popularization and implementation.

The utility model discloses a device for promoting wound healing, which comprises a limiting ring and a healing ring which are both of an oval structure. The inner ring of the limiting ring is of a step structure, and a limiting groove of an annular structure is formed in the step. The healing ring comprises an outer ring, the outer ring is embedded into the limiting groove, the outer ring and the limiting groove are in clearance fit, the outer ring is located in the limiting groove to rotate, a pair of connecting strips are arranged at the two ends of the interior of the outer ring in the length direction, a plurality of elastic rings of oval structures are arranged between the outer sides of the connecting strips, and closed rings are arranged on the opposite faces of the connecting strips. According to the utility model, micro-stress is applied to the wound area, the gap of the wound area is reduced and controlled, stress shielding of the wound area is realized through the structure on the outer side, and the influence of stress strain generated by body movement and movement of other parts of the body on calluses is reduced; it is ensured that cell proliferation and tissue repair are stably carried out in a stable state in the wound healing stage.