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CN-121242552-B - Intelligent measurement and analysis terminal for skin wound area

CN121242552BCN 121242552 BCN121242552 BCN 121242552BCN-121242552-B

Abstract

The invention discloses an intelligent measurement and analysis terminal for skin wound area, and relates to the technical field of medical appliances. In order to solve the problems that the traditional flexible rule measurement is easy to cause cross infection, has large error on irregular and sensitive wound surfaces, cannot capture three-dimensional characteristics such as wound depth and the like to judge the severity and healing potential, and simultaneously lacks the capability of predicting the healing risk and misses intervention opportunity; the invention acquires data cooperatively through the laser projection component, the non-contact depth sensor and the optical imaging camera, avoids cross infection caused by direct contact of the traditional flexible rule with the wound, simultaneously generates a complete wound three-dimensional model through the accurate calculation area of the grid scale and the three-dimensional point cloud data and a wound model construction module, quantitatively extracts three-dimensional characteristic parameters such as depth, texture, color occupation ratio and the like, provides a multi-dimensional objective basis for judging the severity and healing potential of the wound, generates future healing trend prediction and risk early warning, and helps medical staff avoid risks in advance.

Inventors

  • LI RUNXIAO
  • GUO JIANYING
  • DENG QUN
  • KONG YUANYUAN
  • WANG ZE

Assignees

  • 中国人民解放军总医院第四医学中心

Dates

Publication Date
20260508
Application Date
20251010

Claims (8)

  1. 1. The intelligent skin wound area measurement and analysis terminal is characterized by comprising a handheld intelligent measurement terminal, wherein a wound data acquisition module, a wound model construction module and a wound analysis module are integrated in the handheld intelligent measurement terminal; the wound data acquisition module is used for synchronously capturing wound data information based on the depth sensor and the optical imaging camera, processing and integrating the acquired wound data information and generating corresponding three-dimensional point cloud data; The wound model construction module is used for preprocessing the three-dimensional point cloud data, constructing a complete wound three-dimensional model based on the three-dimensional point cloud data corresponding to the multiple views, and determining the wound edge contour; The wound analysis module is used for calling historical wound measurement data of the same patient, generating a dynamic healing curve based on a time sequence, marking healing key nodes, establishing a dynamic risk model through historical data statistics for risk early warning, and integrating multidimensional information to generate a later-period change prediction report and an adjustment suggestion; the handheld intelligent measurement terminal comprises a handheld intelligent measurement terminal body, wherein a light supplementing module and a power module are integrated in the handheld intelligent measurement terminal body, the light supplementing module automatically adjusts brightness according to ambient light intensity, and the power module is a rechargeable lithium battery; The light filling module still includes: Constructing a terminal three-dimensional model in a three-dimensional space of the wound three-dimensional model according to the acquisition reference distance between the handheld intelligent measurement terminal and the surface of the skin wound area; Simulating light filling in a three-dimensional space according to a light filling strategy preset by the light filling device, and determining a first direction vector from the light source center of the virtual light filling device to each surface point under each light filling strategy; Constructing a second direction vector according to the perpendicular line from the surface point to the normal skin surface around the wound; calculating vector angles of the first direction vector and the second direction vector, and taking the vector angles as light supplementing angles of the corresponding surface points; matching a first proper value of the light supplementing angle according to a preset light supplementing angle suitability evaluation library, and correlating the first proper value with the surface point; Determining illumination parameters of each surface point under each light supplementing strategy; Determining a second proper value of the illumination parameter according to the color characteristics and the texture characteristics of the surface points based on the illumination suitability evaluation model, and associating the second proper value with the surface points, wherein the illumination suitability evaluation model evaluates whether the known illumination parameter is favorable for clear presentation of the wound characteristics or not according to the wound images marked with the color characteristics and the texture characteristics through a plurality of manual evaluation records, and takes the marked color characteristics, texture characteristics and the known illumination parameter as input parameters of a machine learning model and takes the manual evaluation value as output parameters during training; carrying out weighted fusion on the first proper value and the second proper value associated with the surface point to obtain a target proper value corresponding to the surface point; summing the target suitability values corresponding to all the surface points under the same light supplementing strategy to obtain the suitability of the corresponding light supplementing strategy; And (5) applying a light supplementing strategy with highest suitability.
  2. 2. The intelligent measurement and analysis terminal for skin wound area of claim 1, wherein the wound data acquisition module comprises: The acquisition and calibration unit is used for calibrating each component before skin wound data acquisition, and determining a laser projection mode and acquisition parameters according to pre-input operation requirements and wound type information after calibration; The data synchronous capturing unit is used for synchronously acquiring the wound area, the original depth data and the original optical data of the wound area of the patient based on the determined laser projection mode and the acquisition parameters, and monitoring the working synchronism of each component in real time in the acquisition process; the wound data integration unit is used for preprocessing the obtained original depth data and the original optical data, establishing a corresponding relation between the original optical data and the original depth data, extracting wound color characteristic data by combining projection scale data, and generating three-dimensional point cloud data.
  3. 3. The intelligent skin wound area measurement and analysis terminal of claim 2, wherein the wound data acquisition module further comprises: Extracting an acquisition reference distance between the handheld intelligent measurement terminal and the surface of the skin wound area based on the depth sensor, extracting an imaging distance of the optical imaging camera, and comparing and calibrating the imaging distance with the acquisition reference distance; Matching degree calculation is carried out on the calibrated acquisition reference distance and a preset laser projection adaptation threshold value, and whether the current distance is in an effective measurement interval is judged based on a calculation result; and establishing an adaptation relation between the acquisition reference distance and the grid density, determining adaptation distance parameters of all the components by combining preset adaptation distance parameter reference values, and setting acquisition parameters of all the components based on the adaptation distance parameters.
  4. 4. A skin wound area intelligent measurement and analysis terminal according to claim 3, wherein the data synchronization capturing unit further comprises: Transmitting the grid-shaped projection scale and the corresponding skin injury color contrast graph to a wound and a surrounding normal skin area of a patient according to the determined laser projection mode, and controlling the corresponding assembly to scan and collect the wound area of the patient according to preset collection parameters; continuously projecting a grid-shaped projection scale by the laser projection component, counting the number of complete grids and half grids covering the wound, acquiring preliminary area data of the wound in real time, comparing the actual color of the wound with a projected standard color contrast chart, and determining the color type of the wound; the depth sensor acquires depth information of different positions of the wound in real time, and the optical imaging camera synchronously acquires image data of a wound area of a patient and synchronously acquires original depth data and original optical data.
  5. 5. The intelligent skin wound area measurement and analysis terminal of claim 4, wherein the wound model construction module comprises: The edge contour determining unit is used for extracting depth difference values, color difference values and texture difference values of the wound area and the peripheral normal skin area in the preprocessed three-dimensional point cloud data and constructing a boundary judgment index of multi-feature fusion; Gradually growing and expanding a normal skin area by taking a preset normal skin pixel point as a seed point and combining a boundary judgment index to determine a growth boundary of an area which is not covered by growth; Smoothing the growth boundary to generate continuous wound edge contour data, calculating the area of an area surrounded by the contour, calculating a difference value between the continuous wound edge contour data and the wound area calculated by the wound data acquisition module, and if the difference value exceeds a preset area deviation threshold value, carrying out three-dimensional point cloud data preprocessing operation again; The model output unit is used for constructing a complete three-dimensional model of the wound based on the determined wound edge contour and combining the original optical data and the original depth data, and synchronously transmitting the constructed complete three-dimensional model of the wound and the wound edge contour data to the wound analysis module.
  6. 6. The intelligent measurement and analysis terminal for skin wound area according to claim 5, wherein the wound model construction module further comprises a wound feature quantization unit for performing feature quantization extraction on the complete wound three-dimensional model to generate multi-dimensional wound feature parameters: Acquiring an actual area of the wound based on the edge contour generated by the wound edge contour determining unit and the coordinates of the contour discrete points; Traversing each surface point in the three-dimensional wound model, calculating the vertical distance between each surface point and the normal skin surface around the wound, recording the maximum distance as the maximum depression depth of the wound, and calculating the distance average value of all depression points and taking the distance average value as the average depression depth; extracting a gray level co-occurrence matrix of the wound surface model, calculating texture characteristic parameters such as contrast, correlation, energy and the like of the gray level co-occurrence matrix, and quantitatively representing roughness and tissue uniformity of the wound surface; Based on the wound color feature data, dividing the wound area into a plurality of subareas, respectively extracting the color feature of each subarea, carrying out statistics, obtaining the duty ratio of each color type in the wound area, and generating a color distribution histogram.
  7. 7. The intelligent skin wound area measurement and analysis terminal of claim 6, wherein the wound analysis module comprises: The historical data retrieving unit is used for receiving patient information input by medical staff, retrieving historical wound measurement data of the patient, including a three-dimensional model of the historical wound, multidimensional wound characteristic parameters and corresponding measurement time stamps, and constructing a wound data time sequence corresponding to the patient; The healing curve generating unit is used for determining target values of the multi-dimensional wound characteristic parameters based on the wound data time sequence and drawing an area healing curve, a depth healing curve and a color healing curve of the patient based on the target values; The healing prediction early warning unit is used for extracting multidimensional information characteristics of the current patient, carrying out characteristic matching on standardized cases in the clinical healing case database, screening reference cases, generating corresponding prediction reports, carrying out risk early warning, and generating corresponding intervention suggestions; And the report output unit is used for integrating the dynamic healing curve, the future healing trend prediction curve, the risk early warning result and the intervention suggestion into a post-wound change prediction report.
  8. 8. The intelligent measurement and analysis terminal for skin wound area according to claim 7, wherein the early-warning step of performing risk early-warning in the healing prediction early-warning unit comprises: According to the corresponding relation between the target value in the historical wound measurement data and the historical measurement point, calculating the historical healing rate of each healing type; Calculating a historical healing rate mean value and a historical healing rate standard deviation of each healing type according to the historical healing rate; Calculating a dynamic risk threshold of each healing type according to the historical healing rate mean value and the historical healing rate standard deviation; if the current healing rate is smaller than the corresponding dynamic risk threshold, generating a delayed healing warning of the corresponding healing type, and calculating delayed healing time; and warning the delayed healing warning and the corresponding delayed healing time together as risk information.

Description

Intelligent measurement and analysis terminal for skin wound area Technical Field The invention relates to the technical field of medical equipment, in particular to an intelligent measurement and analysis terminal for skin wound area. Background In clinical care, accurate assessment of skin wounds is the core basis for formulating treatment regimens, tracking healing processes, and evaluating efficacy. However, the traditional flexible rule measurement relies on direct operation of medical staff on the surface of a wound, so that cross infection of the wound and a measuring tool is easy to cause, accurate length-by-width data is difficult to obtain for irregular shapes or sensitive wound surfaces, measurement errors are large, the traditional projection rule can realize non-contact area measurement, but only can provide two-dimensional plane data, cannot capture three-dimensional characteristics such as wound depth, sunk layers and tissue defects, and the like, cannot judge the severity and healing potential of the wound according to the indexes, the prejudging capability of wound healing risks is lacking, and a scheme can be adjusted after problems such as infection, healing delay and the like are revealed, so that a good intervention opportunity is missed. Disclosure of Invention The invention aims to provide an intelligent measurement and analysis terminal for skin wound area, which is used for cooperatively acquiring data through a laser projection component, a non-contact depth sensor and an optical imaging camera, meanwhile, the area is accurately calculated through a grid scale and three-dimensional point cloud data without depending on wound rule forms, future healing trend prediction and risk early warning are generated, medical staff is helped to avoid risks in advance, and treatment efficiency is improved, so that the problems in the background technology are solved. In order to achieve the above purpose, the present invention provides the following technical solutions: the intelligent measurement and analysis terminal for the skin wound area comprises a handheld intelligent measurement terminal, wherein a wound data acquisition module, a wound model construction module and a wound analysis module are integrated in the handheld intelligent measurement terminal; The wound data acquisition module is used for synchronously capturing wound data information based on the depth sensor and the optical imaging camera, processing and integrating the acquired wound data information and generating corresponding three-dimensional point cloud data: The wound model construction module is used for preprocessing the three-dimensional point cloud data, constructing a complete wound three-dimensional model based on the three-dimensional point cloud data corresponding to the multiple views, and determining the wound edge contour; The wound analysis module is used for calling historical wound measurement data of the same patient, generating a dynamic healing curve based on a time sequence, marking healing key nodes, integrating multidimensional information, and generating a prediction report and an adjustment suggestion of the change of the later period of the wound. Further, the wound data acquisition module includes: The acquisition and calibration unit is used for calibrating each component before skin wound data acquisition, and determining a laser projection mode and acquisition parameters according to pre-input operation requirements and wound type information after calibration; The data synchronous capturing unit is used for synchronously acquiring the wound area, the original depth data and the original optical data of the wound area of the patient based on the determined laser projection mode and the acquisition parameters, and monitoring the working synchronism of each component in real time in the acquisition process; the wound data integration unit is used for preprocessing the obtained original depth data and the original optical data, establishing a corresponding relation between the original optical data and the original depth data, extracting wound color characteristic data by combining projection scale data, and generating three-dimensional point cloud data. Further, the wound data acquisition module further includes: Extracting an acquisition reference distance between the handheld intelligent measurement terminal and the surface of the skin wound area based on the depth sensor, extracting an imaging distance of the optical imaging camera, and comparing and calibrating the imaging distance with the acquisition reference distance; Matching degree calculation is carried out on the calibrated acquisition reference distance and a preset laser projection adaptation threshold value, and whether the current distance is in an effective measurement interval is judged based on a calculation result; and establishing an adaptation relation between the acquisition reference distance and the grid density, determ