Gel administration device

Abstract

The utility model relates to the technical field of dosing devices, and provides a gel dosing device which aims at solving the problems that a push rod of an existing gel dosing device is not easy to control and inconvenient to use, gel flows out due to the fact that the push rod is easily touched by mistake, and waste is caused. The device further comprises a first medicine pushing assembly and a second medicine pushing assembly movably arranged in the inner cavity of the barrel. The locking assembly arranged on the second medicine pushing assembly can fix the position of the second medicine pushing assembly, the situation that gel medicine is pushed out due to accidental touch, and waste is caused can be avoided, and the end, away from the medicine outlet, of the barrel can be sealed. The first medicine pushing assembly comprises a rear cover, a telescopic rod and a motor, during use, the locking assembly is unlocked firstly, then the rear cover is fixedly buckled to the barrel, then the motor is started, the free end of the telescopic rod is driven by the motor to extend, and the telescopic rod can push the second medicine pushing assembly in the inner cavity of the barrel to move towards the medicine outlet; therefore, the gel medicine in the cylinder body can be pushed out to complete medicine administration, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of drug delivery devices, in particular to a gel drug delivery device. Background Art

[0002] A gel delivery device is a medical device used for local drug delivery, typically delivering a gel-based medication directly to the area in need of treatment, minimizing systemic side effects. Gel delivery devices are typically designed for ease of use and are suitable for self-administration, such as vaginal administration of antibacterial gels.

[0003] For example, the patent with publication number CN220757803U provides a gynecological gel drug delivery pusher, including a tapered portion, a straight tube portion and a push rod, a piston is slidably provided in the tapered portion, the utility model removes the cover of the tapered portion, removes the cover of the straight tube portion, places the end of the push rod into the tapered portion, contacts the piston, holds the handle, places the medicine tube portion at an appropriate position in the patient's vagina, pushes the push rod forward, and the piston and the drug delivery rod move forward synchronously, so that the gynecological gel in the straight tube portion is squeezed by the drug delivery rod and discharged outward from the bottom hole of the straight tube portion and contacts the patient's vaginal wall. When the push rod can no longer move forward, the piston and the drug delivery rod are both at the front end of their respective strokes. At this time, the piston is at the front end of the tapered portion, and the front end of the straight tube portion contacts the front inner wall of the drug delivery rod. In this state of the gel drug delivery device, there is almost no residue of gynecological gel in the drug tube, and the entire drug delivery operation is completed by taking out the drug pusher. However, the push rod of the gel delivery device is completely independent. After removing the cap of the conical portion, the end of the push rod needs to be brought into active contact with the upper surface of the piston to push the piston to deliver the drug. However, there are still problems such as the push rod being difficult to control and inconvenient to use, and being easily touched by mistake, causing the gel to flow out and cause waste. There is also the problem that the push rod is easy to fall off during the drug delivery process.

[0004] Therefore, there is an urgent need to provide a gel delivery device that is easy to operate and can avoid waste. Utility Model Content

[0005] The purpose of the present invention is to solve the problems of existing gel delivery devices, such as the push rod being difficult to control, inconvenient to use, and easy to accidentally touch, causing gel to leak out and cause waste. The present application provides a gel delivery device that can achieve the technical effect of easy operation and avoiding waste.

[0006] The utility model is realized through the following technical solutions: a gel drug delivery device, comprising a barrel, an end of which is provided with a drug outlet; further comprising a first drug pushing assembly and a second drug pushing assembly, the second drug pushing assembly being movably arranged in the inner cavity of the barrel, and the second drug pushing assembly being configured with a locking assembly; the first drug pushing assembly comprising a rear cover, a telescopic rod and a motor, the rear cover being detachably connected to an end of the barrel away from the drug outlet, the fixed end of the telescopic rod being detachably connected to the inner top of the rear cover, the motor being detachably connected to the outer top of the rear cover, the through shaft of the motor penetrating into the rear cover from the top of the rear cover, and the through shaft of the motor being detachably connected to the fixed end of the telescopic rod.

[0007] Preferably, the barrel includes a drug storage barrel and an injection barrel, and the drug storage barrel and the injection barrel are both narrowed at one end. The drug outlet is opened at the narrow end of the drug storage barrel, and the narrow end of the injection barrel is connected to the end of the drug storage barrel away from the drug outlet.

[0008] Preferably, the second medicine pushing assembly includes a piston and a push rod, the piston is movably mounted in the inner cavity of the injection cylinder, the push rod is fixedly arranged in the middle of the piston near the tail end, and the push rod can be extended into the medicine storage cylinder; the free end of the telescopic rod faces the push rod, and the telescopic rod is used to push the push rod and the piston.

[0009] Preferably, the push rod includes a rod body and a rubber head, the rod body is provided with a long slot along one end thereof, and one end of the rubber head is detachably connected to the end of the rod body provided with the long slot.

[0010] Preferably, the outer diameter of the rod body is equal to the inner diameter of the drug storage cartridge, and the shape and size of the rubber head are the same as those of the narrow end of the drug storage cartridge.

[0011] Preferably, one end of the rod body away from the medicine storage cylinder extends vertically to the outside of the injection cylinder, and the portion of the rod body extending outside the injection cylinder is accommodated in the inner cavity of the rear cover.

[0012] Preferably, the locking assembly includes a pair of protrusions and a pair of rotating sealing plates, the pair of protrusions are respectively arranged on both sides of the rod body, the pair of protrusions are detachably connected to the end of the injection cylinder away from the medicine storage cylinder, the pair of rotating sealing plates are respectively rotatably connected to the two side walls of the rod body, the pair of rotating sealing plates are each provided with a buckle at the end away from the rod body, and the pair of buckles are respectively buckled with the protrusions; the bottom of the rotating sealing plate is flush with the end of the injection cylinder away from the medicine storage cylinder, and the rotating sealing plate can seal the end of the injection cylinder.

[0013] Preferably, it is characterized in that the back cover is further provided with a pair of handles, the pair of handles are respectively arranged on both sides of the back cover, and one end of the pair of handles are detachably connected to the outer wall surface of the back cover.

[0014] Preferably, the rear cover is screwed to an end of the injection cylinder away from the medicine storage cylinder.

[0015] Preferably, the drug storage cartridge further comprises a protective cap, which is detachably connected to the narrow end of the drug storage cartridge.

[0016] The technical solution of the utility model has the following beneficial effects:

[0017] (1) The position of the second medicine pushing component can be fixed by a locking assembly comprising a rotating sealing plate with a buckle and a protrusion, thereby preventing the second medicine pushing component from accidentally touching the second medicine pushing component and pushing out the gel medicine in the cylinder, thereby avoiding waste. At the same time, the second locking assembly can also seal the end of the cylinder away from the medicine outlet. When in use, first unlock the locking assembly, then fix the back cover of the first medicine pushing component to the cylinder, and then start the motor. The motor drives the free end of the telescopic rod to extend, which can push the second medicine pushing component in the cylinder cavity. The second medicine pushing component can push out the gel medicine in the cylinder while moving in the direction of the medicine outlet in the cylinder cavity, thereby completing the gel administration. It is convenient to use. After administration, the back cover can be removed, and the back cover and the motor and telescopic rod on the back cover can be stored separately and reused.

[0018] (2) The telescopic rod is used to push the push rod and piston of the second drug pushing assembly. When the piston is pushed to the narrow end of the injection cylinder, the push rod can move to the drug outlet, thereby completely pushing out the gel drug. The hollow interior of the push rod can reduce the weight of the push rod, and it can be easily pushed without a large thrust. The outer diameter of the rod body is consistent with the inner diameter of the drug storage cylinder, and the shape and size of the rubber head are consistent with the shape and size of the narrow end of the drug storage cylinder. The rubber head has a certain degree of elasticity and can undergo a certain deformation to squeeze out the drug outlet, thereby completely squeezing out the gel drug to avoid waste.

[0019] (3) The end of the rod body away from the drug storage cartridge extends vertically to the outside of the injection cartridge, and the portion of the rod body extending outside the injection cartridge is accommodated in the inner cavity of the rear cover. When the rear cover is closed and the motor is not started, the rod body will not be accidentally touched, causing gel waste.

[0020] (4) A pair of handles on the back cover make it easy to hold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 Schematic diagram of the cross-sectional structure of the gel drug delivery device in Example 1 (without the first propulsion assembly installed, including the protective cap);

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the partially enlarged part of the middle A;

[0024] Figure 3 Schematic diagram of the cross-sectional structure of the gel delivery device in Example 1 (with the first propulsion assembly installed and without the protective cap);

[0025] Figure 4 for Figure 3 Schematic diagram of the structure of the partially enlarged part B in the middle.

[0026] Figure markings: 1-cylinder, 11-drug storage cylinder, 12-injection cylinder, 1a-drug outlet, 2-first drug pushing assembly, 21-back cover, 22-telescopic rod, 23-motor, 3-second drug pushing assembly, 31-piston, 32-push rod, 321-rod body, 321a-long slot, 322-rubber head, 4-locking assembly, 41-bump, 42-rotating sealing plate, 421-buckle, 5-handle, 6-protective cap. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] Example 1

[0031] like Figures 1 to 4 As shown, this embodiment provides a gel drug delivery device, comprising a barrel 1 having a drug outlet 1a defined at one end thereof; a first drug pushing assembly 2; and a second drug pushing assembly 3 movably disposed within the inner cavity of the barrel 1. The second drug pushing assembly 3 is equipped with a locking assembly 4. The first drug pushing assembly 2 comprises a rear cover 21, a telescopic rod 22, and a motor 23. The rear cover 21 is fastened to the end of the barrel 1 away from the drug outlet 1a. The fixed end of the telescopic rod 22 is welded to the inner top of the rear cover 21. The motor 23 is detachably connected to the outer top of the rear cover 21. The through shaft of the motor 23 extends from the top of the rear cover 21 into the rear cover 21 and is axially connected to the fixed end of the telescopic rod 22.

[0032] The position of the second medicine-pushing assembly 3 can be fixed by the locking assembly 4, so as to avoid accidentally touching the second medicine-pushing assembly 3 and pushing out the gel medicine in the barrel 1, thereby avoiding waste. Meanwhile, the second locking assembly 4 can also seal the barrel 1 away from one end of the medicine outlet 1a. During use, the locking assembly 4 is first unlocked, and the back cover 21 in the first medicine-pushing assembly 2 is fixedly fastened to the barrel 1. Then, the motor 23 is started, and the free end of the telescopic rod 22 is extended by the motor 23, so that the telescopic rod 22 can push the second medicine-pushing assembly 3 in the inner cavity of the barrel 1. The second medicine-pushing assembly 3 can push out the gel medicine in the barrel 1 while the inner cavity of the barrel 1 moves toward the medicine outlet 1a, thereby completing the gel administration and being easy to use. After administration, the back cover 21 can be removed, and the motor 23 and the telescopic rod 22 on the back cover 21 can be separately stored and reused. The motor 23 can be a small telescopic motor 23 with its own power supply commonly used on the market.

[0033] In this embodiment, the barrel 1 comprises a drug storage barrel 11 and an injection barrel 12. Both barrels 11 and 12 are narrowed at one end. The drug outlet 1a is located at the narrow end of the barrel 11, and the narrow end of the injection barrel 12 is connected to the end of the barrel 11 away from the drug outlet 1a. The barrel 1 is generally placed vertically. The drug storage barrel 11 and injection barrel 12 can be integrally formed, with spatial separation between them. This prevents the second drug-expelling assembly 3 from long-term contact with the gel drug, effectively ensuring drug quality.

[0034] In this embodiment, the second drug-dispensing assembly 3 comprises a piston 31 movably mounted within the inner cavity of the injection barrel 12, and a push rod 32. The push rod 32 is fixedly positioned near the rear end of the piston 31 and extends into the drug storage barrel 11. The free end of a telescopic rod 22 faces the push rod 32, and the telescopic rod 22 is used to push the push rod 32 and the piston 31. The central axis of the telescopic rod 22 substantially coincides with the central axis of the push rod 32. When the motor 23 is activated, the telescopic rod 22 extends, easily and steadily pushing the push rod 32 and the piston 31 toward the drug outlet 1a. The push rod 32 is of an appropriate length, and the ends of the piston 31 tightly fit the inner sidewalls of the injection barrel 12. When the piston 31 is pushed to the narrow end of the injection barrel 12, the push rod 32 moves to the drug outlet 1a, thereby completely dispensing the gel drug. The piston 31 is made of an elastic material, and its diameter is slightly larger than the inner diameter of the barrel 1, ensuring a good seal during application.

[0035] In this embodiment, the push rod 32 includes a rod body 321 and a rubber head 322. The rod body 321 has an elongated slot 321a along one end, and one end of the rubber head 322 is bonded to the end of the rod body 321 having the elongated slot 321a. The rod body 321 of the push rod 32 is hollow, which reduces its weight and allows for easy movement without requiring significant force.

[0036] In this embodiment, the outer diameter of the rod 321 is equal to the inner diameter of the drug storage cartridge 11, and the shape and size of the rubber head 322 are identical to those of the narrow end of the drug storage cartridge 11. Furthermore, the rubber head 322 has a certain degree of elasticity and can deform to squeeze out of the drug opening 1a, thereby completely squeezing out the gel drug and avoiding waste.

[0037] In this embodiment, the end of the rod 321 away from the drug storage cylinder 11 extends vertically to the outside of the injection cylinder 12, and the portion of the rod 321 extending outside the injection cylinder 12 is accommodated in the inner cavity of the rear cover 21. When the rear cover 21 is closed and the motor 23 is not started, the rod 321 will not be accidentally touched, causing gel waste.

[0038] In this embodiment, the locking assembly 4 includes a pair of protrusions 41 and a pair of rotating sealing plates 42. The protrusions 41 are respectively disposed on either side of the rod 321. The protrusions 41 are bonded to the end of the injection barrel 12 facing away from the drug storage cartridge 11. The rod 321 is hingedly connected to the rotating sealing plates 42. The rotating sealing plates 42 are rotatably connected to the side walls of the rod 321. The ends of the rotating sealing plates 42 facing away from the rod 321 are each provided with a retaining ring 421. The retaining rings 421 respectively engage with the pair of protrusions 41, thereby locking the position of the rod 321 and preventing accidental contact. The bottom of the rotating sealing plates 42 is flush with the end of the injection barrel 12 facing away from the drug storage cartridge 11. When the retaining rings 421 of the rotating sealing plates 42 engage with the protrusions 41, the end of the injection barrel 12 is sealed. Before installing the rear cover 21, the sealing plates 42 are rotated to separate the retaining rings 421 from the protrusions 41.

[0039] In this embodiment, the rear cover 21 is further provided with a pair of handles 5 disposed on both sides of the rear cover 21, and one end of the pair of handles 5 is bonded to the outer wall surface of the rear cover 21. The pair of handles 5 can be conveniently held when administering the drug.

[0040] In this embodiment, the rear cover 21 is provided with a first internal thread (not shown), and the end of the injection cylinder 12 away from the medicine storage cylinder 11 is provided with a first external thread (not shown). The first internal thread and the first external thread are adapted to enable the rear cover 21 to be tightly fastened to the injection cylinder 12 to avoid accidental falling off.

[0041] This embodiment also includes a protective cap 6, which is threadedly connected to the narrow end of the drug storage cartridge 11. The protective cap 6 is provided with a second internal thread (not shown), and the narrow end of the drug storage cartridge 11 is provided with a second external thread (not shown). The second internal thread and the second external thread are adapted to allow the protective cap 6 to tightly fit the narrow end of the drug storage cartridge 11, thereby effectively sealing the drug outlet 1a and preventing accidental disengagement. During use, after installing the rear cover 21, the protective cap 6 is removed to release the gel drug.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A gel drug delivery device, characterized in that: It comprises a cylinder (1), wherein the end of the cylinder (1) is provided with a medicine outlet (1a); It also includes a first medicine pushing component (2) and a second medicine pushing component (3), wherein the second medicine pushing component (3) is movably arranged in the inner cavity of the cylinder (1), and the second medicine pushing component (3) is equipped with a locking component (4); The first medicine pushing component (2) includes a rear cover (21), a telescopic rod (22) and a motor (23); the rear cover (21) is detachably connected to the end of the barrel (1) away from the medicine outlet (1a); the fixed end of the telescopic rod (22) is detachably connected to the inner top of the rear cover (21); the motor (23) is detachably connected to the outer top of the rear cover (21); the through shaft of the motor (23) penetrates into the rear cover (21) from the top of the rear cover (21), and the through shaft of the motor (23) is detachably connected to the fixed end of the telescopic rod (22).

2. A gel drug delivery device according to claim 1, characterized in that: The barrel (1) comprises a drug storage barrel (11) and an injection barrel (12), wherein the drug storage barrel (11) and the injection barrel (12) are both narrowed at one end, the drug outlet (1a) is opened at the narrow end of the drug storage barrel (11), and the narrow end of the injection barrel (12) is communicated with an end of the drug storage barrel (11) away from the drug outlet (1a).

3. A gel drug delivery device according to claim 2, characterized in that: The second medicine pushing assembly (3) comprises a piston (31) and a push rod (32), wherein the piston (31) is movably mounted in the inner cavity of the injection cylinder (12), and the push rod (32) is fixedly mounted in the middle of the piston (31) near the tail end, and the push rod (32) can be extended into the medicine storage cylinder (11); The free end of the telescopic rod (22) faces the push rod (32), and the telescopic rod (22) is used to push the push rod (32) and the piston (31).

4. A gel drug delivery device according to claim 3, characterized in that: The push rod (32) comprises a rod body (321) and a rubber head (322); a long slot (321a) is provided along one end of the rod body (321); one end of the rubber head (322) is detachably connected to the end of the rod body (321) where the long slot (321a) is provided.

5. A gel drug delivery device according to claim 4, characterized in that: The outer diameter of the rod body (321) is equal to the inner diameter of the drug storage cartridge (11), and the shape and size of the rubber head (322) are the same as those of the narrow end of the drug storage cartridge (11).

6. A gel drug delivery device according to claim 4, characterized in that: One end of the rod body (321) away from the medicine storage cylinder (11) extends vertically to the outside of the injection cylinder (12), and the portion of the rod body (321) extending outside the injection cylinder (12) is accommodated in the inner cavity of the rear cover (21).

7. A gel drug delivery device according to claim 6, characterized in that: The locking assembly (4) comprises a pair of protrusions (41) and a pair of rotating sealing sheets (42), wherein the pair of protrusions (41) are respectively arranged on both sides of the rod body (321), and the pair of protrusions (41) are detachably connected to one end of the injection cylinder (12) away from the medicine storage cylinder (11), and the pair of rotating sealing sheets (42) are respectively rotatably connected to the two side walls of the rod body (321), and the ends of the pair of rotating sealing sheets (42) away from the rod body (321) are provided with buckles (421), and the pair of buckles (421) are respectively buckled with the protrusions (41); The bottom of the rotating sealing plate (42) is flush with the end of the injection cylinder (12) away from the medicine storage cylinder (11), and the rotating sealing plate (42) can seal the end of the injection cylinder (12).

8. A gel drug delivery device according to any one of claims 1 to 7, characterized in that: The rear cover (21) is further provided with a pair of handles (5), which are respectively arranged on both sides of the rear cover (21), and one end of the pair of handles (5) is detachably connected to the outer wall surface of the rear cover (21).

9. The gel drug delivery device according to claim 2, characterized in that: The rear cover (21) is screwed to one end of the injection cylinder (12) away from the medicine storage cylinder (11).

10. The gel drug delivery device according to claim 2, characterized in that: It also comprises a protective cap (6), which is detachably connected to the narrow end of the drug storage cartridge (11).

Images