Anorectal hand-held administration device and administration method thereof

Abstract

The application belongs to the technical field of medical apparatus and instruments, and provides an anorectal department hand-held dosing device and a dosing method thereof. The dosing device comprises a branch pipe, symmetrical mounting shafts are rotatably mounted on both sides of the branch pipe, support plates are fixedly mounted on the mounting shafts, elastic wires are fixedly connected to the support plates, the ends of the elastic wires away from the support plates are fixedly connected to the branch pipe, and gaps are arranged at the ends of the two sets of support plates when the elastic wires are in the original length. Compared with the prior art, the application has the following beneficial effects: the two sets of V-shaped support plates enter the buttock gap of the patient, then the support plates are rotated to open the two buttocks of the patient, the anus is exposed, the anus of the patient is quickly exposed, the medical staff avoids contacting the skin of the patient, the workload of the medical staff is reduced, multiple fixations are avoided, and the patient is prevented from being hurt.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a handheld drug delivery device for anorectal diseases and its drug delivery method. Background Technology

[0002] The Department of Proctology specializes in the research and treatment of constipation, anal fissures, anal fistulas, eczema, mixed hemorrhoids, internal hemorrhoids, and external hemorrhoids.

[0003] In proctology treatments, medications are often administered into the patient's anus using a dispensing device. Current techniques require personnel to continuously open the patient's buttocks. However, opening the buttocks with one hand results in a small exposed area around the anus, making accurate medication administration difficult. Using two hands requires multiple people to operate simultaneously, increasing the complexity of the process. A Chinese patent (CN222324099U) addresses these issues by requiring the doctor to first open the patient's buttocks with one hand, bringing the dispensing tube close to the anus. Afterward, the doctor removes their hand and reopens the buttocks using an L-shaped plate. During this process, the dispensing tube initially makes close contact with the patient's buttocks, and subsequent opening with the L-shaped plate causes the tube to wobble and repeatedly make unnecessary contact with the anus, causing pain. These multiple steps increase the workload for medical staff and are not user-friendly. Summary of the Invention

[0004] The purpose of this invention is to provide a handheld drug delivery device for anorectal diseases and its drug delivery method, aiming to solve the technical problem that the existing technology involves multiple steps to fix the device, which can easily cause harm to the patient.

[0005] The present invention is implemented as follows: a handheld drug delivery device for anorectal diseases includes a branch tube, on both sides of which are symmetrically distributed mounting shafts. Support plates are fixedly mounted on the mounting shafts, and elastic wires are fixedly connected to the support plates. The end of the elastic wire away from the support plate is fixedly connected to the branch tube. When the elastic wire is of its original length, a gap is provided between the ends of the two sets of support plates. A winding wire is provided on the branch tube to drive the two sets of support plates to rotate synchronously in opposite directions.

[0006] A support rod is slidably installed inside the branch pipe. A movable frame is fixedly installed at one end of the support rod located inside the two sets of support plates. A connecting cylinder is provided on the movable frame. A drug administration tube is threadedly connected to the connecting cylinder. A placement cylinder is fixedly installed on the movable frame. The placement cylinder is connected to a drug inlet tube. The placement cylinder is connected to the drug administration tube and a first piston plate is slidably installed inside the placement cylinder. A first push rod extending into the placement cylinder is fixedly installed on the first piston plate.

[0007] A further technical solution: A support pad connected end to end is rotatably mounted on the support plate, and the support pad moves around the surface of the support plate.

[0008] A further technical solution: A bracket is fixedly installed on the branch pipe, and a take-up shaft is rotatably installed on the bracket. The take-up shaft is parallel to the branch pipe and the take-up line is wound on the take-up shaft. The end of the take-up line away from the take-up shaft is fixedly connected to the end of the support plate. A worm is rotatably installed on the bracket, and the worm meshes with a worm wheel fixedly installed at the end of the take-up shaft.

[0009] A further technical solution: A threaded rod is rotatably mounted on the movable frame, and the threaded rod is threadedly connected to the lifting block that is slidably mounted on the movable frame. A connecting cylinder is fixedly mounted on the lifting block, and the end of the connecting cylinder away from the lifting block is a closed structure.

[0010] A further technical solution: The placement tube is connected to a second connecting tube, and the second connecting tube is connected to a first connecting tube fixedly installed on the drug delivery tube by a plug-in connection.

[0011] A further technical solution: A second piston plate is slidably installed inside the placement cylinder. The second piston plate is located on the side of the first piston plate away from the moving frame. The second piston plate is slidably connected to the first push rod. A second push rod extending out of the placement cylinder is fixedly installed on the second piston plate. A one-way valve is connected to the end of the placement cylinder away from the moving frame. A through hole is opened on the first piston plate. A leather cover plate is fixedly installed on the first piston plate. In its natural state, the cover plate covers the through hole.

[0012] A further technical solution: The lifting block has a cavity communicating with the connecting cylinder. A telescopic rod is fixedly installed in the cavity. The telescopic rod passes through the side wall of the connecting cylinder and a push plate is fixedly installed at the end of the telescopic rod. The push plate slides in contact with the inner wall of the administration tube. A sealing membrane distributed around the telescopic rod is fixedly installed on the end face of the connecting cylinder. The end of the sealing membrane away from the connecting cylinder is fixedly connected to the push plate. The cavity communicates with the placement cylinder.

[0013] A further technical solution: A third connecting pipe is connected to the second connecting pipe, and the end of the third connecting pipe away from the second connecting pipe is connected to the cavity. Both the second and third connecting pipes are equipped with manual valves.

[0014] The present invention also provides a method for drug administration, which is applied to the above-described handheld drug administration device for anorectal diseases, comprising the following steps:

[0015] Step S1: Medical staff first deliver the medicine through the inlet tube into the placement container and then seal the inlet tube with a cap;

[0016] Step S2: The medical staff holds the branch tube so that the tip of the V-shaped structure formed by the support plate is facing the patient's buttocks, pushes the branch tube closer to the patient's buttocks so that the two sets of support plates contact the patient's two buttocks, and continues to push the branch tube to move so that the support plate is squeezed into the gap between the patient's two buttocks.

[0017] Step S3: After the support plate is inserted into the set position, rotate the worm gear. The worm gear drives the winding shaft to rotate through the meshing worm wheel. The winding shaft winds up the winding line, thereby pulling the support plate to rotate. The rotation of the support plate opens the patient's two buttocks, exposing the anus.

[0018] Step S4: The support rod pushes the moving frame to allow the medication tube to enter the patient's anus. The medical staff keeps holding the support tube with one hand and pushes the first push rod with the other hand, causing the first piston plate to move inside the placement cylinder and push the drug through the first connecting tube and the second connecting tube into the medication tube. Then the drug enters the patient's body through the hole at the end of the medication tube. After the medication is administered, the support rod drives the medication tube out of the patient's body, and then the support plate is returned to its original position and pulled outward.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. Two sets of V-shaped support plates are inserted into the patient's buttocks. The support plates then rotate to open the patient's buttocks, exposing the anus. As the support plates move, the support pads contact the patient's buttocks and rotate with the patient's skin, allowing for smooth movement of the support plates. This avoids friction between the support plates and the patient's skin or movement of the patient's muscles and skin, improving the smoothness and practicality of the device. It achieves rapid exposure of the patient's anus, avoids contact between medical personnel and the patient's skin, reduces the workload of medical personnel, avoids multiple fixations, and prevents harm to the patient.

[0021] 2. After the first piston plate moves to the end of its stroke, it pushes the second piston plate to move in the direction of the first piston plate. Under the push of the second piston plate, the air will push the baffle plate to rotate, and then the air can enter the second connecting tube and push the residual drug in the second connecting tube to continue to move into the drug delivery tube. The second piston plate can be driven to move multiple times to move the drug in the second connecting tube, reduce the drug residue in the second connecting tube, ensure that enough drug enters the patient's body, and improve the drug delivery effect of the device.

[0022] 3. Subsequently, close the valve on the second connecting pipe and open the valve on the third connecting pipe. At this time, move the second piston plate back and forth again. Air is then delivered into the cavity through the third connecting pipe. The air pushes the push plate away from the connecting cylinder, thereby pushing the residual drug in the administration tube into the patient's body through the push plate. This further reduces drug residue in the administration tube, ensures sufficient drug enters the patient's body, and improves the drug delivery effect of the device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0025] Figure 3 This is a schematic diagram of the branch pipe in this invention.

[0026] Figure 4 This is a schematic diagram of the support plate in this invention.

[0027] Figure 5 for Figure 2 A magnified view of region A1 in the middle.

[0028] Figure 6 for Figure 2 A magnified view of region A2 in the middle.

[0029] In the attached diagram: 1. Branch pipe; 2. Mounting shaft; 3. Support plate; 4. Support pad; 5. Elastic line; 6. Bracket; 7. Rewinding shaft; 8. Worm gear; 9. Worm; 10. Moving frame; 11. Support rod; 12. Lifting block; 13. Threaded rod; 14. Cavity; 15. Telescopic rod; 16. Push plate; 17. Connecting cylinder; 18. Sealing membrane; 19. Drug delivery tube; 20. First connecting pipe; 21. Placement cylinder; 22. Drug inlet tube; 23. Second connecting pipe; 24. Third connecting pipe; 25. First push rod; 26. First piston plate; 27. Through hole; 28. Baffle plate; 29. ​​Second push rod; 30. Second piston plate; 31. One-way valve; 32. Rewinding line. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0032] like Figures 1-6As shown, this invention provides a handheld drug delivery device for anorectal diseases, comprising a branch tube 1, symmetrically distributed mounting shafts 2 rotatably mounted on both sides of the branch tube 1, a support plate 3 fixedly mounted on the mounting shaft 2, a support pad 4 connected end to end rotatably mounted on the support plate 3, the support pad 4 moving around the surface of the support plate 3, an elastic line 5 fixedly connected to the support plate 3, the end of the elastic line 5 away from the support plate 3 fixedly connected to the branch tube 1, the elastic line 5 having a gap between the ends of the two sets of support plates 3 when it is of its original length, a take-up line 32 mounted on the branch tube 1 to drive the two sets of support plates 3 to rotate synchronously in opposite directions, a bracket 6 fixedly mounted on the branch tube 1, a take-up shaft 7 rotatably mounted on the bracket 6, the take-up shaft 7 being parallel to the branch tube 1 and the take-up line 32 being wound around the take-up shaft 7, the end of the take-up line 32 away from the take-up shaft 7 fixedly connected to the end of the support plate 3, a worm gear 9 rotatably mounted on the bracket 6, the worm gear 9 meshing with a worm wheel 8 fixedly mounted at the end of the take-up shaft 7;

[0033] A support rod 11 is slidably installed inside the branch pipe 1. A movable frame 10 is fixedly installed at one end of the support rod 11 located inside the two sets of support plates 3. A connecting cylinder 17 is provided on the movable frame 10. A threaded rod 13 is rotatably installed on the movable frame 10. The threaded rod 13 is threadedly connected to the lifting block 12 slidably installed on the movable frame 10. The connecting cylinder 17 is fixedly installed on the lifting block 12. The end of the connecting cylinder 17 away from the lifting block 12 is a closed structure. A drug administration tube 19 is threadedly connected to the connecting cylinder 17. A placement cylinder 21 is fixedly installed on the movable frame 10. The placement cylinder 21 is connected to the drug inlet pipe 22. The placement cylinder 21 is connected to the drug administration tube 19 and a first piston plate 26 is slidably installed inside the placement cylinder 21. A first push rod 25 extending into the placement cylinder 21 is fixedly installed on the first piston plate 26. The placement cylinder 21 is connected to a second connecting pipe 23. The second connecting pipe 23 is connected to the first connecting pipe 20 fixedly installed on the drug administration tube 19 by insertion.

[0034] In practical application, medical personnel first deliver the medication through the inlet tube 22 into the placement cylinder 21 and seal the inlet tube 22 with a cap. The medical personnel hold the branch tube 1, positioning the V-shaped tip of the support plate 3 towards the patient's buttocks, and push the branch tube 1 closer to the patient's buttocks so that the two sets of support plates 3 contact the patient's buttocks. At this time, the support pad 4 contacts the patient's buttocks. Continuing to push the branch tube 1, the support plate 3 is squeezed into the gap between the patient's buttocks. As the support plate 3 moves, the support pad 4 contacts and rotates with the patient's skin, allowing the support plate 3 to move smoothly. This avoids friction between the support plate 3 and the patient's skin or movement of the patient's muscles and skin, improving the smoothness and practicality of the equipment. After the support plate 3 extends to the set position, the worm gear 9 is rotated. The worm gear 9 drives the winding shaft 7 to rotate through the meshing worm wheel 8. The winding shaft 7 winds the winding line 32, thereby pulling the support plate 3 to rotate. The rotation of the support plate 3 affects the patient's buttocks. The two buttocks are spread apart to expose the anus. Based on the position of the support plate 3 and the position of the anus, the threaded rod 13 drives the lifting block 12 to move so that the height of the drug delivery tube 19 is aligned with the anus. This allows for convenient and quick adjustment of the device's position, improving drug delivery efficiency. Then, the support rod 11 pushes the moving frame 10 to move, allowing the drug delivery tube 19 to enter the patient's anus. The support rod 11 is then fixed with a fixing screw. The medical staff keeps one hand holding the support tube 1, and then uses the other hand to push the first push rod 25 to move, causing the first piston plate 26 to move within the placement cylinder 21 and push the drug through the first connecting tube 20 and the second connecting tube 23 into the drug delivery tube 19. The drug then enters the patient's body through the hole at the end of the drug delivery tube 19. After drug delivery, the support rod 11 drives the drug delivery tube 19 out of the patient's body, and then the support plate 3 is returned to its original position and pulled out. The drug delivery tube 19 can be disassembled and replaced with a new one for reuse, reducing the consumption of consumables.

[0035] like Figure 2 , Figure 6 As shown, this invention provides a handheld drug delivery device for anorectal diseases. A second piston plate 30 is slidably installed inside the placement cylinder 21. The second piston plate 30 is located on the side of the first piston plate 26 away from the moving frame 10. The second piston plate 30 is slidably connected to the first push rod 25. A second push rod 29 extending out of the placement cylinder 21 is fixedly installed on the second piston plate 30. A one-way valve 31 is connected to the end of the placement cylinder 21 away from the moving frame 10. A through hole 27 is opened on the first piston plate 26. A leather cover plate 28 is fixedly installed on the first piston plate 26. In its natural state, the cover plate 28 covers the through hole 27.

[0036] In practical application, after the first piston plate 26 moves to the end of its stroke, there is a gap between it and the surface of the moving frame 10. At the same time, when the first piston plate 26 moves, the volume of the area between it and the second piston plate 30 increases and the air pressure decreases. Under the action of atmospheric pressure, outside air enters the placement cylinder 21 through the one-way valve 31. When the first piston plate 26 moves to the end of its stroke, the second push rod 29 pushes the second piston plate 30 to move in the direction of the first piston plate 26. At this time, the volume between the first piston plate 26 and the second piston plate 30 decreases and the air pressure increases. The air will push the baffle 28 to rotate, and then the air can enter the second connecting tube 23 and push the residual drug in the second connecting tube 23 to continue to move into the drug delivery tube 19. This can drive the second piston plate 30 to move multiple times, pushing the drug in the second connecting tube 23 to move, reducing the drug residue in the second connecting tube 23, ensuring that enough drug enters the patient's body, and improving the drug delivery effect of the device.

[0037] like Figure 2 , Figure 5 As shown, this invention provides a handheld drug delivery device for anorectal diseases. The lifting block 12 has a cavity 14 that communicates with the connecting cylinder 17. A telescopic rod 15 is fixedly installed in the cavity 14. The telescopic rod 15 passes through the side wall of the connecting cylinder 17, and a push plate 16 is fixedly installed at the end of the telescopic rod 15. The push plate 16 slides in contact with the inner wall of the drug delivery tube 19. A sealing membrane 18 distributed around the telescopic rod 15 is fixedly installed on the end face of the connecting cylinder 17. The end of the sealing membrane 18 away from the connecting cylinder 17 is fixedly connected to the push plate 16. The cavity 14 communicates with the placement cylinder 21.

[0038] Specifically, a third connecting pipe 24 is connected to the second connecting pipe 23. The end of the third connecting pipe 24 away from the second connecting pipe 23 is connected to the cavity 14. Both the second connecting pipe 23 and the third connecting pipe 24 are equipped with manual valves.

[0039] In practical application, after medical personnel observe that there is no drug residue in the second connecting tube 23, they close the valve on the second connecting tube 23 and open the valve on the third connecting tube 24. At this time, the second piston plate 30 is moved back and forth again, and air is delivered into the cavity 14 through the third connecting tube 24. Due to the sealing membrane 18, the cavity 14, the connecting cylinder 17 and the push plate 16 form a closed space. After the gas volume in this space increases, it will push the push plate 16 to move away from the connecting cylinder 17, thereby pushing the drug residue in the administration tube 19 into the patient's body through the push plate 16, further reducing the drug residue in the administration tube 19, ensuring that enough drug enters the patient's body, and improving the effect of the device's drug delivery. After the administration tube 19 is removed, the gas in the cavity 14 can be discharged through the second connecting tube 23.

[0040] like Figures 1-6As shown, the present invention provides a drug delivery method, which is applied to the above-mentioned handheld drug delivery device for anorectal diseases, and includes the following steps:

[0041] Step S1: Medical staff first deliver the medicine through the inlet tube 22 into the placement tube 21 and then seal the inlet tube 22 with a cap;

[0042] Step S2: The medical staff holds the branch tube 1 so that the tip of the V-shaped structure formed by the support plate 3 is facing the patient's buttocks, pushes the branch tube 1 closer to the patient's buttocks so that the two sets of support plates 3 contact the patient's two buttocks, and continues to push the branch tube 1 to move so that the support plate 3 is squeezed into the gap between the patient's two buttocks.

[0043] Step S3: After the support plate 3 is inserted into the set position, the worm 9 is rotated. The worm 9 drives the winding shaft 7 to rotate through the meshing worm wheel 8. The winding shaft 7 winds up the winding line 32, thereby pulling the support plate 3 to rotate. The rotation of the support plate 3 opens the patient's two buttocks, exposing the anus.

[0044] Step S4: The support rod 11 pushes the moving frame 10 to move so that the administration tube 19 enters the patient's anus. The medical staff keeps holding the support tube 1 with one hand and pushes the first push rod 25 with the other hand, so that the first piston plate 26 moves in the placement cylinder 21 and pushes the drug through the first connecting tube 20 and the second connecting tube 23 into the administration tube 19. Then the drug enters the patient's body through the hole at the end of the administration tube 19. After the administration is completed, the support rod 11 drives the administration tube 19 out of the patient's body, and then the support plate 3 is restored to its original position and pulled out.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A handheld drug delivery device for anorectal diseases, comprising a branch tube (1), characterized in that, The branch pipe (1) is rotatably mounted with symmetrically distributed mounting shafts (2), and a support plate (3) is fixedly mounted on the mounting shaft (2). An elastic line (5) is fixedly connected to the support plate (3). The end of the elastic line (5) away from the support plate (3) is fixedly connected to the branch pipe (1). When the elastic line (5) is of its original length, there is a gap between the ends of the two sets of support plates (3). The branch pipe (1) is provided with a winding line (32) that drives the two sets of support plates (3) to rotate synchronously in opposite directions. A support rod (11) is slidably installed inside the branch pipe (1). A movable frame (10) is fixedly installed at one end of the support rod (11) located inside the two sets of support plates (3). A connecting cylinder (17) is provided on the movable frame (10). A drug administration tube (19) is threadedly connected to the connecting cylinder (17). A placement cylinder (21) is fixedly installed on the movable frame (10). A drug inlet tube (22) is connected to the placement cylinder (21). The placement cylinder (21) is connected to the drug administration tube (19). A first piston plate (26) is slidably installed inside the placement cylinder (21). A first push rod (25) extending into the placement cylinder (21) is fixedly installed on the first piston plate (26). A bracket (6) is fixedly installed on the branch pipe (1), and a take-up shaft (7) is rotatably installed on the bracket (6). The take-up shaft (7) is parallel to the branch pipe (1) and the take-up line (32) is wound on the take-up shaft (7). The end of the take-up line (32) away from the take-up shaft (7) is fixedly connected to the end of the support plate (3). A worm (9) is rotatably installed on the bracket (6), and the worm (9) meshes with a worm wheel (8) fixedly installed at the end of the take-up shaft (7).

2. The handheld drug delivery device for anorectal diseases according to claim 1, characterized in that, A support pad (4) is rotatably mounted on the support plate (3), and the support pad (4) moves around the surface of the support plate (3).

3. The handheld drug delivery device for anorectal diseases according to claim 1, characterized in that, A threaded rod (13) is rotatably mounted on the movable frame (10). The threaded rod (13) is threadedly connected to the lifting block (12) which is slidably mounted on the movable frame (10). A connecting cylinder (17) is fixedly mounted on the lifting block (12). The end of the connecting cylinder (17) away from the lifting block (12) is a closed structure.

4. The handheld drug delivery device for anorectal diseases according to claim 3, characterized in that, The placement tube (21) is connected to a second connecting tube (23), and the second connecting tube (23) is connected to the first connecting tube (20) fixedly installed on the drug delivery tube (19) by a plug-in connection.

5. A handheld drug delivery device for anorectal diseases according to claim 1, characterized in that, A second piston plate (30) is slidably installed inside the placement cylinder (21). The second piston plate (30) is located on the side of the first piston plate (26) away from the moving frame (10). The second piston plate (30) is slidably connected to the first push rod (25). A second push rod (29) extending out of the placement cylinder (21) is fixedly installed on the second piston plate (30). A one-way valve (31) is connected to the end of the placement cylinder (21) away from the moving frame (10). A through hole (27) is opened on the first piston plate (26). A leather cover plate (28) is fixedly installed on the first piston plate (26). In its natural state, the cover plate (28) covers the through hole (27).

6. A handheld drug delivery device for anorectal diseases according to claim 4, characterized in that, The lifting block (12) has a cavity (14) that communicates with the connecting cylinder (17). A telescopic rod (15) is fixedly installed in the cavity (14). The telescopic rod (15) passes through the side wall of the connecting cylinder (17) and a push plate (16) is fixedly installed at the end of the telescopic rod (15). The push plate (16) slides in contact with the inner wall of the drug delivery tube (19). A sealing membrane (18) distributed around the telescopic rod (15) is fixedly installed on the end face of the connecting cylinder (17). The end of the sealing membrane (18) away from the connecting cylinder (17) is fixedly connected to the push plate (16). The cavity (14) communicates with the placement cylinder (21).

7. A handheld drug delivery device for anorectal diseases according to claim 6, characterized in that, The second connecting pipe (23) is connected to the third connecting pipe (24), and the end of the third connecting pipe (24) away from the second connecting pipe (23) is connected to the cavity (14). Both the second connecting pipe (23) and the third connecting pipe (24) are equipped with manual valves.

Images