23 results about "Wound edge" patented technology

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 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.

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 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 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.

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 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.

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.

According to the lipid hydrocolloid silver-loaded zeolite antibacterial dressing, the preparation method and application thereof and the preparation, zeolite confinement and ion exchange are achieved, stable release is achieved, the characteristics of rapid release in the initial stage, gradual retarding in the middle stage and tending to be stable in the later stage are shown, and sufficient silver ion concentration can be provided in the initial stage of a wound so as to play an antibacterial role; meanwhile, a certain silver ion concentration is maintained in a subsequent time period, so that the antibacterial effect is continuously exerted, the potential toxicity to tissues is reduced, and the early peak value and potential stimulation are reduced; in the formula, non-specific migration of silver to the wound edge is reduced by oleophylic / hydrophilic phases in a synergistic manner, and the silver-loaded wound dressing has broad-spectrum efficient antibacterial performance, has greater than or equal to 90% of antibacterial potential for gram positive / negative model bacteria, and is adaptive to a multi-colony loaded wound surface.

The present application relates to the technical field of image recognition, in particular to a data processing method and system based on wound image recognition, comprising the following steps: collecting signals to construct a multi-dimensional photoelectric pixel matrix, calculating global light distribution weight and generating a standardized tissue feature map, extracting deep necrotic texture vectors and granulation metabolic activity index, generating an infection probability distribution matrix, constructing an irregular geometric contour set and a wound edge shrinkage coefficient, and generating adaptive diagnosis and treatment intervention instructions and a final wound evaluation report through a healing trend prediction model.In the present application, by constructing a local texture feature matrix and its difference mapping with a spatial geometric vector, the specific physiological state weight is adaptively calculated, the interference of environmental background noise on the edge recognition process is eliminated, the calculation accuracy of the target region boundary is improved, and the high reliability of the final classification data output under variable light conditions is ensured.

The invention belongs to the technical field of medical apparatus and instruments, and provides a hemostasis device for open wounds of maxillofacial regions, which comprises an adhesive patch, a plurality of air bag groups, a pressure patch, an air supply component, a plurality of electromagnetic switches and a control chip, each air bag group comprises a plurality of air bags which are closely arrayed and communicated, an air inlet is formed in one air bag, the pressure patches are pasted on the air bags in a one-to-one correspondence mode, an air outlet pipe of the air supply component is communicated with the air inlets in the air bag groups, and the electromagnetic switches are arranged on the air outlet pipe in a one-to-one correspondence mode. The control chip is fixed to the non-sticky side of the sticky patch and is in communication connection with the electromagnetic switch and the pressure patch. According to the invention, continuous manual compression by medical personnel is not needed, the edge area of the wound can be automatically identified and targeted compression can be performed, and secondary injury easily caused when a patient is transferred in a traditional hemostasis mode is avoided.

The invention relates to the technical field of image processing, in particular to a wound nursing intelligent monitoring system based on image processing, which comprises the following steps: firstly, acquiring a wound area in a wound image of an injured patient in each wound detection process, and combining gray and hue characteristics represented by the surface granulation hyperplasia condition and the surface tissue fluid exudation condition of the wound area to obtain a wound image; determining wound infection parameters representing granulation growth conditions of the wound; determining the healing synchronization degree representing the patient wound merging effect according to the inward merging speed of the patient wound edge and the image area edge change characteristics represented by the consistency during inward merging; and on the basis of the healing synchronization degree, the traction condition of the wound on the surrounding skin during healing is analyzed through the distribution characteristics of the edge and the gradient, so that the accuracy of the obtained wound healing index is higher.

The utility model belongs to the technical field of hemostasis and bandaging, and particularly relates to an emergency room hemostasis and bandaging nursing device which comprises a main protecting band and two body surface connecting parts, a hemostasis part is arranged on the lower side of the main protecting band, the body surface connecting parts are connected with the main protecting band through connecting bands, and the length of the connecting bands located between the main protecting band and the body surface connecting parts is adjustable. A first bonding part is arranged on the upper side of the main protection band, the connecting band can be bonded to the first bonding part, the main protection band comprises a lower pressing plate and a connecting plate, the hemostasis part is arranged on the lower side of the lower pressing plate, the first bonding part is arranged on the upper side of the connecting plate, and a distance adjusting mechanism is arranged between the lower pressing plate and the connecting plate. The spacing adjusting mechanism comprises a screw rod which is in threaded connection with the first bonding part, and the lower end of the screw rod is rotationally connected with the lower pressing plate. According to the bandage, wound edges on the two sides of a wound can abut against each other tightly when the wound is bound, and the purpose of effectively stopping bleeding at the wound area is achieved.

The invention relates to a polyvinyl alcohol / graphene oxide composite hydrogel patch as well as a preparation method and application thereof.According to hydrogel, graphene oxide nanosheets are introduced into polyvinyl alcohol, a brick-mud structure similar to a pearl layer is obtained through evaporation self-assembly, an interface is further reinforced through covalent crosslinking, and the composite hydrogel patch is prepared. And when the hydrogel patch is used for skin wound nursing, rigid and tough synergism effectively adjusts wound edge stress concentration and resists long-term mechanical stress disturbance, so that formation of abnormal skin scars induced by dynamic mechanical stimulation is inhibited. The invention provides a hydrogel patch which can obviously shield stress and is stable for a long time, and the hydrogel patch is suitable for medical application such as wound nursing in highly movable or curved skin areas.

This invention belongs to the field of medical device technology. It discloses a multi-axis stretchable wound zipper device and its manufacturing method. The device includes an upper dressing encapsulation layer, a lower dressing encapsulation layer, shape memory alloy shrinking units, a serpentine flexible conductive layer, an elastomer encapsulation layer, a flexible microcontroller unit, and a power supply unit. The shape memory alloy shrinking units are arranged in a regular hexagon, possessing six degrees of freedom to stretch freely along six axial directions spaced 60 degrees apart, to match wounds of different shapes, and shrink axially under electrothermal drive to achieve wound edge closure. The manufacturing method includes laser cutting of nickel-titanium shape memory alloy sheets, serpentine flexible conductive layers, transfer of serpentine conductive layers, and layered encapsulation and etching. This invention can adapt to wounds of various complex shapes such as linear, triangular, rectangular, and circular, achieving programmable personalized mechanical shrinkage, with fast response speed, low driving voltage, simple operation, and significantly promoting wound healing.

This invention relates to the field of image processing technology, specifically to an intelligent wound care monitoring system based on image processing. First, it acquires wound images of the injured patient during each wound inspection process. Then, it combines the grayscale and hue characteristics of the granulation tissue growth and tissue fluid exudation on the wound surface to determine wound infection parameters characterizing the granulation tissue growth status. Furthermore, it determines the degree of healing synchronization, characterizing the wound merging effect, by analyzing the image region edge change characteristics, such as the speed of inward merging of the wound edges and the consistency of this inward merging. Based on this degree of healing synchronization, it analyzes the traction of the wound on the surrounding skin during healing through edge and gradient distribution characteristics, resulting in a more accurate wound healing index.

The invention provides a forensic injury condition analysis method and system based on three-dimensional modeling and a visual language large model, and relates to the technical field of data processing.The method comprises the steps that an original three-dimensional model of a wound part is collected through a structured light scanner, the original three-dimensional model is preprocessed, and a standardized wound three-dimensional model is obtained; the method comprises the following steps: identifying three wound edge vertexes of a wound edge in a standardized wound three-dimensional model, establishing a reference topological relation, and carrying out multi-level structure subdivision on the reference topological relation based on a deep feature extraction mechanism of a convolutional neural network to obtain a subdivided topological structure; deep extraction and quantitative analysis of wound deformation features are carried out on the subdivided topological structure, the feature information of the wound tiny deformation and the fine topological structure is accurately captured, and the feature information obtained through extraction and analysis is combined to calculate and obtain proportion calibration parameters. According to the invention, accurate quantitative extraction of wound features, standardized data processing and intelligent wound identification reasoning are realized.

The application relates to the technical field of oral surgery, and discloses an oral and maxillofacial surgery postoperative oral nursing device, which comprises a mounting cover, a connecting plate and a blocking plate fixedly connected to one side of the mounting cover, one side of the connecting plate is fixedly connected with a liquid storage cylinder, the inside of the mounting cover is provided with a liquid injection assembly, the inside of the connecting plate is provided with a driving assembly, the liquid injection assembly comprises a liquid injection pipe and a suction pipe fixedly connected to one side of the blocking plate, through the liquid injection assembly, the liquid injection head is moved from the two sides of the wound edge to the center position of the wound, a large flow is injected into the wound edge area, a small flow is injected into the center area of the wound, the suction flow of the suction pipe can be correspondingly increased and reduced synchronously, the extraction of the nursing liquid is matched with the liquid injection, the excessive accumulation of the nursing liquid caused by the increased flow is avoided, the soaking damage of the nursing liquid residue to the wound is reduced, and the matching and flexibility of the oral wound liquid injection are improved.

This invention discloses a cross-suture device and its method of use, relating to the field of medical device technology. The suture device includes at least two suture components arranged crosswise and marked with different colors, and an adjustment structure. Each suture component contains biocompatible sutures with multiple fixed points spaced apart, anchored to the wound edge by titanium clips. The adjustment structure is integrated into the handle, allowing adjustment of the suture contraction force and traction direction, and features a locking mechanism to prevent rebound. During use, the fixed points are first anchored, and then the sutures are tightened step-by-step according to the color markings, ensuring uniform wound healing and reinforcement. This invention employs cross-segmented sutures to disperse wound tension, significantly reducing the amount of titanium clips used; the color markings facilitate precise operation, shorten surgical time, eliminate submucosal dead space, and reduce the risk of postoperative complications. It is suitable for closing ESD wounds with a diameter >20mm or irregular shapes.