An auxiliary medicine applying device for treating rheumatism and immunity

Abstract

The application belongs to the technical field of medical auxiliary instrument, and discloses an auxiliary medicine applying device for treating rheumatism and immunity, which comprises a base body, a medicine applying roller and a medicine storage cylinder connected to the base body, the medicine storage cylinder is communicated with the top of the medicine applying roller through a medicine guide pipe, and the medicine guide pipe is connected with a mechanical sliding valve; a linkage assembly is arranged between the medicine applying roller and the base body, the linkage assembly comprises a spring and an arc-shaped cover plate, and a transmission assembly is arranged between the medicine applying roller and the medicine storage cylinder, so as to convert the rolling of the roller into the linear motion of a piston to quantitatively extrude the ointment. Through the synergistic effect of the linkage conduction mechanism, the rolling quantitative extrusion mechanism and the bidirectional continuous medicine feeding mechanism, the application has the advantages of labor-saving operation, accurate medicine feeding, uniform application, bidirectional continuous operation and the like, and is suitable for the self-help medicine applying demand of rheumatism and immunity patients on joints, skin folds and the like.

Description

Technical Field

[0001] This invention relates to the field of medical auxiliary device technology, specifically to an auxiliary drug application device for the treatment of rheumatic and immune diseases. Background Technology

[0002] Rheumatic and immunological diseases are a group of autoimmune diseases characterized by chronic inflammation of the joints, bones, muscles, and surrounding soft tissues. Common types include systemic lupus erythematosus, rheumatoid arthritis, osteoarthritis, gout, and psoriatic arthritis. These diseases often affect the small joints of the limbs, knees, and spine, with patients experiencing joint swelling, pain, and morning stiffness. In severe cases, they can lead to joint deformities and loss of function. Topical ointments (such as nonsteroidal anti-inflammatory drugs and corticosteroid ointments) are first-line treatments for relieving local symptoms, offering advantages such as rapid onset of action and minimal systemic side effects.

[0003] Currently, the application of topical ointments mainly relies on manual operation. The common practice is to first squeeze a certain amount of ointment from the tube onto the fingers or affected skin, and then repeatedly rub and spread the ointment onto the affected area with the palm or fingers. However, this method of application has many shortcomings in practical application:

[0004] (1) Poor uniformity of application and low drug utilization. When applied manually, the thickness of the ointment on the skin surface is extremely uneven. It tends to accumulate more in areas with high stress, while it cannot be applied to joint depressions or bony prominences. This results in inconsistent drug absorption, insufficient efficacy in some areas, and potential skin irritation or drug waste in areas where the ointment accumulates.

[0005] (2) Difficulty in treating special areas, making it difficult for patients to take care of themselves. Rheumatic and immunological diseases often affect the shoulder and back, lumbosacral region, the back of the knee (popliteal fossa), and skin folds. These areas are either in the blind spot of the patient or difficult to reach due to limited joint movement, making it impossible for the patient to apply the medication independently.

[0006] (3) Existing auxiliary application devices have limited functions. Existing simple application tools, such as long-handled rollers with sponge heads or fixed application plates, mostly only extend the operating distance. The application process is cumbersome and it is difficult to ensure the continuity and uniformity of the application process. Summary of the Invention

[0007] This invention aims to provide an auxiliary medication application device for the treatment of rheumatic and immune diseases. It utilizes a drug storage cylinder to store medication, which drips through a drug delivery tube onto the surface of an application roller. By pressing down and pushing the roller, the medication can be applied to the affected area. This device is effective for applying medication to joints, skin folds, and other areas. The medication is applied evenly, and the rolling motion of the roller also promotes drug absorption. This invention solves the problems in the prior art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An auxiliary drug application device for the treatment of rheumatic immune diseases includes a base, a drug application roller and a drug storage cylinder connected to the base, the drug application roller being disposed below the drug storage cylinder and rotatably connected to the base, a drug delivery tube being connected to the outlet of the drug storage cylinder, the drug outlet end of the drug delivery tube being disposed above the drug application roller, and a mechanical sliding valve controlling its conduction state being connected to the drug delivery tube; the drug application roller and the base are connected by a linkage assembly, the linkage assembly including an arc-shaped cover plate and a spring, the base... The body has an adjustment hole. One end of the spring is connected to the upper inner wall of the adjustment hole, and the free end of the spring is connected to the arc-shaped cover plate. The connecting shaft of the medicine-applying roller is slidably disposed inside the adjustment hole. The end of the arc-shaped cover plate away from the spring rolls against the connecting shaft of the medicine-applying roller. The valve stem of the mechanical sliding valve is connected to the arc-shaped cover plate. When the arc-shaped cover plate moves upward, the valve stem moves upward to open the mechanical sliding valve. When the arc-shaped cover plate moves downward, the valve stem moves downward to close the mechanical sliding valve.

[0010] Furthermore, a transmission assembly is provided between the connecting shaft of the medicine storage cylinder and the medicine application roller, and a piston is slidably and sealed to the inner side of the medicine storage cylinder. The transmission assembly converts the rolling motion of the medicine application roller into the linear motion of the piston inside the medicine storage cylinder.

[0011] Furthermore, the transmission assembly includes a worm, a worm wheel, a gear, a rack, and a connecting rod. The worm, worm wheel, and gear are all rotatably connected to the base body, while the rack and connecting rod are slidably connected to the base body. The worm wheel meshes with the worm, and the rack meshes with the gear. The connecting rod is connected to the end of the piston away from the drug storage cylinder. The worm is connected to the connecting shaft of the drug coating roller, and the worm wheel is coaxially connected to the gear.

[0012] Furthermore, the connecting shaft of the coating roller is fixedly connected to a drive pulley, and the worm gear is coaxially fixedly connected to a driven pulley. The driven pulley and the drive pulley are connected by a transmission belt. The base is also connected to a protective shell located on the outside of the driven pulley, the drive pulley, and the transmission belt.

[0013] Furthermore, there are two of each of the medicine storage cylinder and the transmission assembly, and both medicine storage cylinders and the two transmission assemblies are arranged symmetrically in mirror image with the vertical center plane of the medicine coating roller as the reference plane; the outlets of the two medicine storage cylinders are connected to the medicine guide pipe through a three-way pipe.

[0014] Furthermore, the worm gear is rotatably mounted on the inner side of the base via a transmission shaft, and the gear is connected to the transmission shaft via a one-way bearing. The one-way bearings of the two transmission components are installed in opposite directions. When the coating roller rotates clockwise, the left gear rotates with the rotation of the transmission shaft, pushing the piston towards the side closer to the storage cylinder under the action of the left rack and connecting rod, squeezing out the medicine stored inside the left storage cylinder. At this time, the right gear does not rotate with the rotation of the transmission shaft, and thus the right piston remains stationary relative to the storage cylinder. When the coating roller rotates counterclockwise, the right gear rotates with the rotation of the transmission shaft, pushing the piston towards the side closer to the storage cylinder under the action of the right rack and connecting rod, squeezing out the medicine stored inside the right storage cylinder. At this time, the left gear does not rotate with the rotation of the transmission shaft, and thus the left piston remains stationary relative to the storage cylinder.

[0015] Furthermore, a slot is fixedly connected to the inner side of the base, and the rack is provided with a protrusion that cooperates with the slot, the protrusion being slidably disposed on the inner side of the slot.

[0016] Furthermore, the valve stem slides through the arc-shaped cover plate, the drug outlet end of the drug guide tube is connected to a flexible tube with several through holes, the outer wall of the flexible tube is connected to the arc-shaped cover plate, and the flexible tube is located directly above the drug application roller.

[0017] Furthermore, the width of the adjusting hole is the same as the diameter of the connecting shaft of the coating roller, and the inner diameter of the arc surface of the arc-shaped cover plate is the same as the diameter of the connecting shaft of the coating roller.

[0018] Furthermore, a handle is connected to the upper side of the base, the medicine storage cylinder is located inside the base, and the base is connected to a cover for opening and / or closing its upper opening; a placement groove is connected to the inner side of the base, and the medicine storage cylinder is detachably connected to the inner side of the placement groove.

[0019] The principles and beneficial effects of the technical solution are as follows:

[0020] 1. The present invention provides an auxiliary drug application device for the treatment of rheumatic immune diseases. The drug storage cylinder stores ointment for the treatment of rheumatic immune diseases. The drug application roller is rotatably connected to the base. The outlet of the drug storage cylinder is connected to the upper side of the drug application roller through a drug guide tube. The base has an adjustment hole. A spring is connected to the adjustment hole and an arc-shaped cover plate. The connecting shaft of the drug application roller is slidably disposed inside the adjustment hole. The arc-shaped cover plate rolls against the connecting shaft of the drug application roller. The valve stem of a mechanical sliding valve is connected to the arc-shaped cover plate. During use, hold the base and gently press the application roller onto the affected skin, then push it to roll. Under pressure, the roller's connecting shaft moves upward within the adjusting hole, pushing the arc-shaped cover plate upward against the spring force. The arc-shaped cover plate then moves the valve stem upward, opening the mechanical sliding valve. The ointment in the storage cylinder flows through the guide tube to the upper side of the application roller. As the roller rolls, the ointment is evenly applied to the affected area. When the roller lifts off the skin, the spring pushes the arc-shaped cover plate back to its original position, and the valve stem moves downward to close the mechanical sliding valve, stopping the dispensing. This achieves on-demand medication control—"press to dispense, lift to stop"—effectively avoiding waste and contamination caused by ointment flowing out naturally due to gravity when not in use. The user only needs to push the roller normally for automatic application, making it simple to operate and especially suitable for even application to irregular areas such as joints and skin folds.

[0021] 2. This invention provides an auxiliary medication application device for the treatment of rheumatic and immune diseases. A transmission assembly is provided between the connecting shaft of the medication storage cylinder and the medication application roller. A piston is slidably and sealed to the inner side of the medication storage cylinder. The transmission assembly converts the rolling motion of the medication application roller into linear motion of the piston inside the medication storage cylinder. When the medication application roller rolls, the connecting shaft drives the worm gear to rotate, the worm gear drives the gear to rotate, the gear drives the rack to move linearly, and the rack pushes the piston towards the inner side of the medication storage cylinder through a connecting rod, thereby extruding the ointment from the outlet of the medication storage cylinder. This transmission assembly utilizes the large reduction ratio and self-locking characteristics of the worm gear to precisely convert the rolling motion of the medication application roller into quantitative feeding of the piston. This ensures that a fixed volume of ointment is extruded with each rotation of the medication application roller, achieving linear quantitative drug administration of "how much is rolled, how much is extruded." This avoids waste or insufficient efficacy caused by inaccurate dosage during manual extrusion, improving the accuracy of drug administration and drug utilization.

[0022] 3. This invention provides an auxiliary drug application device for the treatment of rheumatic and immune diseases, comprising two drug storage cylinders and two transmission components, both arranged symmetrically mirror-symmetrically with respect to the vertical center plane of the drug application roller. The outlets of the two drug storage cylinders are connected to the drug delivery pipe via a three-way pipe. A worm gear is rotatably mounted on the inner side of the base via a transmission shaft, and a gear is connected to the transmission shaft via a one-way bearing, with the one-way bearings of the two transmission components installed in opposite directions. When the drug application roller rotates clockwise, the transmission shaft on the left drives the gear on the left to rotate (the gear on the right rotates freely), and the rack and connecting rod on the left push the piston on the left to move inward toward the drug storage cylinder, squeezing out the ointment in the left drug storage cylinder. When the drug application roller rotates counterclockwise, the transmission shaft on the right drives the gear on the right to rotate (the gear on the left rotates freely), and the rack and connecting rod on the right push the piston on the right to move inward toward the drug storage cylinder, squeezing out the ointment in the right drug storage cylinder. This structure ensures that a compression drug delivery component is always operational, continuously dispensing ointment regardless of whether the application roller rolls in the forward or reverse direction, achieving bidirectional continuous drug delivery. Patients can repeatedly apply the medication without interruption, greatly improving the convenience and efficiency of the application process, especially suitable for scenarios requiring repeated rubbing to promote drug absorption.

[0023] 4. This invention provides an auxiliary drug application device for the treatment of rheumatic and immune diseases. The connecting shaft of the drug application roller is fixedly connected to a driving pulley, and a driven pulley is coaxially fixedly connected to a worm gear. The driven pulley and the driving pulley are connected by a transmission belt. This belt drive structure is simple, low-cost, easy to install and maintain, and has a certain overload protection function. The protective shell effectively prevents foreign objects from entering the transmission mechanism, ensuring the stability and reliability of the transmission. Simultaneously, a groove is fixedly connected to the inner side of the base, and the rack has protrusions that cooperate with the groove. The protrusions slide inside the groove, and the groove guides and limits the movement of the protrusions / rack to ensure the smoothness and accuracy of the rack's linear movement, thereby ensuring the smoothness of the piston movement and the uniformity of drug application.

[0024] 5. This invention provides an auxiliary medication application device for the treatment of rheumatic and immune diseases. A valve stem slides through an arc-shaped cover plate. The drug outlet end of a drug delivery tube is connected to a flexible tube with several through holes. The outer wall of the flexible tube is connected to the arc-shaped cover plate, and the flexible tube is positioned directly above the medication application roller. When the arc-shaped cover plate moves upward, the flexible tube moves upward synchronously with the arc-shaped cover plate, forming a gap with the surface of the medication application roller. The ointment flows out from the through holes of the flexible tube and drips or spreads evenly on the surface of the medication application roller. When the arc-shaped cover plate returns to its original position, the flexible tube moves downward, contacting or approaching the surface of the medication application roller, stopping the drug dispensing. This structure links valve control with the drug dispensing position, further ensuring the controllability of drug dispensing and the uniformity of application. Furthermore, the width of the adjusting hole is the same as the diameter of the connecting shaft of the medication application roller, and the inner diameter of the arc surface of the arc-shaped cover plate is the same as the diameter of the connecting shaft of the medication application roller, ensuring the stability of the connecting shaft's movement within the adjusting hole and the reliability of the contact between the arc-shaped cover plate and the connecting shaft, thus improving the overall stability of the device.

[0025] 6. This invention provides an auxiliary medication application device for the treatment of rheumatic and immune diseases. The base is connected to a handle, allowing for medication application by holding the handle. A cover is connected to the base for opening and / or closing its upper opening. A storage groove is connected to the inner side of the base, and a medication storage cartridge is detachably connected to the inner side of the storage groove. This allows the medication storage cartridge to be easily removed for cleaning, replacement, or replenishment of the ointment. The cover prevents dust contamination, improving the hygiene and maintainability of the device. Furthermore, users can select different types of ointment to replace as needed, expanding the device's applicability. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an auxiliary drug application device for the treatment of rheumatic and immune diseases according to the present invention;

[0027] Figure 2 This is a front view of an auxiliary drug application device for the treatment of rheumatic and immune diseases according to the present invention;

[0028] Figure 3 for Figure 2 Sectional view of AA;

[0029] Figure 4 for Figure 3 Sectional view of BB;

[0030] Figure 5 This is a cross-sectional view of an auxiliary drug application device for the treatment of rheumatic and immune diseases according to the present invention;

[0031] Figure 6 for Figure 5 Sectional view of CC;

[0032] Figure 7 for Figure 5 A sectional view of DD.

[0033] The names of the corresponding labels in the attached diagram are:

[0034] 1. Substrate; 2. Coating roller; 3. Drug storage cylinder; 4. Drug guide tube; 5. Hose; 6. Handle; 7. Cover; 8. Arc-shaped cover plate; 9. Spring; 10. Mechanical sliding valve; 11. Valve stem; 12. Driving pulley; 13. Drive belt; 14. Protective shell; 15. Worm; 16. Worm wheel; 17. Drive shaft; 18. Gear; 19. One-way bearing; 20. Rack; 21. Slot; 22. Connecting rod; 23. Piston; 24. Placement trough; 25. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0036] like Figures 1 to 7 As shown, an auxiliary drug application device for the treatment of rheumatic immune diseases includes a base 1. The base 1 is connected to a drug application roller 2, a drug storage cylinder 3, a handle 6, and a cover 7. The drug application roller 2 is rotatably connected to the lower side of the base 1, and the drug storage cylinder 3 is installed on the inner side of the base 1 and located above the drug application roller 2. The handle 6 is fixed to the rear side of the base 1 for hand operation. The cover 7 is hinged to the upper opening of the base 1 for opening or closing the upper opening of the base 1.

[0037] The outlet of the medicine storage cylinder 3 is connected to a medicine guide tube 4, and the medicine outlet end of the medicine guide tube 4 is connected to a flexible tube 5. Multiple through holes are opened on the tube wall of the flexible tube 5, and the flexible tube 5 is arranged directly above the medicine application roller 2. A mechanical sliding valve 10 is connected to the medicine guide tube 4 to control the opening and closing of the medicine guide tube 4.

[0038] A linkage assembly is provided between the coating roller 2 and the substrate 1. A vertical adjustment hole is provided on each of the left and right sides of the substrate 1, and the connecting shafts at both ends of the coating roller 2 are slidably installed in these two adjustment holes. The linkage assembly includes an arc-shaped cover plate 8 and a spring 9. The upper end of the spring 9 is fixed to the upper inner wall of the adjustment hole, and the lower end of the spring 9 is connected to the upper surface of the arc-shaped cover plate 8. The lower end of the arc-shaped cover plate 8 is an arc-shaped surface, which rolls against the connecting shaft of the coating roller 2. The valve stem 11 of the mechanical sliding valve 10 slides through the arc-shaped cover plate 8, and the outer wall of the hose 5 is fixedly connected to the arc-shaped cover plate 8. When the arc-shaped cover plate 8 moves upward, the valve stem 11 is driven upward, thereby opening the mechanical sliding valve 10. At the same time, the hose 5 is lifted upward with the arc-shaped cover plate 8, forming a dispensing gap between it and the surface of the coating roller 2. When the arc-shaped cover plate 8 moves downward, the valve stem 11 closes the mechanical sliding valve 10 downward, and the hose 5 descends and contacts the surface of the coating roller 2.

[0039] A transmission assembly is provided between the connecting shaft of the medicine storage cylinder 3 and the medicine application roller 2. A piston 24 is slidably and sealed on the inner side of the medicine storage cylinder 3. The transmission assembly is used to convert the rolling motion of the medicine application roller 2 into the linear motion of the piston 24 within the medicine storage cylinder 3. Specifically, the transmission assembly includes a worm 16, a worm wheel 17, a gear 19, a rack 21, and a connecting rod 23. The worm 16, worm wheel 17, and gear 19 are all rotatably mounted on the base 1. The rack 21 and the connecting rod 23 are slidably mounted on the base 1, with the worm wheel 17 meshing with the worm 16 and the rack 21 meshing with the gear 19. One end of the connecting rod 23 is fixedly connected to the rack 21, and the other end is connected to the rear end of the piston 24. A groove 22 is also fixed on the inner side of the base 1. The rack 21 has a protrusion that mates with the groove 22. The protrusion is slidably embedded in the groove 22 to ensure the linear motion of the rack 21. A drive pulley 12 is fixedly mounted on the connecting shaft of the coating roller 2, and a driven pulley 13 is fixedly mounted coaxially on the worm gear 16. The drive pulley 12 and the driven pulley 13 are connected by a transmission belt 14. A protective shell 15 is also fixed on the base 1, covering the outside of the drive pulley 12, the driven pulley 13 and the transmission belt 14.

[0040] In this embodiment, two sets of medicine storage cylinders 3 and two sets of transmission assemblies are provided. The two sets of medicine storage cylinders 3 and the two sets of transmission assemblies are arranged symmetrically in mirror image with the vertical center plane of the medicine application roller 2 as the reference plane. The outlets of the two sets of medicine storage cylinders 3 are connected to the medicine guide pipe 4 through a three-way pipe. The worm gear 17 is rotatably mounted on the inner side of the base 1 through a transmission shaft 18, and the gear 19 is connected to the transmission shaft 18 through a one-way bearing 20. The one-way bearings 20 in the two sets of transmission assemblies are installed in opposite directions: the one-way bearing 20 on the left is locked and transmits torque only when the transmission shaft 18 rotates clockwise (viewed from the left), and the one-way bearing 20 on the right is locked and transmits torque only when the transmission shaft 18 rotates counterclockwise. Therefore, when the application roller 2 rolls clockwise, the left gear 19 rotates with the drive shaft 18, the left rack 21 and connecting rod 23 push the left piston 24 forward, squeezing out the ointment in the left storage cylinder 3, while the right gear 19 idles; when the application roller 2 rolls counterclockwise, the right gear 19 rotates with the drive shaft 18, the right rack 21 and connecting rod 23 push the right piston 24 forward, squeezing out the ointment in the right storage cylinder 3, while the left gear 19 idles.

[0041] The inner side of the base 1 is also provided with a placement trough 25, and the medicine storage cylinder 3 is detachably installed in the placement trough 25 for easy removal for cleaning or replacement of the ointment. The width of the adjusting hole is equal to the diameter of the connecting shaft of the medicine application roller 2, and the arc-shaped inner diameter of the arc-shaped cover plate 8 is also equal to the diameter of the connecting shaft of the medicine application roller 2 to ensure smooth movement.

[0042] The specific implementation process is as follows:

[0043] Before using this application device, open the cover 7 and place the ointment-filled reservoir 3 (or directly inject ointment into the reservoir 3) into the placement tank 25, ensuring that the piston 24 is in sealed contact with the inner wall of the reservoir 3. Connect the outlet of the reservoir 3 to the delivery tube 4, and then close the cover 7. The patient holds the handle 6 and gently presses the application roller 2 onto the affected skin (such as the knee joint, shoulder, back, or skin folds). The connecting shaft of the application roller 2 moves upward against the elastic force of the spring 9 within the adjusting hole, pushing the arc-shaped cover 8 upward. The arc-shaped cover 8 drives the valve stem 11 upward to open the mechanical sliding valve 10. At the same time, the hose 5 is lifted upward with the arc-shaped cover 8, forming a gap between it and the application roller 2. Then, push the handle 6 to roll the application roller 2 on the skin.

[0044] As the application roller 2 rolls, its connecting shaft drives the drive pulley 12 to rotate, which in turn drives the driven pulley 13 and worm gear 16 to rotate via the transmission belt 14. The worm gear 16 drives the worm wheel 17 to rotate, and the worm wheel 17 drives the gear 19 to rotate via the transmission shaft 18 and the one-way bearing 20 (depending on the rolling direction, only one side of the one-way bearing 20 is locked). The gear 19 drives the rack 21 to move linearly along the groove 22, and the rack 21 pushes the piston 24 into the medicine storage cylinder 3 via the connecting rod 23, squeezing out the ointment. The ointment enters the hose 5 through the medicine guide tube 4 and the opened mechanical sliding valve 10, and drips evenly onto the surface of the application roller 2 through the through hole of the hose 5. As the application roller 2 continues to roll, the ointment is evenly applied to the affected skin.

[0045] Because the one-way bearings 20 in the two transmission components are installed in opposite directions, regardless of whether the application roller 2 rolls clockwise or counterclockwise, one component is always continuously extruding ointment, achieving bidirectional continuous drug delivery. After application, the application roller 2 is lifted off the skin, the spring 9 pushes the arc-shaped cover plate 8 to reset, the valve stem 11 closes the mechanical sliding valve 10 downwards, and the hose 5 descends to contact the surface of the application roller 2, stopping drug dispensing. The user can remove the medicine storage cylinder 3 for cleaning or replacement.

[0046] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An auxiliary drug application device for the treatment of rheumatic immune diseases, characterized in that, The device includes a substrate, to which a drug-applying roller and a drug storage cylinder are connected. The drug-applying roller is located below the drug storage cylinder and is rotatably connected to the substrate. A drug guide tube is connected to the outlet of the drug storage cylinder, with its outlet end located above the drug-applying roller. The drug guide tube is connected to a mechanical sliding valve that controls its conduction state. The drug-applying roller and the substrate are connected via a linkage assembly, which includes an arc-shaped cover plate and a spring. The substrate has an adjustment hole. One end of the spring is connected to the upper inner wall of the adjustment hole, and the free end of the spring is connected to the arc-shaped cover plate. The connecting shaft of the drug-applying roller is slidably located inside the adjustment hole. The end of the arc-shaped cover plate away from the spring rolls against the connecting shaft of the drug-applying roller. The valve stem of the mechanical sliding valve is connected to the arc-shaped cover plate. When the arc-shaped cover plate moves upward, the valve stem moves upward to open the mechanical sliding valve; when the arc-shaped cover plate moves downward, the valve stem moves downward to close the mechanical sliding valve.

2. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 1, characterized in that, A transmission assembly is provided between the connecting shaft of the medicine storage cylinder and the medicine coating roller. A piston is slidably and sealed to the inner side of the medicine storage cylinder. The transmission assembly converts the rolling motion of the medicine coating roller into the linear motion of the piston inside the medicine storage cylinder.

3. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 2, characterized in that, The transmission assembly includes a worm, a worm wheel, a gear, a rack, and a connecting rod. The worm, worm wheel, and gear are all rotatably connected to the base body. The rack and connecting rod are slidably connected to the base body. The worm wheel meshes with the worm, and the rack meshes with the gear. The connecting rod is connected to the end of the piston away from the drug storage cylinder. The worm is connected to the connecting shaft of the drug coating roller, and the worm wheel is coaxially connected to the gear.

4. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 3, characterized in that, The connecting shaft of the coating roller is fixedly connected to a drive pulley, and the worm gear is coaxially fixedly connected to a driven pulley. The driven pulley and the drive pulley are connected by a transmission belt. The base is also connected to a protective shell located outside the driven pulley, the drive pulley, and the transmission belt.

5. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 4, characterized in that, There are two medicine storage cylinders and two transmission components, and the two medicine storage cylinders and two transmission components are arranged symmetrically in mirror image with the vertical center plane of the medicine coating roller as the reference plane; the outlets of the two medicine storage cylinders are connected to the medicine guide pipe through a three-way pipe.

6. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 5, characterized in that, The worm gear is rotatably mounted on the inner side of the base via a transmission shaft. The gear is connected to the transmission shaft via a one-way bearing, and the one-way bearings of the two transmission components are installed in opposite directions. When the coating roller rotates clockwise, the left gear rotates with the rotation of the transmission shaft, pushing the piston towards the side closer to the storage cylinder under the action of the left rack and connecting rod, squeezing out the medicine stored inside the left storage cylinder. At this time, the right gear does not rotate with the rotation of the transmission shaft, and thus the right piston remains stationary relative to the storage cylinder. When the coating roller rotates counterclockwise, the right gear rotates with the rotation of the transmission shaft, pushing the piston towards the side closer to the storage cylinder under the action of the right rack and connecting rod, squeezing out the medicine stored inside the right storage cylinder. At this time, the left gear does not rotate with the rotation of the transmission shaft, and thus the left piston remains stationary relative to the storage cylinder.

7. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 6, characterized in that, The inner side of the base is fixedly connected to a slot, and the rack is provided with a protrusion that cooperates with the slot. The protrusion is slidably disposed on the inner side of the slot.

8. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 6, characterized in that, The valve stem slides through the arc-shaped cover plate, and the drug outlet end of the drug guide tube is connected to a flexible tube with several through holes. The outer wall of the flexible tube is connected to the arc-shaped cover plate, and the flexible tube is located directly above the drug application roller.

9. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 1, characterized in that, The width of the adjusting hole is the same as the diameter of the connecting shaft of the medicine-applying roller, and the inner diameter of the arc surface of the arc-shaped cover plate is the same as the diameter of the connecting shaft of the medicine-applying roller.

10. The auxiliary drug application device for the treatment of rheumatic immune diseases according to claim 1, characterized in that, A handle is connected to the upper side of the base, the medicine storage cylinder is located inside the base, and the base is connected to a cover for opening and / or closing its upper opening; a placement trough is connected to the inner side of the base, and the medicine storage cylinder is detachably connected to the inner side of the placement trough.

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