A medicine applying device with backflow prevention structure

Abstract

This invention relates to the field of medical device technology, and more particularly to a medication application device with an anti-backflow structure. It includes a housing, on which a head cap, a tail cap, and a liquid storage bottle are detachably mounted. A partition plate is fixedly connected inside the liquid storage bottle. A connecting shell is fixedly connected inside the housing, and the connecting shell connects to a first pipe, a second pipe, a third pipe, and a fourth pipe. The third pipe connects to a medication dispensing head. A mounting component is fixedly connected to the housing, and the mounting component is rotatably connected to two rotating shafts. A medication application roller is detachably mounted on each rotating shaft. An elastic airbag is fixedly connected inside the housing. This invention prevents medication backflow by separating the liquid storage bottle to store medication and cleaning solution separately, and then pressurizing the liquid storage bottle through the elastic airbag to expel the medication to the medication application roller. The medication is then evenly applied to the affected area by the medication application roller. After use, the tubing is cleaned with cleaning solution to prevent the medication from drying out in the air and clogging the tubing.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a drug application device with an anti-backflow structure. Background Technology

[0002] There are many types of medication application devices, all with the core goal of achieving precise, hygienic, and even medication application. They are especially advantageous over finger application when dealing with difficult-to-apply areas, mixed medications, or large wounds. Medication application devices include roller applicators and sponge applicators. Roller applicators are mainly used for applying ointments or creams to the affected area, while sponge applicators are mainly used for applying solutions to the affected area. In addition, there are other types of application trays to accommodate other types of medications or affected areas.

[0003] In the aforementioned existing devices, the medicine needs to be squeezed through the tubing onto the applicator, and then evenly applied to the affected area using the applicator. After use, the medicine remains in the tubing. Due to prolonged contact with the outside environment, the moisture in the medicine gradually evaporates, causing it to harden and dry out, thus clogging the tubing and affecting the extrusion of medicine in subsequent uses. Furthermore, the prolonged contact with the outside environment can also contaminate the medicine in the tubing. When the contaminated medicine is applied to the affected area again during the next use, it affects the therapeutic effect of the medicine on the affected area. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a drug application device with an anti-backflow structure.

[0005] The technical implementation of the present invention is as follows: a medicine application device with an anti-backflow structure includes a housing, on which a head cap, a tail cap, and a liquid storage bottle are detachably mounted. A partition plate is fixedly connected inside the liquid storage bottle. A connecting shell is fixedly connected inside the housing, and the connecting shell connects to a first pipe, a second pipe, a third pipe, and a fourth pipe. The first pipe and the second pipe pass through the housing and are respectively connected to the liquid storage bottle on both sides of the partition plate. The third pipe is connected to the fourth pipe and has a medicine dispensing head. A mounting component is fixedly connected to the housing, and the mounting component is rotatably connected to two rotating shafts. A medicine application roller is detachably mounted on each rotating shaft. An elastic airbag is fixedly connected inside the housing, and a pressure handle for pressing the elastic airbag is slidably connected to the housing. The elastic airbag is connected to a pressure pipe that passes through the housing and connects to the liquid storage bottle.

[0006] More preferably, both the liquid storage bottle and the partition plate are provided with a sealing element between themselves and the outer shell.

[0007] More preferably, the connecting shell is slidably connected to an adjusting member, the adjusting member having a hole for controlling the connection between the first pipe and the third pipe, and between the second pipe and the fourth pipe. The adjusting member is fixedly connected to a transmission member slidably connected to the connecting shell. A steering ring is fixedly connected inside the outer shell. A first spring is provided between the steering ring and the transmission member. The outer shell is slidably connected to an operating handle. A pull rope passing through the steering ring is provided between the operating handle and the transmission member.

[0008] More preferably, the adjusting member is slidably connected with a sliding plate and a sliding rod, the sliding plate is used to block the hole of the adjusting member, the sliding plate is fixedly connected to the sliding rod, and the sliding rod is pressed against the communicating shell.

[0009] More preferably, the adjusting member is slidably connected to a first limiting post, a second spring is provided between the first limiting post and the adjusting member, and the communicating shell is provided with two limiting grooves, the first limiting post being inserted into the adjacent limiting groove to position the adjusting member.

[0010] More preferably, the distance between the midpoints of the two limiting grooves on the connecting shell is equal to the distance between the midpoints of the first pipe and the second pipe at the connection point with the connecting shell.

[0011] More preferably, the outer casing is hinged with two pressure relief switches, a third spring is provided between the pressure relief switches and the outer casing, the outer casing is fixedly connected with a first pressure relief pipe and a second pressure relief pipe, the first pressure relief pipe and the second pressure relief pipe are respectively connected to the liquid storage bottle on both sides of the partition plate, and the two pressure relief switches are respectively used to block the first pressure relief pipe and the second pressure relief pipe.

[0012] More preferably, the mounting component is rotatably connected to a threaded rod, the mounting component is fixedly connected to a fixing rod, the fixing rod is slidably connected to a movable component that is threadedly connected to the threaded rod, and the movable component is fixedly connected to the dispensing head.

[0013] More preferably, a motor is fixedly connected inside the housing, and the output shaft of the motor is connected to the rotating shaft and the threaded rod via a pulley and belt drive.

[0014] More preferably, the rotating shaft is slidably connected to a second limiting post, and a fourth spring is provided between the second limiting post and the rotating shaft. The second limiting post is used to lock the adjacent coating roller.

[0015] The beneficial effects of the above solution are as follows: The present invention separates the storage bottle and stores the medicine and cleaning solution separately. Then, the elastic air bag pressurizes the storage bottle and squeezes the medicine out to the application roller, thereby preventing the medicine from flowing back. The medicine is then evenly applied to the affected area by the application roller. After use, the pipeline is cleaned with cleaning solution to prevent the medicine from drying in the air and clogging the pipeline.

[0016] Two pressure relief switches control the sealing status of the first and second pressure relief pipes respectively. Pressure is released after the corresponding stored material in the storage bottle is used up, thereby preventing excessive leakage of the stored material.

[0017] The moving part is moved by rotating the threaded rod, which in turn moves the medicine dispensing head. The medicine is squeezed onto the medicine dispensing roller along the axis of the dispensing roller. At the same time, the two dispensing rollers are rotated, and the medicine is evenly applied to the surface of the two dispensing rollers through the gap between them. This allows for more even application of the medicine to the affected area and reduces the time required to spread the medicine evenly on the affected area. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural cross-sectional view of the head cover and tail cover of the present invention; Figure 3 This is a three-dimensional structural diagram of the liquid storage bottle and the separator plate of the present invention; Figure 4 This is a three-dimensional structural diagram of the adjusting component and the transmission component of the present invention; Figure 5 This is a three-dimensional structural diagram of the sliding plate and sliding rod of the present invention; Figure 6 for Figure 2 Enlarged view of point A in the middle; Figure 7 This is a three-dimensional structural diagram of the fixing rod and the moving part of the present invention.

[0019] In the diagram: 1. Outer shell, 2. Head cover, 3. Tail cover, 4. Liquid storage bottle, 401. Elastic airbag, 402. Pressurizing handle, 403. Pressurizing pipe, 5. Divider plate, 6. Connecting shell, 7. First pipe, 8. Second pipe, 9. Third pipe, 10. Fourth pipe, 11. Dispensing head, 12. Mounting component, 13. Rotating shaft, 14. Dispensing roller, 15. Adjusting component, 16. Transmission component, 17. Steering ring, 18. First spring, 19. Operating handle, 20. Pull rope, 21. Sliding plate, 22. Sliding rod, 23. First limiting post, 24. Second spring, 25. Pressure relief switch, 2501. Third spring, 2502. First pressure relief pipe, 2503. Second pressure relief pipe, 26. Threaded rod, 27. Fixed rod, 28. Moving component, 29. Motor, 30. Second limiting post, 31. Fourth spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1

[0022] A drug application device with an anti-backflow structure, please refer to Figures 1-5 and Figure 7The system includes an outer shell 1, with a detachable head cap 2 and a tail cap 3 on the left and right sides of the outer shell 1, respectively. The head cap 2 and tail cap 3 are magnetically attached to the outer shell 1. A partition plate 5 is fixed inside the liquid storage bottle 4, dividing the liquid storage bottle 4 into front and rear spaces. The rear space is used to store ointment-like medicine, and the front space is used to store cleaning solution. A connecting shell 6 is fixed inside the outer shell 1, and the connecting shell 6 has four holes. Two holes at the same horizontal level correspond to each other. The four holes of the connecting shell 6 are respectively connected to a first pipe 7, a second pipe 8, a third pipe 9, and a fourth pipe 10. The first pipe 7 and the third pipe 9 correspond to each other, and the second pipe 8 and the fourth pipe 10 correspond to each other. The first pipe 7 and the second pipe 8 pass through the outer shell 1 and are connected to the front and rear sides of the liquid storage bottle 4 via the partition plate 5, respectively. The third pipe 9 is connected to the fourth pipe 10 and has a medicine dispensing head 11. A mounting component 12 is fixedly connected to the left side of the casing 1. The mounting component 12 is located inside the head cover 2. The mounting component 12 is rotatably connected to two rotating shafts 13. A medicine application roller 14 is detachably installed on the rotating shafts 13. An elastic airbag 401 is fixedly connected inside the outer casing 1. The elastic airbag 401 is provided with an air inlet and an air outlet. A pressure handle 402 for pressing the elastic airbag 401 is slidably connected to the outer casing 1. The air outlet of the elastic airbag 401 is connected to a pressure pipe 403 that passes through the outer casing 1 and connects to the liquid storage bottle 4. The air inlet of the elastic airbag 401 is provided with a one-way valve. Through this one-way valve, gas can only enter the elastic airbag 401 from the outside through the one-way valve. The pressure pipe 403 is a three-way pipe. The two pipe ports on the upper side of the pressure pipe 403 are respectively connected to the spaces on the front and rear sides of the liquid storage bottle 4, and both connections are provided with one-way valves. Through this one-way valve, gas can only enter the liquid storage bottle 4 from the pressure pipe 403. Both the liquid storage bottle 4 and the partition plate 5 are provided with a sealing element (which is prior art and not shown in the figure) between them and the outer shell 1, thereby improving the sealing performance between the liquid storage bottle 4 and the partition plate 5 and the outer shell 1 and preventing the liquid in the liquid storage bottle 4 from escaping.

[0023] Please refer to Figure 2 and Figure 4 An adjusting member 15 is slidably connected to the connecting shell 6. The adjusting member 15 has a hole for controlling the connection and blockage between two corresponding holes on the connecting shell 6. The adjusting member 15 is fixedly connected to a transmission member 16 that is slidably connected to the connecting shell 6. The transmission member 16 consists of a rectangular rod and a disc. A steering ring 17 is fixedly connected inside the outer shell 1. A first spring 18 is provided between the steering ring 17 and the transmission member 16. An operating handle 19 is slidably connected to the outer shell 1. A pull rope 20 passing through the steering ring 17 is provided between the operating handle 19 and the transmission member 16. The steering ring 17 is used to change the direction of the pull rope 20. The maximum movable distance of the operating handle 19 is greater than the maximum movable distance of the transmission member 16.

[0024] Please refer to Figure 4 and Figure 5The adjusting member 15 is slidably connected with a sliding plate 21 and a sliding rod 22. The sliding plate 21 is used to block the hole of the adjusting member 15. The sliding plate 21 is fixedly connected to the sliding rod 22. The sliding rod 22 is pressed against the connecting shell 6. The length of the sliding rod 22 is greater than the length of the adjusting member 15. Therefore, when the adjusting member 15 moves, the sliding rod 22 will contact the connecting shell 6 first and stop moving, thereby changing the relative position of the sliding rod 22 and the adjusting member 15.

[0025] Please refer to Figure 5 The adjusting component 15 is slidably connected to a first limiting post 23, which consists of a cylinder and a hemisphere. A second spring 24 is provided between the first limiting post 23 and the adjusting component 15. The second spring 24 is initially in a compressed state. The connecting shell 6 has two limiting grooves. The first limiting post 23 is inserted into the adjacent limiting groove to position the adjusting component 15. The depth of the upper limiting groove on the connecting shell 6 is less than the radius of the hemisphere of the first limiting post 23. The distance between the midpoints of the two limiting grooves on the connecting shell 6 is equal to the distance between the midpoints of the first pipe 7 and the second pipe 8 at the connection point with the connecting shell 6. Therefore, when the hole on the adjusting component 15 is aligned with the connection point of the first pipe 7 or the second pipe 8 with the connecting shell 6, the first limiting post 23 is inserted into the corresponding limiting groove on the connecting shell 6.

[0026] Please refer to Figure 2 and Figure 6 The outer casing 1 is hinged with two pressure relief switches 25. A third spring 2501 is provided between the pressure relief switches 25 and the outer casing 1. The outer casing 1 is fixedly connected to a first pressure relief pipe 2502 and a second pressure relief pipe 2503. The first pressure relief pipe 2502 and the second pressure relief pipe 2503 are respectively connected to the front and rear sides of the liquid storage bottle 4 on the partition plate 5. The two pressure relief switches 25 are used to block the first pressure relief pipe 2502 and the second pressure relief pipe 2503 respectively. The third spring 2501 is always in a compressed state, thereby providing sufficient pressure to the pressure relief switches 25 to block the first pressure relief pipe 2502 and the second pressure relief pipe 2503.

[0027] When using this device, first open the tail cap 3, then remove the storage bottle 4, and fill the storage bottle 4 with medicine and cleaning solution. The medicine is located on the rear side of the partition plate 5, and the cleaning solution is located on the front side of the partition plate 5. Then, install the storage bottle 4 and close the tail cap 3, then open the head cap 2. At the same time, repeatedly press the pressure handle 402. The pressure handle 402 pressurizes the elastic airbag 401. The elastic airbag 401 repeatedly compresses and pops up, thereby forcing air into the front and rear sides of the storage bottle 4, increasing the air pressure inside the storage bottle 4. Then, move the operating handle 19 to the right, and the operating handle 19 pulls the pull rope 20. The pull rope 20 pulls the transmission component 16 downward, the transmission component 16 compresses the first spring 18, and the transmission component 16 drives the adjustment component 15 to move. When the hole of the adjustment component 15 is aligned with the connection between the second pipe 8 and the fourth pipe 10, the first limiting post 23 is aligned with the limiting groove on the upper side of the connecting shell 6, and under the action of the second spring 24, the first limiting post 23 is inserted into the limiting groove. At the same time, the medicine in the storage bottle 4 enters the fourth pipe 10 from the second pipe 8 through the adjustment component 15, and then reaches the medicine outlet 11 through the third pipe 9, and is squeezed out from the medicine outlet 11 onto the medicine coating roller 14.

[0028] Once sufficient medication is applied to the coating roller 14, release the operating handle 19. The transmission component 16, under the action of the first spring 18, moves the adjusting component 15 upwards, blocking the second pipe 8 and the fourth pipe 10. Simultaneously, the adjusting component 15 moves the first limiting post 23 upwards. The first limiting post 23 retracts due to the pressure from the upper limit groove of the connecting shell 6, compressing the second spring 24. Then, rotate the entire device 90° clockwise to move the gas in the storage bottle 4 to the second pressure relief pipe 2503. Finally, press the pressure relief switch 2 on the rear side. 5. The pressure relief switch 25 compresses the adjacent third spring 2501 and releases the seal on the second pressure relief pipe 2503, releasing the pressure on the rear side of the storage bottle 4 without any liquid leakage. Then, the medicine can be evenly applied to the affected area by rolling the application roller 14. After application, the application roller 14 is removed, and the operating handle 19 is moved to the right again. The hole on the transmission adjustment component 15 of the operating handle 19 is aligned with the connection between the first pipe 7 and the third pipe 9. At this time, the cleaning fluid on the front side of the storage bottle 4 enters the third pipe 9 through the adjustment component 15 from the first pipe 7. Pipeline 9, and then through the third pipe 9, reaches the medicine outlet 11, thereby cleaning the pipeline through which the medicine flows, preventing the ointment from drying in the air and clogging the pipeline. After cleaning, continue to move the operating handle 19 to the right. The operating handle 19 drives the adjusting component 15 to move downward until it contacts the connecting shell 6. The adjusting component 15 drives the sliding rod 22 to move. After the sliding rod 22 contacts the connecting shell 6, it stops moving. At this time, the adjusting component 15 continues to move, causing the sliding plate 21 to seal the hole on the adjusting component 15. Then, release the operating handle 19, causing the adjusting component 15 to drive the sliding rod. Move 22 upwards. At this time, the sliding rod 22 first contacts the upper side of the connecting shell 6 and stops moving. The adjusting member 15 continues to move upwards so that the sliding plate 21 releases the blockage of the upper hole of the adjusting member 15 until the adjusting member 15 contacts the upper side of the connecting shell 6 and stops moving. Then, make the axis of the liquid storage bottle 4 vertical. Then press the pressure relief switch 25 on the front side. The pressure relief switch 25 compresses the adjacent third spring 2501 and releases the blockage of the first pressure relief pipe 2502, releasing the air pressure on the front side of the liquid storage bottle 4. Then cover the outer shell 1 and wait for the next use.

[0029] Example 2

[0030] Based on Example 1, please refer to Figure 2 and Figure 7 The mounting part 12 is rotatably connected to a threaded rod 26, and the mounting part 12 is fixedly connected to a fixed rod 27. The fixed rod 27 is slidably connected to a movable part 28 that is threadedly connected to the threaded rod 26. The movable part 28 is fixedly connected to the dispensing head 11. When the threaded rod 26 rotates, it drives the movable part 28 to move along the fixed rod 27, thereby changing the position of the dispensing head 11, so that the dispensing head 11 applies medicine along the axis of the dispensing roller 14.

[0031] Please refer to Figure 2A motor 29 is fixedly connected inside the outer casing 1. The output shaft of the motor 29 is connected to the rotating shaft 13 and the threaded rod 26 via a pulley belt. The motor 29 provides power for the rotation of the threaded rod 26 and drives the two medicine-applying rollers 14 to rotate. During the process of the medicine being squeezed onto the medicine-applying rollers 14 by the medicine-dispensing head 11, the two medicine-applying rollers 14 are evenly coated on the surface of the two medicine-applying rollers 14 by rotating.

[0032] Please refer to Figure 7 The rotating shaft 13 is slidably connected to a second limiting post 30, which is composed of a cylinder and a hemisphere. A fourth spring 31 is provided between the second limiting post 30 and the rotating shaft 13. The second limiting post 30 is used to lock the adjacent coating roller 14. After the coating roller 14 is used, it is moved backward. The coating roller 14 squeezes the adjacent second limiting post 30, causing the second limiting post 30 to move downward and compress the adjacent fourth spring 31, thereby removing the used coating roller 14 and replacing it with a new coating roller 14 for the next use.

[0033] When the operating handle 19 is moved to the right to squeeze the medicine, the motor 29 starts. The output shaft of the motor 29 drives the threaded rod 26 and the rotating shaft 13 to rotate through the pulley belt. During the rotation of the threaded rod 26, the moving part 28 is moved through the thread. The moving part 28 drives the medicine dispensing head 11 to move, so that the medicine dispensing head 11 squeezes the medicine onto the medicine dispensing roller 14 along the axial direction of the medicine dispensing roller 14. At the same time, the two rotating shafts 13 drive the two medicine dispensing rollers 14 to rotate in the same direction, so that the two medicine dispensing rollers 14 evenly spread the medicine on the surface of the two medicine dispensing rollers 14 through the gap between the two medicine dispensing rollers 14, so that the medicine can be applied to the affected area more evenly in the future, and the time required to spread the medicine evenly on the affected area can be reduced.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that variations can be made to these embodiments without departing from the principles and spirit of the present invention, and such variations are also within the scope of protection of the present invention.

Claims

1. A medicine applying device with anti-backflow structure, comprising a housing (1), a head cover (2), a tail cover (3) and a liquid storage bottle (4) detachably mounted on the housing (1), characterized in that: It also includes a partition plate (5), which is fixed inside the liquid storage bottle (4). A connecting shell (6) is fixed inside the outer shell (1). The connecting shell (6) connects a first pipe (7), a second pipe (8), a third pipe (9), and a fourth pipe (10). The first pipe (7) and the second pipe (8) pass through the outer shell (1) and are respectively connected to the liquid storage bottle (4) on both sides of the partition plate (5). The third pipe (9) is connected to the fourth pipe (10). The outer shell (1) is connected to a dispensing head (11), and a mounting part (12) is fixedly connected to the outer shell (1). The mounting part (12) is rotatably connected to two rotating shafts (13). A dispensing roller (14) is detachably installed on the rotating shafts (13). An elastic airbag (401) is fixedly connected inside the outer shell (1). A pressure handle (402) for pressing the elastic airbag (401) is slidably connected to the outer shell (1). The elastic airbag (401) is connected to a pressure pipe (403) that passes through the outer shell (1) and connects to the liquid storage bottle (4).

2. The drug applying device having a backflow preventing structure according to claim 1, wherein: Both the liquid storage bottle (4) and the partition plate (5) are provided with a sealing element between them and the outer shell (1).

3. A drug application device with an anti-backflow structure according to claim 1, characterized in that: The connecting shell (6) is slidably connected to an adjusting member (15). The adjusting member (15) is provided with a hole. The hole of the adjusting member (15) is used to control the connection between the first pipe (7) and the third pipe (9) and the second pipe (8) and the fourth pipe (10). The adjusting member (15) is fixedly connected to a transmission member (16) that is slidably connected to the connecting shell (6). A steering ring (17) is fixedly connected inside the outer shell (1). A first spring (18) is provided between the steering ring (17) and the transmission member (16). The outer shell (1) is slidably connected to an operating handle (19). A pull rope (20) passing through the steering ring (17) is provided between the operating handle (19) and the transmission member (16).

4. A drug application device with an anti-backflow structure according to claim 3, characterized in that: The adjusting member (15) is slidably connected with a sliding plate (21) and a sliding rod (22). The sliding plate (21) is used to block the hole of the adjusting member (15). The sliding plate (21) is fixedly connected to the sliding rod (22). The sliding rod (22) is pressed against the communicating shell (6).

5. A drug application device with an anti-backflow structure according to claim 4, characterized in that: The adjusting member (15) is slidably connected to a first limiting post (23), and a second spring (24) is provided between the first limiting post (23) and the adjusting member (15). The connecting shell (6) is provided with two limiting grooves, and the first limiting post (23) is inserted into the adjacent limiting groove to position the adjusting member (15).

6. A drug application device with an anti-backflow structure according to claim 5, characterized in that: The distance between the midpoints of the two limiting grooves on the connecting shell (6) is equal to the distance between the midpoints of the connection points of the first pipe (7) and the second pipe (8) with the connecting shell (6).

7. A drug application device with an anti-backflow structure according to claim 5, characterized in that: The outer casing (1) is hinged with two pressure relief switches (25). A third spring (2501) is provided between the pressure relief switch (25) and the outer casing (1). The outer casing (1) is fixed with a first pressure relief pipe (2502) and a second pressure relief pipe (2503). The first pressure relief pipe (2502) and the second pressure relief pipe (2503) are respectively connected to the liquid storage bottle (4) on both sides of the partition plate (5). The two pressure relief switches (25) are respectively used to block the first pressure relief pipe (2502) and the second pressure relief pipe (2503).

8. A drug application device with an anti-backflow structure according to claim 1, characterized in that: The mounting component (12) is rotatably connected to a threaded rod (26), and the mounting component (12) is fixedly connected to a fixing rod (27). The fixing rod (27) is slidably connected to a movable component (28) that is threadedly connected to the threaded rod (26). The movable component (28) is fixedly connected to the dispensing head (11).

9. A drug application device with an anti-backflow structure according to claim 8, characterized in that: A motor (29) is fixedly connected inside the outer casing (1), and the output shaft of the motor (29) is connected to the rotating shaft (13) and the threaded rod (26) via a pulley belt.

10. A drug application device with an anti-backflow structure according to claim 9, characterized in that: The rotating shaft (13) is slidably connected to a second limiting post (30), and a fourth spring (31) is provided between the second limiting post (30) and the rotating shaft (13). The second limiting post (30) is used to lock the adjacent coating roller (14).

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