Diabetic foot infected wound flushing device

Abstract

The invention relates to a diabetic foot infected wound flushing device which can solve the problem that a traditional method is prone to causing cross infection. The device comprises a shell (comprising two side plates), a nozzle (top atomized disinfectant), an infusion tube and a driving pump, the first roller is arranged between the side plates and is wound with clean cotton cloth; the dirt suction plate is located below the first roller, one end is rotationally connected with the side plate, and the other end freely extends and is in an inclined downward state in a natural state; the second roller is located below the dirt suction plate and used cotton cloth is wound on the second roller. Cotton cloth is wound on the second roller from the first roller through the upper and lower surfaces of the dirt suction plate. When the dirt suction plate rotates clockwise to the nozzle, the first roller and the second roller are static; and when the dirt suction plate rotates anticlockwise to an inclined downward state, the second roller rotates anticlockwise to wind the cotton cloth, and the first roller synchronously releases new cotton cloth. According to a traditional debridement method that cotton balls are clamped through tweezers, due to repeated friction between the cotton balls and wounds, local red and swollen and inflammatory reactions are prone to being caused, and the risks are remarkably reduced through non-contact operation of the device.

Description

Technical Field

[0001] The invention relates to a device for flushing a diabetic foot infection wound. Background Art

[0002] Diabetic foot is caused by a series of foot lesions due to poor blood sugar control, peripheral nerve and vascular diseases. The main complications are foot ulcers and infections. If the patient has an infection, anti-infection treatment should be carried out first, and the wound surface should be treated secondly. In the process of treating the wound surface, multiple steps are required: including cleaning, disinfection, wound expansion, cleaning and bandaging. Generally, after debridement, gauze should be used to bandage the local area to avoid improper care, which may induce pathogen infection and cause recurrence of the disease. During the flushing operation, when the upper wound surface is flushed, the residual flushing fluid flows downward along the flushing path, which may carry the pathogens from the upper wound surface to the lower wound area, thereby causing the risk of cross infection. Summary of the Invention

[0003] The present invention provides a diabetic foot infection wound flushing device to solve the problem of cross infection that is easily caused when cleaning the wound using traditional methods.

[0004] A device for flushing infected diabetic foot wounds, comprising: a shell, the shell comprising side panels on two sides and a handle on the back; a nozzle, the nozzle being mounted on the top of the side panel and being used to atomize disinfectant; an infusion tube, the infusion tube delivering disinfectant to the nozzle; a pump, the pump connecting the nozzle and the infusion tube and providing power for delivering the disinfectant; a first roller, the first roller being disposed between the two side panels and being used to wrap clean cotton cloth; a dirt suction plate, the dirt suction plate being located below the first roller as a cleaning surface for the infected diabetic foot wound, one end of the dirt suction plate being rotatably connected to the side panel, and the other end being a free end extending outward. , the dirt suction plate is in a slanted downward state in its natural state; and a second roller, the first roller is located below the dirt suction plate and is arranged between the two side plates, for winding the used cotton cloth, the cotton cloth on the first roller passes around the upper and lower surfaces of the dirt suction plate and is wound around the second roller, when the dirt suction plate rotates clockwise to the nozzle, the first roller and the second roller remain stationary; when the dirt suction plate rotates counterclockwise to a slanted downward state, the second roller rotates counterclockwise to roll up the cotton cloth on the surface of the dirt suction plate, and the first roller rotates counterclockwise to release the cotton cloth on the surface of the dirt suction plate.

[0005] In some examples, both sides of one end of the dirt suction plate have mounting shafts, and the two side plates respectively have shaft holes matching the two mounting shafts. The mounting shafts are assembled in the shaft holes, so that the dirt suction plate can rotate clockwise or counterclockwise.

[0006] In some examples, a torsion spring is installed between the shaft hole and the mounting shaft, so that the dirt suction plate is in a tilted downward state in a natural state.

[0007] In some examples, the interior of the dirt-absorbing plate is a hollow structure with closed sides and a plurality of openings provided on the surface, and the openings are used to allow the contaminated liquid absorbed by the cotton cloth to penetrate into the interior of the dirt-absorbing plate.

[0008] In some examples, the dirt suction plate is connected to the second roller via a linkage mechanism.

[0009] In some examples, the linkage mechanism includes: a first gear, coaxially connected to the mounting shaft of the dirt suction plate, directly receiving the rotation input of the dirt suction plate; a second gear, meshing with the first gear; a thorn gear, coaxially fixed to the rotating shaft with the second gear, and the rotation direction of the thorn gear is consistent with that of the second gear; a third gear, movably mounted on the rotating shaft, freely rotatable, and meshing with the fourth gear; and a fourth gear, meshing with the third gear and coaxially connected to the second roller, whose rotation directly drives the second roller to rewind the cotton cloth; the rotating shaft is supported by the two side plates, serving as the rotation axis of the second gear and the thorn gear; each tooth of the thorn gear extends outward from the body, and the lower end is connected to the body by a spring, having radial movement freedom, and the teeth include vertical a vertical surface in the circumference of the main body and an inclined surface inclined relative to the circumference of the main body; a protrusion is provided on the side of the third gear that matches the tooth, and the shape of the protrusion is adapted to the vertical surface and the inclined surface of the tooth; when the thorn gear rotates clockwise, the vertical surface of the tooth contacts the vertical surface of the protrusion of the third gear, pushing the third gear to rotate synchronously clockwise, and then driving the second roller to rotate counterclockwise through the fourth gear to roll up the cotton cloth; when the thorn gear rotates counterclockwise, the inclined surface of the tooth contacts the arc-shaped surface of the protrusion, and the two slide relative to each other, and the tooth shrinks toward the center during the sliding process and disengages from the protrusion, the third gear remains stationary, the motion chain is disconnected, the second roller does not move, and after the tooth disengages from the protrusion, it returns to its initial position under the action of the spring.

[0010] In some examples, a negative pressure environment is formed inside the dirt absorption plate.

[0011] In some examples, an air pipe is connected between the infusion tube and the sewage suction plate, and a valve for connecting the infusion tube and the air pipe is provided in the infusion tube. When the disinfectant flows toward the nozzle, the valve opens, forming a Venturi effect between the infusion tube and the air pipe, and extracting air from the air pipe and the sewage suction plate to form the negative pressure environment.

[0012] In some examples, the valve includes a bracket fixed in the infusion tube, and a valve core movable in the infusion tube, and a return spring is connected between the bracket and the valve core; when the disinfectant flows toward the nozzle, the valve core moves under the action of the disinfectant pressure to overcome the elastic force of the return spring, opens the interface between the infusion tube and the trachea, and connects the infusion tube with the trachea.

[0013] In some examples, the portion of the side panel corresponding to the first roller and the second roller is detachable to facilitate replacement of the cotton roll. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a diabetic foot infection wound flushing device in one embodiment of the present invention.

[0015] Figure 2 yes Figure 1 The diagram shown is a schematic diagram of the sewage suction plate of the diabetic foot infection wound flushing device rotating to the first position.

[0016] Figure 3 yes Figure 1 The diagram shown is a schematic diagram of the sewage suction plate of the diabetic foot infection wound flushing device rotating to the second position.

[0017] Figure 4 It is a schematic diagram of the arrangement of the nozzle, the first roller, the dirt suction plate and the second roller in one embodiment of the present invention.

[0018] Figure 5 Schematic diagram of a dirt suction plate in one embodiment of the present invention.

[0019] Figure 6 It is a schematic diagram of the connection between the dirt suction plate and the side plate in one embodiment of the present invention.

[0020] Figure 7 It is a schematic diagram of a linkage mechanism in one embodiment of the present invention.

[0021] Figure 8 yes Figure 7 Enlarged schematic diagram of part A.

[0022] Figure 9 Schematic diagram of a valve in one embodiment of the present invention. DETAILED DESCRIPTION

[0023] Figure 1 、 Figure 2 and Figure 3 A device for flushing infected diabetic foot wounds is shown. The device comprises a housing 1, a nozzle 2, a pump 3, an infusion tube 4, a first roller 5a, a second roller 5b, and a dirt suction plate 6.

[0024] The housing 1 comprises side panels 10 on both sides and a handle 11 on the back. Its front 12, top 13 and bottom 14 are open structures.

[0025] like Figure 4 As shown, the nozzle 2, the first roller 5a, the dirt suction plate 6, and the second roller 5b are arranged in sequence from top to bottom.

[0026] The nozzle 2 is mounted on top of the housing 1. Specifically, the nozzle 2 or its integrally connected pump 3 is connected to the two side panels 10 via a rotating shaft, enabling flexible adjustment of the pitch angle. The pump 3 is connected to the disinfectant container via an infusion tube 4. When activated, the liquid is atomized and sprayed out of the nozzle 2. The switch controlling the pump 3 is mounted on the handle 11, allowing the operator to directly start and stop the device by gripping it.

[0027] A clean cotton cloth 7 is wound around the first roller 5a, passed through both sides of the suction plate 6, and then wound onto the second roller 5b. The suction plate 6 serves as a contact surface for the diabetic foot wound, absorbing waste after flushing. An auxiliary roller assembly 5c is positioned along the cotton cloth transport path, located between the first roller 5a and the suction plate 6. This helps adjust the cotton cloth's direction and improve transport stability. The first roller 5a, second roller 5b, and auxiliary roller assembly 5c are all movably mounted to the side panel 10 via bearings, allowing them to rotate freely to accommodate the movement of the cotton cloth.

[0028] In addition, the side panel 10 is formed by splicing a plurality of panels, wherein the positions corresponding to the first roller 5a and the second roller 5b are provided with detachable structures to facilitate the disassembly and replacement of the cotton cloth roll.

[0029] The device achieves continuous wound cleaning and disinfection through directional flushing from the nozzle 2, immediate suction from the suction plate 6, and automatic replacement of the cotton cloth 7. The removable side panel design further improves the device's maintenance efficiency, making it suitable for rapid treatment needs in clinical scenarios.

[0030] like Figure 5 As shown, the absorbing plate 6 is designed as a hollow cavity with closed sides to prevent liquid from overflowing. Its upper and lower surfaces are provided with a plurality of openings 60. When the cotton cloth 7 wrapped around the surface absorbs the contaminated liquid flowing from the diabetic foot wound, the liquid can penetrate into the absorbing plate 6 through the openings 60.

[0031] The dirt suction plate 6 is designed with one end fixed and one end suspended. Mounting shafts are provided on both sides of one end of the dirt suction plate 6. The mounting shafts 63 are connected to the lower ends of the two side panels 10 of the housing 1. The side panels 10 are provided with corresponding shaft holes 15. The mounting shafts 63 are inserted into the shaft holes 15 to form a revolving pair, allowing the dirt suction plate 6 to swing in a clockwise or counterclockwise direction. To achieve the automatic reset function, a torsion spring 64 (see Figure 6 ).

[0032] Natural state (first position): Under the preload force of the torsion spring 64, the dirt suction plate 6 maintains a downward tilt by default (refer to Figure 2 ).

[0033] Forced state (second position): When the operator manually applies external force (such as pushing upward), the dirt suction plate 6 can rotate clockwise around the mounting shaft 63 so that the upper surface faces the direction of the nozzle 2 (refer to Figure 3 ).

[0034] Reset function: After the external force is removed, the elastic restoring force of the torsion spring 64 drives the dirt suction plate 6 to rotate counterclockwise to the oblique downward state, and restore the initial working position.

[0035] The suction plate 6 is connected to the second roller 5b via a linkage mechanism 8. The linkage mechanism 8 utilizes a one-way transmission design. When the suction plate 6 rotates counterclockwise, the linkage mechanism 8 transmits this rotational motion to the second roller 5b, driving it to rotate counterclockwise in tandem, thereby rewinding the cotton cloth 7 after it has absorbed the contaminated liquid. Since the cotton cloth 7 is wound between the first and second rollers 5a, the counterclockwise rotation of the second roller 5b directly drives the first roller 5a to rotate counterclockwise, releasing the clean cotton cloth 7 onto the surface of the suction plate 6, completing the automatic replacement of the cotton cloth.

[0036] The linkage mechanism 8 has a locking effect on the clockwise rotation input (such as when the dirt suction plate 6 is manually pulled up), and will not transmit this action to the second roller 5b, ensuring that the winding action is triggered only when rotating counterclockwise.

[0037] In actual use, the operator simply pulls the suspended end of the suction plate 6 upward (clockwise) to overcome the preload of the torsion spring 64 and release the plate 6 from its downwardly tilted position. After releasing the plate 6, it automatically rotates counterclockwise to its initial position under the action of the torsion spring 64. During this process, the linkage mechanism 8 triggers the second roller 5b to rewind the used cotton cloth, while the tension of the cotton cloth 7 drives the first roller 5a to release the clean cotton cloth, completing a complete cotton cloth replacement cycle.

[0038] like Figure 7 As shown, the linkage mechanism 8 includes a first gear 80 , a second gear 81 , a thorn gear 82 , a third gear 83 , a fourth gear 84 and a rotating shaft 85 .

[0039] The first gear 80 is coaxially connected to the mounting shaft 63 of the suction plate 6 and directly receives the rotational input of the suction plate 6. The second gear 81 meshes with the first gear 80. The thorn gear 82 is coaxially fixed to the rotating shaft 85 with the second gear 81 and rotates in the same direction as the second gear 81. The third gear 83 is movably mounted on the rotating shaft 85 (freely rotatable) and meshes with the fourth gear 84. The fourth gear 84 is coaxially connected to the second roller 5b, and its rotation directly drives the second roller 5b to rewind the cotton cloth. The rotating shaft 85 is supported by the two side plates 10 and serves as the rotation axis for the second gear 81 and the thorn gear 82.

[0040] like Figure 8 As shown, the thorn gear 82 utilizes a special tooth design to achieve unidirectional transmission. Each tooth 820 of the thorn gear 82 extends outward from the body, with the lower end connected to the body via a spring 823, allowing radial movement. The vertical surface 821 and inclined surface 822 of the tooth 820 correspond to the clockwise and counterclockwise contact surfaces, respectively.

[0041] A protrusion 830 matching the tooth 820 is provided on the side surface of the third gear 83 , and the shape of the protrusion 830 matches the vertical surface 821 and the inclined surface 822 of the tooth 820 .

[0042] When the thorn gear 82 rotates clockwise, the vertical surface 821 of the tooth 820 contacts the vertical surface 831 of the protrusion 830 of the third gear 83, pushing the third gear 83 to rotate synchronously clockwise, and then driving the second roller 5b to rotate counterclockwise through the fourth gear 84 to roll up the cotton cloth.

[0043] When thorn gear 82 rotates counterclockwise, the inclined surface 822 of tooth 820 contacts the curved surface 832 of protrusion 830 on third gear 83, and the two slide relative to each other. During this sliding process, tooth 820 retracts toward the center and disengages from protrusion 830. Subsequently, spring 823 acts to return tooth 820 to its initial position, causing third gear 83 to remain stationary. The kinematic chain is disconnected, and second roller 5b does not move.

[0044] When the dirt suction plate 6 is pulled upward, the second gear 81 and the thorn gear 82 are driven to rotate counterclockwise through the first gear 80. At this time, the counterclockwise rotation of the thorn gear 82 separates the tooth 820 from the protrusion 830 of the third gear 83, and the third gear 83, the fourth gear 84 and the second roller 5b all remain stationary.

[0045] When the dirt suction plate 6 is reset, the first gear 80 drives the second gear 81 and the thorn gear 82 to rotate clockwise. The clockwise rotation of the thorn gear 82 causes the vertical surface 821 of the tooth 820 to engage with the protrusion 830 of the third gear 83, pushing the third gear 83 to rotate clockwise. This in turn drives the second roller 5b to rotate counterclockwise through the fourth gear 84, thus winding up the used cotton cloth.

[0046] In a preferred embodiment, the negative pressure environment inside the dirt absorption plate 6 accelerates the absorption of the polluted liquid, thereby preventing the dirt absorption plate 6 from being immersed in the polluted liquid.

[0047] The infusion tube 4 is connected to the suction plate 6 via an air pipe 9, and a valve 40 is installed within the infusion tube 4. When the pump 3 drives the disinfectant toward the nozzle 2, the valve 40 opens. The high-speed flow of liquid within the infusion tube 4 creates a negative pressure at the interface 44 through the Venturi effect, which in turn draws air from the air pipe 9 and the suction plate 6, creating a negative pressure environment. The drawn air mixes with the disinfectant in the infusion tube 4 and is ultimately ejected from the nozzle 2 as a gas-liquid mixture. To achieve this Venturi effect, the connecting section M between the infusion tube 4 and the air pipe 9 (where the valve 40 is installed) utilizes a tapered Venturi throat design.

[0048] like Figure 9 As shown, valve 40 comprises a bracket 41 fixed within infusion tube 4, a movable valve core 42, and a return spring 43. When pump 3 is running, high-pressure disinfectant pushes valve core 42, overcoming the elastic force of spring 43 and opening port 44 to establish air communication. When the pump is stopped, spring 43 drives valve core 42 back to its original position, closing port 44.

[0049] It should be noted that the air pipe 9 does not introduce the contaminated liquid in the dirt suction plate 6 into the liquid delivery pipe 4. The reason is that the air pipe 9 is installed on the upper surface of the dirt suction plate 6 and the installation position is close to the end of the installation shaft 63 (away from the free end). Figure 2 As shown, under normal conditions, the suction plate 6 maintains a downwardly tilted position. At this point, the connection point 61 of the trachea 9 is relatively high, and the contaminated liquid naturally flows toward the free end due to gravity, forming a physical barrier. In actual operation, the disinfectant is sprayed in an atomized form, with a relatively small amount of spray. Most of the spray directly affects the surface of the affected foot, with only a small amount of liquid droplets potentially penetrating the suction plate 6 and being absorbed by the cotton cloth on its lower surface. Due to the small volume of the contaminated liquid, after accumulating on the lower surface, the liquid level is lower than the opening of the trachea 9, making it difficult for the liquid to effectively accumulate within the suction plate 6.

[0050] During use, due to the need to rotate the suction plate 6 to replace the cotton cloth, the liquid droplets may flow to the end where the mounting shaft 63 is located. In order to prevent the liquid from gathering at the connection position 61 of the air pipe 9, a guide slope 62 is specially provided in the suction plate 6. Figure 5 When the suction plate 6 returns to its natural, downward-sloping position, the guide slope 62 guides the accumulated droplets to the side of the plate 6 and ultimately to the free end. It should be noted that in actual use, most droplets are absorbed by the cotton cloth, making it difficult for liquid to accumulate within the suction plate 6. Even if a trace amount of residue does occur, the user can remove the cotton cloth to clean and maintain the suction plate 6 in a timely manner.

[0051] Method of using the device of the present invention: 1. Automatic cotton cloth replacement process: Preparation before cleaning: Manually turn the dirt suction plate 6 clockwise to the second position (refer to Figure 3 ), overcoming the preload of the torsion spring 64. After the dirt suction plate 6 is released, it rotates counterclockwise to the first position (refer to Figure 2 ), the linkage mechanism 8 triggers the second roller 5b to rewind the used cotton cloth, and at the same time the first roller 5a releases the clean cotton cloth to the surface of the dirt suction plate 6, completing the automatic replacement.

[0052] 2. Multiple wound management strategies 2.1. Wound isolation operation: Place the free end of the dirt suction plate 6 against the gap between the two wound surfaces, with the nozzle 2 facing the upper wound surface.

[0053] 2.2, step-by-step cleaning process: Clean the upper wound: Start pump 3 to spray atomized disinfectant onto the upper wound. The contaminated liquid is absorbed by cotton cloth 7 and enters the interior of the suction plate 6, preventing it from flowing into the lower wound and preventing cross infection. After cleaning the upper wound, repeat step 1, replace the cotton cloth, and clean the lower wound.

[0054] Clean the wound below: Move the affected foot to the top of the suction plate 6, adjust the direction of the nozzle 2 to aim at the wound below, and spray the disinfectant repeatedly. The contaminated liquid flows along the cotton cloth 7 to the inside of the suction plate 6 and is quickly absorbed by the negative pressure environment.

[0055] Through the physical positioning of the suction plate and the negative pressure suction system, the device of the present invention can effectively collect contaminated liquid flowing out of a single wound surface and prevent it from spreading to adjacent wound surfaces. During operation, the free end of the suction plate can be pressed against the gaps between multiple wound surfaces, forming a physical barrier to prevent the lateral flow of contaminated liquid. At the same time, the negative pressure environment inside the suction plate, generated by the Venturi effect (achieved by the coordinated action of the infusion tube and the trachea), accelerates the absorption and fixation of the contaminated liquid, ensuring that the liquid does not overflow along the surface of the cotton cloth or drip into other areas. In addition, the coordinated action of the linkage mechanism and the torsion spring enables single-time coverage and automatic rewinding of the cotton cloth, eliminating the need for repeated replacement or manual contact with the wound surface. The atomized disinfectant from the nozzle and the cotton cloth on the surface of the suction plate work together to achieve cleaning through liquid penetration rather than mechanical friction, avoiding local pressure stimulation in the wound healing area when the cotton ball is grasped with tweezers. In contrast, the traditional debridement method of using tweezers to pick up cotton balls can easily lead to local redness, swelling, and inflammatory reactions due to repeated friction between the cotton balls and the wound. This device significantly reduces such risks through uniform pressure distribution and contactless operation. It is especially suitable for wounds with poor healing ability such as diabetic foot.

Claims

1. A diabetic foot infection wound flushing device, characterized in that: include: a housing, the housing comprising side panels located on two sides and a handle located on the back; a nozzle, the nozzle being mounted on the top of the side panel and being used for atomizing disinfectant; an infusion tube, wherein the infusion tube delivers disinfectant to the nozzle; a pump connected to the nozzle and the infusion tube to provide power for delivering the disinfectant; a first roller, the first roller being arranged between the two side plates and being used for winding the clean cotton cloth; A dirt suction plate, which is a cleaning surface for diabetic foot infection wounds, is located below the first roller, one end of which is rotatably connected to the side plate, and the other end is a free end extending outward, and is in a slanted downward state in its natural state; as well as The second roller, the first roller is located below the dirt suction plate and is arranged between the two side plates, and is used to wind the used cotton cloth. The cotton cloth on the first roller passes around the upper and lower surfaces of the dirt suction plate and then winds onto the second roller. When the dirt suction plate rotates clockwise toward the nozzle, the first roller and the second roller remain stationary; when the dirt suction plate rotates counterclockwise to an oblique downward position, the second roller rotates counterclockwise to reel in the cotton cloth on the surface of the dirt suction plate, and the first roller rotates counterclockwise to release the cotton cloth onto the surface of the dirt suction plate.

2. The diabetic foot infection wound flushing device according to claim 1, characterized in that: Both sides of one end of the dirt suction plate are provided with mounting shafts, and the two side plates are respectively provided with shaft holes matching the two mounting shafts, and the mounting shafts are assembled in the shaft holes so that the dirt suction plate can rotate clockwise or counterclockwise.

3. The diabetic foot infection wound flushing device according to claim 2, characterized in that: A torsion spring is installed between the shaft hole and the mounting shaft, so that the dirt suction plate is in a tilted downward state in a natural state.

4. The diabetic foot infection wound flushing device according to claim 1, characterized in that: The interior of the dirt-absorbing plate is a hollow structure, the side is closed, and a plurality of openings are provided on the surface. The openings are used to allow the polluted liquid absorbed by the cotton cloth to penetrate into the interior of the dirt-absorbing plate.

5. The diabetic foot infection wound flushing device according to claim 4, characterized in that: The dirt suction plate is connected to the second roller through a linkage mechanism.

6. The diabetic foot infection wound flushing device according to claim 5, characterized in that: The linkage mechanism comprises: A first gear is coaxially connected to the mounting shaft of the dirt suction plate and directly receives the rotation input of the dirt suction plate; a second gear meshing with the first gear; a thorn gear, fixed on the rotating shaft coaxially with the second gear, the thorn gear rotating in the same direction as the second gear; a third gear, movably mounted on the rotating shaft, freely rotatable, and meshing with the fourth gear; and The fourth gear is engaged with the third gear and is coaxially connected to the second roller, and its rotation directly drives the second roller to rewind the cotton cloth; The rotating shaft is supported by the two side plates and serves as the rotation axis of the second gear and the thorn gear; Each tooth of the thorn gear extends outward from the body, and the lower end is connected to the body through a spring, with radial freedom of movement, and the tooth includes a vertical surface perpendicular to the circumference of the body and an inclined surface inclined relative to the circumference of the body; The side surface of the third gear is provided with a protrusion matching the teeth, and the shape of the protrusion is adapted to the vertical surface and the inclined surface of the teeth; When the thorn gear rotates clockwise, the vertical surface of the tooth contacts the vertical surface of the protrusion of the third gear, pushing the third gear to rotate synchronously clockwise, and then driving the second roller to rotate counterclockwise through the fourth gear to roll up the cotton cloth; When the thorn gear rotates counterclockwise, the inclined surface of the tooth contacts the arcuate surface of the protrusion, and the two slide relative to each other. The tooth shrinks toward the center during the sliding process and disengages from the protrusion. The third gear remains stationary, the motion chain is disconnected, the second roller does not move, and after the tooth disengages from the protrusion, it returns to its initial position under the action of the spring.

7. The diabetic foot infection wound flushing device according to claim 4, characterized in that: A negative pressure environment is formed inside the dirt-absorbing plate.

8. The diabetic foot infection wound flushing device according to claim 7, characterized in that: An air pipe is connected between the infusion pipe and the sewage suction plate. A valve for connecting the infusion pipe and the air pipe is arranged in the infusion pipe. When the disinfectant flows toward the nozzle, the valve opens, so that a Venturi effect is formed between the infusion pipe and the air pipe, and the air inside the air pipe and the sewage suction plate is extracted to form the negative pressure environment.

9. The diabetic foot infection wound flushing device according to claim 8, characterized in that: The valve includes a bracket fixed in the infusion tube and a valve core movable in the infusion tube, and a return spring is connected between the bracket and the valve core; when the disinfectant flows toward the nozzle, the valve core overcomes the elastic force of the return spring and moves under the action of the disinfectant pressure, opening the interface between the infusion tube and the trachea, so that the infusion tube is connected to the trachea.

10. The diabetic foot infection wound flushing device according to claim 1, characterized in that: The portion of the side plate corresponding to the first roller and the second roller is detachable, so as to facilitate the replacement of the cotton cloth roll.

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