Burn plastic dynamic negative pressure wound debridement anti-infection device

Abstract

The application provides a burn shaping dynamic negative pressure wound debridement anti-infection device and belongs to the field of medical instruments. The device comprises a base, one side of the top of the base is fixedly connected with a negative pressure suction equipment, the output end of the negative pressure suction equipment is provided with a negative pressure pipe, the middle of the top of the base is fixedly connected with a first support plate, the other side of the top of the base is fixedly connected with a second support plate, and the inside of the second support plate is provided with a drainage assembly capable of switching working areas. The two rolling balls at the bottom of the drainage frame can be in contact with the skin of the patient, so that there is a certain gap between the drainage frame and the skin, pain caused by the local area of the tissue of the patient is avoided, the drainage frame can be moved, the suction area is effectively improved, the drainage frame moves forward and backward when rotating, the suction area is improved, the skin of the patient can be massaged, the blood flow at the wound is improved, and wound healing is promoted.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a dynamic negative pressure wound debridement and infection prevention device for burns and plastic surgery. Background Technology

[0002] Negative pressure wound debridement for burns and plastic surgery is a method that uses negative pressure suction devices to promote wound healing. By applying appropriate negative pressure to the wound surface, drainage is achieved, which can promptly remove purulent fluid, necrotic tissue, foreign bodies, abnormally accumulated blood, digestive fluids, and other harmful substances from the body cavities, organs, or tissues at the burn wound site. This reduces pressure, eliminates dead space, eliminates inflammatory stimulation to the body, and alters the biological environment of the infected site, reducing the body's inflammatory response and thus promoting healing.

[0003] However, most existing wound cleaning and healing devices are negative pressure suction devices connected to a dressing via a tube. The dressing is then placed directly on the wound to perform negative pressure suction. However, in actual use, the entire dressing area is subjected to negative pressure. This method may lack flexibility and fail to improve blood circulation in the wound area, which may affect the speed and effectiveness of wound healing.

[0004] To address the aforementioned technical issues, Chinese Patent No. CN 120154764 B discloses a negative pressure wound debridement and healing device for burns and plastic surgery. This device performs negative pressure treatment sequentially from the outside in and continuously adjusts the force of the negative pressure drainage. This method employs dynamic negative pressure suction, which sequentially extracts each suction groove on the dressing component, allowing the burn wound to enter a negative pressure state in sequence. This promotes blood circulation and removes metabolic waste and inflammatory mediators, thereby accelerating wound healing.

[0005] However, this debridement method has certain problems. When performing debridement, a ring-shaped dressing is used to fix the ring tube at the wound site, but the suction groove is in a fixed state. This will continuously suck the tissue in the area below, which will aggravate the pain in that area. In addition, the gaps between multiple suction grooves cannot be effectively sucked, and the small suction area will cause pus and blood to stagnate in the gaps and cannot be sucked out. Summary of the Invention

[0006] In view of the problems existing in the prior art, the purpose of this invention is to provide a dynamic negative pressure wound debridement and infection prevention device for burns and plastic surgery.

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] A dynamic negative pressure wound cleaning and infection prevention device for burns and plastic surgery includes a base, a negative pressure suction device is fixedly connected to one side of the top of the base, a negative pressure tube is provided at the output end of the negative pressure suction device, a first support plate is fixedly connected to the middle of the top of the base, and a second support plate is fixedly connected to the other side of the top of the base.

[0009] The second support plate is internally equipped with a drainage component that allows for switching of working areas; the negative pressure pipe is connected to the drainage component.

[0010] The drainage assembly includes a rotating frame that rotates inside the second support plate and a negative pressure chamber fixed to the top of the first support plate. A first negative pressure hole is provided on one side of the negative pressure chamber. A stepper motor is fixedly connected to the side of the negative pressure chamber where the first negative pressure hole is located. A storage groove is provided inside the rotating frame. The storage groove is connected to a sewage discharge assembly. A second negative pressure hole is provided on the side of the rotating frame near the negative pressure chamber. A manifold assembly is provided on the other side of the rotating frame. The manifold assembly is connected to the wound cleaning assembly.

[0011] Optionally, the output end of the stepper motor is fixedly connected to the middle of one side of the rotating frame, the diameter of the first negative pressure hole and the second negative pressure hole are the same, and six sets of the storage groove and the second negative pressure hole are evenly arranged and correspond to each other. The interior of the storage groove is connected to the second negative pressure hole.

[0012] Optionally, a sealing ring is fixedly connected to the outer surface of the negative pressure chamber near the rotating frame, and the sealing ring has an L-shaped cross-section. A rubber pad is provided on the side of the sealing ring near the rotating frame and fits tightly against one side of the rotating frame.

[0013] Optionally, the manifold assembly includes six guide pipes connected to one side of the rotating frame. One end of each guide pipe is connected to the manifold cylinder via a one-way valve, and a rotary joint is fixedly connected to one side of the manifold cylinder.

[0014] Optionally, the interior of the guide pipe is interconnected with the interior of the corresponding receiving groove, the guide pipe is L-shaped, and the flow direction of the one-way valve is the flow of the manifold into the interior of the guide pipe.

[0015] Optionally, the sewage discharge assembly includes a fixed frame extending through the surface of the collection tank and a collection tank disposed on the top of the base. The fixed frame has first inlet ports on both sides. A movable frame is slidably connected inside the fixed frame. The movable frame has second inlet ports on both sides of its inner surface. Fixed plates are fixedly connected to both sides of the movable frame. One end of a first spring is fixedly connected to the fixed plate.

[0016] Optionally, the other end of the first spring is fixedly connected to the outer surface of the rotating frame, one end of the fixed frame extends into the interior of the storage groove, and the moving frame and the fixed frame are adapted to each other.

[0017] Optionally, a debridement component is provided on one side of the rotary joint. The debridement component includes a first flexible tube disposed on one side of the rotary joint. A circular cover is provided on the outer surface of the first flexible tube. A circular frame is rotatably connected to one end of the first flexible tube. Five second flexible tubes are evenly connected to the outer surface of the circular frame. A guide frame is fixedly connected to one end of each second flexible tube. An inlet is provided at the bottom of the guide frame. A driving component is provided at the top of the guide frame.

[0018] Optionally, the driving component includes a servo motor fixed to the top of the inner surface of the circular cover and a second ring fixed to the inner surface of the circular cover. Triangular blocks are uniformly fixedly connected to the inner surface of the second ring. The output end of the servo motor is connected to the first ring. A slide rail is fixedly connected to the bottom of the first ring. A slider is slidably connected inside the slide rail. One end of a second spring is fixedly connected to one side of the slider. The other end of the second spring is connected to the inner sidewall of the slide rail. A protruding rod is fixedly connected to one side of the top of the guide frame.

[0019] Optionally, the protruding rod and the inner surface of the second ring slide against each other, ball bearings are rotatably provided on both sides of the bottom of the guide frame, and the bottom of the slider is fixedly connected to the top of the guide frame.

[0020] Compared with the prior art, the technical solution provided by this invention has at least the following beneficial effects:

[0021] In the above solution, by setting up a debridement component, two rollers at the bottom of the drainage frame contact the patient's skin, creating a certain gap between the drainage frame and the skin. This avoids pain caused by suctioning local areas of the patient's tissue. At the same time, the drainage frame can move, effectively increasing the suction area. When the drainage frame rotates, it moves back and forth, expanding the suction area and massaging the patient's skin, improving blood flow at the wound site and enhancing wound healing.

[0022] By setting up drainage and manifold components, the pus inside the manifold can smoothly enter the drainage tube. The one-way valve can prevent the backflow of pus and allow it to enter the collection tank. Thus, the collection tank can be used sequentially, and debridement operations can be performed on different patients in sequence.

[0023] By setting up a sewage discharge component, the fixed plate and the edge of the collection tank come into contact with each other. At this time, the moving frame is squeezed upward, which drives the two second inlets to move upward synchronously, so that the second inlets and the first inlet overlap each other. At this time, the pus inside the collection tank enters the interior of the moving frame through the first inlet and the second inlet and falls into the interior of the collection tank for collection, thereby reducing manual contact during sewage discharge and avoiding cross-infection. Attached Figure Description

[0024] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0027] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0028] Figure 4 This is a schematic diagram of the rotating frame structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the internal structure of the rotating frame of the present invention;

[0030] Figure 6 This is a schematic diagram of the busbar assembly structure of the present invention;

[0031] Figure 7 This is a cross-sectional view of the sewage discharge component of the present invention;

[0032] Figure 8 This is a schematic diagram of the debridement component structure of the present invention. Figure 1 ;

[0033] Figure 9 This is a schematic diagram of the debridement component structure of the present invention. Figure 2 ;

[0034] Figure 10 This is a schematic diagram of the debridement component structure of the present invention. Figure 3 ;

[0035] Figure 11 This is a schematic cross-sectional view of the slide rail structure of the present invention;

[0036] Figure 12 This is a schematic cross-sectional view of the circular cover structure of the present invention.

[0037] [Figure Labels]

[0038] 1. Base; 2. Negative pressure suction device; 3. Negative pressure pipe; 4. First support plate;

[0039] 5. Drainage assembly; 51. Negative pressure chamber; 52. First negative pressure hole; 53. Stepper motor; 54. Rotating frame;

[0040] 55. Manifold assembly; 551. Guide pipe; 552. Check valve; 553. Manifold tube; 554. Rotary joint;

[0041] 56. Sewage discharge assembly; 561. Fixed frame; 562. First inlet; 563. Moving frame; 564. Second inlet; 565. Fixed plate; 566. First spring; 567. Collection tank;

[0042] 57. Storage slot; 58. Second negative pressure hole;

[0043] 6. Debridement components; 61. First flexible tube; 62. Circular cover; 63. Circular frame; 64. Second flexible tube; 65. Guide frame; 66. Servo motor; 67. First ring; 68. Slide rail; 69. Protruding rod; 610. Triangular block; 611. Second ring; 612. Inlet; 613. Slider; 614. Second spring;

[0044] 7. Second support plate.

[0045] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0046] The following is a detailed description of a dynamic negative pressure wound debridement and infection prevention device for burns and plastic surgery provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0047] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0048] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0049] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0050] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0051] like Figures 1 to 12 As shown in the figure, an embodiment of the present invention discloses a dynamic negative pressure wound cleaning and infection prevention device for burns and plastic surgery, comprising a base 1, a negative pressure suction device 2 fixedly connected to one side of the top of the base 1, a negative pressure tube 3 provided at the output end of the negative pressure suction device 2, a first support plate 4 fixedly connected to the middle of the top of the base 1, and a second support plate 7 fixedly connected to the other side of the top of the base 1. A drainage component 5 with switchable working areas is provided inside the second support plate 7. The first support plate 4 supports the drainage component 5, and the negative pressure tube 3 connects to the drainage component 5.

[0052] like Figures 2 to 5As shown, the drainage component 5 includes a rotating frame 54 rotatably disposed inside the second support plate 7 and a negative pressure chamber 51 fixed to the top of the first support plate 4. A first negative pressure hole 52 is formed on one side wall of the negative pressure chamber 51. A stepper motor 53 is fixedly connected to the side of the negative pressure chamber 51 with the first negative pressure hole 52. Several collection slots 57 are formed inside the rotating frame 54, and a sewage discharge component 56 is connected to each collection slot 57. Several second negative pressure holes 58 are formed on one side of the rotating frame 54, and a manifold component 55 is provided on the other side of the rotating frame 54. The several second negative pressure holes 58 are arranged in a circular array on the side wall of the rotating frame.

[0053] The output end of the stepper motor 53 is fixedly connected to the middle of the side of the rotating frame 54 where the second negative pressure hole 58 is located. The diameters of the first negative pressure hole 52 and the second negative pressure hole 58 are the same. There are six sets of storage slots 57 and the second negative pressure hole 58 evenly arranged. The interior of each storage slot 57 is connected to the corresponding second negative pressure hole 58.

[0054] A sealing ring is fixedly connected to the outer surface of the negative pressure chamber 51 near the rotating frame 54, and the sealing ring has an L-shaped cross-section. A rubber pad is provided on the side of the sealing ring near the rotating frame 54 and fits tightly against the side of the rotating frame 54.

[0055] like Figure 6 As shown, the manifold assembly 55 includes six guide pipes 551 fixedly connected to one side of the rotating frame 54. One end of each guide pipe 551 is equipped with a one-way valve 552, and one end of the one-way valve 552 is fixedly connected to a manifold cylinder 553. A rotary joint 554 is provided on one side of the manifold cylinder 553. The one-way valve 552 connects the guide pipes 551 and the manifold cylinder 553. The six guide pipes 551 correspond to six receiving slots 57.

[0056] One end of the one-way valve 552 extends into the interior of the manifold 553. The interior of the guide pipe 551 is connected to the interior of the corresponding receiving groove 57. The guide pipe 551 is L-shaped. The flow direction of the one-way valve 552 is the flow from the manifold 553 into the interior of the guide pipe 551.

[0057] During debridement and drainage of the patient, the debridement component 6 is placed at the patient's wound site, and the negative pressure suction device 2 is activated. The first negative pressure hole 52 and the bottommost second negative pressure hole 58 are aligned and connected, so that the inside of the receiving groove 57 is connected to the negative pressure chamber 51. Since the negative pressure chamber 51 is connected to the negative pressure tube 3, the inside of the receiving groove 57 and the negative pressure tube 3 are interconnected. The negative pressure tube 3 creates a negative pressure state inside the receiving groove 57. Since the receiving groove 27 is connected to the drainage tube 551, the drainage tube 551 creates a negative pressure state inside the manifold 553. At this time, the pus from the wound enters the manifold 553 through the debridement component 6. The pus inside 53 enters the guide tube 551 through the one-way valve 552 and is collected inside the collection tank 57. After the collection tank 57 is completely collected, the stepper motor 53 is started to drive the rotating frame 54 to rotate a certain angle so that the adjacent second negative pressure hole 58 rotates to the first negative pressure hole 52, so that the inside of the adjacent collection tank 57 is in a negative pressure state. This causes the guide tube 551 corresponding to the collection tank 57 to rotate to the bottom of the manifold 553, so that the pus inside the manifold 553 can smoothly enter the guide tube 551 and then enter the collection tank 57. Thus, the collection tank 57 can be used in sequence, and debridement operations can be performed on different patients in sequence.

[0058] like Figures 3 to 7 As shown, the sewage discharge assembly 56 includes a fixed frame 561 fixedly connected to the collection trough 57 and a collection trough 567 set on the top of the base plate 1. The fixed frame 561 has a first inlet 562 on both sides. A movable frame 563 is slidably connected inside the fixed frame 561. The movable frame 563 has a second inlet 564 on both sides. A fixed plate 565 is fixedly connected to both sides of one end of the movable frame 563. One end of a first spring 566 is fixedly connected to the fixed plate 565.

[0059] The other end of the first spring 566 is fixedly connected to the outer surface of the rotating frame 54, one end of the fixed frame 561 extends out of the interior of the storage groove 57, and the moving frame 563 and the fixed frame 561 are adapted to each other.

[0060] After cleaning, the pus inside the collection tank 57 needs to be treated. The collection tank 567 is placed directly below the rotating frame 54. Rotating the rotating frame 54 causes the moving frame 563 to rotate, which in turn moves the two fixed plates 565 towards the collection tank 567. The fixed plates 565 contact the edge of the collection tank 567, at which point the moving frame 563 is pushed upwards, causing the two second inlets 564 to move upwards synchronously, so that the second inlets 564 and the first inlet 562 overlap. Because the first inlet 56... 2. The pus inside the collection tank 57 is connected to the collection tank 57. At this time, the pus inside the collection tank 57 enters the interior of the moving frame 563 through the first inlet 562 and the second inlet 564, and falls into the collection tank 567 for collection. At this time, the rotating frame 54 continues to rotate, and the pus inside the collection tank 57 is discharged and collected in sequence. When the fixed plate 565 rotates away from the upper edge of the collection tank 567, the moving frame 563 is driven to move and reset inside the fixed frame 561 under the elastic force of the first spring 566, so that the second inlet 564 and the first inlet 562 are staggered.

[0061] like Figures 8 to 12 As shown, a debridement component 6 is connected to one side of the rotary joint 554. The debridement component 6 includes a first flexible tube 61 connected to one side of the rotary joint 554. A circular cover 62 is provided on the outer surface of the first flexible tube 61. One end of the first flexible tube 61 is rotatably connected to a circular frame 63. The outer surface of the circular frame 63 is evenly connected to one end of five second flexible tubes 64. The other end of the second flexible tubes 64 is fixedly connected to a guide frame 65. An inlet 612 is provided at the bottom of the guide frame 65. A driving component is provided at the top of the guide frame 65.

[0062] The driving components include a servo motor 66 fixed to the top of the inner surface of the circular cover 62 via a connecting plate, and a second ring 611 fixed to the inner surface of the circular cover 62 via a connecting rod. Several triangular blocks 610 are uniformly fixedly connected around the inner surface of the second ring 611. A first ring 67 is fixedly connected to the output end of the servo motor 66. A slide rail 68 is fixedly connected to the bottom of the first ring 67. A slider 613 is slidably connected inside the slide rail 68. One end of a second spring 614 is fixedly connected to one side of the slider 613. The other end of the second spring 614 is connected to the inner wall of the slide rail 68. A protruding rod 69 is fixedly connected to one side of the top of the guide frame 65. The servo motor 66 causes the guide frame 65 to rotate in both directions within the circular cover 62.

[0063] The protruding rod 69 slides and fits against the inner surface of the second ring 611. Ball bearings are rotatably provided on both sides of the bottom of the guide frame 65. The bottom of the slider 613 is fixedly connected to the top of the guide frame 65.

[0064] When performing debridement and aspiration on a patient, the circular cover 62 is placed over the wound, ensuring that the two ball bearings at the bottom of the guide frame 65 are in contact with the patient's skin. A gap is maintained between the guide frame 65 and the skin to prevent pain caused by suctioning only a localized area of ​​tissue. The negative pressure suction device 2 is activated, and the first negative pressure hole 52 and the bottommost second negative pressure hole 58 are aligned, connecting the inside of the receiving groove 57 with the inside of the negative pressure tube 3. The negative pressure tube 3 creates a negative pressure inside the receiving groove 57, and the guide tube 551 creates a negative pressure inside the manifold 553. Since the guide frame 65 is connected to the manifold 553 via the second flexible tube 64 and the first flexible tube 61, the inside of the guide frame 65 is ultimately under negative pressure, causing a buildup at the inlet 612. A strong suction force is generated to draw out the pus from the wound. The pus enters the circular frame 63 through the second hose 64, and then enters the manifold 553 through the first hose 61. The servo motor 66 then drives the first ring 67 to rotate in both directions. Through the cooperation of the slide rail 68 and the slider 613, the guide frame 65 rotates. The guide frame 65 drives the protruding rod 69 to slide on the inner surface of the second ring 611. When the protruding rod 69 moves to the inclined surface of the triangular block 610, it drives the guide frame 65 to move. The guide frame 65 slides inside the slide rail 68 via the slider 613, allowing it to move back and forth during rotation, increasing the suction area and simultaneously massaging the patient's skin to ensure blood flow to the wound and improve healing. Because the second hose 64 is in a relaxed state, the end of the second hose 64 connected to the circular frame 63 does not move when the guide frame 65 rotates and moves.

[0065] The workflow of the technical solution provided by this invention is as follows:

[0066] When performing wound cleaning and aspiration on a patient, the circular cover 62 is placed over the wound, ensuring that the two ball bearings at the bottom of the drainage frame 65 are in contact with the patient's skin. A gap is maintained between the drainage frame 65 and the skin to prevent localized aspiration of the patient's tissue. The negative pressure suction device 2 is activated, creating a negative pressure state inside the drainage frame 65. This generates strong suction at the inlet 612, drawing pus from the wound. The pus enters the circular frame 63 through the second tubing 64, then through the first tubing 61 into the manifold 553. After passing through the one-way valve 552, the fluid enters the guide tube 551 and is collected in the collection tank 57. Once the collection tank 57 has been completely collected, the rotating frame 54 is rotated at a certain angle so that the adjacent second negative pressure hole 58 rotates to the first negative pressure hole 52, causing the adjacent collection tank 57 to be in a negative pressure state. This causes the guide tube 551 corresponding to the collection tank 57 to rotate to the bottom of the manifold 553, allowing the pus inside the manifold 553 to smoothly enter the guide tube 551 and then the collection tank 57, thus enabling the collection tank 57 to be used sequentially.

[0067] The servo motor 66 is then started to drive the first ring 67 to rotate in both directions. Through the cooperation of the slide rail 68 and the slider 613, the guide frame 65 is driven to rotate. The guide frame 65 drives the protruding rod 69 to slide on the inner surface of the second ring 611. When the protruding rod 69 moves to the inclined surface of the triangular block 610, the protruding rod 69 will drive the guide frame 65 to move. The guide frame 65 slides inside the slide rail 68 through the slider 613, so that the guide frame 65 moves back and forth when rotating, thereby increasing the absorption area.

[0068] After cleaning, the pus inside the collection tank 57 needs to be treated. The collection tank 567 is placed directly below the rotating frame 54. Rotating the rotating frame 54 causes the moving frame 563 to rotate, which in turn moves the two fixed plates 565 towards the collection tank 567. The fixed plates 565 contact the edge of the collection tank 567, at which point the moving frame 563 is pushed upwards, causing the two second inlet ports 564 to move upwards synchronously, so that the second inlet ports 564 and the first inlet port 562 overlap. At this time, the pus inside the collection tank 57 enters the interior of the moving frame 563 through the first inlet 562 and the second inlet 564, and falls into the collection tank 567 for collection. Then, the rotating frame 54 continues to rotate, and the pus inside the collection tank 57 is discharged and collected in sequence. When the fixed plate 565 rotates away from the upper edge of the collection tank 567, the moving frame 563 moves and resets inside the fixed frame 561 under the elastic force of the first spring 566, so that the second inlet 564 and the first inlet 562 are staggered.

[0069] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0070] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery, characterized in that, Includes a base, a negative pressure suction device is fixedly connected to one side of the top of the base, a negative pressure tube is provided at the output end of the negative pressure suction device, a first support plate is fixedly connected to the middle of the top of the base, and a second support plate is fixedly connected to the other side of the top of the base. The second support plate is internally equipped with a drainage component that allows for switching of working areas; the negative pressure pipe is connected to the drainage component. The drainage assembly includes a rotating frame that rotates inside the second support plate and a negative pressure chamber fixed to the top of the first support plate. A first negative pressure hole is provided on one side of the negative pressure chamber. A stepper motor is fixedly connected to the side of the negative pressure chamber where the first negative pressure hole is located. A storage groove is provided inside the rotating frame. The storage groove is connected to a sewage discharge assembly. A second negative pressure hole is provided on the side of the rotating frame near the negative pressure chamber. A manifold assembly is provided on the other side of the rotating frame. The manifold assembly is connected to the wound cleaning assembly.

2. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 1, characterized in that, The output end of the stepper motor is fixedly connected to the middle of one side of the rotating frame. The diameters of the first negative pressure hole and the second negative pressure hole are the same. The storage groove and the second negative pressure hole are evenly arranged in six sets and correspond to each other. The interior of the storage groove is connected to the second negative pressure hole.

3. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 2, characterized in that, A sealing ring is fixedly connected to the outer surface of the negative pressure chamber near the rotating frame, and the sealing ring has an L-shaped cross-section. A rubber pad is provided on the side of the sealing ring near the rotating frame and fits tightly against one side of the rotating frame.

4. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 1, characterized in that, The manifold assembly includes six guide tubes connected to one side of the rotating frame. One end of each guide tube is connected to the manifold cylinder via a one-way valve. A rotary joint is fixedly connected to one side of the manifold cylinder.

5. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 4, characterized in that, The interior of the guide tube is connected to the interior of the corresponding receiving groove. The guide tube is L-shaped, and the flow direction of the one-way valve is the flow from the manifold to the interior of the guide tube.

6. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 5, characterized in that, The sewage discharge assembly includes a fixed frame extending through the surface of the collection tank and a collection tank set on the top of the base. The fixed frame has a first inlet on both sides. A movable frame is slidably connected inside the fixed frame. The movable frame has a second inlet on both sides of its inner surface. A fixed plate is fixedly connected to both sides of the movable frame. One end of a first spring is fixedly connected to the fixed plate.

7. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 6, characterized in that, The other end of the first spring is fixedly connected to the outer surface of the rotating frame, one end of the fixed frame extends out of the interior of the storage groove, and the moving frame and the fixed frame are adapted to each other.

8. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 4, characterized in that, A debridement component is provided on one side of the rotary joint. The debridement component includes a first flexible tube provided on one side of the rotary joint. A circular cover is provided on the outer surface of the first flexible tube. A circular frame is rotatably connected to one end of the first flexible tube. Five second flexible tubes are evenly connected to the outer surface of the circular frame. A guide frame is fixedly connected to one end of the second flexible tube. An inlet is provided at the bottom of the guide frame. A driving component is provided at the top of the guide frame.

9. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 8, characterized in that, The driving component includes a servo motor fixed to the top of the inner surface of the circular cover and a second ring fixed to the inner surface of the circular cover. Triangular blocks are uniformly fixedly connected to the inner surface of the second ring. The output end of the servo motor is connected to the first ring. A slide rail is fixedly connected to the bottom of the first ring. A slider is slidably connected inside the slide rail. One end of a second spring is fixedly connected to one side of the slider. The other end of the second spring is connected to the inner sidewall of the slide rail. A protruding rod is fixedly connected to one side of the top of the guide frame.

10. The dynamic negative pressure wound debridement and infection prevention device for burn and plastic surgery according to claim 9, characterized in that, The protruding rod slides and fits against the inner surface of the second ring. Ball bearings are rotatably arranged on both sides of the bottom of the guide frame. The bottom of the slider is fixedly connected to the top of the guide frame.

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