Burn plastic debridement and healing promoting device with subarea negative pressure adjustment function and use method of burn plastic debridement and healing promoting device

Abstract

The invention discloses a burn plastic debridement and healing promoting device with a partitioned negative pressure adjustment function and a using method, and belongs to the field of burn treatment. The burn plastic debridement healing promoting device with the partitioned negative pressure adjustment function comprises a collecting box, a second movable base and a first movable base are arranged on the two sides of the interior of the collecting box respectively, and a second material collecting barrel with four grooves is arranged at the upper end of the second movable base. The negative-pressure wound debridement and healing promoting device solves the problem that when a negative-pressure wound debridement and healing promoting device for burn and plastic surgery is used, liquid flowing out of a wound of a patient can be continuously sucked out and collected, and after unified collection, judgment of medical staff on the wound healing degree is affected. Liquid flowing at the wound position can be adsorbed and directly falls into the rotatable second material collecting barrel, and the liquid flowing out of the wound position at different time periods can be collected by rotating the four evenly-distributed grooves in the second material collecting barrel.

Description

Technical Field

[0001] This invention relates to the field of burn treatment, specifically to a burn repair and debridement device with zoned negative pressure regulation and its usage method. Background Technology

[0002] The negative pressure burn and plastic surgery debridement and healing device is a medical device that promotes blood circulation and healing of burn and plastic surgery wounds through dynamic negative pressure technology. The device uses a controllable negative pressure environment to remove wound exudate, necrotic tissue and bacteria, reduce the risk of infection, reduce the wound area, accelerate the healing process, improve treatment effect and patient comfort, and supports repeated application and removal of dressings.

[0003] Chinese patent CN119367626B discloses a negative pressure wound debridement and healing device for burns and plastic surgery, including a dressing, a double-shaped connecting assembly, and a negative pressure suction unit. The negative pressure suction unit includes a base, a hollow column, a rotary drive mechanism, and a negative pressure machine. The base has an installation cavity. When the negative pressure machine is working, it sequentially draws air from each groove on the dressing to form a negative pressure, so that the negative pressure area enters a negative pressure state, promoting blood circulation in the wound. During this process, since the negative pressure area enters the negative pressure state sequentially, it can play a dynamic massage role by pushing blood out of the wound as the grooves enter the negative pressure state sequentially.

[0004] When using the aforementioned patented negative pressure wound debridement and healing device for burns and plastic surgery, it continuously sucks out and collects the fluid flowing from the patient's wound. After collection, the amount and state of the fluid cannot be determined, which affects medical staff's assessment of the degree of wound healing. Summary of the Invention

[0005] The purpose of this invention is to provide a burn and plastic surgery debridement and healing promotion device and its usage method with zoned negative pressure regulation. The fluid flowing at the wound site is absorbed and falls directly into a rotatable second collection cylinder. Rotating the second collection cylinder allows four evenly distributed grooves to collect the fluid flowing out of the wound site at different times, so that the wound fluid at different times can be collected separately. This makes it easier for medical staff to judge the wound healing status based on the fluid collected in the second collection cylinder, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a burn and plastic surgery debridement and healing promotion device with zoned negative pressure regulation, comprising a collection box, wherein a second movable base and a first movable base are respectively arranged on both sides inside the collection box, a second collection cylinder with four grooves is arranged on the upper end of the second movable base, a first transmission disc rotatably connected to the second movable base is arranged on the lower end of the second collection cylinder, a first collection cylinder is arranged on the upper end of the first movable base, and a threaded rod passes through the first movable base and the second movable base, a sponge conforming to the wound is arranged at the rear end of the collection box, a first medical sterile dressing conforming to the skin is wrapped around the upper end of the outside of the sponge, and four second suction cups are arranged around the first medical sterile dressing. The rotation of the second collection cylinder can independently collect foreign matter generated by the absorbed skin, and independent collection can facilitate subsequent removal and inspection.

[0007] Preferably, the exterior of the second suction cup is attached to the first medical sterile dressing via a third medical sterile dressing. One end of the second suction cup is provided with a second air guide tube, and one end of each of the four second air guide tubes is connected by a third air guide tube. The second suction cup on the side is fixed by attaching and attaching with the third medical sterile dressing, and the negative pressure area cylinder can be replenished with gas from the position of the second suction cup.

[0008] Preferably, a filter cylinder is provided at one end of the third air guide tube, a fourth air guide tube is provided through the lower end of the filter cylinder, and an adjustment valve is provided between the second air guide tube and the third air guide tube.

[0009] Preferably, the control method for the regulating valve includes: Based on the negative pressure regulation knowledge base, extract the regulation basis set; Based on historical negative pressure regulation process records, the semantic set of regulation criteria extracted from wound images is obtained from the regulation criteria set; Based on the extracted semantic set, the extraction relationship extracted from the wound image is obtained as the adjustment criterion; Based on the extraction relationship corresponding to each adjustment basis in the adjustment basis set, an adjustment basis extraction template is constructed; Obtain images of the wound location before cleaning; Based on the adjustment criteria, the template is extracted to extract adjustment features from the captured image, thereby obtaining the target adjustment feature set. Based on the target regulation feature set and the negative pressure regulation knowledge base, the recommended pressure distribution for the wound area is determined; Analyze the recommendation pressure distribution to obtain the recommendation pressure value set for each target partition; Using the recommended pressure value set as the sub-simulation target of the corresponding local negative pressure space of each target zone, local fluid simulation is performed in the local negative pressure space to determine the initial control parameters of the regulating valve corresponding to each target zone; Based on the initial control parameters, a global fluid simulation is performed in the negative pressure space to determine the sub-simulation results of each local negative pressure space and the fluid characteristics between local negative pressure spaces. The initial control parameters are fine-tuned globally based on the deviation between the sub-simulation results and the sub-simulation objective, and the fluid characteristics associated with the sub-simulation results. Determine the optimal control parameters based on the global fluid simulation results after global fine-tuning; The control valve is controlled accordingly based on the optimal control parameters.

[0010] Preferably, the lower end of the filter cylinder stores a filtration liquid, and a heat-conducting pipe is recessed in the middle of the lower end of the filter cylinder. A heating rod is installed inside the heat-conducting pipe. The filtration is carried out through the liquid inside the filter cylinder, while the heat-conducting pipe can heat the filtered gas.

[0011] Preferably, a connecting block is welded to the lower end of the second collecting cylinder, and the upper end of the first transmission disc is connected to the lower end of the second collecting cylinder via a slot. The second collecting cylinder can be slidably installed onto the upper end of the first transmission disc through the connecting block.

[0012] Preferably, the front end of the collection box is provided with a protective cover, and the two sides inside the protective cover are provided with connecting rods. Nuts are provided on the outside of the connecting rods. The protective cover is bolted to the side of the collection box, which can wrap and protect the second collection cylinder and the first collection cylinder inside.

[0013] Preferably, a main unit is provided on one side of the outer wall of the collection box, and a wound healing system is built into the main unit. The wound healing system consists of a timing module, a drive module, a position adjustment module, a massage module, and a heating module. The timing module is used to keep track of time when the device is running, and the timing is used as the start signal for the drive module. The drive module is used to drive the second collection cylinder, so that the motor at the lower end of the second collection cylinder rotates at regular intervals to switch the position of the second collection cylinder; The position adjustment module is used to drive the threaded rod to rotate and adjust the positions of the second and first collection cylinders; The massage module is used to adjust the regulating valve according to the settings. By adjusting the regulating valve, the flow into the negative pressure area is controlled, and the pressure change at different negative pressure positions realizes the massage of the wound location. The heating module is used to drive the heating rod inside the filter cartridge, thereby heating the liquid inside the filter cartridge.

[0014] The zoned negative pressure regulating burn and plastic surgery debridement and healing promotion device also performs the following operations: Analysis of collected liquids from multiple collection periods in the second collection cylinder generates treatment recommendations, including: The timing module based on the host determines multiple liquid collection periods; Multi-parameter analysis was performed on the collected liquid in the second collection cylinder during each liquid collection period to obtain a time-series feature vector set. Construct a time series rate of change matrix based on the time series feature vector set; Based on the healing status assessment model, the wound healing index is calculated according to the time-series rate of change matrix; The wound healing status category is determined based on the wound healing index and the wound healing status classification standard; Treatment suggestions are generated based on the wound healing status category and output to the host computer's display interface.

[0015] The method of using the zoned negative pressure adjustable burn and plastic surgery debridement and healing promotion device includes the following steps: Step 1: Apply the sponge to the wound location and attach it to the skin surface with the first medical sterile dressing. The first suction cup, corresponding to the second ventilation hole, is attached to the surface of the first medical sterile dressing with the second medical sterile dressing. Step 2: The second suction cup is attached to the surface of the first sterile medical dressing by the third sterile medical dressing corresponding to the first vent hole, and the second air guide tube connected to one end of the second suction cup is connected by the third air guide tube. Step 3: One of the air pumps is connected to the first air guide tube and the second liquid guide tube and the first liquid guide tube extract the wound location covered by the sponge. The other air pump extracts external gas and sends it into the filter cylinder through the fourth air guide tube. After being filtered by the liquid inside the filter cylinder, the gas is transmitted through the third air guide tube. After the massage module adjusts the opening strength of the regulating valve, the gas inside the third air guide tube is supplemented to the wound location covered by the sponge by the second air guide tube and the second suction cup. Step 4: After the foreign liquid generated by the wound growth is sucked up, it is transferred to the inside of the collection box through the second liquid guide tube and falls into the inside of the second collection cylinder. The timing module starts the drive module at the set time. The drive module gives a start signal to the motor at the lower end of the second transmission disk. The second transmission disk drives the first transmission disk to rotate through the synchronous belt. Step 5: The heating rod is activated and heats the heat pipe. The heat pipe heats the liquid inside the filter cartridge, so that the gas added to the sponge can increase the temperature at the wound site. Step 6: Adjust the positions of the second collection cylinder and the first collection cylinder laterally. The saline solution passes through the first sterile medical dressing and is embedded in the reserved tube. The saline solution can come into contact with the wound. The saline solution is absorbed and enters the collection box along the first and second guide tubes, so that the saline solution falls into the first collection cylinder after the position is adjusted. Step 7: Medical staff can rotate and remove the nut on the outside of the connecting rod, remove the protective cover and expose the second collection cylinder, and directly slide the second collection cylinder off from the top of the first transmission plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. When the present invention is applied to the wound and forms negative pressure to complete the treatment, the fluid flowing at the wound site is adsorbed and falls directly into the rotatable second collection cylinder. The second collection cylinder can be rotated by the lower motor. The four evenly distributed grooves inside the rotating second collection cylinder can collect the fluid flowing out of the wound site at different times, so that the wound fluid at different times can be collected separately. This makes it easier for medical staff to judge the wound healing status based on the fluid collected in the second collection cylinder. The fluid flowing out of the skin surface can help medical staff formulate subsequent treatment plans, so that the treatment plan is tailored to the current condition of the patient's wound.

[0017] 2. In this invention, after the first suction cup provides a stable and uniform adsorption force, the four second suction cup positions provide different levels of gas replenishment through the opening degree of the regulating valve. When the gas replenishment forms zones with different negative pressures, the gas flowing in the second air guide tube is filtered by the liquid stored inside the filter cartridge. At the same time, the heating rod heats the liquid used for filtration, so that the liquid can simultaneously filter and heat the gas. This avoids the replenishment of low-temperature gas from contacting the wound site. Through contact with gas at a certain temperature, the capillaries at the wound site dilate, increasing blood flow. At the same time, metabolic waste is cleared more quickly. Furthermore, at an appropriate temperature, the proliferation and migration rate of repair cells such as fibroblasts and epithelial cells will accelerate, and collagen synthesis will also increase, which can improve the oxygenation of the wound and create a more favorable microenvironment for repair. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of the present invention; Figure 2 This is a cross-sectional view of the internal structure of the filter cartridge of the present invention; Figure 3 This is an exploded view of the sponge installation location of the present invention; Figure 4 This is a schematic diagram of the installation trajectory of the protective cover of the present invention; Figure 5 This is a schematic diagram of the threaded rod transmission structure of the present invention; Figure 6 This is a schematic diagram of the wound healing system of the present invention.

[0019] In the diagram: 1. Collection box; 2. Main unit; 3. First sterile medical dressing; 4. Second sterile medical dressing; 5. First suction cup; 6. First liquid guide tube; 7. First air guide tube; 8. Third sterile medical dressing; 9. Second suction cup; 10. Second air guide tube; 11. Adjusting valve; 12. Third air guide tube; 14. Filter cartridge; 15. Fourth air guide tube; 16. Heat conduction tube; 17. Heating rod; 18. Sponge; 19. Reserved tube; 20. First vent; 21. Second vent; 22. Protective cover; 23. Connecting rod; 24. First collection cylinder; 25. Second collection cylinder; 26. First movable base; 27. First transmission disc; 28. Second transmission disc; 29. ​​Second movable base; 30. Connecting block; 31. Synchronous belt; 32. Threaded rod; 34. Second liquid guide tube. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments.

[0021] like Figure 1 , Figure 4 and Figure 5 As shown, a burn and plastic surgery debridement and healing device with zoned negative pressure regulation in this embodiment includes a collection box 1. A second movable base 29 is provided on one side of the inside of the collection box 1, and a first movable base 26 is provided on the other side of the inside of the collection box 1. A second collection cylinder 25 is provided at the upper end of the second movable base 29. The second collection cylinder 25 can receive wound fluid foreign objects generated during the adsorption process.

[0022] The second collection cylinder 25 has four grooves evenly distributed around its interior. These grooves collect and store foreign objects from wounds at different times as the second collection cylinder 25 rotates. To drive the second collection cylinder 25, a first transmission disc 27 is provided at its lower end. A second transmission disc 28 is provided on one side of the first transmission disc 27. Both the second transmission disc 28 and the first transmission disc 27 are rotatably connected to the inside of the second movable base 29. The second transmission disc 28 and the first transmission disc 27 are connected by a synchronous belt 31. Supported by the second movable base 29, the transmission by the synchronous belt 31 allows the second collection cylinder 25 to rotate when needed, thus adjusting the storage position.

[0023] To facilitate wound cleaning and collect saline solution separately, preventing dilution of the wound fluid, a first collection cylinder 24 is provided at the upper end of the first movable base 26. A threaded rod 32 passes through the first movable base 26 and the second movable base 29, and the threaded rod 32 is threaded into both the second movable base 29 and the first movable base 26. Rotation of the threaded rod 32 can laterally move the first movable base 26 and the second movable base 29, adjusting the position of the second collection cylinder 25 and the first collection cylinder 24. When delivering saline solution, the saline solution can be filled into the first collection cylinder 24, preventing the saline solution from mixing with the wound fluid.

[0024] On the other hand, in order to facilitate the disassembly and cleaning of the first collecting cylinder 24 and the second collecting cylinder 25, a connecting block 30 is provided at the lower end of the second collecting cylinder 25, and the connecting block 30 is welded and fixed to the lower end of the second collecting cylinder 25. The upper end of the first transmission disc 27 is connected to the lower end of the second collecting cylinder 25 by a slot. The connecting block 30 is rectangular. The rectangular connecting block 30 facilitates the direct sliding installation of the second collecting cylinder 25 onto the upper end of the first transmission disc 27. The lower end of the first collecting cylinder 24 is slidably connected to the upper end of the first movable base 26. The first collecting cylinder 24 can be directly slidably installed into the interior of the first movable base 26.

[0025] Furthermore, a protective cover 22 is provided at the front end of the collection box 1. Connecting rods 23 are provided through both sides inside the protective cover 22. Nuts are provided on the outside of the two connecting rods 23. By rotating the nuts on the outside of the connecting rods 23, the protective cover 22 can be easily fixed, and the second collection cylinder 25 and the first collection cylinder 24 inside can be easily fixed.

[0026] like Figure 3 As shown, the rear end of the collection box 1 is provided with a sponge 18 that fits the wound. The upper part of the outside of the sponge 18 is wrapped with a first medical sterile dressing 3 that fits the skin. The upper part of the first medical sterile dressing 3 is provided with a first suction cup 5. Four second suction cups 9 are arranged around the first medical sterile dressing 3. The four second suction cups 9 are used to replenish gas to the area covered by the sponge 18, while the first suction cups 5 are used to remove the sponge 18, thereby achieving negative pressure through removal.

[0027] It is worth mentioning that the first sterile medical dressing 3 is provided with a second vent 21 corresponding to the first suction cup 5, and a first vent 20 is provided between the first sterile medical dressing 3 and the second suction cup 9. The first vent 20 and the second vent 21 are cut out on the surface of the first sterile medical dressing 3 with scissors during installation. The outside of the first suction cup 5 is attached to the first sterile medical dressing 3 through the second sterile medical dressing 4, and the outside of the second suction cup 9 is attached to the first sterile medical dressing 3 through the third sterile medical dressing 8. The attachment of the first sterile medical dressing 3, the second sterile medical dressing 4 and the third sterile medical dressing 8 can improve the sealing degree, facilitate the extraction of gas and the formation of a negative pressure area.

[0028] In this embodiment, in order to collect the extracted skin fluid, a first liquid guide tube 6 is provided at the upper end of the first suction cup 5, and a second liquid guide tube 34 is provided at the upper end of the collection box 1. The second liquid guide tube 34 and the first liquid guide tube 6 are sealed together. A first air guide tube 7 is provided on one side of the collection box 1. After the first air guide tube 7 is connected to a fan, when an adsorption force is generated, the gas is drawn from the first suction cup 5 and the sponge 18 by sequentially connecting the collection box 1, the second liquid guide tube 34 and the first liquid guide tube 6.

[0029] When adjusting the negative pressure of the partition, a second air guide tube 10 is provided at one end of the second suction cup 9, and a third air guide tube 12 is provided at one end of each of the four second air guide tubes 10 for connection, such as... Figure 2 As shown, a filter cylinder 14 is provided at one end of the third air guide pipe 12. A fourth air guide pipe 15 is provided through the lower end of the filter cylinder 14. After the gas is transmitted into the filter cylinder 14 through the fourth air guide pipe 15, it is filtered by the filter cylinder 14. The gas is then transmitted by the third air guide pipe 12 and diverted and transmitted by the second air guide pipe 10. In order to achieve different pressures in different areas, a regulating valve 11 is provided between the second air guide pipe 10 and the third air guide pipe 12. The amount of gas transmitted from the third air guide pipe 12 to the second air guide pipe 10 can be adjusted by adjusting the opening state of the regulating valve 11, and the negative pressure state at different positions can be controlled.

[0030] To facilitate the filtration and heating of the gas transmitted through the fourth gas guide tube 15, the lower end of the filter cylinder 14 stores a filtration liquid. A heat-conducting pipe 16 is recessed in the middle of the lower end of the filter cylinder 14, and a heating rod 17 is installed inside the heat-conducting pipe 16. After the heat-conducting pipe 16 is heated by the heating rod 17, the heat from the heat-conducting pipe 16 can heat the liquid reserved inside the filter cylinder 14, so that the liquid can directly heat the gas in contact with it.

[0031] To facilitate the subsequent injection of saline solution, a pre-drained tube 19 is provided inside the sponge 18. The saline solution can be injected into the sponge 18 by puncturing the first sterile medical dressing 3 through the tube.

[0032] The main unit 2 is installed on one side of the outer wall of the collection box 1, such as... Figure 6 As shown, the main unit 2 has a built-in wound healing system, which consists of a timing module, a drive module, a position adjustment module, a massage module, and a heating module. The timing module is used to keep track of time during device operation. The timing signal is used as the start signal for the drive module. When the time reaches the value set by the timing module, the timing module sends a start signal to the drive module, realizing the automation of the entire system operation. It eliminates the need for frequent manual intervention by medical staff, ensuring that treatment and monitoring actions are performed at precise time intervals, making the data comparable and the treatment consistent. Different time strategies can be set according to different healing stages.

[0033] The drive module is used to drive the second collection cylinder 25, causing the motor at the lower end of the second collection cylinder 25 to rotate at regular intervals and switch the position of the second collection cylinder 25. This facilitates understanding the wound healing status by referring to the fluid produced by the skin that has been collected. After receiving the start signal from the timing module, the drive module drives the motor to rotate once according to the set rotation direction and rotation angle. This provides the clinic with wound exudate samples arranged in a time sequence. By comparing the changes in color, turbidity, and amount, it becomes an objective basis for judging the healing trend or early signs of infection, and physically prevents the mixing of fluids from different time periods.

[0034] The position adjustment module is used to drive the threaded rod 32 to rotate and adjust the position of the second collection cylinder 25 and the first collection cylinder 24. This avoids the mixing of saline and skin fluids, which could affect subsequent judgment. The threaded rod drive can achieve high-precision linear displacement, ensuring accurate container docking and preventing liquid splashing.

[0035] The massage module is used to adjust the regulating valve 11 according to the settings. The adjustment of the regulating valve 11 controls the flow into the negative pressure area. The pressure change at different negative pressure positions realizes the massage of the wound position. By simulating artificial massage, it promotes blood circulation around the wound, reduces edema, accelerates the removal of metabolic waste, and the dynamic pressure can prevent the new granulation tissue from adhering to the dressing too early.

[0036] The heating module is used to drive the heating rod 17 inside the filter cylinder 14. The heating rod 17 heats the liquid inside the filter cylinder 14. A certain amount of heat can improve the wound healing speed. The warm humidified gas can maintain the temperature and humidity of the wound microenvironment, prevent cells from drying and dying, and significantly improve the healing speed.

[0037] Working principle: The sponge 18 is applied to the wound location and then adhered to the skin surface by the first sterile medical dressing 3. The first sterile medical dressing 3 is cut with scissors to form a second vent 21 and a first vent 20 on its surface. The first suction cup 5, corresponding to the second vent 21, is attached to the surface of the first sterile medical dressing 3 by the second sterile medical dressing 4. The second suction cup 9, corresponding to the first vent 20, is attached to the surface of the first sterile medical dressing 3 by the third sterile medical dressing 8. The second air guide tube 10, connected to one end of the second suction cup 9, is connected to the third air guide tube 12. The filter cylinder 14 is pre-filled with filtered liquid. One end of the third air guide tube 12 is inserted into the filter cylinder 14. The second collection cylinder 25 is slidably installed via the connecting block 30 at its lower end. At the upper end of the first transmission disc 27, one of the suction pumps is connected to the first air guide pipe 7 and the second liquid guide pipe 34 and the first liquid guide pipe 6 extract the wound position covered by the sponge 18. At the same time, another suction pump extracts external gas and sends it into the filter cylinder 14 through the fourth air guide pipe 15. After being filtered by the liquid inside the filter cylinder 14, the gas is transmitted through the third air guide pipe 12. After the opening intensity of the regulating valve 11 is adjusted by the massage module, the gas inside the third air guide pipe 12 is supplemented to the wound position covered by the sponge 18 by the second air guide pipe 10 and the second suction cup 9. The liquid foreign matter generated during the wound growth process is sucked up and then transmitted to the collection box 1 through the second liquid guide pipe 34 and falls into the second collection cylinder 25. The process continues at the position of the second liquid guide pipe 34. After extraction from the wound site, the timing module starts the drive module at a set time. The drive module sends a start signal to the motor at the lower end of the second transmission disc 28. The second transmission disc 28 drives the first transmission disc 27 to rotate via the synchronous belt 31. The rotation of the first transmission disc 27 adjusts the angle of the upper second collection cylinder 25, allowing the adsorbed liquid to be stored in different positions within the second collection cylinder 25. When gas is supplied to the wound site through the third gas guide tube 12, the heating rod 17 is activated and heats the position of the heat conduction tube 16. The heat conduction tube 16 heats the liquid inside the filter cylinder 14, thereby heating the liquid transported inside the third gas guide tube 12. This allows the gas supplied to the sponge 18 to raise the temperature at the wound site, facilitating the injection of saline solution. When the fluid is applied, the rotation of the threaded rod 32 laterally moves the second movable base 29 and the first movable base 26 laterally, adjusting the positions of the second collection cylinder 25 and the first collection cylinder 24. The saline solution penetrates the first sterile medical dressing 3 and is embedded in the pre-drilled tube 19, allowing the saline solution to contact the wound. The saline solution is absorbed and flows along the first and second guide tubes 6 and 34 into the collection box 1, ultimately falling into the adjusted first collection cylinder 24. Medical personnel can then rotate and remove the nut on the connecting rod 23, remove the protective cover 22 to expose the second collection cylinder 25, and slide it off directly from the top of the first transmission disc 27. Medical personnel can then inspect the collected fluid inside the second collection cylinder 25.It can also directly clean the second feed cylinder 25.

[0038] In one embodiment, the control method for the regulating valve 11 includes: Based on the negative pressure regulation knowledge base, extract the regulation basis set.

[0039] In this embodiment, the negative pressure regulation knowledge base is a database storing negative pressure therapy rules, including knowledge such as one-to-one correspondence of wound morphology, negative pressure parameters, and healing effects. The regulation basis set is a collection of criteria extracted from the negative pressure regulation knowledge base for determining the optimal negative pressure parameters, such as wound area and degree of infection.

[0040] Based on historical records of negative pressure regulation processes, the semantic set of regulation criteria extracted from wound images is obtained from the regulation criteria set.

[0041] In this embodiment, the historical negative pressure adjustment process record is a record of the process by which doctors adjust negative pressure based on wound morphology in the past, including: the semantics of the wound morphology described by the doctor and the negative pressure adjustment plan formulated by the doctor. The extracted semantic set is a set of semantics extracted from the wound image as the basis for adjustment. For example, if the adjustment basis is the degree of infection, then the extracted semantic set is a set of semantics related to the degree of wound infection described by the doctor.

[0042] Based on the extracted semantic set, the extraction relationship extracted from the wound image is obtained as the adjustment basis.

[0043] In this embodiment, the extracted relationship is: the relationship that determines the corresponding adjustment basis based on the wound image description, for example: the relationship that determines the degree of infection based on the wound color and humidity.

[0044] Based on the extraction relationship corresponding to each adjustment basis in the adjustment basis set, an adjustment basis extraction template is constructed.

[0045] In this embodiment, the adjustment basis extraction template is a standardized framework for extracting adjustment basis from wound images, which is used to automatically extract negative pressure adjustment basis such as wound area and degree of infection from wound images.

[0046] To obtain images of the wound location before cleaning.

[0047] In this embodiment, the image is a pre-taken image of the wound location before debridement.

[0048] Based on the adjustment criteria, the template is extracted to extract adjustment features from the captured image, thereby obtaining the target adjustment feature set.

[0049] In this embodiment, the target adjustment feature set is a set of target adjustment features extracted from the captured image according to the adjustment basis extraction template. The target adjustment features are the adjustment features actually extracted from the captured image. For example, the necrotic tissue area is 16 cm², and the exudate grade is moderate.

[0050] According to the target adjustment feature set and the negative pressure adjustment knowledge base, determine the recommended pressure distribution in the wound area.

[0051] In this embodiment, the recommended pressure distribution is: an ideal negative pressure value distribution map calculated for different partitions of the wound.

[0052] Analyze the recommended pressure distribution to obtain the recommended pressure value set for each target partition.

[0053] In this embodiment, each target partition is: the wound partition controlled by the negative pressure control partition corresponding to each second air duct 10. The recommended pressure value set is: a set of specific negative pressure values corresponding to each point position in the target partition.

[0054] Taking the recommended pressure value set as the sub-simulation target corresponding to the local negative pressure space of each target partition, perform local fluid simulation in the local negative pressure space to determine the initial control parameters of the control valve corresponding to each target partition.

[0055] In this embodiment, the local negative pressure space is four local spaces evenly divided in the negative pressure space in the medical sterile dressing 3 in a "field" shape, and each local negative pressure space corresponds to a second air duct 10. When determining the initial control parameters of the control valve 11 corresponding to each target partition, first determine the preselected initial control parameters (all control parameters of the control valve 11), and use the preselected initial control parameter with the smallest difference between the corresponding sub-simulation result and the sub-simulation target as the initial control parameter.

[0056] According to the initial control parameters, perform global fluid simulation in the negative pressure space to determine the fluid characteristics between the sub-simulation results of each local negative pressure space and the local negative pressure space.

[0057] In this embodiment, the sub-simulation result is the negative pressure simulation result of each local negative pressure space when performing global fluid simulation of each local negative pressure space based on the initial control parameters. The fluid characteristics between the local negative pressure spaces are the pressure uniformity and the air flow velocity difference between the local negative pressure spaces.

[0058] Perform global fine-tuning of the initial control parameters according to the deviation value between the sub-simulation result and the sub-simulation target and the fluid characteristics associated with the sub-simulation result.

[0059] In this embodiment, the deviation value is the negative pressure deviation at each point between the sub-simulation result and the sub-simulation target. The fluid characteristics associated with the sub-simulation result refer to the fluid characteristics between the local negative pressure space corresponding to the sub-simulation result and its adjacent local negative pressure spaces. Global fine-tuning refers to slightly optimizing all regulating valve parameters based on the deviation value and the associated fluid characteristics to reduce the overall error. In actual devices, all zones are connected through air paths, resulting in mutual interference (e.g., a high negative pressure zone may "steal" airflow from an adjacent low negative pressure zone, leading to insufficient pressure in the adjacent zone). Therefore, the fluid characteristics reveal the root cause of the deviation (e.g., zone A has excessive suction, causing unstable pressure in zone B). Thus, it is necessary to combine the deviation value and the associated fluid characteristics to optimize the regulating valve parameters. Moreover, during optimization, it is not simply a matter of correcting the error of a single zone, but rather a comprehensive optimization of all regulating valve parameters to minimize the pressure deviation of each zone and minimize harmful fluid characteristics (such as severe pressure fluctuations) in the entire system.

[0060] The optimal control parameters are determined based on the global fluid simulation results after global fine-tuning.

[0061] In this embodiment, the optimal control parameter refers to the final setting of the regulating valve 11 after fine-tuning and global simulation verification.

[0062] The regulating valve 11 is controlled accordingly based on the optimal control parameters.

[0063] The working principle and beneficial effects of the above technical solution are as follows: This invention extracts a set of adjustment criteria from a negative pressure regulation knowledge base; it introduces historical negative pressure regulation process records, and extracts semantic sets from wound images based on the adjustment criteria therein to obtain the extraction relationships of the adjustment criteria from the wound images; it summarizes all extraction relationships to construct an adjustment criteria extraction template, which can automatically analyze and identify the adjustment criteria from wound images, making it more intelligent.

[0064] The adjustment criteria extraction template is applied to the captured image to extract the target adjustment feature set; based on the target adjustment feature set and the negative pressure adjustment knowledge base, the recommended pressure distribution of the wound area is automatically matched and determined.

[0065] After obtaining the recommended pressure distribution, a simulation can be performed to determine the appropriate control valve parameters. During the simulation, in order to improve the efficiency of determining the control valve parameters, the recommended pressure value set of each target zone is obtained first, and the zone simulation of each target zone is performed to obtain the initial control parameters of the control valve 11.

[0066] However, in actual devices, all zones are connected via air paths, leading to mutual interference. Therefore, when performing global fluid simulation within the negative pressure space based on initial control parameters, deviations will occur. Fluid characteristics reveal the root cause of these deviations. Therefore, based on the deviations and associated fluid characteristics, all regulating valve parameters are slightly optimized to reduce overall error. This significantly improves the efficiency of determining optimal control parameters and enhances the accuracy of negative pressure control.

[0067] The burn debridement and healing promotion device with zoned negative pressure regulation provided in this embodiment of the invention also performs the following operations: Analysis of collected liquids from multiple collection periods in the second collection cylinder 25 generates treatment recommendations, including: Based on the timing module of host 2, multiple liquid collection periods are determined. ,in, The total number of time periods greater than or equal to 4. For the first The duration of each collection period.

[0068] Multi-parameter analysis was performed on the collected liquid in the second collection cylinder 25 during each liquid collection period to obtain the time-series feature vector set. ,in, , This represents the transpose operation; The volume of the liquid is measured in milliliters, and is measured by a liquid level sensor inside the groove. The turbidity value is expressed in NTU and is calculated based on the ratio of transmitted light intensity. pH value, measured using a miniature pH electrode; The color index is calculated through RGB image analysis. ,in , , These represent the average values ​​of the red, green, and blue channels of the liquid image, respectively.

[0069] Construct a time-series rate of change matrix based on the time-series feature vector set. ; where the matrix elements of the time-series rate of change matrix Indicates the first The 24-hour standardized rate of change of a feature between adjacent time periods.

[0070] Based on the healing status assessment model, the wound healing index is calculated according to the time-series rate of change matrix. : ; in, Use the Sigmoid activation function; for transpose, This is the model weight vector; For bias terms; For the time series rate of change matrix The flattening operation. The training method for the healing status assessment model is as follows: supervised learning is performed using labeled clinical datasets (such as the temporal characteristics of historical patients' wound exudate and corresponding expert assessments of healing status), and gradient descent-type optimization algorithms are used to jointly optimize the weight vector. and bias terms The goal is to make the wound healing index output by the model as close as possible to the true label.

[0071] The wound healing status category is determined based on the wound healing index and the wound healing status classification standard.

[0072] The wound healing status classification standard is a preset standard for determining the wound healing status category based on the wound healing index, for example: The wound healing status is classified as infection worsening; The wound healing status is classified as delayed healing; The wound healing status is classified as normal healing; The wound healing status is classified as accelerated healing.

[0073] Treatment recommendations are generated based on the wound healing status category and output to the display interface of host 2; the treatment recommendations include one or more of the following: negative pressure parameter adjustment recommendations, debridement frequency recommendations, and antibiotic use recommendations.

[0074] The working principle and beneficial effects of the above technical solution are as follows: This invention provides an objective assessment of healing through time-series data analysis, overcoming the limitations of traditional methods that rely on subjective observation and experience-based judgment, and providing data support for precision medicine. A specific example is given below: Background: The patient suffered second-degree burns of approximately 15 cm² and was treated using this device. The main unit 2 is set to have 4 collection periods, and the groove position of the second collection cylinder 25 is switched every 6 hours.

[0075] Period 1 (0-6 hours): Liquid is collected in groove 1 of the second collection cylinder 25, volume... turbidity pH value Color index .

[0076] Period 2 (6-12 hours): The second collecting cylinder 25 groove 2 collects liquid, volume turbidity pH value Color index .

[0077] Period 3 (12-18 hours): Liquid is collected in groove 3 of the second collection cylinder 25, volume... turbidity pH value Color index .

[0078] Period 4 (18-24 hours): Liquid is collected in groove 4 of the second collection cylinder 25, volume... turbidity pH value Color index .

[0079] Constructing the time series rate of change matrix ; The time series rate of change matrix Flattened into a 12-dimensional vector; Apply a pre-trained healing status assessment model (weight vector) and bias (Based on training with 500 clinical cases) Calculate the linear output as The wound healing index was calculated using the Sigmoid activation function. The wound healing status was determined to be normal healing.

[0080] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0081] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A burn and plastic surgery debridement and healing promotion device with zoned negative pressure regulation, comprising a collection box (1), characterized in that, The collection box (1) has a second movable base (29) and a first movable base (26) on its two sides. The upper end of the second movable base (29) is provided with a second collection cylinder (25) with four grooves. The lower end of the second collection cylinder (25) is provided with a first transmission disc (27) rotatably connected to the second movable base (29). The upper end of the first movable base (26) is provided with a first collection cylinder (24). The first movable base (26) and the second movable base (29) are connected by a threaded rod (32). The rear end of the collection box (1) is provided with a sponge (18) that fits the wound. The upper end of the outside of the sponge (18) is wrapped with a first medical sterile dressing (3) that fits the skin. The first medical sterile dressing (3) is surrounded by four second suction cups (9).

2. The burn debridement and healing promotion device with zoned negative pressure regulation according to claim 1, characterized in that, The exterior of the second suction cup (9) is attached to the first medical sterile dressing (3) through the third medical sterile dressing (8). A second air guide tube (10) is provided at one end of the second suction cup (9), and a third air guide tube (12) is provided at one end of each of the four second air guide tubes (10).

3. The burn debridement and healing promotion device with zoned negative pressure regulation according to claim 2, characterized in that, A filter cylinder (14) is provided at one end of the third air guide pipe (12), and a fourth air guide pipe (15) is provided through the lower end of the filter cylinder (14). A regulating valve (11) is provided between the second air guide pipe (10) and the third air guide pipe (12).

4. The burn debridement and healing promotion device with zoned negative pressure regulation according to claim 3, characterized in that, The control methods for the regulating valve (11) include: Based on the negative pressure regulation knowledge base, extract the regulation basis set; Based on historical negative pressure regulation process records, the semantic set of regulation criteria extracted from wound images is obtained from the regulation criteria set; Based on the extracted semantic set, the extraction relationship extracted from the wound image is obtained as the adjustment criterion; Based on the extraction relationship corresponding to each adjustment basis in the adjustment basis set, an adjustment basis extraction template is constructed; Obtain images of the wound location before cleaning; Based on the adjustment criteria, the template is extracted to extract adjustment features from the captured image, thereby obtaining the target adjustment feature set. Based on the target regulation feature set and the negative pressure regulation knowledge base, the recommended pressure distribution for the wound area is determined; Analyze the recommendation pressure distribution to obtain the recommendation pressure value set for each target partition; Using the recommended pressure value set as the sub-simulation target of the corresponding local negative pressure space of each target partition, local fluid simulation is carried out in the local negative pressure space to determine the initial control parameters of the regulating valve (11) corresponding to each target partition; Based on the initial control parameters, a global fluid simulation is performed in the negative pressure space to determine the sub-simulation results of each local negative pressure space and the fluid characteristics between local negative pressure spaces. The initial control parameters are fine-tuned globally based on the deviation between the sub-simulation results and the sub-simulation objective, and the fluid characteristics associated with the sub-simulation results. Determine the optimal control parameters based on the global fluid simulation results after global fine-tuning; The control valve (11) is controlled accordingly based on the optimal control parameters.

5. The burn debridement and healing promotion device with zoned negative pressure regulation according to claim 3, characterized in that, The lower end of the filter cylinder (14) stores the liquid for filtration. A heat-conducting pipe (16) is provided in the middle recess of the lower end of the filter cylinder (14). A heating rod (17) is provided inside the heat-conducting pipe (16).

6. The burn debridement and healing promotion device with zoned negative pressure regulation according to claim 5, characterized in that, A connecting block (30) is welded to the lower end of the second collecting cylinder (25), and the upper end of the first transmission disc (27) is connected to the lower end of the second collecting cylinder (25) by a slot.

7. The burn debridement and healing promotion device with zoned negative pressure regulation according to claim 6, characterized in that, The front end of the collection box (1) is provided with a protective cover (22), and a connecting rod (23) is provided through both sides inside the protective cover (22), and a nut is provided on the outside of the connecting rod (23).

8. The burn debridement and healing promotion device with zoned negative pressure regulation according to claim 7, characterized in that, The collection box (1) has a host (2) on one side of its outer wall. The host (2) has a built-in wound healing system. The wound healing system consists of a timing module, a drive module, a position adjustment module, a massage module and a heating module. The timing module is used to keep time when the device is running, and the timing is used as the start signal for the drive module. The drive module is used to drive the second collection cylinder (25), so that the motor at the lower end of the second collection cylinder (25) rotates at regular intervals to switch the position of the second collection cylinder (25); The position adjustment module is used to drive the threaded rod (32) to rotate and adjust the position of the second collection cylinder (25) and the first collection cylinder (24); The massage module is used to adjust the regulating valve (11) according to the settings. The flow into the negative pressure area is controlled by adjusting the regulating valve (11). The pressure change at different negative pressure positions realizes the massage of the wound position. The heating module is used to drive the heating rod (17) inside the filter cartridge (14) to heat the liquid inside the filter cartridge (14).

9. A burn debridement and healing promotion device with zoned negative pressure regulation according to claim 8, characterized in that, Also perform the following operations: The collected liquid in the second collection cylinder (25) was analyzed during multiple liquid collection periods to generate treatment recommendations, including: Based on the timing module of the host (2), multiple liquid collection periods are determined; Multi-parameter analysis was performed on the collected liquid in the second collection cylinder (25) during each liquid collection period to obtain the time-series feature vector set; Construct a time series rate of change matrix based on the time series feature vector set; Based on the healing status assessment model, the wound healing index is calculated according to the time-series rate of change matrix; The wound healing status category is determined based on the wound healing index and the wound healing status classification standard; Treatment suggestions are generated based on the wound healing status category and output to the display interface of the host (2).

10. The method of using the burn debridement and healing promotion device with zoned negative pressure regulation as described in claim 8, characterized in that, Includes the following steps: Step 1: Place the sponge (18) on the wound and attach it to the skin surface with the first medical sterile dressing (3). The first suction cup (5) is attached to the surface of the first medical sterile dressing (3) with the second ventilation hole (21) attached with the second medical sterile dressing (4). Step 2: The second suction cup (9) is attached to the surface of the first medical sterile dressing (3) by the third medical sterile dressing (8) corresponding to the first ventilation hole (20). The second air guide tube (10) connected to one end of the second suction cup (9) is connected by the third air guide tube (12). Step 3: One of the air pumps is connected to the first air guide tube (7) and the second liquid guide tube (34) and the first liquid guide tube (6) extract the wound position covered by the sponge (18). The other air pump extracts the external gas and sends it into the filter tube (14) through the fourth air guide tube (15). After being filtered by the liquid inside the filter tube (14), the gas is transmitted through the third air guide tube (12). After the massage module adjusts the opening strength of the regulating valve (11), the gas inside the third air guide tube (12) is supplemented to the wound position covered by the sponge (18) by the second air guide tube (10) and the second suction cup (9). Step 4: After the foreign liquid generated by the wound growth is absorbed, it is transferred to the inside of the collection box (1) through the second liquid guide tube (34) and falls into the inside of the second collection cylinder (25). The timing module starts the drive module after timing, and the drive module gives a start signal to the motor at the lower end of the second transmission disk (28). The second transmission disk (28) drives the first transmission disk (27) to rotate through the synchronous belt (31). Step 5: The heating rod (17) is activated and heats the position of the heat pipe (16). The heat pipe (16) heats the liquid inside the filter cylinder (14), so that the gas replenished to the inside of the sponge (18) increases the temperature of the wound. Step 6: Adjust the positions of the second collection cylinder (25) and the first collection cylinder (24) laterally. The saline solution passes through the first medical sterile dressing (3) and is embedded in the reserved tube (19). When the saline solution comes into contact with the wound, it is absorbed and enters the collection box (1) along the first guide tube (6) and the second guide tube (34), so that the saline solution falls into the first collection cylinder (24) after the position is adjusted. Step 7: Medical staff rotate and remove the nut outside the connecting rod (23), remove the protective cover (22) and expose the second collection cylinder (25), and slide the second collection cylinder (25) directly from the upper end of the first transmission plate (27).

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