A wound debridement care device

Abstract

The application provides a kind of wound debridement nursing device, belongs to medical appliance technical field, including base, the top of base is fixedly connected with top plate, the top of top plate is symmetrically connected with arc plate on both sides, the both sides of two arc plates are all provided with sliding slot, the surface of two arc plates is all provided with multiple limit holes at equal intervals, in the application, the top plate of base and the arc plate symmetrically arranged on both sides jointly constitute arc-shaped adjusting track, when mounting seat does arc-shaped sliding along arc plate through sliding slot, can be adjusted spray position and spray angle synchronously by fixed block driving spray head;The arc-shaped adjusting path is compatible with the outer contour of human body limbs, can cover the wound surface of different circumferential position of limbs, after patient's limbs are placed, body position does not need to be adjusted frequently, can complete the overall flushing of wound surface, both can reduce the pulling discomfort caused by limb movement to wound, also can simplify the operation steps of medical staff, improve the convenience of debridement operation.

Description

Technical Field

[0001] This invention relates to the medical field, specifically to a wound cleaning and care device. Background Technology

[0002] In surgical clinical nursing, wound debridement is one of the core steps in wound management. By rinsing the wound with debridement solutions, it is possible to effectively remove dirt, blood clots, and necrotic tissue attached to the wound surface, reduce the number of bacteria in the wound, lower the risk of infection, and provide a good foundation for subsequent wound healing.

[0003] In the existing technology, although some existing fixed debridement devices are equipped with fixed spray structures, the position adjustment of their spray components is relatively simple, and they can only achieve linear translation adjustment. The adjustment path is poorly adapted to the arc-shaped outer contour of the human limb, and cannot fully cover the wound surface at different positions around the limb. During operation, the patient needs to move the limb frequently to cooperate with the rinsing, which can easily cause secondary traction stimulation to unhealed wounds. The flexibility and comfort of use are both insufficient.

[0004] Based on this, the present invention designs a wound cleaning and care device to solve the above problems. Summary of the Invention

[0005] The problem to be solved by the present invention is to provide a wound cleaning and care device that addresses the above-mentioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wound cleaning and care device includes a base, a top plate fixedly connected to the top of the base, and two curved plates fixedly connected to both sides of the top plate. Each of the two curved plates has a sliding groove on both sides and multiple limiting holes equidistantly formed on the surface of each of the two curved plates. A mounting base is slidably connected to the top of the two curved plates via the sliding grooves. A fixing block is fixedly connected to the center of the lower part of the mounting base, and a spray head is fixedly connected to the lower part of the fixing block.

[0008] Preferably, the mounting base has two slidably connected limit rods on both sides, and springs are sleeved on the outside of the two limit rods. A synchronous handle is fixedly connected above the two limit rods, and the ends of the limit rods are engaged with the limit holes.

[0009] Preferably, arm supports are fixedly connected to both sides above the top plate.

[0010] Preferably, a waste liquid tank, a medicine tank, and a water pump are fixedly connected to the top of the base.

[0011] Preferably, the input end of the water pump is fixedly connected to the lower side of one side of the medicine box, and the output end of the water pump is fixedly connected to a hose, with the end of the hose away from the water pump fixedly connected to one side of the fixing block.

[0012] Preferably, a flow guide is fixedly connected to the top of the waste liquid tank, and the flow guide is fixedly connected to the bottom of the top plate.

[0013] Preferably, a push handle is fixedly connected to one side of the base.

[0014] Preferably, casters are fixedly connected to the four corners of the base. Preferably, a flexible pressure-sensitive pad is embedded inside the arc-shaped plate. The flexible pressure-sensitive pad is continuously laid along the arc-shaped extension direction of the arc-shaped plate. Multiple piezoresistive sensing units are equidistantly arranged inside the flexible pressure-sensitive pad, and each piezoresistive sensing unit corresponds to the position of each limiting hole. A first signal transceiver module is fixedly connected to the bottom of the mounting base. The first signal transceiver module is signal-connected to each piezoresistive sensing unit. The first signal transceiver module is used to receive the positioning signal generated by the piezoresistive sensing unit at the corresponding position of the limiting hole when the limiting rod is inserted into the corresponding limiting hole, and to send the positioning signal outward.

[0015] Preferably, a hand-held pressure sensing strip is fixedly connected to the top of the synchronized handle. The hand-held pressure sensing strip integrates a thin-film pressure sensor, which is used to detect the grip pressure value when the operator holds the synchronized handle. A miniature vibration indicator is fixedly connected to the top of the mounting base. The miniature vibration indicator is signal-connected to the thin-film pressure sensor. When the grip pressure value exceeds a preset threshold, the miniature vibration indicator generates intermittent vibration. A miniature power supply electrically connected to the miniature vibration indicator is also fixedly connected to the top of the mounting base.

[0016] Preferably, an acceleration sensing module is fixedly embedded inside the mounting base. The acceleration sensing module is used to detect the instantaneous acceleration value and sliding direction data of the mounting base when it slides along the slide groove in real time. A micro display screen and a microprocessor are fixedly connected to the top of the mounting base. The microprocessor is connected to the acceleration sensing module and the micro display screen respectively. The microprocessor calculates the real-time sliding displacement of the mounting base based on the instantaneous acceleration value and sliding direction data, and displays the real-time sliding displacement in digital form on the micro display screen.

[0017] Preferably, an infrared distance sensing module is fixedly connected to the lower part of the spray head. The detection direction of the infrared distance sensing module is towards the limb placement area below. The infrared distance sensing module is used to detect the vertical distance value between the spray head and the limb wound below in real time. A second signal transceiver module and a miniature buzzer are fixedly connected to one side of the fixing block. The second signal transceiver module is connected to the infrared distance sensing module and the miniature buzzer respectively. When the vertical distance value exceeds the preset safe distance range, the miniature buzzer emits a warning beep.

[0018] Preferably, a first weight sensing module is fixedly connected to the bottom of the medicine box, a second weight sensing module is fixedly connected to the bottom of the waste liquid tank, and a weight comparator and a third signal transceiver module are fixedly connected to the top of the base. The first and second weight sensing modules are respectively connected to the weight comparator. An inlet pipe is fixedly connected to the top of the side wall of the medicine box, and a sealing cap is threaded onto the top of the inlet pipe. A drain pipe is fixedly connected to the bottom of the side wall of the waste liquid tank, and a manual valve is fixedly connected to the top of the drain pipe. The weight comparator is used to calculate the difference between the real-time weight of the medicine box detected by the first weight sensing module and the real-time weight of the waste liquid tank detected by the second weight sensing module, and transmits the difference calculation result outward through the third signal transceiver module.

[0019] Preferably, a seepage observation groove is provided in the middle of the top plate, the seepage observation groove is located between the two arc-shaped plates, a transparent observation plate is fixedly connected to the inner wall of the seepage observation groove, the upper surface of the transparent observation plate is flush with the upper surface of the top plate, a white color-developing backing plate is fixedly connected below the transparent observation plate, and the surface of the color-developing backing plate is coated with a water-reactive color-developing coating; a lateral drainage hole is provided inside the top plate on the side of the seepage observation groove, one end of the lateral drainage hole is connected to the inside of the seepage observation groove, and the other end of the lateral drainage hole is connected to the inside of the flow guide shroud.

[0020] Preferably, longitudinal guide rails are fixedly connected to both sides of the seepage observation tank above the top plate, and a movable bracket is slidably connected between the two longitudinal guide rails. A bidirectional lead screw is rotatably connected to the middle of the movable bracket, and a knob is fixedly connected to one end of the bidirectional lead screw. A left clamping plate and a right clamping plate are respectively threaded onto the two reverse threads of the bidirectional lead screw. The left clamping plate and the right clamping plate are slidably connected to the movable bracket. A silicone pad is fixedly connected to the opposite side of the left clamping plate and the right clamping plate. An auxiliary handle is fixedly connected to the top of the movable bracket.

[0021] Compared with the prior art, the beneficial effects of this invention are as follows:

[0022] 1. In this invention, the top plate above the base and the symmetrically arranged arc-shaped plates on both sides together form an arc-shaped adjustment track. When the mounting seat slides along the arc-shaped plate through the sliding groove, the spray head can be driven by the fixing block to adjust the spray position and spray angle synchronously. This arc-shaped adjustment path is adapted to the outer contour of the human limb and can cover the wound surface at different circumferential positions of the limb. After the patient's limb is placed, there is no need to frequently adjust the body position to complete the comprehensive cleaning of the wound surface. This can reduce the traction discomfort caused to the wound by limb movement, simplify the operation steps of medical staff, and improve the convenience of debridement operation.

[0023] 2. In this invention, with the synchronous locking structure consisting of a limiting rod, a spring, and a synchronous handle, the limiting rods on both sides can be unlocked synchronously by pulling the synchronous handle with one hand. After releasing the synchronous handle, the spring's elastic restoring force can automatically complete the locking and positioning, making the position adjustment process simple and efficient. The symmetrical locking design on both sides can make the mounting base bear the force evenly, avoiding positional deviation caused by unilateral fixation, ensuring the positional stability of the spray head during operation, and allowing the rinsing solution to act stably on the wound surface, improving the uniformity of wound cleaning and rinsing.

[0024] 3. In this invention, the guide hood above the waste liquid tank is fixedly connected to the bottom of the top plate, which can collect and guide the waste liquid after rinsing the wound and collect it in a closed manner, effectively preventing the rinsing waste liquid from splashing and dripping everywhere, keeping the operating table and the surrounding environment clean, and reducing the risk of cross-infection caused by the wound coming into contact with the waste liquid; at the same time, the centrally collected waste liquid is convenient for subsequent unified disposal and disinfection, simplifying the postoperative cleaning process for medical staff and improving the efficiency of nursing work.

[0025] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0026] Figure 1 A three-dimensional wound cleaning and care device according to the present invention Figure 1 ;

[0027] Figure 2 A front view of a wound cleaning and care device according to the present invention. Figure 2 ;

[0028] Figure 3 This is a partial structural diagram of a wound cleaning and care device according to the present invention;

[0029] Figure 4 This is a schematic diagram showing the connection relationship between the limiting rod, the spring, and the synchronous handle in a wound cleaning and care device of the present invention;

[0030] Figure 5 for Figure 1 A magnified structural diagram of region A in the middle.

[0031] Figure 6 This is a schematic diagram of the component frame.

[0032] Figure 7 This is a schematic diagram of the seepage observation tank. Detailed Implementation

[0033] To make the technical means, creative features, objectives, and effects of this invention clearer and easier to understand, the invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0034] This invention proposes a wound cleaning and care device, comprising a base 1, a top plate 12 fixedly connected to the top of the base 1, and two arc-shaped plates 14 fixedly connected to both sides of the top plate 12. Each side of the two arc-shaped plates 14 has a sliding groove 15, and multiple limiting holes 16 are equidistantly formed on the surface of each arc-shaped plate 14. A mounting base 17 is slidably connected to the top of the two arc-shaped plates 14 via the sliding grooves 15. A fixing block 21 is fixedly connected to the center of the lower part of the mounting base 17, and a spray head 22 is fixedly connected below the fixing block 21. Limiting rods 18 are slidably connected to both sides inside the mounting base 17, and springs 19 are sleeved on the outside of each of the two limiting rods 18. A synchronous handle 2 is fixedly connected to the top of the two limiting rods 18, and the ends of the limiting rods 18 are engaged with the limiting holes 16.

[0035] In this embodiment, the top plate 12 fixed above the base 1 provides a stable mounting and bearing foundation for the upper functional components. The symmetrically arranged arc-shaped plates 14 on both sides of the top plate 12 form an arc-shaped adjustment track. Through the cooperation of the sliding grooves 15 opened on the arc-shaped plates 14 and the multiple equidistantly distributed limiting holes 16, the mounting base 17 can slide smoothly along the arc-shaped path of the sliding grooves 15, thereby driving the spray head 22 below the fixing block 21 to synchronously adjust the spray position and spray angle. This arc-shaped adjustment path is adapted to the outer contour of the human limb, which can cover the wound surface at different circumferential positions of the limb. After the patient's limb is placed, the wound surface can be thoroughly rinsed without frequent adjustment of posture. This can reduce the traction discomfort caused by limb movement to the wound, reduce the operation steps of medical staff, and improve the convenience of debridement.

[0036] The mounting base 17 is internally equipped with a locking structure consisting of double-sided limiting rods 18, springs 19, and a synchronous handle 2. Pulling the synchronous handle 2 simultaneously causes the limiting rods 18 to slide and retract within the mounting base 17, releasing the locking between the limiting rods 18 and the limiting holes 16, thus quickly unlocking the mounting base 17. After adjusting to the target position, releasing the synchronous handle 2 causes the limiting rods 18 to extend outwards and engage with the corresponding limiting holes 16 under the elastic reset action of the springs 19, completing the positioning and fixing of the mounting base 17. This structure allows for unlocking and locking with one hand, making the adjustment process simple and efficient. The symmetrical limiting design on both sides ensures balanced force on the mounting base 17, avoiding problems such as mounting base misalignment and spray angle deviation caused by unilateral locking. This improves the positional stability of the spray head 22 during operation, ensuring the irrigation solution can stably act on the wound surface and guaranteeing the uniformity of wound cleaning and irrigation.

[0037] Example 2

[0038] In some embodiments, please refer to the appendix to the instruction manual. Figures 1-5 A wound cleaning and care device includes arm supports 13 fixedly connected to both sides above the top plate 12, a waste liquid tank 26 and a medicine tank 25 and a water pump 24 fixedly connected above the top plate 12, an input end of the water pump 24 and a lower side of the medicine tank 25 fixedly connected, a hose 23 fixedly connected to the output end of the water pump 24, a hose 23 fixedly connected to the end of the hose 23 away from the water pump 24 and a fixed block 21, a flow guide 27 fixedly connected above the waste liquid tank 26 and a fixed communication between the flow guide 27 and the lower part of the top plate 12, a push handle 10 fixedly connected to one side of the base 1, and casters 11 fixedly connected to the four corners below the base 1.

[0039] In this embodiment, the arm supports 13 provided on both sides above the top plate 12 can stably support the patient's upper limbs, allowing the patient's limbs to maintain a natural and relaxed posture during the debridement process, effectively relieving the soreness and fatigue caused by prolonged limb elevation, and improving the patient's comfort during the treatment process; at the same time, the arm supports 13 can restrict the random shaking of the limbs, keeping the wound to be cleaned within a stable irrigation area, preventing limb displacement that would cause the irrigation solution to deviate from the wound surface, and ensuring the operational accuracy and irrigation effect of the debridement and irrigation.

[0040] The integrated medicine tank 25, water pump 24, and hose 23 on the upper part of the base 1 form an integrated automatic fluid supply circuit. The water pump 24 can directly draw wound cleaning solution from the medicine tank 25, continuously deliver it to the fixed block 21 through the hose 23, and spray it out from the spray head 22. Medical staff do not need to manually hold the rinsing instrument and repeatedly dip it into the solution, which greatly reduces the intensity of operation. At the same time, it can ensure the stable output pressure and flow of the rinsing solution, and improve the uniformity and cleaning effect of wound cleaning. The flexible hose 23 can adapt to the arc-shaped sliding of the mounting base 17, and will not interfere with the position adjustment of the spray head 22, ensuring the continuity and stability of the fluid supply during the position adjustment process.

[0041] The guide hood 27 above the waste liquid tank 26 is connected to the bottom of the top plate 12. During the wound cleaning process, the waste liquid after rinsing the wound can flow down along the top plate 12 and be collected and guided by the guide hood 27 before flowing into the waste liquid tank 26, thus achieving closed collection of waste liquid.

[0042] In operation, medical staff hold the push handle 10 on one side of the base 1 and use the casters 11 at the four corners of the base 1 to move the device to the treatment position and place it in place. The patient places their upper limb on the arm supports 13 on both sides above the top plate 12. The arm supports 13 support and limit the limb, so that the wound to be cleaned is in the rinsing area below the spray head 22, keeping the limb in a stable position.

[0043] When the spray position needs to be adjusted to suit different wound locations, pull the synchronous handle 2 upwards. This synchronously drives the limiting rods 18 on both sides of the mounting base 17 to slide inwards, while simultaneously compressing the spring 19 sleeved on the outside of the limiting rods 18. This causes the end of the limiting rod 18 to disengage from the corresponding limiting hole 16 on the arc plate 14, releasing the locking between the mounting base 17 and the arc plate 14. Then, push the mounting base 17 to slide in an arc shape along the sliding grooves 15 on the two arc plates 14. The mounting base 17 drives the spray head 22 to move synchronously along the arc trajectory through the fixing block 21 in the middle of its lower part. This adjusts the circumferential position and spray angle of the spray head 22 relative to the wound, ensuring that the rinsing range accurately covers the wound. During the adjustment process, the hose 23 connected to the fixing block 21 can adapt to the displacement of the mounting base 17 by bending accordingly, without interfering with the sliding adjustment.

[0044] After adjusting to the target position, release the synchronous handle 2. Under the elastic reset force of the spring 19, the limit rods 18 on both sides slide outward synchronously and are locked into the corresponding limit holes 16, thus completing the positioning and locking of the mounting base 17. This ensures the stability of the spray head 22 during subsequent spraying and rinsing, and prevents deviation and shaking.

[0045] After the water pump 24 above the base 1 is started, the water pump 24 draws debridement solution from the medicine tank 25 through the input end, and continuously delivers it to the fixed block 21 through the hose 23 at the output end of the water pump 24. Finally, it is sprayed evenly downwards from the spray head 22 to continuously rinse and clean the wound surface below, achieving the removal of dirt and necrotic tissue from the wound surface. The waste liquid generated after rinsing the wound flows downwards along the top plate 12, and is collected and guided by the guide hood 27 which is fixedly connected to the bottom of the top plate 12. After that, it flows into the waste liquid tank 26 below the guide hood 27, completing the closed collection of debridement waste liquid and preventing waste liquid from splashing and dripping everywhere and contaminating the treatment environment.

[0046] After the debridement operation is completed, the water pump 24 can be turned off to stop the rinsing. After the patient moves the limb, the device can be moved to the storage area again by pushing the handle 10 and the casters 11. The waste liquid collected in the waste liquid tank 26 can be regularly poured out and disinfected.

[0047] Example 3

[0048] A top plate 12 is bolted to the top of the base 1. Two arc-shaped plates 14 are welded to the top of the top plate 12 on both sides. These two arc-shaped plates 14 are positioned opposite each other with the same curvature, forming an arc-shaped guide rail that conforms to the outer contour of the human upper limb. Each arc-shaped plate 14 has a through-groove 15 on both its inner and outer sides, extending along the arc surface of the arc-shaped plate 14. Multiple limiting holes 16 are equidistantly spaced on the upper surface of the two arc-shaped plates 14 along the arc direction. These limiting holes 16 are circular blind holes or through holes, with a spacing of 10mm to 20mm between adjacent limiting holes 16. A mounting base 17 is slidably connected above the two arc-shaped plates 14 via the sliding grooves 15. The mounting base 17 has an inverted U-shaped structure, with its inner walls on both sides embedded in the sliding grooves 15 of the two arc-shaped plates 14, allowing it to slide along the sliding grooves 15 in an arc shape. A fixing block 21 is fixedly connected to the lower center of the mounting base 17 by screws. A spray head 22 is fixedly connected to the lower part of the fixing block 21. The spray direction of the spray head 22 is towards the limb placement area below.

[0049] The mounting base 17 has a hollow interior structure. Two limiting rods 18 are slidably connected to its two sides. These two limiting rods 18 are horizontally arranged and parallel to each other. Each limiting rod 18 is fitted with a spring 19. One end of the spring 19 abuts against the shoulder of the limiting rod 18, and the other end abuts against the inner wall of the mounting base 17. The spring 19 is always in a compressed state to provide an outward elastic thrust. A synchronous handle 2 is fixedly connected above the two limiting rods 18. The synchronous handle 2 is horizontally positioned above the mounting base 17. When the operator pulls the synchronous handle 2 upwards with one hand, it synchronously drives the two limiting rods 18 to slide back into the mounting base 17, overcoming the elastic force of the springs 19. The end of the limiting rod 18 is hemispherical or conical, which matches the shape of the limiting hole 16. When the mounting base 17 slides along the arc plate 14 to the target position, the synchronous handle 2 is released. Under the action of the restoring force of the spring 19, the end of the limiting rod 18 extends outward and is inserted into the corresponding limiting hole 16, thereby realizing the positioning and locking of the mounting base 17.

[0050] The top plate 12 above the base 1 and the symmetrically arranged arc-shaped plates 14 on both sides together form an arc-shaped adjustment track. When the mounting base 17 slides along the arc-shaped plate 14 via the sliding groove 15, the spray head 22 can be driven by the fixing block 21 to synchronously adjust the spray position and spray angle. This arc-shaped adjustment path is adapted to the outer contour of the human limb, which can cover wound surfaces at different circumferential positions of the limb. After the patient's limb is placed, there is no need to frequently adjust the body position to complete the thorough cleaning of the wound. This can reduce the traction discomfort caused to the wound by limb movement, simplify the operation steps of medical staff, and improve the convenience of debridement. Meanwhile, with the synchronous locking structure consisting of the limiting rod 18, spring 19 and synchronous handle 2, the limiting rods 18 on both sides can be unlocked synchronously by pulling the synchronous handle 2 with one hand. After releasing the synchronous handle 2, the spring 19 can automatically complete the locking and positioning by relying on its elastic restoring force. The position adjustment process is simple and efficient. The symmetrical locking design on both sides can make the mounting base 17 bear the force evenly, avoid the position displacement caused by unilateral fixation, ensure the positional stability of the spray head 22 when working, and enable the rinsing solution to act stably on the wound surface, improving the uniformity of wound cleaning and rinsing.

[0051] Arm supports 13 are bolted to both sides of the top plate 12. The arm supports 13 are made of medical-grade polyurethane material and have an arc-shaped support surface adapted to the human forearm or upper arm, with a silicone pad attached to the support surface. A waste liquid tank 26, a medicine tank 25, and a water pump 24 are bolted to the top of the base 1. The medicine tank 25 is a transparent medical plastic box with a filling port and a sealing cap for storing wound cleaning solutions. The water pump 24 is a miniature diaphragm pump. Its input end is fixedly connected to the lower side of the medicine tank 25 via a pipe. The output end of the water pump 24 is fixedly connected to a flexible medical silicone hose 23. The hose 23 is flexible and bendable. The end of the hose 23 away from the water pump 24 is fixedly connected to the side of the fixing block 21, and the internal channel of the hose 23 is connected to the liquid flow channel inside the fixing block 21 and the spray head 22. After the water pump 24 is started, the wound cleaning solution in the medicine tank 25 can be continuously delivered to the spray head 22 through the hose 23 and sprayed out.

[0052] The arm supports 13 located on both sides above the top plate 12 provide stable support for the patient's upper limbs, allowing the limbs to maintain a natural and relaxed posture during debridement, effectively relieving soreness and fatigue caused by prolonged limb elevation and improving patient comfort during treatment. Simultaneously, the arm supports 13 restrict limb movement, keeping the wound to be cleaned within a stable irrigation area and preventing limb displacement that could cause the irrigation solution to deviate from the wound surface, ensuring the precision and effectiveness of the debridement and irrigation process. The medicine tank 25, water pump 24, and hose 23 form an integrated automatic fluid supply circuit, eliminating the need for medical personnel to manually hold and repeatedly dip the irrigation instruments into the solution, significantly reducing operational intensity. This also ensures stable output pressure and flow rate of the irrigation solution, improving the uniformity and cleaning effect of the debridement and irrigation. The flexible hose 23 adapts to the arc-shaped sliding of the mounting base 17, preventing interference with the position adjustment of the spray head 22 and ensuring continuous and stable fluid supply during position adjustment.

[0053] A flow guide hood 27 is fixedly connected to the top of the waste liquid tank 26. The flow guide hood 27 has a funnel-shaped structure that is wider at the top and narrower at the bottom, and its upper opening is fixedly connected to the lower part of the top plate 12. Specifically, a vertically penetrating drain port is opened in the middle of the top plate 12, and the lower end of the drain port is sealed to the upper end of the flow guide hood 27. The lower end of the flow guide hood 27 is inserted into the interior of the waste liquid tank 26 or sealed to the opening of the top cover of the waste liquid tank 26. A push handle 10 is fixedly connected to one side of the base 1 by bolts. The push handle 10 is U-shaped or T-shaped, making it easy for medical personnel to hold and move. Universal wheels 11 are fixedly connected to the four corners of the base 1 by screws. The universal wheels 11 are medical silent universal wheels with brakes, which can realize flexible movement and parking of the device.

[0054] The guide hood 27 above the waste fluid tank 26 is fixedly connected to the bottom of the top plate 12, which can collect and guide the waste fluid after rinsing the wound and collect it in a closed manner, effectively preventing the rinsing waste fluid from splashing and dripping everywhere, keeping the operating table and surrounding environment clean, and reducing the risk of cross-infection caused by the wound coming into contact with waste fluid. At the same time, the centrally collected waste fluid is convenient for subsequent unified disposal and disinfection, simplifying the postoperative cleaning process for medical staff and improving the efficiency of nursing work. The push handle 10 on one side of the base 1 and the universal wheels 11 at the four corners make the entire device flexibly moved to different beds or examination rooms according to the needs of diagnosis and treatment, so that bedside debridement can be carried out without moving the patient. It is especially suitable for postoperative patients with limited mobility, further improving the ease of use and clinical applicability of the device.

[0055] A flexible pressure-sensing pad 28 is embedded inside the arc-shaped plate 14. The flexible pressure-sensing pad 28 uses a polydimethylsiloxane film as a substrate and is continuously laid on the inner side of the upper surface of the arc-shaped plate 14 along the arc-shaped extension direction. Multiple piezoresistive sensing units 29 are evenly arranged inside the flexible pressure-sensing pad 28. The piezoresistive sensing units 29 are made of carbon nanotube-doped piezoresistive composite material. The spacing between adjacent piezoresistive sensing units 29 is equal to the spacing between adjacent limiting holes 16, and each piezoresistive sensing unit 29 corresponds vertically to the position of each limiting hole 16. When the end of the limiting rod 18 is inserted into a limiting hole 16, the end of the limiting rod 18 applies downward pressure to the flexible pressure-sensing pad 28 at the bottom of the limiting hole 16, causing a change in the resistance value of the corresponding piezoresistive sensing unit 29. A first signal transceiver module 3 is fixedly connected to the lower part of the mounting base 17. The first signal transceiver module 3 is a low-power Bluetooth module or a ZigBee module, which is connected to each piezoresistive sensing unit 29 via a flexible circuit board. The first signal transceiver module 3 is used to receive the positioning signal (i.e., resistance change signal) generated by the piezoresistive sensing unit 29 at the corresponding position of the limiting hole 16 when the limiting rod 18 is engaged in the corresponding limiting hole 16, and send the positioning signal to an external care terminal or display to realize remote real-time display of the current position of the shower head 22.

[0056] Through the flexible pressure-sensing pad 28 embedded inside the arc-shaped plate 14 and the equidistantly arranged piezoresistive sensing units 29, when the limiting rod 18 is engaged in the limiting hole 16, the pressure at the end of the limiting rod can be accurately captured by the sensing unit at the corresponding position and generate a positioning signal, realizing the automatic sensing and remote reporting of the current position of the mounting base 17 and the spray head 22. This structure eliminates the need for medical staff to visually estimate the position of the spray head, and is especially suitable for recording and reproducing the debridement position when the same patient undergoes multiple debridements or when different patients alternate using the same device. The current spray angle and position can be directly obtained through an external terminal, which facilitates nursing staff to accurately align the spray head with the wound position according to the medical record, avoids repeated trial and error adjustments, and further improves the intelligence and operational efficiency of debridement and irrigation.

[0057] A handheld pressure sensing strip 31 is fixedly connected to the top of the synchronous handle 2 via adhesive or clips. The handheld pressure sensing strip 31 is a flexible, elongated structure covered with a medical-grade silicone layer. A thin-film pressure sensor 32 is integrated inside the handheld pressure sensing strip 31. The thin-film pressure sensor 32 is a piezoresistive thin-film sensor, and its sensing area covers the entire length of the handheld pressure sensing strip 31, used to detect the grip pressure applied to the handheld pressure sensing strip 31 when the operator grips the synchronous handle 2. A miniature vibration indicator 33 is fixedly connected to the top of the mounting base 17. The miniature vibration indicator 33 uses a miniature eccentric motor or a linear resonant motor, and is connected to the thin-film pressure sensor 32 via a signal line. The miniature vibration indicator 33 has a built-in comparison circuit. When the grip pressure exceeds a preset threshold (e.g., 5N), the miniature vibration indicator 33 generates intermittent vibration (e.g., vibrating once every 0.5 seconds) to alert the operator that the current grip force is too large, which may cause excessive compression of the spring 19 or increased sliding resistance of the limit rod 18. Above the mounting base 17, a miniature power supply 34, which is electrically connected to the miniature vibration indicator 33, is also fixedly connected. The miniature power supply 34 is a button battery or a miniature lithium battery, which supplies power to the miniature vibration indicator 33.

[0058] A hand-held pressure sensing strip 31 and a thin-film pressure sensor 32 are installed above the synchronous handle 2. These sensors can detect the gripping force in real time when the operator pulls the handle 2. When the gripping force exceeds a preset threshold, a micro-vibration indicator 33 generates intermittent vibrations to promptly remind the operator to reduce the gripping force. This effectively prevents excessive compression of the spring 19, which could lead to plastic deformation, or the limiting rod 18, which could become stuck. This extends the service life of the locking structure and also prevents scratches and wear between the end of the limiting rod 18 and the surface of the arc-shaped plate 14 caused by forced sliding due to insufficient gripping force. This force sensing and feedback mechanism is particularly suitable for force adaptation when different operators alternate using the same device, ensuring the smoothness and consistency of the unlocking operation and improving the reliability of the device.

[0059] An acceleration sensing module 35 is embedded inside the mounting base 17 using potting compound. The acceleration sensing module 35 is a triaxial MEMS accelerometer (such as the ADXL3 type), with a measurement range of ±2g, used to detect the instantaneous acceleration value and sliding direction data of the mounting base 17 as it slides along the slide groove 15 in real time. A micro-display 36 and a microprocessor 37 are fixedly connected to the top of the mounting base 17 by screws. The micro-display 36 is a 0.96-inch OLED micro-screen, and the microprocessor 37 is a low-power ARM Cortex-M0 core microcontroller. The microprocessor 37 is connected to the acceleration sensing module 35 and the micro-display 36 via an I2C bus signal. The microprocessor 37 has a built-in displacement calculation algorithm. By performing a double integration on the instantaneous acceleration value output by the acceleration sensing module 35 and combining it with the sliding direction data, it calculates the real-time sliding displacement of the mounting base 17 relative to its initial position. The microprocessor 37 displays the calculated real-time sliding displacement digitally on the micro-display 36 in millimeters (mm) with an accuracy of 0.5mm. When the operator is sliding the mounting base 17, they can observe the displacement value on the micro display screen 36 to accurately know the distance the spray head 22 moves along the arc plate 14, which makes it easy to quickly position it to the preset target position.

[0060] An accelerometer module 35 is embedded inside the mounting base 17. Combined with the integral calculations of the microprocessor 37, it can acquire the precise displacement of the mounting base 17 sliding along the arc-shaped plate 14 in real time, even without external distance references, and display it intuitively on the micro display screen 36. This design provides medical staff with a precise quantitative reference when adjusting the position of the spray head 22, and is particularly suitable for scenarios requiring segmented irrigation of the wound at preset intervals. Nurses can slide the spray head 22 sequentially at fixed displacement intervals (e.g., every 20mm) to achieve uniform coverage irrigation of the wound, avoiding overlapping or wasted medication due to haphazard sliding. Furthermore, this displacement feedback mechanism eliminates the need for complex structures such as external optical scales or laser rangefinders, resulting in low cost and high integration, demonstrating significant practicality and economy.

[0061] An infrared distance sensing module 38 is fixedly connected to the lower part of the shower head 22 by adhesive or clips. The infrared distance sensing module 38 uses a Sharp GP2Y0A21 infrared ranging sensor, and its detection direction is towards the limb placement area below (i.e., the direction of the limb supported by the arm support 13). The infrared distance sensing module 38 is used to detect the vertical distance between the liquid outlet end of the shower head 22 and the wound surface of the limb below in real time. The measurement range is 10cm~80cm, and the output is an analog voltage signal. A second signal transceiver module 39 and a miniature buzzer 4 are fixedly connected to one side of the fixing block 21 by screws. The second signal transceiver module 39 is a Bluetooth module with an integrated analog-to-digital converter, which is connected to the infrared distance sensing module 38 and the miniature buzzer 4 respectively. The second signal transceiver module 39 has a built-in safe distance range threshold (e.g., 15cm~35cm). When the vertical distance value detected by the infrared distance sensor module 38 exceeds the preset safe distance range (i.e., less than 15cm or greater than 35cm), the second signal transceiver module 39 drives the miniature buzzer 4 to emit an intermittent warning buzzer (e.g., buzzer frequency 2Hz) to remind the operator that the current shower head 22 is too close or too far from the wound surface, and that the height of the patient's limb or the position of the shower head 22 needs to be adjusted. At the same time, the second signal transceiver module 39 sends the distance value that exceeds the range to the nursing terminal.

[0062] An infrared distance sensor module 38 is fixed below the spray head 22, which can monitor the vertical distance between the spray head 22 and the limb wound in real time. When the distance exceeds the safe range, a warning buzzer 4 is emitted, effectively preventing the spray head 22 from being too close to the wound, causing excessive impact of the medicine and damaging the newly formed granulation tissue, or from being too far away, causing the medicine to be lost through atomization and insufficient rinsing force. This active distance warning mechanism is particularly suitable for rapid adaptation when alternating patients of different body types. It eliminates the need for nursing staff to make adjustments based on experience and visual judgment, effectively ensuring that the rinsing medicine acts on the wound at an appropriate distance and with appropriate impact force, improving the safety and standardization of debridement operations.

[0063] A first weight sensing module 41 is fixedly connected to the bottom of the medicine box 25. The first weight sensing module 41 is a cantilever beam resistance strain gauge load cell with a range of 0~5kg. A second weight sensing module 42 is fixedly connected to the bottom of the waste liquid tank 26. The second weight sensing module 42 is a load cell of the same model as the first weight sensing module 41 with a range of 0~10kg. A weight comparator 43 and a third signal transceiver module 44 are fixedly connected to the top of the base 1. The weight comparator 43 is a microprocessor module integrating differential amplifier circuit and comparator circuit. The first weight sensing module 41 and the second weight sensing module 42 are respectively connected to the weight comparator 43 via analog signal lines. An inlet pipe is fixedly connected to the top of the side wall of the medicine box 25. The inlet pipe extends upward and is higher than the top of the medicine box 25. A sealing cap 46 is threadedly connected to the top of the inlet pipe to facilitate the replenishment of wound cleaning solution. A drain pipe 47 is fixedly connected to the lower side wall of the waste liquid tank 26. The drain pipe 47 extends horizontally outward, and a manual valve 48 is fixedly connected to the upper part of the drain pipe 47 to control the discharge of waste liquid.

[0064] The weight comparator 43 is used to calculate the difference between the real-time weight of the medicine tank 25 detected by the first weight sensor module 41 and the real-time weight of the waste fluid tank 26 detected by the second weight sensor module 42. Specifically, it calculates the difference between the real-time weight of the medicine tank 25 and the real-time weight of the waste fluid tank 26. This difference calculation result reflects the dynamic balance between the amount of medication consumed and the amount of waste fluid generated during the wound cleaning process. The weight comparator 43 sends the difference calculation result to the nursing terminal or nurse station display screen via the third signal transceiver module 44. When the difference exceeds the preset normal fluctuation range (e.g., ±200g), the nursing terminal can issue a prompt, reminding medical staff to check for abnormalities such as medication leakage, nozzle blockage 22 blockage, or poor waste fluid drainage.

[0065] A first weight sensor module 41 and a second weight sensor module 42 are respectively installed at the bottom of the medicine tank 25 and the waste fluid tank 26. These, along with a weight comparator 43, calculate the real-time weight difference between the two, dynamically monitoring the weight balance between medication consumption and waste fluid collection during the wound cleaning process. This design automatically senses whether the spray head 22 is dispensing fluid normally and whether waste fluid is being successfully collected. An abnormally large difference may indicate that the spray head 22 is blocked or the hose 23 is bent, preventing the medication from being sprayed out normally. An abnormally small difference may indicate that the waste fluid tank 26 is not properly sealed or the flow guide 27 is blocked, causing waste fluid leakage. This intelligent monitoring mechanism helps medical staff detect equipment malfunctions promptly, preventing wound cleaning failures due to spray head blockage or environmental pollution due to waste fluid leakage. Simultaneously, centralized weight data reporting facilitates centralized management of multiple devices, improving the informatization level of nursing management.

[0066] An exudate observation groove 5 is provided in the center of the upper part of the top plate 12. The exudate observation groove 5 is a rectangular or oblong groove located in the central area between the two arc-shaped plates 14 and between the arm supports 13. A transparent observation plate 51 is fixedly connected to the inner wall of the exudate observation groove 5 with sealant. The transparent observation plate 51 is made of transparent polycarbonate sheet with a thickness of 3mm to 5mm. The upper surface of the transparent observation plate 51 is flush with the upper surface of the top plate 12 to ensure that there is no step sensation when the patient's limb is placed. A white color-developing backing plate 52 is fixedly connected to the lower part of the transparent observation plate 51. The color-developing backing plate 52 is made of white ABS plastic sheet and its surface is coated with a water-reactive color-developing coating 53. The water-reactive color-developing coating 53 is a mixture of anhydrous copper sulfate and silica gel. This coating is white in the dry state and turns blue after contact with water. The color change reaction is irreversible or has very low reversibility, which facilitates the observation by nursing staff afterward. The top plate 12 has a lateral drainage hole 54 on the side of the seepage observation tank 5. The lateral drainage hole 54 is a circular through hole that is inclined downwards, with an inner diameter of 3mm to 5mm. One end of the lateral drainage hole 54 is connected to the interior of the seepage observation tank 5 (specifically, it is connected to the bottom of the side wall of the seepage observation tank 5), and the other end of the lateral drainage hole 54 is connected to the interior of the guide shroud 27. When medicine or seepage flows into the seepage observation tank 5 during rinsing, the liquid can be discharged into the guide shroud 27 through the lateral drainage hole 54 to avoid liquid accumulation.

[0067] By creating an exudate observation tank 5 in the middle of the top plate 12, and placing a transparent observation plate 51 and a white color-developing liner 52 with a water-reactive color coating 53 below it, when there is exudate from the patient's limb wound or when rinsing fluid drips down the limb into the observation tank, the water-reactive color coating 53 changes from white to blue upon contact with water, which can be directly observed by nursing staff through the transparent observation plate 51. This design provides medical staff with an intuitive visual indication of wound leakage, allowing for quick assessment of abnormal wound exudate and whether rinsing fluid has overflowed along the limb during or after debridement. It is particularly suitable for preliminary assessment of wound exudation before postoperative wound dressing. Simultaneously, the lateral drainage hole 54 can promptly guide the accumulated fluid in the observation tank into the drainage hood 27, preventing prolonged retention of fluid from excessively wetting the color-developing coating and interfering with subsequent observation. Furthermore, no additional drainage pipes are required, making the structure simple and reliable.

[0068] On both sides of the seepage observation tank 5, longitudinal guide rails 55 are bolted to the top plate 12. The longitudinal guide rails 55 extend along the front-back direction of the top plate 12 and are parallel to each other. A movable bracket 56 is slidably connected between the two longitudinal guide rails 55. The movable bracket 56 has an inverted U-shaped frame structure, with its lower ends embedded in the slides of the two longitudinal guide rails 55, allowing it to slide back and forth along the longitudinal guide rails 55. A double-acting screw 57 is rotatably connected to the middle of the movable bracket 56 via a bearing seat. The double-acting screw 57 is horizontally positioned and perpendicular to the longitudinal guide rails 55. A knob 58 is fixedly connected to one end of the double-acting screw 57, located on the outside of the movable bracket 56 for easy rotation by the operator. The two reverse threads of the bidirectional lead screw 57 are respectively threaded to a left clamping plate 59 and a right clamping plate 6. The upper ends of both the left clamping plate 59 and the right clamping plate 6 are slidably connected to the crossbeam of the movable support 56 (through the engagement of guide grooves). When the knob 58 is rotated, the left clamping plate 59 and the right clamping plate 6 can move synchronously towards each other or away from each other. A silicone pad 61 with a thickness of 2mm to 4mm is fixedly connected to the opposite side of the left clamping plate 59 and the right clamping plate 6, which is used for flexible contact with the healthy skin on both sides of the wound. An auxiliary handle 62 is fixedly connected to the top of the movable support 56. The auxiliary handle 62 is an arc-shaped handle, which is convenient for the operator to hold and push the movable support 56 back and forth along the longitudinal guide rail 55.

[0069] In use, the operator uses the auxiliary handle 62 to push the movable support 56 along the longitudinal guide rail 55 to the area directly above the wound. Then, rotating the knob 58 drives the bidirectional lead screw 57 to rotate, causing the left clamp 59 and the right clamp 6 to move towards each other synchronously until the silicone pads 61 on both sides contact the healthy skin on both sides of the wound and apply slight pressure. This achieves slight stretching and fixation of the skin tissue around the wound, fully exposing the wound surface for precise rinsing by the spray head 22. After cleaning, rotating the knob 58 in the opposite direction releases the clamps.

[0070] By setting up a left clamp 59 and a right clamp 6 driven by a longitudinal guide rail 55, a movable bracket 56, and a bidirectional screw 57, the healthy skin on both sides of the wound can be slightly stretched and fixed before the spray head 22 rinses, allowing the wound edges to spread outward and the wound surface to be fully exposed. This effectively avoids the problem of incomplete rinsing due to skin folds or looseness obscuring parts of the wound surface, and is especially suitable for irregularly shaped wounds or active wounds located near joints. This stretching mechanism also facilitates subsequent dressing changes—after debridement, dressings or ointments can be applied to the wound more accurately. With the movable bracket 56, which can slide along the longitudinal guide rail 55, the operator can move the stretching component in or out without moving the patient's limb, providing a clear view and ample working space for dressing changes. The flexible contact between the silicone pad 61 and the healthy skin avoids secondary damage to the wound edges caused by clamping force, and the synchronous centering clamping of the bidirectional screw 57 ensures that the stretching force on both sides is uniform, effectively improving the debridement and rinsing effect and the convenience of subsequent dressing changes.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A wound cleaning and care device, comprising a base (1), characterized in that: A top plate (12) is fixedly connected to the top of the base (1). Arc plates (14) are fixedly connected to both sides of the top plate (12). Slide grooves (15) are provided on both sides of the two arc plates (14). Multiple limiting holes (16) are provided at equal intervals on the surface of the two arc plates (14). A mounting base (17) is slidably connected to the top of the two arc plates (14) through the slide grooves (15). A fixing block (21) is fixedly connected to the middle of the bottom of the mounting base (17). A spray head (22) is fixedly connected to the bottom of the fixing block (21). Limiting rods (18) are slidably connected to both sides inside the mounting base (17). Springs (19) are sleeved on the outside of the two limiting rods (18). A synchronous handle (2) is fixedly connected to the top of the two limiting rods (18). The end of the limiting rod (18) is engaged with the limiting hole (16).

2. The wound cleaning and care device according to claim 1, characterized in that, Arm supports (13) are fixedly connected to both sides above the top plate (12); a waste liquid tank (26), a medicine tank (25), and a water pump (24) are fixedly connected above the base (1); the input end of the water pump (24) is fixedly connected to the lower side of the medicine tank (25), and a hose (23) is fixedly connected to the output end of the water pump (24); the end of the hose (23) away from the water pump (24) is fixedly connected to the side of the fixing block (21).

3. The wound cleaning and care device according to claim 2, characterized in that, A flow guide (27) is fixedly connected above the waste liquid tank (26), and the flow guide (27) and the bottom of the top plate (12) are fixedly connected; a push handle (10) is fixedly connected to one side of the base (1); and casters (11) are fixedly connected to the four corners below the base (1).

4. The wound cleaning and care device according to claim 1, characterized in that, The interior of the arc plate (14) is embedded with a flexible pressure sensing pad (28). The flexible pressure sensing pad (28) is continuously laid along the arc extension direction of the arc plate (14). Multiple piezoresistive sensing units (29) are arranged equidistantly inside the flexible pressure sensing pad (28). Each piezoresistive sensing unit (29) corresponds to the position of each limiting hole (16). A first signal transceiver module (3) is fixedly connected to the bottom of the mounting base (17). The first signal transceiver module (3) is signal connected to each piezoresistive sensing unit (29). The first signal transceiver module (3) is used to receive the positioning signal generated by the piezoresistive sensing unit (29) at the corresponding position of the limiting hole (16) when the limiting rod (18) is inserted into the corresponding limiting hole (16), and send the positioning signal outward.

5. The wound cleaning and care device according to claim 4, characterized in that, A hand-held pressure sensing strip (31) is fixedly connected above the synchronous handle (2). A thin-film pressure sensor (32) is integrated inside the hand-held pressure sensing strip (31). The thin-film pressure sensor (32) is used to detect the grip pressure value when the operator holds the synchronous handle (2). A miniature vibration indicator (33) is fixedly connected above the mounting base (17). The miniature vibration indicator (33) is signal-connected to the thin-film pressure sensor (32). When the grip pressure value exceeds a preset threshold, the miniature vibration indicator (33) generates intermittent vibration. A miniature power supply (34) that is electrically connected to the miniature vibration indicator (33) is also fixedly connected above the mounting base (17).

6. The wound cleaning and care device according to claim 1, characterized in that, An acceleration sensing module (35) is fixedly embedded inside the mounting base (17). The acceleration sensing module (35) is used to detect the instantaneous acceleration value and sliding direction data of the mounting base (17) when it slides along the slide groove (15) in real time. A micro display screen (36) and a micro processor (37) are fixedly connected above the mounting base (17). The micro processor (37) is connected to the acceleration sensing module (35) and the micro display screen (36) respectively. The micro processor (37) calculates the real-time sliding displacement of the mounting base (17) based on the instantaneous acceleration value and sliding direction data, and displays the real-time sliding displacement in digital form on the micro display screen (36).

7. The wound cleaning and care device according to claim 2, characterized in that, An infrared distance sensing module (38) is fixedly connected to the lower part of the spray head (22). The detection direction of the infrared distance sensing module (38) is towards the limb placement area below. The infrared distance sensing module (38) is used to detect the vertical distance value between the spray head (22) and the limb wound below in real time. A second signal transceiver module (39) and a miniature buzzer (4) are fixedly connected to one side of the fixing block (21). The second signal transceiver module (39) is connected to the infrared distance sensing module (38) and the miniature buzzer (4) respectively. When the vertical distance value exceeds the preset safe distance range, the miniature buzzer (4) emits a warning buzzer.

8. The wound cleaning and care device according to claim 2, characterized in that, A first weight sensing module (41) is fixedly connected to the bottom of the medicine box (25), a second weight sensing module (42) is fixedly connected to the bottom of the waste liquid tank (26), a weight comparator (43) and a third signal transceiver module (44) are fixedly connected to the top of the base (1), the first weight sensing module (41) and the second weight sensing module (42) are respectively connected to the weight comparator (43); an inlet pipe is fixedly connected to the top of the side wall of the medicine box (25), and the inlet pipe... A sealing cap (46) is threaded on the top; a drain pipe (47) is fixedly connected to the lower side wall of the waste liquid tank (26), and a manual valve (48) is fixedly connected to the top of the drain pipe (47); the weight comparator (43) is used to calculate the difference between the real-time weight of the medicine box (25) detected by the first weight sensing module (41) and the real-time weight of the waste liquid tank (26) detected by the second weight sensing module (42), and send the difference calculation result outward through the third signal transceiver module (44).

9. The wound cleaning and care device according to claim 1, characterized in that, A seepage observation groove (5) is provided in the middle of the top plate (12). The seepage observation groove (5) is located between the two arc-shaped plates (14). A transparent observation plate (51) is fixedly connected to the inner wall of the seepage observation groove (5). The upper surface of the transparent observation plate (51) is flush with the upper surface of the top plate (12). A white color-developing liner (52) is fixedly connected to the bottom of the transparent observation plate (51). The surface of the color-developing liner (52) is coated with a water-reactive color-developing coating (53). A lateral drainage hole (54) is provided on the side of the seepage observation groove (5) inside the top plate (12). One end of the lateral drainage hole (54) is connected to the inside of the seepage observation groove (5), and the other end of the lateral drainage hole (54) is connected to the inside of the guide shroud (27).

10. The wound cleaning and care device according to claim 9, characterized in that, On both sides of the seepage observation tank (5) above the top plate (12), there are longitudinal guide rails (55). A movable bracket (56) is slidably connected between the two longitudinal guide rails (55). A two-way screw (57) is rotatably connected to the middle of the movable bracket (56). A knob (58) is fixedly connected to one end of the two-way screw (57). A left clamping plate (59) and a right clamping plate (6) are threaded onto the reverse threads at both ends of the two-way screw (57). The left clamping plate (59) and the right clamping plate (6) are slidably connected to the movable bracket (56). A silicone pad (61) is fixedly connected to the opposite side of the left clamping plate (59) and the right clamping plate (6). An auxiliary handle (62) is fixedly connected to the top of the movable bracket (56).

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