Applicator for external use and use method thereof

Abstract

The invention relates to the technical field of external application, in particular to an external application applicator and a using method thereof.A motor in a mounting cover of the external application applicator drives a driving gear to rotate, the driving gear is meshed with a driven gear, and the number of outer teeth of the driving gear is smaller than that of the outer teeth of the driven gear, so that speed reduction transmission is formed; the threaded sleeve rotates stably under the rotation constraint of the limiting ring, then the extrusion screw arranged in the threaded sleeve in a threaded mode is driven to move, manual rotation is not needed, the problem that manual rotation is strenuous in operation is solved, and the device is particularly convenient for old people to use; the extrusion screw moves to push the piston part to slide in the plaster extrusion cylinder, and the movement distance of the extrusion screw can be accurately controlled by controlling the rotation turns and speed of the motor, so that the extrusion amount of the plaster is accurately controlled, the situation of excessive or insufficient single extrusion is avoided, the operation steps are reduced, and the accurate control of the extrusion amount of the plaster is further ensured.

Description

Technical Field

[0001] This invention relates to the field of topical medication technology, and in particular to a topical medication applicator and its usage method. Background Technology

[0002] Traditional Chinese medicine has the advantages of minimal toxicity and side effects, and does not induce drug resistance. When used to make plasters, it has multiple effects in treating mastitis in cattle and sheep, including clearing heat and detoxifying, antibacterial and anti-inflammatory properties, promoting blood circulation and removing blood stasis, reducing swelling and unblocking meridians, and restoring mammary gland cell function. Clinical applications have shown significant results. When using plasters, an applicator is often used for application.

[0003] Existing patent CN215741331U discloses a topical plaster applicator, including a plaster jar, a plaster extrusion mechanism, and a knob fixing unit. The plaster jar has a circular hole in the middle of its lower end, and a knob is rotatably connected to the lower end of the jar. A locking groove is formed on the side of the knob, and a tightening thread is formed on the upper part of the outer surface of the jar, with a lid threaded onto the tightening thread. The plaster extrusion mechanism is installed in the middle of the upper end of the knob. The knob fixing unit is located on the outer surface of the plaster jar. It also includes a plaster extrusion hole, which is located at the upper end of the lid. Furthermore, the plaster extrusion mechanism includes a slide rod, a threaded shaft, and an extrusion block, with the lower end of the threaded shaft fixedly connected to the middle of the upper surface of the knob. This topical plaster applicator allows for easy control of the amount of plaster extruded, is labor-saving, and is very convenient.

[0004] However, in the aforementioned prior art, manual rotation is extremely laborious, especially for the elderly. At the same time, the structure makes it difficult to control the amount of plaster squeezed out, which can easily lead to too much or too little squeezed out at a time, increasing the number of operation steps. Summary of the Invention

[0005] The purpose of this invention is to provide a topical ointment applicator and its usage method, which solves the technical problems of the prior art where manual rotation is extremely laborious, especially for the elderly, and the difficulty in controlling the amount of ointment squeezed out, which can easily lead to too much or too little ointment squeezed out at one time, increasing the number of operation steps.

[0006] To achieve the above objectives, the present invention provides a topical medicated applicator, comprising a cap and a plaster extrusion cylinder. The cap has an internal thread on its inner side. A threaded sleeve is rotatably mounted on the middle of the cap via a limiting ring. A driven gear is mounted on the threaded sleeve. A pressing screw is mounted on the internal thread of the threaded sleeve. A piston is mounted at one end of the pressing screw. A mounting cover is mounted above the cap. A driving gear is rotatably mounted inside the mounting cover via a motor, and the driven gear extends into the mounting cover. The driving gear meshes with the driven gear, and the number of external teeth on the driving gear is less than the number of external teeth on the driven gear. Limiting elements are mounted at the other ends of the mounting cover and the pressing screw. One end of the plaster extrusion cylinder has an external thread. The cap is threadedly connected to the plaster extrusion cylinder and covers the plaster extrusion cylinder, with the external thread located at the internal thread. The piston is slidably mounted inside the plaster extrusion cylinder.

[0007] The piston component includes a piston body and an extrusion block. The piston body is sleeved on the outside of the extrusion block, the extrusion block is disposed at one end of the extrusion screw, and the extrusion block is slidably disposed on the inside of the plaster extrusion cylinder.

[0008] The plaster extrusion cylinder includes a bottom cylinder and a middle cylinder. A medicine application head is provided below the bottom cylinder, and the medicine application head has a medicine outlet hole. The bottom cylinder is threadedly connected to the middle cylinder and is located below the middle cylinder. The cylinder cap is threadedly connected to the middle cylinder and is located above the middle cylinder.

[0009] The limiting component includes a polygonal rod and a limiting cylinder. The other end of the extrusion screw has a polygonal groove. The polygonal rod is fixedly connected to the limiting cylinder and is located at the inner top of the limiting cylinder. The limiting cylinder is fixedly connected to the mounting cover and is located on the mounting cover. The polygonal rod is inserted into the polygonal groove.

[0010] The outer side of the middle cylinder is provided with a handle and multiple observation glasses.

[0011] The extrusion block has a conical surface at its lower part, and the bottom of the bottom cylinder has a conical groove adapted to the conical surface.

[0012] The present invention also provides a method for using a topical medication applicator, applied to the aforementioned topical medication applicator, comprising the following steps: When the motor is started, it rotates clockwise to drive the drive gear to rotate. The drive gear meshes with the driven gear, and the driven gear rotates at a slower speed, thereby driving the threaded sleeve to rotate. When the threaded sleeve rotates, the extrusion screw that engages with the internal thread will move downward along the axial direction of the threaded sleeve under the action of the limiting member. The extrusion block at one end of the extrusion screw will move downward accordingly. The extrusion block will push the piston body to slide inside the plaster extrusion cylinder, apply pressure to the plaster in the bottom cylinder, and make the plaster move towards the application head. During the process of squeezing the plaster, the remaining amount of plaster in the bottom cylinder and the movement of the plaster can be observed in real time by looking at the multiple observation glasses on the outside of the middle cylinder. If a small amount of plaster is needed, the working time of the motor can be shortened; if a large amount of plaster is needed, the working time of the motor can be extended. Align the applicator head with the area where the ointment needs to be applied, and gently squeeze or move the applicator to evenly apply the ointment from the dispensing hole on the applicator head to the affected area.

[0013] This invention discloses a topical ointment applicator and its usage method. The motor within the mounting cover drives the drive gear to rotate. Since the drive gear meshes with the driven gear, and the number of external teeth on the drive gear is less than that on the driven gear, a speed reduction transmission is formed. This allows the threaded sleeve to rotate smoothly under the rotational constraint of the limiting ring, thereby driving the extrusion screw, which is threaded within the threaded sleeve, to move. This eliminates the need for manual rotation, avoiding the laborious problem of manual operation, and is especially convenient for the elderly. The movement of the extrusion screw pushes the piston to slide within the ointment extrusion cylinder. By controlling the number of rotations and speed of the motor, the moving distance of the extrusion screw can be precisely controlled, thereby precisely controlling the amount of ointment extruded, avoiding excessive or insufficient extrusion in a single operation, reducing operational steps. Simultaneously, the limiting member limits the extrusion screw, ensuring its stable movement and further ensuring precise control of the ointment extrusion amount. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a three-dimensional perspective view of the present invention.

[0016] Figure 2 This is the front view of the present invention.

[0017] Figure 3 This is the invention Figure 2 A cross-sectional view along line AA in the middle.

[0018] Figure 4 This is the invention Figure 3 A magnified view of a section at point B in the middle.

[0019] Figure 5 This is the invention Figure 3 A magnified view of a section at point C.

[0020] Figure 6 This is the invention Figure 3 A cross-sectional view of the DD line.

[0021] Figure 7 This is a flowchart illustrating the steps of using a topical application device according to the present invention.

[0022] 1-Cylinder cap, 2-Plaster extrusion cylinder, 3-Internal thread, 4-Limiting ring, 5-Threaded sleeve, 6-Driven gear, 7-Extrusion screw, 8-Mounting cover, 9-Motor, 10-Driving gear, 11-External thread, 12-Piston body, 13-Extrusion block, 14-Bottom cylinder, 15-Middle cylinder, 16-Applying head, 17-Dispensing hole, 18-Polygonal rod, 19-Limiting cylinder, 20-Polygonal groove, 21-Handle, 22-Observation glass, 23-Conical surface, 24-Conical groove. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] Please see Figures 1-6 This invention provides a topical ointment applicator, comprising a cap 1 and an ointment extrusion cylinder 2. The cap 1 has an internal thread 3 on its inner side. A threaded sleeve 5 is rotatably mounted on the middle of the cap 1 via a limiting ring 4. A driven gear 6 is mounted on the threaded sleeve 5. A pressing screw 7 is mounted on the internal thread 3 of the threaded sleeve 5. A piston is mounted at one end of the pressing screw 7. A mounting cover 8 is mounted above the cap 1. A driving gear 10 is rotatably mounted inside the mounting cover 8 via a motor 9, and the driven gear 6 extends to the... Inside the mounting cover 8, the driving gear 10 meshes with the driven gear 6, and the number of external teeth of the driving gear 10 is less than the number of external teeth of the driven gear 6. The other end of the mounting cover 8 and the extrusion screw 7 is provided with a limiting member. One end of the plaster extrusion cylinder 2 has an external thread 11. The cylinder cover 1 is threadedly connected to the plaster extrusion cylinder 2 and covers the plaster extrusion cylinder 2. The external thread 11 is located at the internal thread 3. The piston is slidably disposed inside the plaster extrusion cylinder 2.

[0025] In this embodiment, the motor 9 installed inside the mounting cover 8 drives the drive gear 10 to rotate. Since the drive gear 10 meshes with the driven gear 6 and the number of external teeth of the drive gear 10 is less than the number of external teeth of the driven gear 6, a speed reduction transmission structure is formed, allowing the threaded sleeve 5 to rotate smoothly under the rotation constraint of the limiting ring 4. The rotation of the threaded sleeve 5 drives the extrusion screw 7, whose threads are set therein, to move, thereby pushing the piston to slide inside the plaster extrusion cylinder 2, extruding the plaster. This electric drive method abandons the traditional manual rotation operation mode, greatly reducing the operating effort, especially for the elderly, who do not need to expend a lot of physical strength to rotate, making it easier and more convenient to use. At the same time, by precisely controlling the number of rotations and speed of the motor 9, the moving distance of the extrusion screw 7 can be precisely controlled, thereby precisely controlling the amount of plaster extruded, avoiding the situation of extruding too much or too little at a time, reducing unnecessary operation steps, and improving the efficiency and accuracy of applying the medicine.

[0026] Furthermore, the piston component includes a piston body 12 and an extrusion block 13. The piston body 12 is sleeved on the outside of the extrusion block 13, the extrusion block 13 is disposed at one end of the extrusion screw 7, and the extrusion block 13 is slidably disposed on the inside of the plaster extrusion cylinder 2.

[0027] In this embodiment, the extrusion block 13, driven by the extrusion screw 7, can directly apply force to the plaster, extruding it from the plaster extrusion cylinder 2. The piston body 12, sleeved on the outside of the extrusion block 13, not only enhances the extrusion effect on the plaster, making the extrusion more uniform and thorough, reducing plaster residue in the plaster extrusion cylinder 2, and improving the utilization rate of the plaster; but also, the piston body 12 acts as a seal, preventing leakage of the plaster during extrusion, ensuring a clean and hygienic application process, and avoiding plaster waste and environmental pollution.

[0028] Furthermore, the plaster extrusion cylinder 2 includes a bottom cylinder 14 and a middle cylinder 15. A medicine application head 16 is provided below the bottom cylinder 14. The medicine application head 16 has a medicine outlet hole 17. The bottom cylinder 14 is threadedly connected to the middle cylinder 15 and is located below the middle cylinder 15. The cylinder cover 1 is threadedly connected to the middle cylinder 15 and is located above the middle cylinder 15.

[0029] In this embodiment, after a period of use, the bottom tube 14, the middle tube 15 and the tube cover 1 can be disassembled and each component thoroughly cleaned to prevent the growth of bacteria from plaster residue and ensure hygiene and safety for the next use.

[0030] Furthermore, the limiting member includes a polygonal rod 18 and a limiting cylinder 19. The other end of the extrusion screw 7 has a polygonal groove 20. The polygonal rod 18 is fixedly connected to the limiting cylinder 19 and is located at the inner top of the limiting cylinder 19. The limiting cylinder 19 is fixedly connected to the mounting cover 8 and is located on the mounting cover 8. The polygonal rod 18 is inserted into the polygonal groove 20.

[0031] In this embodiment, the polygonal rod 18 and the polygonal groove 20 cooperate to provide precise positioning and guidance during the movement of the extrusion screw 7, preventing the extrusion screw 7 from rotating or deviating during the movement and ensuring that it can only move in a straight line.

[0032] Furthermore, the outer side of the middle cylinder 15 is provided with a handle 21 and multiple observation glasses 22.

[0033] In this embodiment, the handle 21 is designed in accordance with ergonomic principles, making it convenient for users to hold the applicator and better control the operating force and direction of the applicator during the application process. Furthermore, the clockwise and counterclockwise start buttons for the motor 9 can be located on the handle 21, which facilitates better control of the forward and reverse rotation of the motor 9. The multiple observation glasses 22 allow users to observe the remaining amount of plaster in the plaster extrusion cylinder 2 at any time, understand the usage status of the plaster in a timely manner, and replenish or replace it when the plaster is insufficient.

[0034] Furthermore, the extrusion block 13 has a conical surface 23 below it, and the bottom of the bottom cylinder 14 has a conical groove 24 adapted to the conical surface 23.

[0035] In this embodiment, when the extrusion block 13 moves downward to extrude the plaster, the cooperation between the conical surface 23 and the conical groove 24 enables the plaster to converge more concentratedly towards the application head 16, forming a stronger extrusion pressure, which helps to extrude the plaster more thoroughly and evenly, and reduces the residue of the plaster at the bottom of the bottom cylinder 14.

[0036] When using the external application device of this embodiment, the user first holds the handle 21 on the outside of the middle cylinder 15 to hold the application device stably, and checks the remaining amount of plaster in the plaster extrusion cylinder 2 through the multiple observation glasses 22 on the outside of the middle cylinder 15. If the plaster is insufficient, it is replenished or replaced. Then, the motor 9 inside the mounting cover 8 is turned on. The motor 9 drives the drive gear 10 to rotate. Because the drive gear 10 meshes with the driven gear 6 and the number of external teeth is different, a speed reduction transmission is formed, so that the threaded sleeve 5 rotates smoothly under the constraint of the limiting ring 4, thereby driving the extrusion screw 7 with the thread set therein to move downward. The extrusion block 13 at one end of the extrusion screw 7 (with a conical surface 23 below it that adapts to the conical groove 24 at the bottom of the bottom cylinder 14) moves downward, pushing the piston (the piston body 12 is sleeved on the outside of the extrusion block 13) to slide inside the plaster extrusion cylinder 2, extruding the plaster from the application head 16 with the medicine outlet 17 below the bottom cylinder 14. The user can precisely adjust the amount of plaster extruded by controlling the rotation of the motor 9 as needed to complete a uniform and accurate application operation.

[0037] Based on the above, please refer to Figure 7 The present invention also provides a method for using a topical application device, which is applied to the topical application device described above, and includes the following steps: S1: Start the motor 9 and drive the drive gear 10 to rotate clockwise. The drive gear 10 meshes with the driven gear 6. The driven gear 6 will rotate at a slower speed, thereby driving the threaded sleeve 5 to rotate. S2: When the threaded sleeve 5 rotates, the extrusion screw 7, which is engaged with the internal thread 3, will move downward along the axial direction of the threaded sleeve 5 under the action of the limiting member. The extrusion block 13 at one end of the extrusion screw 7 will move downward accordingly. The extrusion block 13 pushes the piston body 12 to slide in the plaster extrusion cylinder 2, applying pressure to the plaster in the bottom cylinder 14, so that the plaster moves towards the application head 16. S3: During the process of squeezing the plaster, by observing the multiple observation glass 22 on the outside of the middle cylinder 15, the remaining amount of plaster in the bottom cylinder 14 and the movement of the plaster can be monitored in real time. S4: If a small amount of plaster is needed, the working time of the motor 9 can be shortened; if a large amount of plaster is needed, the working time of the motor 9 can be extended. S5: Align the application head 16 with the area where the ointment needs to be applied, and gently squeeze or move the applicator to evenly apply the ointment from the dispensing hole 17 on the application head 16 to the affected area.

[0038] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A topical application device, characterized in that, The device includes a cap and a plaster extrusion cylinder. The cap has an internal thread on its inner side. A threaded sleeve is rotatably mounted on the middle of the cap via a limiting ring. A driven gear is mounted on the threaded sleeve. A pressing screw is mounted on the internal thread of the threaded sleeve. A piston is mounted at one end of the pressing screw. A mounting cover is mounted above the cap. A driving gear is rotatably mounted inside the mounting cover via a motor. The driven gear extends into the mounting cover and meshes with the driven gear. The number of external teeth on the driving gear is less than the number of external teeth on the driven gear. Limiting elements are mounted at the other ends of the mounting cover and the pressing screw. One end of the plaster extrusion cylinder has an external thread. The cap is threadedly connected to the plaster extrusion cylinder and covers the plaster extrusion cylinder. The external thread is located at the internal thread. The piston is slidably mounted inside the plaster extrusion cylinder.

2. The external application device as described in claim 1, characterized in that, The piston assembly includes a piston body and an extrusion block. The piston body is sleeved on the outside of the extrusion block, the extrusion block is disposed at one end of the extrusion screw, and the extrusion block is slidably disposed on the inside of the plaster extrusion cylinder.

3. The external application device as described in claim 2, characterized in that, The plaster extrusion cylinder includes a bottom cylinder and a middle cylinder. A medicine application head is provided below the bottom cylinder, and the medicine application head has a medicine outlet hole. The bottom cylinder is threadedly connected to the middle cylinder and is located below the middle cylinder. The cylinder cap is threadedly connected to the middle cylinder and is located above the middle cylinder.

4. The external application device as described in claim 3, characterized in that, The limiting component includes a polygonal rod and a limiting cylinder. The other end of the extrusion screw has a polygonal groove. The polygonal rod is fixedly connected to the limiting cylinder and is located at the inner top of the limiting cylinder. The limiting cylinder is fixedly connected to the mounting cover and is located on the mounting cover. The polygonal rod is inserted into the polygonal groove.

5. The external application device as described in claim 4, characterized in that, The outer side of the middle cylinder is equipped with a handle and multiple observation glasses.

6. The external application device as described in claim 5, characterized in that, The extrusion block has a conical surface at its bottom, and the bottom of the bottom cylinder has a conical groove adapted to the conical surface.

7. A method of using a topical medication applicator, applied to the topical medication applicator as described in claim 6, characterized in that, Includes the following steps: When the motor is started, it rotates clockwise to drive the drive gear to rotate. The drive gear meshes with the driven gear, and the driven gear rotates at a slower speed, thereby driving the threaded sleeve to rotate. When the threaded sleeve rotates, the extrusion screw that engages with the internal thread will move downward along the axial direction of the threaded sleeve under the action of the limiting member. The extrusion block at one end of the extrusion screw will move downward accordingly. The extrusion block will push the piston body to slide inside the plaster extrusion cylinder, apply pressure to the plaster in the bottom cylinder, and make the plaster move towards the application head. During the process of squeezing the plaster, the remaining amount of plaster in the bottom cylinder and the movement of the plaster can be observed in real time by looking at the multiple observation glasses on the outside of the middle cylinder. If a small amount of plaster is needed, the working time of the motor can be shortened; if a large amount of plaster is needed, the working time of the motor can be extended. Align the applicator head with the area where the ointment needs to be applied, and gently squeeze or move the applicator to evenly apply the ointment from the dispensing hole on the applicator head to the affected area.

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