Electrical field dressing based on ranging imaging and projection positioning and methods of use thereof

Abstract

The application discloses an electric field dressing based on ranging imaging and projection positioning and a use method thereof, and the electric field dressing comprises a dressing body, an electrode sheet, an imaging device, a ranging device, an image processing module and a projection device; the electrode sheet comprises a ring-shaped positive electrode and a point-shaped negative electrode; the imaging device is used for acquiring an image size; the ranging device is used for measuring a vertical distance between the imaging device and a wound surface; the image processing module is used for calculating an actual size of the wound surface, determining a size of the ring-shaped positive electrode and generating a layout pattern according to the acquired image size; and the projection device is used for projecting the layout pattern to a bottom surface of the dressing body to form a projection mark. The use method comprises the following steps: S1, collecting a wound image and an image size; S2, acquiring a vertical height H between the imaging device and the wound surface; S3, calculating the actual size of the wound surface and determining the size of the ring-shaped positive electrode; S4, forming the projection mark; and S5, attaching the electrode sheet to the bottom of the dressing body, and then attaching the dressing body to the wound surface. The application has the advantages of accurately measuring the size of the wound surface and accurately determining and positioning the electrode.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an electric field dressing based on ranging imaging and projection positioning and its application method. Background Technology

[0002] Skin and soft tissue injuries are among the most common types of trauma in clinical practice. The treatment of chronic, refractory wounds (such as diabetic foot ulcers and pressure injuries) remains a significant clinical challenge. Negative pressure wound therapy (NPWT) has been widely used in the treatment of chronic wounds, effectively draining exudate, reducing tissue edema, and promoting granulation tissue growth. Studies have shown that bioelectrical signals play a crucial role in tissue repair; after skin injury, an endogenous electric field ("damage current") is spontaneously generated, which can directionally guide epithelial cells, fibroblasts, and other cells to migrate to the wound surface and promote angiogenesis and nerve regeneration.

[0003] Based on this, existing technologies have developed negative pressure electric field dressings with external electric fields. These dressings simulate and enhance the biological effects of endogenous electric fields by applying stable electrical stimulation to the wound. However, electric field therapy requires the positive electrode to be placed on normal skin surrounding the wound, and the negative electrode to be placed in the central region of the wound, in order to form a directional electric field that effectively guides cell migration and promotes healing. Currently available electric field dressings have the following drawbacks: First, the electrode layout is mismatched with the wound morphology. Existing dressings often use a set of fixed positive and negative electrodes to cover the entire wound. When the wound shape is irregular, compact, and discontinuous, the fixed electrodes cannot accurately fit the wound contour, causing the positive electrode to fall onto the wound surface (causing pain and injury) or the negative electrode to deviate from the center of the wound (affecting treatment efficacy). Some dressings use cuttable flexible electrode films, but cutting relies on manual visual inspection, resulting in poor precision, low efficiency, and an inability to guarantee the relative positional relationship of the positive and negative electrodes.

[0004] Secondly, there is a lack of scientific methods for determining electrode size. In existing technologies, the size of the electrode coil is mostly determined empirically, without considering the relationship between the actual size of the wound and the electric field strength. According to the electric field strength formula E=U / d, the electrode spacing d (i.e., the distance between the positive and negative electrodes) directly affects the distribution of the electric field strength. If the electrode coil size is too small, the positive electrode may fall on the edge of the wound, causing pain and secondary damage; if the electrode coil size is too large, the electric field strength attenuates too much and cannot effectively act on the wound.

[0005] Third, handling multiple wound scenarios is cumbersome. When there are multiple discrete small wounds, traditional methods require measuring, cutting, and applying multiple dressings one by one, which is complicated and inefficient, increasing the workload of medical staff and the treatment time for patients. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an electric field dressing based on ranging imaging and projection positioning, and its application method, which accurately measures the wound size, scientifically determines the size of the electrode ring, and accurately positions the electrode.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An electric field dressing based on ranging imaging and projection positioning, comprising: The dressing itself is used to be applied to the wound. The electrode pads, including a ring-shaped positive electrode and a dot-shaped negative electrode, are attached to the bottom of the dressing body; Imaging device used to acquire images of the wound and obtain image dimensions; A ranging device is used to measure the vertical distance between the imaging device and the wound. The image processing module calculates the actual size of the wound, determines the size of the annular positive electrode, and generates a layout pattern based on the size of the acquired image. A projection device is used to project the layout pattern onto the bottom surface of the dressing body to form a projection mark; The annular positive electrode is attached to the bottom surface of the dressing body according to the projection mark, and the dotted negative electrode is attached to the bottom surface of the dressing body at the center of the annular positive electrode.

[0008] As a further improvement to the above technical solution: The imaging device, ranging device, and projection device are integrated into the same handheld device, which includes a height adjustment bracket and a level.

[0009] It also includes a control unit, which is connected to the imaging device, the ranging device and the projection device, and is used to control the coordinated operation of each device.

[0010] The control unit also includes a storage module for storing wound images, electrode layout patterns, and treatment parameters to form a treatment record.

[0011] A transparent release film is provided at the bottom of the dressing body, and the projection device projects the electrode layout pattern onto the transparent release film.

[0012] The top of the dressing body is covered with a flexible sealing film for sealing and fixing the dressing body to the wound.

[0013] The flexible sealing membrane is provided with a negative pressure component that communicates with the dressing body. The negative pressure component includes a negative pressure suction cup and a negative pressure drainage tube. The negative pressure suction cup is located on the flexible sealing membrane and communicates with the dressing body. One end of the negative pressure drainage tube is connected to the negative pressure suction cup, and the other end is connected to an external negative pressure device.

[0014] A method for using an electric field dressing based on ranging imaging and projection positioning includes the following steps: S1: Acquire wound images and measure image dimensions using an imaging device; S2: Obtain the vertical height H between the imaging device and the wound using a ranging device; S3: The image processing module calculates the actual size of the wound using a diagonal triangle algorithm based on the acquired image size, and determines the size of the annular positive electrode based on the actual size; S4: The imaging device projects a pattern containing the size of a ring-shaped positive electrode at a vertical height H onto the bottom of the dressing body through a projection device to form a projection mark; S5: Attach the electrode pads to the bottom of the dressing body according to the projection marks, and then apply the dressing body to the wound.

[0015] As a further improvement to the above technical solution: In step S3, the diameter D of the annular positive electrode is determined according to the electric field strength formula: E=U / d, where D=d+1cm.

[0016] The method further includes: when the wound is multiple discrete wounds, steps S1-S4 are executed respectively to generate multiple electrode patterns, and in step S5, the patterns are projected onto the bottom surface of the dressing body at once.

[0017] Compared with the prior art, the advantages of the present invention are as follows: This invention calculates the actual size of the wound through imaging and ranging, scientifically determines the size of the annular positive electrode, precisely fits the wound, ensures that the electrode ring completely covers the normal skin around the wound, and avoids damage caused by the electrode diameter contacting the wound. The electrode layout pattern is directly projected onto the bottom surface of the dressing to form a visual fitting mark, which is simple and convenient to operate and greatly improves the positioning accuracy of the electrode. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the dressing structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the diagonal triangle algorithm of the present invention.

[0020] Figure 3 This is a schematic diagram of the electrode sheet layout of the present invention.

[0021] Figure 4 This is a flowchart of the dressing application process of the present invention.

[0022] The labels in the diagram represent: 1. Dressing body; 2. Electrode pad; 21. Ring-shaped positive electrode; 22. Dot-shaped negative electrode; 3. Transparent release film; 4. Flexible sealing film; 5. Negative pressure assembly; 51. Negative pressure suction cup; 52. Negative pressure drainage tube. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 3 As shown, the electric field dressing based on ranging imaging and projection positioning in this embodiment includes: a dressing body 1 for applying to a wound; an electrode sheet 2, including a ring-shaped positive electrode 21 and a dot-shaped negative electrode 22, attached to the bottom of the dressing body 1; an imaging device for acquiring wound images and obtaining image dimensions; a ranging device for measuring the vertical distance between the imaging device and the wound; an image processing module for calculating the actual size of the wound, determining the size of the ring-shaped positive electrode 21, and generating a layout pattern based on the acquired image dimensions; and a projection device for projecting the layout pattern onto the bottom surface of the dressing body 1 to form projection marks; the ring-shaped positive electrode 21 is attached to the bottom surface of the dressing body 1 according to the projection marks, and the dot-shaped negative electrode 22 is attached to the bottom surface of the dressing body 1 at the center position of the ring-shaped positive electrode 21. This invention calculates the actual size of the wound through imaging and ranging, scientifically determines the size of the annular positive electrode 21, precisely fits the wound, ensures that the electrode ring completely covers the normal skin around the wound, and avoids damage caused by the electrode diameter contacting the wound. The electrode layout pattern is directly projected onto the bottom surface of the dressing to form a visual fitting mark, which is simple and convenient to operate and greatly improves the positioning accuracy of the electrode.

[0025] In this embodiment, the imaging device, ranging device, and projection device are integrated into a single handheld device, which includes a height-adjustable stand and a level. This integrated design saves space and facilitates operation.

[0026] This embodiment also includes a control unit, which is connected to the imaging device, ranging device, and projection device to control the coordinated operation of each device. Unified control by the control unit reduces human intervention and operational errors.

[0027] In this embodiment, the control unit also includes a storage module for storing wound images, electrode layout patterns, and treatment parameters to form a treatment record. This record created through the storage module makes the treatment data traceable and facilitates subsequent review and evaluation.

[0028] In this embodiment, a transparent release film 3 is provided at the bottom of the dressing body 1, and the projection device projects the electrode layout pattern onto the transparent release film 3. The transparent release film 3 serves as a projection medium, providing high contrast and facilitating identification and application by the operator. Before use, the transparent release film 3 covers the bottom of the dressing body 1 to prevent contamination.

[0029] In this embodiment, the top of the dressing body 1 is covered with a flexible sealing film 4 for sealing and fixing the dressing body 1 to the wound. The flexible sealing film 4 forms a sealed environment, preventing external bacteria from entering and fixing the dressing body 1. In this embodiment, a negative pressure assembly 5, communicating with the dressing body 1, is provided on the flexible sealing membrane 4. The negative pressure assembly 5 includes a negative pressure suction cup 51 and a negative pressure drainage tube 52. The negative pressure suction cup 51 is disposed on the flexible sealing membrane 4 and communicates with the dressing body 1. One end of the negative pressure drainage tube 52 is connected to the negative pressure suction cup 51, and the other end is connected to an external negative pressure device. The synergistic effect of electrical stimulation therapy and negative pressure therapy improves the therapeutic effect.

[0030] like Figure 4 As shown, the method for using the electric field dressing based on ranging imaging and projection positioning of the present invention includes the following steps: S1: Acquire wound images and measure image dimensions using an imaging device; S2: Obtain the vertical height H between the imaging device and the wound using a ranging device; S3: The image processing module calculates the actual size of the wound using a diagonal triangle algorithm based on the acquired image size, and determines the size of the annular positive electrode 21 based on the actual size; S4: The imaging device projects a pattern containing the size of the annular positive electrode 21 at a vertical height H onto the bottom of the dressing body 1 through the projection device to form a projection mark; S5: Attach the electrode pad 2 to the bottom of the dressing body 1 according to the projection marks, and then apply the dressing body 1 to the wound.

[0031] This method transforms electrode placement from experience-dependent to algorithm-driven, with clear steps and a fixed sequence, ensuring consistency and repeatability for each treatment operation.

[0032] In this embodiment, the imaging device takes a picture at a certain height H using a ranging device. The imaging device displays an image with a length of c and a width of k. The actual length C and width K of the wound can be calculated using the size of the image and the diagonal triangle algorithm.

[0033] In this embodiment, in step S3, the diameter D of the annular positive electrode 21 is determined according to the electric field strength formula: E=U / d, where D=d+1cm. Introducing the electric field strength formula as the basis for determining the size of the annular positive electrode 21 ensures that there is a 1cm gap of normal skin between the annular positive electrode 21 and the edge of the wound, allowing the annular positive electrode 21 to rest on healthy skin tissue while maintaining an effective electric field strength acting on the wound.

[0034] In this embodiment, the method further includes: when the wound consists of multiple discrete wounds, steps S1-S4 are executed separately to generate multiple electrode patterns, which are then projected onto the bottom surface of the dressing body 1 in step S5. By generating multiple electrode patterns at once for multiple independent wounds, the operator can complete the application of all electrodes in one go, significantly improving treatment efficiency.

[0035] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. An electric field dressing based on ranging imaging and projection positioning, characterized in that, include: The dressing body (1) is used to be applied to the wound; The electrode sheet (2), including a ring-shaped positive electrode (21) and a dot-shaped negative electrode (22), is attached to the bottom of the dressing body (1); Imaging device used to acquire images of the wound and obtain image dimensions; A ranging device is used to measure the vertical distance between the imaging device and the wound. The image processing module calculates the actual size of the wound, determines the size of the annular positive electrode (21), and generates a layout pattern based on the size of the acquired image. A projection device is used to project the layout pattern onto the bottom surface of the dressing body (1) to form a projection mark; The annular positive electrode (21) is attached to the bottom surface of the dressing body (1) according to the projection mark, and the dotted negative electrode (22) is attached to the bottom surface of the dressing body (1) at the center of the annular positive electrode (21).

2. The electric field dressing based on ranging imaging and projection positioning according to claim 1, characterized in that: The imaging device, ranging device, and projection device are integrated into the same handheld device, which includes a height adjustment bracket and a level.

3. The electric field dressing based on ranging imaging and projection positioning according to claim 2, characterized in that: It also includes a control unit, which is connected to the imaging device, the ranging device and the projection device, and is used to control the coordinated operation of each device.

4. The electric field dressing based on ranging imaging and projection positioning according to claim 3, characterized in that: The control unit also includes a storage module for storing wound images, electrode layout patterns, and treatment parameters to form a treatment record.

5. The electric field dressing based on ranging imaging and projection positioning according to claim 4, characterized in that: The dressing body (1) has a transparent release film (3) at the bottom, and the projection device projects the electrode layout pattern onto the transparent release film (3).

6. The electric field dressing based on ranging imaging and projection positioning according to claim 5, characterized in that: The dressing body (1) is covered with a flexible sealing film (4) for sealing and fixing the dressing body (1) to the wound.

7. The electric field dressing based on ranging imaging and projection positioning according to claim 6, characterized in that: The flexible sealing membrane (4) is provided with a negative pressure component (5) that communicates with the dressing body (1). The negative pressure component (5) includes a negative pressure suction cup (51) and a negative pressure drainage tube (52). The negative pressure suction cup (51) is provided on the flexible sealing membrane (4) and communicates with the dressing body (1). One end of the negative pressure drainage tube (52) is connected to the negative pressure suction cup (51), and the other end is connected to an external negative pressure device.

8. A method of using an electric field dressing based on ranging imaging and projection positioning according to any one of claims 1 to 7, characterized in that: Includes the following steps: S1: Acquire wound images and measure image dimensions using an imaging device; S2: Obtain the vertical height H between the imaging device and the wound using a ranging device; S3: The image processing module calculates the actual size of the wound using the diagonal triangle algorithm based on the acquired image size, and determines the size of the annular positive electrode (21) based on the actual size; S4: The imaging device projects a pattern containing the size of the annular positive electrode (21) at a vertical height H onto the bottom of the dressing body (1) to form a projection mark. S5: According to the projection mark, attach the electrode sheet (2) to the bottom of the dressing body (1), and then apply the dressing body (1) to the wound.

9. The method of using the electric field dressing based on ranging imaging and projection positioning according to claim 8, characterized in that: In step S3, the diameter D of the annular positive electrode (21) is determined according to the electric field strength formula: E=U / d, where D=d+1cm.

10. The method of using the electric field dressing based on ranging imaging and projection positioning according to claim 9, characterized in that: The method further includes: when the wound is multiple discrete wounds, steps S1-S4 are executed respectively to generate multiple electrode patterns, and in step S5, the patterns are projected onto the bottom surface of the dressing body (1) at once.

Images