Diabetic foot infection wound flushing device

Abstract

The present application relates to a kind of diabetic foot infection wound flushing device, can solve the problem that traditional method is prone to cross infection.Equipment includes: shell (including two side plates), nozzle (top atomization disinfectant), infusion tube and drive pump;First roller is set between side plate, winding clean cotton cloth;Suction plate is located below first roller, one end is rotatably connected with side plate, the other end is free to extend, and it is inclined downward in natural state;Second roller is located below suction plate, winding used cotton cloth.Cotton cloth is wound from first roller to second roller through the upper and lower surfaces of suction plate.When suction plate rotates clockwise to nozzle, first and second roller are stationary;When suction plate counterclockwise rotates to inclined downward state, second roller counterclockwise rotates and winds cotton cloth, and first roller synchronously releases new cotton cloth.The debridement method of traditional tweezers clamping cotton ball is prone to local swelling, inflammation reaction due to the friction between cotton ball and wound many times, and the device significantly reduces such risk through non-contact operation.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of diabetic foot infection wound washing device. BACKGROUND

[0002] Diabetic foot is due to the blood sugar control of patient is not ideal, peripheral nerve and blood vessel lesion cause a series of foot lesions, main complication is foot ulcer, infection, if patient has infection, first, anti-infection treatment is carried out, second, wound is handled, in the process of handling wound, need multiple steps: including washing, disinfection, debridement, cleaning and bandaging, generally after debridement, need to select gauze and carry out bandaging to local, to avoid improper nursing, induce pathogenic bacteria infection, cause disease to repeatedly attack.In the process of washing operation, when the upper wound is washed, the residual washing liquid flows downward along the washing path, which may carry the bacteria of the upper wound to the lower wound area, thereby causing cross-infection risk. SUMMARY

[0003] The present application provides a kind of diabetic foot infection wound washing device, solve the problem of cross infection that traditional method is prone to when cleaning wound.

[0004] A kind of diabetic foot infection wound washing device, comprising: shell, the shell includes the side plate in two side faces and the handle in back face;Nozzle, the nozzle is installed at the top of side plate, for atomizing disinfectant;Infusion tube, the infusion tube transports disinfectant to the nozzle;Pump, the pump is connected with the nozzle and the infusion tube, provides power for the transport of disinfectant;First roller, the first roller is arranged between two side plates, for winding clean cotton cloth;Sewage suction plate, the sewage suction plate is located below the first roller as the cleaning table of diabetic foot infection wound, one end is rotatably connected with the side plate, the other end is free end and extends outward, the sewage suction plate is in the state of inclined downward in natural state;And second roller, the first roller is located below the sewage suction plate and is arranged between two side plates, for winding used cotton cloth, the cotton cloth on the first roller is wound on the second roller after passing the upper and lower surfaces of the sewage suction plate, when the sewage suction plate rotates clockwise to the nozzle, the first roller and the second roller remain stationary;When the sewage suction plate rotates counterclockwise to the state of inclined downward, the second roller rotates counterclockwise to roll up the cotton cloth on the surface of the sewage suction plate, the first roller rotates counterclockwise to release the cotton cloth on it to the surface of the sewage suction plate.

[0005] In some examples, one end of the sewage suction plate has two installation shafts on both sides, two side plates have shaft holes matched with two installation shafts respectively, the installation shaft is assembled in the shaft hole, so that the sewage suction plate can rotate clockwise or counterclockwise.

[0006] In some examples, a torsion spring is fitted between the shaft hole and the mounting shaft, so that the suction plate is in a downward angled position in its natural state.

[0007] In some examples, the suction plate has a hollow interior, closed sides, and several openings on its surface, which allow the contaminated liquid absorbed by the cotton cloth to penetrate into the interior of the suction plate.

[0008] In some examples, the 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 suction plate, directly receiving the rotational input of the suction plate; a second gear, meshing with the first gear; a ratchet gear, coaxially fixed on the rotating shaft with the second gear, the rotation direction of the ratchet gear being the same as that of the second gear; a third gear, movably mounted on the rotating shaft, freely rotatable, meshing with a fourth gear; and a fourth gear, meshing with the third gear and coaxially connected to the second roller, its rotation directly driving the second roller to wind up the cotton cloth; the rotating shaft is supported by two side plates, serving as the rotation axis of the second gear and the ratchet gear; each tooth of the ratchet gear extends outward from the body, its lower end connected to the body via a spring, having radial movement freedom, the teeth including vertical... The third gear has a vertical surface circumferentially on its main body and an inclined surface inclined relative to the main body circumferentially; the side of the third gear has a protrusion that matches the tooth, and the shape of the protrusion is adapted to the vertical surface and inclined surface of the tooth; when the ratchet 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 clockwise synchronously, and then driving the second roller to rotate counterclockwise through the fourth gear to roll up the cotton cloth; when the ratchet 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. During the sliding process, the tooth retracts towards the center and disengages from the protrusion. The third gear remains stationary, the kinematic chain is broken, 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 created inside the suction plate.

[0011] In some examples, an air tube is connected between the infusion tube and the suction plate. The infusion tube is equipped with a valve for connecting the infusion tube and the air tube. When the disinfectant flows to the nozzle, the valve opens, creating a Venturi effect between the infusion tube and the air tube, drawing air out of the air tube and the suction plate to form the negative pressure environment.

[0012] In some examples, the valve comprises a bracket fixed in the infusion pipe, and a valve core movable in the infusion pipe, a return spring connected between the bracket and the valve core; when the disinfectant flows to the nozzle, the valve core moves against the elastic force of the return spring under the disinfectant pressure, opens the interface of the infusion pipe and the air pipe, and makes the infusion pipe communicate with the air pipe.

[0013] In some examples, the part of the side plate corresponding to the first roller and the second roller is detachable, facilitating replacement of the cotton roll. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structure diagram of a diabetic foot infection wound flushing device in an embodiment of the present application.

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

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

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

[0018] Figure 5 is a schematic diagram of the suction plate in an embodiment of the present application.

[0019] Figure 6 is a schematic diagram of the connection between the suction plate and the side plate in an embodiment of the present application.

[0020] Figure 7 is a schematic diagram of the linkage mechanism in an embodiment of the present application.

[0021] Figure 8 is Figure 7 is an enlarged schematic diagram of part A.

[0022] Figure 9 is a schematic diagram of the valve in an embodiment of the present application. DETAILED DESCRIPTION

[0023] Figure 1 、 Figure 2 and Figure 3 shows a diabetic foot infection wound flushing device. The device comprises a shell 1, a nozzle 2, a pump 3, an infusion pipe 4, a first roller 5a, a second roller 5b, and a suction plate 6.

[0024] The shell 1 includes two side plates 10 and a back handle 11. Its front 12, top 13 and bottom 14 are open structures.

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

[0026] The nozzle 2 is arranged on the top of the shell 1, specifically the nozzle 2 or the pump 3 integrated with it, connected with the two side plates 10 through the rotating shaft, realizing flexible adjustment of the pitch angle. The pump 3 is communicated with the disinfectant container through the infusion tube 4, and after starting, the liquid is atomized and sprayed from the nozzle 2. The switch controlling the pump 3 is installed on the handle 11, and the operator can directly start and stop the equipment through the holding part.

[0027] The clean cotton cloth 7 is wound on the first roller 5a, and after passing through the double sides of the suction plate 6, it is wound to the second roller 5b. The suction plate 6 serves as a contact platform for diabetic foot wounds and can adsorb the dirt after flushing. An auxiliary roller set 5c is arranged on the cotton cloth transmission path, located between the first roller 5a and the suction plate 6, used to adjust the cotton cloth running direction and improve the transmission stability. The first roller 5a, the second roller 5b and the auxiliary roller set 5c are all movably installed on the side plate 10 through bearings, and can freely rotate to adapt to the movement requirements of the cotton cloth.

[0028] In addition, the side plate 10 is composed of multiple plates, and 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 roll.

[0029] The device realizes continuous operation of wound cleaning and disinfection through directional flushing of the nozzle 2, immediate adsorption of the suction plate 6 and automatic replacement of the cotton cloth 7. The detachable side plate design further improves the maintenance efficiency of the equipment, which is suitable for rapid processing requirements in clinical scenes.

[0030] As shown in Figure 5 , the suction plate 6 adopts a hollow cavity design, and the side is closed to prevent liquid overflow, and the upper and lower surfaces are provided with a plurality of openings 60. When the surface-wound cotton cloth 7 adsorbs the contaminated liquid flowing from the diabetic foot wound, the liquid can penetrate into the inside of the suction plate 6 through the openings 60.

[0031] The suction plate 6 adopts a design of single-end fixed and one end suspended. The suction plate 6 is provided with a mounting shaft on both sides of one end, and the mounting shaft 63 is connected with the lower end of the two side plates 10 of the shell 1. The side plate 10 is correspondingly provided with a shaft hole 15, and the mounting shaft 63 is embedded in the shaft hole 15 to form a rotating pair, so that the suction plate 6 can swing in clockwise or counterclockwise direction. In order to realize the automatic reset function, a torsional spring 64 (refer to Figure 6 ) is assembled between the mounting shaft 63 and the shaft hole 15.

[0032] Natural state (first position): under the pre-tightening force of the torsion spring 64, the dirt-sucking plate 6 defaults to a slanting downward posture (refer to Figure 2 ).

[0033] Force state (second position): when the operator manually applies an external force (such as upward pushing), the dirt-sucking plate 6 can rotate clockwise around the mounting shaft 63, with the upper surface facing the nozzle 2 direction (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-sucking plate 6 to rotate counterclockwise to the slanting downward state, restoring the initial working position.

[0035] The dirt-sucking plate 6 is connected to the second roller 5b through the linkage mechanism 8. The linkage mechanism 8 adopts a one-way transmission design. When the dirt-sucking plate 6 rotates counterclockwise, the linkage mechanism 8 transmits this rotary motion to the second roller 5b, driving it to rotate counterclockwise synchronously, thereby winding the cotton cloth 7 after absorbing the contaminated liquid. Since the cotton cloth 7 is wound between the first roller 5a and the second roller 5b, the counterclockwise rotation of the second roller 5b will directly drive the first roller 5a to rotate counterclockwise synchronously through the tension of the cotton cloth 7, releasing the clean cotton cloth 7 to the surface of the dirt-sucking 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-sucking 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 only needs to pull the hanging end of the dirt-sucking plate 6 upward (in the clockwise direction) to overcome the pre-tightening force of the torsion spring 64, causing the dirt-sucking plate 6 to leave the slanting downward state. After releasing the dirt-sucking plate 6, it automatically rotates counterclockwise to the initial position under the action of the torsion spring 64. In this process, the linkage mechanism 8 triggers the second roller 5b to wind 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] As shown in Figure 7 , the linkage mechanism 8 includes a first gear 80, a second gear 81, a ratchet gear 82, a third gear 83, a fourth gear 84, and a rotating shaft 85.

[0039] The first gear 80 is coaxially connected with the mounting shaft 63 of the dirt sucking plate 6 and directly receives the rotation input of the dirt sucking plate 6. The second gear 81 is engaged with the first gear 80. The ratchet gear 82 is coaxially fixed on the rotating shaft 85 with the rotating direction consistent with the second gear 81. The third gear 83 is movably mounted on the rotating shaft 85 (freely rotatable) and engaged with the fourth gear 84. The fourth gear 84 is coaxially connected with the second roller 5b and directly drives the second roller 5b to wind the cotton. The rotating shaft 85 is supported by the two side plates 10 and serves as the rotating shaft of the second gear 81 and the ratchet gear 82.

[0040] As shown in Figure 8 The ratchet gear 82 is designed with a special tooth shape to realize one-way transmission. Each tooth 820 of the ratchet gear 82 extends outward from the body and is connected with the body through a spring 823 at the lower end, having a radial movement degree of freedom. The vertical face 821 and the inclined face 822 of the tooth 820 correspond to the contact faces in the clockwise and counterclockwise directions, respectively.

[0041] The side surface of the third gear 83 is provided with a protrusion 830 matched with the tooth 820, which is shaped to adapt to the vertical face 821 and the inclined face 822 of the tooth 820.

[0042] When the ratchet gear 82 rotates clockwise, the vertical face 821 of the tooth 820 is in contact with the vertical face 831 of the protrusion 830 of the third gear 83, pushing the third gear 83 to rotate clockwise synchronously, and then driving the second roller 5b to rotate counterclockwise through the fourth gear 84 to wind the cotton.

[0043] When the ratchet gear 82 rotates counterclockwise, the inclined face 822 of the tooth 820 is in contact with the arc face 832 of the protrusion 830 of the third gear 83, and the two are relatively sliding. The tooth 820 is retracted to the center during the sliding process and is separated from the protrusion 830; then, under the action of the spring 823, the tooth 820 is reset to the initial position, the third gear 83 remains stationary, the movement chain is disconnected, and the second roller 5b is not in action.

[0044] When the dirt sucking plate 6 is pulled upward, the second gear 81 and the ratchet gear 82 are driven to rotate counterclockwise through the first gear 80. At this time, the counterclockwise rotation of the ratchet 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 sucking plate 6 is reset, the second gear 81 and the ratchet gear 82 are driven to rotate clockwise by the first gear 80. The clockwise rotation of the ratchet gear 82 causes the vertical face 821 of the tooth 820 to engage with the protrusion 830 of the third gear 83, pushing the third gear 83 to rotate clockwise, and then driving the second roller 5b to rotate counterclockwise through the fourth gear 84 to wind the used cotton.

[0046] In a preferred embodiment, the inside of the suction plate 6 is accelerated to absorb the contaminated liquid by a negative pressure environment, preventing the suction plate 6 from being soaked in the contaminated liquid.

[0047] The infusion tube 4 is connected with the suction plate 6 through the air pipe 9, and a valve 40 is arranged in the infusion tube 4. When the pump 3 drives the sterilization liquid to flow to the nozzle 2, the valve 40 is opened, and the high-speed flowing liquid in the infusion tube 4 forms a negative pressure at the interface 44 by using the Venturi effect, thereby sucking the air inside the air pipe 9 and the suction plate 6 to establish a negative pressure environment. The sucked air is mixed with the sterilization liquid in the infusion tube 4, and finally sprayed from the nozzle 2 in a gas-liquid mixed state. In order to realize the Venturi effect, the connection section M (i.e. the installation position of the valve 40) of the infusion tube 4 and the air pipe 9 is designed as a tapered Venturi throat pipe.

[0048] As shown in Figure 9 , the valve 40 includes a bracket 41 fixed in the infusion tube 4, a movable valve core 42, and a return spring 43. During the operation of the pump 3, the high-pressure sterilization liquid pushes the valve core 42 to overcome the elastic force of the spring 43, opens the interface 44, and realizes the air connection. After the pump is stopped, the spring 43 drives the valve core 42 to reset and close the interface 44.

[0049] It should be noted that the air pipe 9 does not guide the contaminated liquid in the suction plate 6 into the infusion tube 4, because the air pipe 9 is installed on the upper surface of the suction plate 6 and the installation position is close to the end of the installation shaft 63 (far from the free end). As shown in Figure 2 , the suction plate 6 maintains an inclined posture of inclined downward in the normal state, at this time the connection position 61 of the air pipe 9 is at a relatively high position, and the contaminated liquid naturally flows to the free end under the action of gravity, forming a physical isolation. In the actual operation process, the sterilization liquid is sprayed in an atomized form, the spraying amount is small, most of which directly acts on the surface of the foot, and only a small amount of liquid droplets may penetrate into the suction plate 6 and be absorbed by the cotton cloth on the lower surface. Because the volume of the contaminated liquid is small, the liquid surface height is lower than the opening position of the air pipe 9 after accumulating on the lower surface, and the liquid is difficult to form effective accumulation in the suction plate 6.

[0050] In the use process, the liquid droplets may flow to the end of the installation shaft 63 due to the rotation of the suction plate 6 for replacing the cotton cloth. In order to prevent the liquid from gathering at the connection position 61 of the air pipe 9, a guide inclined surface 62 is specially arranged in the suction plate 6, as shown in Figure 5 When the suction plate 6 returns to the natural state of inclined downward, the guide inclined surface 62 can guide the liquid droplets gathered at this position to the side of the suction plate 6, and finally to the free end. It should be noted that most of the liquid droplets are absorbed by the cotton cloth in actual use, and it is difficult to form liquid accumulation in the suction plate 6. Even if a small amount of residual liquid is present, the user can clean and maintain the suction plate 6 in time by disassembling the cotton cloth.

[0051] The use method of the device of the present application is as follows:

[0052] 1. Automatic cotton replacement process:

[0053] Pre-cleaning preparation: manually rotate the suction plate 6 clockwise to the second position (refer to Figure 3 ), overcoming the pre-tightening force of the torsional spring 64. After loosening the suction plate 6, it rotates counterclockwise to the first position (refer to Figure 2 ) under the action of the torsional spring 64, triggering the second roller 5b to wind the used cotton, while the first roller 5a releases the clean cotton onto the surface of the suction plate 6, completing the automatic replacement.

[0054] 2. Multiple wound treatment strategy

[0055] 2.1 Wound isolation operation: place the free end of the suction plate 6 in the gap between the two wounds, with the nozzle 2 facing the upper wound.

[0056] 2.2 Step-by-step cleaning process:

[0057] Upper wound cleaning: start the pump 3, and spray the atomized disinfectant solution to the upper wound. The contaminated liquid is absorbed by the cotton 7 and enters the interior of the suction plate 6, avoiding flowing into the lower wound and preventing cross-infection. After cleaning the upper wound, repeat step 1 to replace the cotton and proceed to clean the lower wound.

[0058] Lower wound cleaning: move the foot to the top of the suction plate 6, adjust the direction of the nozzle 2 to align with the lower wound, and repeat the spraying of disinfectant solution. The contaminated liquid flows along the cotton 7 to the interior of the suction plate 6 and is quickly absorbed in the negative pressure environment.

[0059] The device can effectively collect the contaminated liquid flowing from a single wound and prevent it from spreading to adjacent wounds through the physical positioning of the suction plate and the negative pressure suction system. During operation, the free end of the suction plate can be placed against the gap between multiple wounds, forming a physical barrier to prevent the lateral flow of contaminated liquid. At the same time, the negative pressure environment generated by the Venturi effect in the interior of the suction plate (achieved by the cooperation of the infusion tube and the air tube) accelerates the absorption and fixation of the contaminated liquid, ensuring that the liquid does not overflow or drip onto other areas along the surface of the cotton. In addition, the cooperation of the linkage mechanism and the torsional spring achieves single coverage and automatic winding of the cotton, eliminating the need for repeated replacement or manual contact with the wound. The atomized disinfectant solution of the nozzle and the cotton on the surface of the suction plate work together to achieve cleaning through liquid penetration rather than mechanical friction, avoiding the local pressure stimulation of the healing area of the wound when the forceps pick up the cotton ball. In contrast, the traditional debridement method of picking up cotton balls with forceps easily leads to local swelling and inflammation due to repeated friction between the cotton ball and the wound. However, the device significantly reduces this risk through uniform pressure distribution and non-contact operation, making it particularly suitable for wounds with poor healing ability such as diabetic foot.

Claims

1. A device for irrigating a wound of a diabetic foot infection, characterized in that, The utility model relates to a disinfecting device for diabetic foot, comprising: a housing including side plates on two sides and a handle on the back; a nozzle mounted on the top of the side plate for atomizing disinfectant; a liquid delivery tube for delivering disinfectant to the nozzle; a pump connected to the nozzle and the liquid delivery tube to provide power for the delivery of disinfectant; a first roller provided between the two side plates for winding clean cotton; a suction plate for cleaning the surface of a diabetic foot infection, 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, naturally inclined downward; the inside of the suction plate is an empty structure, and the side is closed to prevent liquid from spilling out, and the upper and lower surfaces are provided with a plurality of openings to form a negative pressure environment inside; one end of the suction plate has two mounting shafts on both sides, and the two side plates each have a shaft hole matched with the two mounting shafts, and the mounting shafts are assembled in the shaft holes, so that the suction plate can rotate clockwise or counterclockwise; and a second roller located below the suction plate and provided between the two side plates for winding used cotton, the cotton on the first roller is wound onto the second roller after passing through the upper and lower surfaces of the suction plate, when the suction plate rotates clockwise to the nozzle, the first roller and the second roller remain stationary; when the suction plate rotates counterclockwise to the inclined downward state, the second roller rotates counterclockwise to wind the cotton on the surface of the suction plate, and the first roller rotates counterclockwise to release the cotton on it to the surface of the suction plate; the suction plate is connected to the second roller through a linkage mechanism, and the linkage mechanism comprises: a first gear coaxially connected to the mounting shaft of the suction plate to directly receive the rotation input of the suction plate; a second gear meshing with the first gear; a thorn gear coaxially fixed on a rotating shaft with the second gear, the rotation direction of the thorn gear being consistent with that of the second gear; a third gear movably mounted on the rotating shaft and freely rotatable, meshing with a fourth gear; and the fourth gear meshing with the third gear and coaxially connected to the second roller, and its rotation directly drives the second roller to wind cotton.

2. The device for washing the wound of the diabetic foot infection according to claim 1, characterized in that, The rotating shaft is supported by the two side plates and serves as the rotating shaft of the second gear and the thorn gear; each tooth of the thorn gear extends outward from the body and is connected to the body by a spring at the lower end, has a radial movement freedom, and includes a vertical surface perpendicular to the circumferential direction of the body and an inclined surface inclined relative to the circumferential direction of the body; the side surface of the third gear is provided with a protrusion matched with 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 is in contact with the vertical surface of the protrusion of the third gear, and the third gear is pushed to rotate clockwise synchronously, and then the second roller is driven to rotate counterclockwise by the fourth gear to roll up the cotton; when the thorn gear rotates counterclockwise, the inclined surface of the tooth is in contact with the arc surface of the protrusion, and the two surfaces slide relative to each other, the tooth is retracted to the center during the sliding process, and the tooth is separated from the protrusion, the third gear remains stationary, the movement chain is disconnected, the second roller is inoperative, and the tooth is reset to the initial position under the action of the spring after being separated from the protrusion.

3. The device for washing the wound of the diabetic foot infection according to claim 1, characterized in that, The air pipe is connected between the infusion pipe and the dirt suction plate, and the valve for connecting the infusion pipe and the air pipe is arranged in the infusion pipe; when the disinfectant flows to the nozzle, the valve is opened to form a Venturi effect between the infusion pipe and the air pipe, so that the air in the air pipe and the dirt suction plate is extracted to form the negative pressure environment.

4. The device for washing the wound of the diabetic foot infection according to claim 3, characterized in that, The valve includes a bracket fixed in the infusion pipe and a valve core movable in the infusion pipe, and the bracket and the valve core are connected by a reset spring; when the disinfectant flows to the nozzle, the valve core moves under the action of the disinfectant pressure to overcome the elastic force of the reset spring, opens the interface between the infusion pipe and the air pipe, and connects the infusion pipe and the air pipe.

5. The device for washing the wound of the diabetic foot infection according to claim 1, characterized in that, The corresponding part of the side plate corresponding to the first roller and the second roller is detachable, which facilitates replacement of the cotton roll.

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