A multi-chambered applicator

Abstract

This application discloses a cavity-type drug applicator, including a receiving part, a guiding part, and a squeezing part. The receiving part includes a receiving cylinder with several receiving cavities circumferentially formed on its side wall. Several slots are formed at the front end of the receiving cylinder, communicating with the receiving cavities. An adjusting groove is formed on the circumferentially formed on the front side wall of the receiving cylinder. The guiding part is detachably connected to the front end of the receiving cylinder. The front end of the guiding part is tapered, and its interior has pipes matching the number of slots. The squeezing part includes a fixed handle with a fixed ring at its top, which is fitted onto the front middle part of the receiving cylinder. A limiting member is provided on the fixed ring, engaging with the adjusting groove. A movable handle is provided at the rear of the fixed handle. A guide and reset assembly is provided between the fixed handle and the movable handle. A pushing assembly is provided at the rear end of the movable handle. A squeezing rod is movably connected to the top end of the pushing assembly. A squeezing head is provided at the front end of the squeezing rod, and a positioning member is fitted on the squeezing rod. The top of the positioning member is rotatably connected to the rear end of the receiving cylinder. This drug applicator can simultaneously pick up multiple drugs and use them sequentially.

Description

Technical Field

[0001] This application relates to the field of medical assistive device technology, and in particular to a cavity-type drug applicator. Background Technology

[0002] Oral ulcers, erosions, papules, and plaques are a series of common lesions that occur on the oral mucosa. Treatment usually involves applying medication to the lesions.

[0003] During medication application, various medications such as saline solution, antibacterial solutions, and moisturizing gels are often used. The current procedure typically involves oral cleaning, sterilization, and moisturizing. However, nowadays, healthcare workers often need to first obtain saline solution for oral cleaning, then return the saline solution container to the cart; next, obtain the antibacterial solution for sterilization, then return the antibacterial solution container to the cart; and finally, obtain the moisturizing gel for moisturizing, then return the moisturizing gel container to the cart. During the application process, healthcare workers need to repeatedly turn between the patient and the cart, repeatedly handling different medications and instruments. This process increases the workload for healthcare workers and may prolong the treatment time. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a cavity-type drug applicator that can simultaneously pick up multiple drugs and use them sequentially.

[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0006] A cavity-type applicator includes a receiving part, a guiding part, and a squeezing part;

[0007] The receiving part includes a receiving cylinder, the side wall of the receiving cylinder is provided with a plurality of receiving cavities, the front end of the receiving cylinder is provided with a plurality of slots, the slots are connected to the receiving cavities; the front side wall of the receiving cylinder is provided with an adjustment slot.

[0008] The guide section is detachably connected to the front end of the receiving cylinder. The front end of the guide section is tapered, and its interior has a pipe that matches the number of bayonets.

[0009] The extrusion section includes a fixed handle, a fixed ring at the top of the fixed handle, the fixed ring being fitted onto the front middle part of the receiving cylinder, and a limiting member on the fixed ring, the limiting member being engaged in an adjusting groove; a movable handle is provided at the rear side of the fixed handle, a guide and reset assembly is provided between the fixed handle and the movable handle, a push assembly is provided at the rear end of the movable handle, an extrusion rod is movably connected to the top end of the push assembly, an extrusion head is provided at the front end of the extrusion rod, a positioning member is fitted onto the extrusion rod, and the top of the positioning member is rotatably connected to the rear end of the receiving cylinder.

[0010] The receiving section is used to classify and pre-fill different small tubes of drugs, the guiding section is used to guide the drugs into the patient's mouth, and the squeezing section is used to squeeze out the drugs from the receiving section.

[0011] In some embodiments, the adjusting slot includes a shallow slot and a deep slot. The shallow slot is formed around the circumference of the receiving cylinder, and the deep slot is located in the middle of the shallow slot. An arc-shaped transition surface is provided at the connection between the shallow and deep slots. This addresses the problem of how to temporarily lock the fixed handle.

[0012] In some embodiments, the front end face of the receiving cylinder is provided with a stopper.

[0013] Further extending the above solution, the rear end face of the guide section is provided with a plug hole that matches the plug block. This solves the problem of how to position the guide section and the receiving cylinder for connection.

[0014] In some embodiments, a sponge sleeve is provided on the front side of the guide portion to address how to evenly apply medication to the lesion surface.

[0015] In some embodiments, the limiting member includes a fixed end and a telescopic end, the fixed end being connected to a fixing ring, and the telescopic end engaging with a deep groove. This addresses how to disengage the limiting member from the deep groove and allow it to enter a shallow groove.

[0016] In some embodiments, the guide reset assembly includes a guide rod slidably passing through a movable handle. A reset spring is sleeved on the guide rod, with its front end abutting against the rear end of a fixed handle and its rear end abutting against the front end of the movable handle. This addresses how to achieve automatic reset of the movable handle.

[0017] In some embodiments, the propulsion assembly includes a guide plate, the rear end of which is hinged to a right-angle plate, the right-angle plate including a horizontal plate and a vertical plate, the vertical plate being arranged upwards, the left and right sides of the vertical plate having locking interfaces respectively, and the top being hinged to a locking block.

[0018] Further extending the above scheme, the top of the extrusion rod is provided with several locking slots at equal intervals along its length for locking blocks to engage, thereby achieving linear or step-by-step propulsion.

[0019] In some embodiments, the front end of the extrusion head has an extrusion ramp. This solves the problem of how to extrude tubular drugs.

[0020] Compared to existing technologies, this application achieves at least the following beneficial effects: This applicator houses all medications used for oral mucosal treatment within a receiving cylinder. Through the cooperation of the squeezing part and the propulsion component, the outer shell of the tube-packaged medication is squeezed from the rear end, pushing the medication to the guide section to complete oral mucosal disinfection. After the propulsion component retracts, the receiving cylinder is rotated, causing additional medications on the cylinder to rotate to the front of the propulsion component. By adjusting the limiting position of the slot, the squeezing part can be controlled to expel the medication through the guide section to the lesion area of ​​the oral mucosa. Repeating the aforementioned operation sequentially completes oral cleaning, sterilization, and moisturizing steps. Using this applicator reduces the need for medical staff to repeatedly turn between patients and nursing carts, and to handle different medications and instruments, thus reducing the workload of medical staff and shortening the duration of the application treatment. Attached Figure Description

[0021] One or more embodiments of this application will now be described by way of example only with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a perspective view of an applicator according to one embodiment of this application;

[0023] Figure 2 for Figure 1 Side view of the applicator in the embodiment adjusted to a step-advance state;

[0024] Figure 3 This is a perspective view of the guide section in an applicator according to another embodiment of this application;

[0025] Figure 4 This is a perspective view of the receiving portion in a medicine applicator according to yet another embodiment of this application;

[0026] Figure 5 This is a side sectional view of the extrusion section in the applicator of this application;

[0027] Figure 6 for Figure 5 A partial schematic diagram at point A in the embodiment;

[0028] Figure 7 for Figure 5 A partial schematic diagram at point B in the embodiment.

[0029] The numbers on the map are:

[0030] 1. Sponge sleeve;

[0031] 2. Guide section; 21. Pipe; 22. Plug hole; 23. Locking hole; 24. Hook body;

[0032] 3. Receiving cylinder; 31. Plug; 32. Bayonet; 321. Limiting rib; 33. Groove; 34. Shallow groove; 341. Clearance surface; 35. Deep groove; 36. Exit surface; 37. Receiving cavity; 38. Limiting protrusion;

[0033] 4. Retaining ring; 41. Cylindrical sleeve;

[0034] 5. Limiting component; 51. Piston body; 52. Support spring; 53. Limiting shaft; 54. Telescopic shaft;

[0035] 6. Tube-packaged drugs; 7. Sliding rings;

[0036] 8. Extrusion rod; 81. Snap-fit ​​groove;

[0037] 9. Right-angle plate; 10. Guide plate; 11. Guide rod; 12. Movable handle; 13. Return spring; 14. Fixed handle; 15. Positioning guide sleeve; 16. Connecting block; 17. Rotating sleeve; 18. Pressing head; 19. Snap-fit ​​block. Detailed Implementation

[0038] The present application will now be described in detail with reference to exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0039] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application.

[0040] To address the shortcomings of existing technologies that prevent the simultaneous and sequential application of multiple medications, the inventors, after careful analysis, discovered that the main reason for this problem lies in the fact that single-use 10-15ml saline solutions, antibacterial solutions, and moisturizing gels are often packaged in tubes. When squeezing out the liquid, the tube must be held with one hand and even pressure applied. Holding multiple containers simultaneously not only makes it difficult to stably extrude the medication but also easily leads to dripping or uncontrolled dosage. Based on this analysis, the inventors designed a medication applicator with multiple cavities to prevent different tube-packaged medications from being dispensed, and capable of either single-pass extrusion or step-by-step application depending on the medication's needs.

[0041] like Figure 1-7 As shown, in at least one embodiment of the cavity-type applicator of this application, it includes a receiving part, a guiding part 2, and a squeezing part.

[0042] The receiving section is used to hold 10-15ml of portable saline solution, ointments in aluminum tubes, and gels. The receiving section includes a receiving cylinder 3, made of transparent plastic (such as acrylic or PVC). Three receiving cavities 37 are formed on the circumference of the side wall of the receiving cylinder 3. The internal cross-section of each cavity 37 is circular and communicates with the outer surface of the receiving cylinder 3, with its rear end extending through the rear end face of the receiving cylinder 3. Three U-shaped latches 32 are formed at the front end of the receiving cavities 37 and communicate with them. The receiving cavities 37 are used to hold the tube bodies of these packaged medications 6, and the latches 32 are used to hold the extrusion ends of these packaged medications 6. On the inner wall of the bayonet 32, several limiting ribs 321 are provided at intervals. When the extrusion end of the tube-packaged drug 6 is engaged in the bayonet 32, the thread of the extrusion end engages with these limiting ribs 321 to form a limit. In this way, when the guide part 2 is installed, it can prevent the guide part 2 from pushing the tube-packaged drug 6 backward. An adjustment groove is provided on the circumference of the front side wall of the receiving cylinder 3.

[0043] The guide section 2 is detachably connected to the front end of the receiving cylinder 3. The guide section 2 is also made of transparent plastic, with a tapered front end that extends forward, giving it a funnel shape. The guide section 2 has a small diameter and a certain length, reducing the obstruction of the applicator when inserted into the patient's mouth. Inside the guide section 2 are pipes 21 matching the number of slots 32 (the diameter of the pipes 21 for liquid medication can be 0.8-1 mm, and the diameter of the pipes 21 for ointment can be 1-1.5 mm). These pipes 21 correspond to the positions of the slots 32 and are used to abut against the extrusion port of the packaged medication 6, covering the pipes 21. To reduce leakage of medication between the guide section 2 and the rear end face, three locking holes 23 are provided on the rear end face of the guide section 2, each connected to one of the three pipes 21. The inner diameter of the retaining hole 23 is slightly smaller than the extrusion port of the tubular drug 6. When the guide part 2 is installed at the front end of the receiving cylinder 3, the extrusion port of the tubular drug 6 is engaged in the retaining hole 23, forming a larger contact surface, thereby reducing drug leakage. In addition, rubber rings can be installed in these retaining holes 32. The contact seal between the rubber ring and the extrusion port can further improve the drug leakage prevention effect.

[0044] The extrusion section includes a fixed handle 14, which is made of plastic and has a rectangular structure. It is vertically arranged below the receiving cylinder 3. A fixed ring 4 is integrally formed on the top of the fixed handle 14 and is fixed to the front middle part of the receiving cylinder 3. A limiting member 5 is installed on the fixed ring 4 and is engaged in the adjusting groove. A movable handle 12 is provided on the rear side of the fixed handle 14. The movable handle 12 has the same structure as the fixed handle 14. A guide reset assembly is installed between the fixed handle 14 and the movable handle 12. A push assembly for pushing the extrusion rod 8 is installed at the rear end of the movable handle 12. The top end of the push assembly is movably connected to the extrusion rod 8. The front end of the extrusion rod 8 is connected to an extrusion head 18 for extruding the outer surface of the tube-packaged drug 6. A positioning member is sleeved on the extrusion rod 8. The top of the positioning member is rotatably connected to the rear end of the receiving cylinder 3 to ensure that when the receiving cylinder 3 is rotated, the extrusion rod 8 and the extrusion head 18 can be kept facing downwards and not rotated with the receiving cylinder 3.

[0045] Multiple independent receiving cavities 37 are opened around the circumference of the receiving cylinder 3 to achieve classified pre-loading of different drugs (such as saline, antibacterial solution, moisturizing gel), avoiding the need to turn around and retrieve drugs repeatedly; through the cooperation of the guide part 2 and the latch 32, the drugs in each receiving cavity 37 are guided to the front application site, so as to squeeze out different drugs sequentially or selectively with a single instrument; through the squeezing part, medical staff can operate with one hand to push the drugs in each cavity in sequence, without having to turn around and retrieve items repeatedly between the patient and the nursing cart.

[0046] like Figure 3As shown, the opening of the three receiving cavities 37 creates three disconnected surfaces on the outer circumference of the receiving cylinder 3. The adjusting groove includes shallow grooves 34 and deep grooves 35. The shallow grooves 34 are circumferentially arranged around the outer wall of the receiving cylinder 3, and there are three deep grooves 35, located at the midpoint of the length of the shallow grooves 34 on the three surfaces of the receiving cylinder 3. The connection between the shallow grooves 34 and the deep grooves 35 is provided with an arc-shaped transition surface to facilitate the sliding of the limiting member 5 between the shallow grooves 34 and the deep grooves 35, avoiding hard impact. Among them, between the three shallow grooves 34 and the deep grooves 35, there is also a withdrawal surface 36, which is flush with the circular outer wall of the receiving cylinder 3, to facilitate the withdrawal of the limiting member 5, thereby removing the fixing ring 4 from the receiving cylinder 3. The left and right ends of the three shallow grooves 34 are arc-shaped relief surfaces 341, which facilitate the sliding of the telescopic end of the limiting member 5 into the corresponding shallow groove 34 when the receiving cylinder 3 is rotated, avoiding jamming.

[0047] The front end face of the receiving cylinder 3 is integrally formed with three cylindrical plugs 31. The rear end face of the guide part 2 has plug holes 22 that match the plugs 31, and the plugs 31 are inserted into the corresponding plug holes 22. Through the cooperation of the plugs 31 and the plug holes 22, the receiving cylinder 3 and the guide part 2 are positioned and connected, preventing the drug delivery pipe 21 from being misaligned due to relative rotation or loosening. In addition, in order to prevent the force of the ointment or liquid from pushing the guide part 2 and separating it from the receiving cylinder 3 during the squeezing process, three hooks 24 are provided on the outside of the guide part 2. The hooks 24 include a plastic plate that extends rearward, and the rear end of the plastic plate has a protrusion inside. On the front side of the receiving cylinder 3, three hook grooves 33 corresponding to the hooks 24 are provided. The front end of the hook grooves 33 communicates with the front end of the receiving cylinder 3, and the bottom surface of the rear end has a notch for engaging with the protrusion of the hook 24. The plastic plate in the hook body 24 protrudes from the outer circumferential wall of the receiving cylinder 3, which makes it easy to snap the hook body 24 and remove the guide part 2.

[0048] A cylindrical sponge sleeve 1 with a thickness of 1-2 mm is adhered to the front side of the guide section 2. The sponge sleeve 1 can be used to absorb saline or excess medication, and can also be used to evenly apply medication to the surface of oral mucosal lesions. When using the sponge sleeve 1 sequentially, it is necessary to wipe it with sterile gauze or sterile wipes according to different steps.

[0049] The limiting component 5 is a spring plunger, which includes a fixed end and a telescopic end. The fixed end is a cylindrical plunger body 51, and the telescopic end is a cylindrical telescopic shaft 54. A through hole is formed at the bottom of the plunger body 51, and the telescopic shaft 54 ​​is installed within the through hole. A space exists between the top of the telescopic shaft 54 ​​and the top of the inner cavity of the plunger body 51. A support spring 52 is installed within this space. The top end of the support spring 52 abuts against the top wall inside the plunger body 51, and the bottom end abuts against the top of the telescopic shaft 54. The bottom of the telescopic shaft 54 ​​protrudes from the bottom of the plunger body 51, and its bottom edge is chamfered. A transverse through hole is formed on the side of the plunger body 51, and a cylindrical limiting shaft 53, arranged perpendicular to the axis of the plunger body 51, is fixedly installed within the through hole. A stroke groove is formed on the side wall of the telescopic shaft 54, and the stroke groove is arranged vertically along the axis of the telescopic shaft 54. The telescopic shaft 54 ​​is sleeved onto the limiting shaft 53 through a travel groove. When the telescopic shaft 54 ​​is not under pressure, the limiting shaft 53 is located at the top of the travel groove.

[0050] The outer wall of the fixed end is threaded. A cylindrical sleeve 41, perpendicular to the fixed ring 4, is integrally formed on the outer wall of the fixed ring 4, and the cylindrical sleeve 41 has internal threads. The fixed end is screwed into the cylindrical sleeve 41 via a threaded connection. The telescopic end of the limiting member 5 faces the center of the fixed ring 4. The fixed ring 4 is rotatably fitted into the shallow groove 34, while the telescopic end is engaged in the deep groove 35.

[0051] When it is necessary to switch the receiving cavity 37, medical staff apply a certain rotational force to make the telescopic end disengage from the deep groove 35 and enter the shallow groove 34, thereby realizing the circumferential rotation adjustment of the receiving cylinder 3; after the adjustment is in place, the telescopic end slides and springs into the next deep groove 35, thereby realizing the instant position locking and fixing the fixed handle 14 in the current position.

[0052] A sliding ring 7 is integrally formed above the movable handle 12, and the sliding ring 7 is slidably sleeved on the middle and rear part of the receiving cylinder 3. On the surface of the receiving cylinder 3, behind the sliding ring 7, there is a spherical limiting protrusion 38, which is used to prevent the sliding ring 7 from falling out of the receiving cylinder 3.

[0053] The guide and reset assembly includes a cylindrical guide rod 11. The front end of the guide rod 11 is preferably glued to the rear end of the fixed handle 14. A through hole is provided at the front end of the movable handle 12, through which the rear end of the guide rod 11 slidably passes. A reset spring 13 is fitted onto the guide rod 11. The front end of the reset spring 13 abuts against the rear end of the fixed handle 14, and the rear end abuts against the front end of the movable handle 12. The diameter of the reset spring 13 does not exceed the width of the fixed handle 14 and the movable handle 12, and the performance of the reset spring 13 is selected based on the elastic force required to push the movable handle 12 back to its original position. After the medical staff squeezes the movable handle 12 towards the fixed handle 14 to push the medication, the movable handle 12 is reset by the guidance of the guide rod 11 and the reaction force of the reset spring 13, preparing for the next squeezing operation. Additionally, a flange is provided at the rear end of the guide rod 11 to prevent the movable handle 12 from disengaging.

[0054] The propulsion assembly includes a guide plate 10, which is a rectangular plate structure made of rigid plastic, integrally formed on the upper rear end of the movable handle 12. A right-angle plate 9 made of plastic or metal is installed on the top rear end of the guide plate 10. The right-angle plate 9 includes a horizontal plate and a vertical plate, with the vertical plate located at the rear end of the horizontal plate and facing upwards. On the top surfaces of the horizontal plate and the guide plate 10 of the right-angle plate 9, coaxially distributed through holes are formed. A cylindrical shaft is installed in the coaxial through holes, and the top and bottom surfaces of the shaft are respectively provided with flanges to prevent it from falling out of the through holes. The guide plate 10 and the right-angle plate 9 are hinged through the shaft. The upper left and right sides of the vertical plate are respectively provided with locking interfaces, and the top is provided with a rectangular groove. The front and rear ends of the groove are provided with through holes, and a cylindrical pin is hinged in the through holes. A rectangular locking block 19 is integrally formed on the side of the cylindrical pin.

[0055] The extrusion rod 8 is a rectangular plastic rod with several locking grooves 81 evenly spaced along its length at its top for locking the locking blocks 19 to engage. The rear end face of the locking groove 81 is inclined, corresponding to the arrangement angle of the locking blocks 19, and the front end face is vertical to facilitate the pushing of the locking blocks 19.

[0056] When a large amount of fluid needs to be dispensed (such as saline or liquid), adjust the right-angle plate 9 of the applicator of this device to the position as follows: Figure 1 and Figure 5 In the state shown, the card interface on the left side of the vertical plate is engaged with the extrusion rod 8. Then, the card block 19 is swung forward and adjusted to engage into the corresponding card slot 81. At this time, there is a large distance between the card block 19 and the positioning member. When the movable handle 12 is driven to approach the fixed handle 14, the card block 19 pushes forward against the front end face of the card slot 81. The extrusion rod 8 drives the extrusion head 18 to extrude the rear end of the tube-filled medicine 6 and gradually move towards the front end. The medicine in the bottle is squeezed out to the guide part 2 and sprayed out from the corresponding pipe 21 of the guide part 2.

[0057] When small amounts need to be dispensed (such as ointments or gels that need to be dispensed in small amounts multiple times to different treatment areas), rotate and adjust the right-angle plate 9 of the applicator of this device to the desired position. Figure 2 In the state shown, the locking interface on the right side of the vertical plate is engaged with the extrusion rod 8. Then, the locking block 19 is swung forward (relative to the state where a large amount of medicine needs to be extruded, the locking block 19 is arranged backward) and adjusted to be engaged into the corresponding locking groove 81. At this time, the locking block 19 and the positioning member are close to each other. When the movable handle 12 is driven to approach the fixed handle 14, the locking block 19 pushes forward against the front end face of the locking groove 81. The extrusion rod 8 drives the extrusion head 18 to extrude the rear end of the bottle body of the tube-packaged medicine 6 and gradually move towards the front end. The medicine in the bottle body is extruded into the guide part 2 and squeezed out from the corresponding pipe 21 of the guide part 2. Because the locking block 19 is close to the positioning element, after a small amount of the ointment is squeezed out, the locking block 19 contacts the positioning element and forms a limit. When the movable handle 12 is released, the return spring 13 pushes it to return to its original position. At this time, during the backward movement, the locking block 19 is pushed up by the inclined surface of the locking groove 81 and passes over the locking groove 81 (at this time, the extrusion head 18 is pressed between the receiving cavity 37 and the tube-shaped medicine 6, and there is friction, so it will not move backward). Then, the movable handle 12 continues to be driven closer to the fixed handle 14, and the extrusion rod 8 drives the extrusion head 18 to continue to extrude the body of the tube-shaped medicine 6 and gradually move towards the front end. The medicine in the bottle is squeezed out to the guide part 2 and squeezed out from the corresponding pipe 21 of the guide part 2. This realizes a step-by-step extrusion method.

[0058] like Figure 7 As shown, the bottom surface of the groove at the top of the vertical plate has a right-angle notch to prevent the snap-fit ​​block 19 from swinging backward so that its swing angle can be consistent with its forward swing angle, so as to match the slope of the rear end face of the snap-fit ​​groove 81.

[0059] Since the rear end of a typical tube of medication 6 is generally flattened, to prevent the extrusion head 18 from directly hitting the rear end of the tube of medication 6, such as... Figure 5 As shown, the front end of the extrusion head 18 has an extrusion ramp. Specifically, it slopes upwards and backwards from the middle of the front end of the extrusion head 18. In addition, there is a gap between the top surface of the extrusion head 18 and the receiving cavity 37, through which the rear end of the tube-packaged drug 6 passes.

[0060] The positioning components of this applicator include a cylindrical positioning guide sleeve 15, which is arranged laterally. The front end of the positioning guide sleeve 15 has a through hole for the extrusion rod 8 to pass through. At the top of the positioning guide sleeve 15, a rectangular connecting block 16 is integrally formed, with a thickness smaller than the diameter of the positioning guide sleeve 15. A cylindrical rotating sleeve 17 is integrally formed on the top surface of the connecting block 16, and a through hole is formed in the middle of the rotating sleeve 17. A fixed shaft is integrally formed at the middle of the rear end of the receiving cylinder 3, arranged along its axis. The rotating sleeve 17 is rotatably fitted onto the fixed shaft. The rear end of the fixed shaft has a flange to prevent the rotating sleeve 17 from dislodging.

[0061] When it is necessary to rotate the receiving cylinder 3, first flip up the locking block 19 to separate it from the locking groove 81, and then drag the extrusion rod 8 backward until the rear end of the extrusion head 18 contacts the front end of the positioning guide sleeve 15. At this time, the extrusion head 18 is completely separated from the current receiving cavity 37. Then, the receiving cylinder 3 can be rotated clockwise or counterclockwise in the manner described above (counterclockwise rotation is preferred, as this direction of rotation will not cause the extrusion rod 8 to disengage from the locking interface). Since the rotating sleeve 17 is rotatably connected to the fixed shaft, the extrusion rod 8 will not rotate with the receiving cylinder 3 when it is rotated, and it can remain arranged downward.

[0062] The method of using this applicator is as follows:

[0063] Insert the saline solution, ointment tube, and gel tube into the three receiving cavities 37 of the receiving cylinder 3 from the side, ensuring the tube body is fully inserted. Insert the extrusion port at the front end into the U-shaped bayonet 32 ​​at the front end of the receiving cylinder 3. Align the plug hole 22 at the rear end of the guide part 2 with the plug block 31 at the front end of the receiving cylinder 3 and insert it. Simultaneously, fasten the three hooks 24 on the outside of the guide part 2 into the corresponding hook grooves 33 at the front end of the receiving cylinder 3 for secure locking. Push the three limiting members 5 on the fixing ring 4 along the conical surface of the guide part 2 onto the exit surface 36 of the receiving cylinder 3. Then rotate the receiving cylinder 3 to allow the telescopic ends of the limiting members 5 to slide along the shallow groove 34 into the deep groove 35, thus securing them.

[0064] Before switching the receiving cavity 37, the telescopic end of the limiting member 5 on the fixing ring 4 is already engaged in the adjustment groove 35 corresponding to the current receiving cavity 37. During switching, hold the fixing handle 14 with one hand and rotate the receiving cylinder 3 with the other. Apply a certain rotational force to disengage the telescopic end from the deep groove 35 and slide it along the shallow groove 34. Continue to rotate the receiving cylinder 3 so that the telescopic ends of the three limiting members 5 slide into the next shallow groove 34 that is approaching in the same direction, and the telescopic end springs into the deep groove 35 of the shallow groove 34. At this time, the position of the fixing handle 14 is locked at the same time, and the squeezing head 18 is aligned with the rear end of the new tube-shaped drug 6.

[0065] Select the extrusion mode according to the type of drug required:

[0066] Mode 1: Large-volume continuous extrusion (suitable for saline flushing or injection of other liquids)

[0067] Adjust the right-angle ruler 9 to the position as follows: Figure 1 and Figure 5 In the indicated state, the locking interface on the left side of the vertical plate is engaged with the squeezing rod 8. The locking block 19 is swung forward and locked into the corresponding locking groove 81 at the top of the squeezing rod 8. The front end of the guide section 2 is aligned with the target area of ​​the patient's oral mucosa. The movable handle 12 is pinched with one hand and brought closer to the fixed handle 14. The locking block 19 pushes forward against the front end of the locking groove 81. The squeezing rod 8 drives the squeezing head 18 to squeeze the rear end of the tube containing the medication 6. The medication is continuously squeezed out and sprayed through the guide section 2 pipe 21 onto the lesion area of ​​the oral mucosa for cleaning or rinsing.

[0068] Mode 2: Small-volume step extrusion (suitable for spot application of ointments and gels)

[0069] Rotate and adjust the right-angle plate 9 to the desired position. Figure 2 As shown, the card interface on the right side of the vertical plate is engaged with the compression rod 8.

[0070] Swing the locking block 19 backward (relative to the mass extrusion mode) and engage it in the locking groove 81. At this point, the locking block 19 is close to the positioning element. Squeeze the movable handle 12 once, and the extrusion rod 8 advances a short distance, extruding a small amount of medication. When the front end of the locking block 19 contacts the positioning element and is limited, release the handle; the return spring 13 pushes the movable handle 12 back to its original position. During the reset process, the locking block 19 is lifted by the inclined surface of the locking groove 81, thus passing over the current locking groove 81. The extrusion head 18 remains stationary due to friction with the outer wall of the tube. At this time, the medication can be evenly applied using the sponge sleeve 1. Squeeze the movable handle 12 again, repeating the above process until the required amount of medication is completely extruded. Each squeeze produces a fixed amount of medication, achieving step-by-step drug delivery.

[0071] When switching to another receiving cavity 37 for medication, the squeezing rod 8 must first be reset by flipping the locking block 19 upwards to disengage it from the locking groove 81. Then, drag the squeezing rod 8 backwards until the rear end of the squeezing head 18 contacts the front end of the positioning guide sleeve 15. At this point, the squeezing head 18 is completely withdrawn from the current receiving cavity 37. Rotate the receiving cylinder 3 according to the aforementioned method for switching receiving cavities 37 to select the next receiving cavity 37 for medication.

[0072] Depending on the properties of the new drug, the large or small extrusion mode can be reselected, and the treatment operation can continue.

[0073] After treatment, pull the protruding plastic plate hook 24 on the outside of the guide part 2 to separate the rear end of the hook 24 from the groove 33. Remove the guide part 2 forward and place it in the waste disposal area. For the next use, simply install a new guide part 2. Remove the tube-shaped medication 6 from each receiving cavity 37. If any medication is not used up, screw the cap back on for the next use.

[0074] It should be understood that all the above embodiments are exemplary and not restrictive. Various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this application should be within the protection scope of this application.

Claims

1. A cavity-type medicine applicator, characterized in that: Includes a receiving section, a guiding section, and a squeezing section; The receiving part includes a receiving cylinder, the side wall of the receiving cylinder is provided with a plurality of receiving cavities, the front end of the receiving cylinder is provided with a plurality of slots, the slots are connected to the receiving cavities; the front side wall of the receiving cylinder is provided with an adjustment slot. The guide section is detachably connected to the front end of the receiving cylinder. The front end of the guide section is tapered, and its interior has a pipe that matches the number of bayonets. The extrusion section includes a fixed handle, a fixed ring at the top of the fixed handle, the fixed ring being fitted onto the front middle part of the receiving cylinder, and a limiting member on the fixed ring, the limiting member being engaged in an adjusting groove; a movable handle is provided at the rear side of the fixed handle, a guide and reset assembly is provided between the fixed handle and the movable handle, a push assembly is provided at the rear end of the movable handle, an extrusion rod is movably connected to the top end of the push assembly, an extrusion head is provided at the front end of the extrusion rod, a positioning member is fitted onto the extrusion rod, and the top of the positioning member is rotatably connected to the rear end of the receiving cylinder.

2. The applicator according to claim 1, characterized in that: The adjusting slot includes a shallow slot and a deep slot. The shallow slot is opened around the circumference of the receiving cylinder, and the deep slot is located in the middle of the shallow slot. An arc-shaped transition surface is provided at the connection between the shallow slot and the deep slot.

3. The applicator according to claim 1, characterized in that: The front end face of the receiving cylinder is provided with a stopper.

4. The applicator according to claim 3, characterized in that: The rear end face of the guide section has a plug hole that matches the plug.

5. The applicator according to claim 1, characterized in that: The front side of the guide section is provided with a sponge sleeve.

6. The applicator according to claim 2, characterized in that: The limiting component includes a fixed end and a telescopic end. The fixed end is connected to a fixed ring, and the telescopic end is engaged with a deep groove.

7. The applicator according to claim 1, characterized in that: The guide reset assembly includes a guide rod that slidably passes through a movable handle. A reset spring is sleeved on the guide rod, with the front end of the reset spring abutting against the rear end of the fixed handle and the rear end of the reset spring abutting against the front end of the movable handle.

8. The applicator according to claim 1, characterized in that: The propulsion assembly includes a guide plate, and a right-angle plate is hinged to the rear end of the guide plate. The right-angle plate includes a horizontal plate and a vertical plate, with the vertical plate facing upward. The left and right sides of the vertical plate are respectively provided with locking interfaces, and a locking block is hinged to the top.

9. The applicator according to claim 8, characterized in that: The top of the extrusion rod is provided with several snap-fit ​​grooves at equal intervals along its length for snap-fit ​​blocks to snap into.

10. The applicator according to claim 1, characterized in that: The front end of the extrusion head is provided with an extrusion slope.

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