CN218923449U

CN218923449U - Isoprene rubber plug for injector

Info

Publication number: CN218923449U
Application number: CN202221957090.XU
Authority: CN
Inventors: 陆俊沛
Original assignee: Changzhou Huawei Medical Supplies Co ltd
Current assignee: Changzhou Huawei Medical Supplies Co ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-04-28
Anticipated expiration: 2032-07-27

Abstract

The utility model relates to the technical field of syringes, in particular to an isoprene rubber plug for a syringe, wherein a plug body comprises an upper plug and a lower plug positioned at the lower end of the upper plug, a hollow groove is arranged between the upper plug and the lower plug, a plurality of buffer grooves are formed in the upper end of the lower plug, a second spring is arranged in the buffer grooves, the bottom end of the second spring is fixed at the bottom of the buffer grooves, a plurality of buffer rods positioned in the buffer grooves are arranged at the lower end of the upper plug, the lower end of the buffer rods is connected with the upper end of the second spring, an air bag ring positioned at the periphery of the buffer rods is arranged in the hollow groove, and the air bag ring is arranged, so that on one hand, the tightness between the plug body and a tube body can be improved, and on the other hand, a resistance can be provided between the plug body and the tube body, thereby preventing discomfort of a user being injected due to too fast injection of liquid medicine and improving the practicality of the structure.

Description

Isoprene rubber plug for injector

Technical Field

The utility model relates to the technical field of syringes, in particular to an isoprene rubber plug for a syringe.

Background

As is well known, an injector is a common medical appliance and is mainly used for injecting liquid medicine or drawing liquid, and mainly comprises a needle, an injector tube, a piston and a push-pull rod, when the injector is used, the needle is inserted into the liquid medicine, the push-pull rod is pulled to drive the piston to move so that the liquid medicine enters the injector tube, and then conventional injection is carried out, so that the piston is a key component affecting the quality of an injector product;

in order to ensure that the common injector has better tightness and is slightly pushed and pulled during use, the piston is required to have double requirements, namely, the piston and the inner side of the injector tube are required to have good tightness, and meanwhile, the resistance of the piston and the injector tube is required to be reduced;

the existing syringe stopper has no buffering effect, when the stopper moves to the bottom of the syringe, medical staff can easily transmit pressure to the syringe if continuing to exert force, so that discomfort of a patient can be caused, and when a piston is pushed, an auxiliary damping device is not arranged, so that liquid medicine is injected too quickly during injection, and discomfort of an injected person is caused.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides an isoprene rubber plug for an injector.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an isoprene rubber plug for syringe, includes the push rod and is located the chock plug body of push rod lower extreme, the chock plug body includes the chock plug and is located the chock plug lower extreme down, be equipped with the empty slot between chock plug and the chock plug down, the upper end of chock plug is equipped with a plurality of dashpots, the inside in dashpot is equipped with the second spring, the bottom of second spring is fixed in the bottom in dashpot, the lower extreme of last chock plug is equipped with a plurality of buffer bars that are located the inside in dashpot, the upper end of second spring is connected to the lower extreme of buffer bar, the inside in empty slot is equipped with the gasbag ring that is located the buffer bar periphery, the upper end of last chock plug is equipped with a plurality of guide slots, the top of going up the chock plug is equipped with the clamp plate of connecting the push rod bottom, the lower extreme of clamp plate is equipped with a plurality of guide bars that insert the guide slot inside, be equipped with first spring between clamp plate and the last chock plug, the elastic resistance of first spring is greater than the elastic resistance of second spring.

In order to improve the practicability of the plug body, the utility model is improved in that both the upper plug and the lower plug are made of isoprene.

In order to make the structure lighter in use, the improvement of the utility model is that the upper plug head, the guide rod and the buffer rod are all made of plastic materials.

In order to improve the sealing effect of the air bag ring, the improvement of the utility model is that the outer wall of the air bag ring is made of silica gel.

In order to facilitate the disassembly of the air bag ring, the utility model is improved in that the two ends of the air bag ring are provided with fixing plates which are adhered to the inner wall of the empty groove.

In order to improve the sealing effect of the air bag ring, the improvement of the utility model is that the inner wall of the air bag ring is provided with a groove.

(III) beneficial effects

Compared with the prior art, the utility model provides the isoprene rubber plug for the injector, which has the following beneficial effects:

according to the isoprene rubber plug for the injector, the tightness between the plug body and the pipe body can be improved through the air bag ring, and the plug body and the pipe body can be provided with resistance conveniently, so that the problem that an injected person is uncomfortable due to too fast injection of liquid medicine when the medicine is injected is prevented, and the practicability of the structure is improved;

when the plug body contacts the bottom end of the syringe, if pressure is continuously applied to the push rod, the pressing plate can compress the first spring, when the first spring is compressed, the guide rod can descend in the guide groove, and the plug body can provide a buffer effect for the plug body when moving to the bottom of the syringe through the first spring, so that the practicality of the structure is further improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a front view of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic view illustrating the cooperation of the upper plug and the lower plug of FIG. 1 according to the present utility model;

in the figure: 1. a plug is arranged on the upper plug; 2. a lower plug head; 3. a pressing plate; 4. a push rod; 5. a hollow groove; 6. an air bag ring; 7. a guide rod; 8. a first spring; 9. a guide groove; 10. a fixing plate; 11. a buffer rod; 12. a buffer tank; 13. a second spring; 14. a groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the isoprene rubber plug for the injector of the present utility model comprises a push rod 4 and a plug body positioned at the lower end of the push rod 4, wherein the plug body comprises an upper plug 1 and a lower plug 2 positioned at the lower end of the upper plug 1, a hollow groove 5 is arranged between the upper plug 1 and the lower plug 2, a plurality of buffer grooves 12 are arranged at the upper end of the lower plug 2, a second spring 13 is arranged in the buffer grooves 12, the bottom end of the second spring 13 is fixed at the bottom of the buffer grooves 12, a plurality of buffer rods 11 positioned in the buffer grooves 12 are arranged at the lower end of the upper plug 1, the lower end of the buffer rods 11 is connected with the upper end of the second spring 13, an air bag ring 6 positioned at the periphery of the buffer rods 11 is arranged in the hollow groove 5, a plurality of guide grooves 9 are arranged at the upper end of the upper plug 1, a pressing plate 3 connected with the bottom end of the push rod 4 is arranged above the upper plug 1, the lower end of the pressing plate 3 is provided with a plurality of guide rods 7 inserted into the guide grooves 9, a first spring 8 is arranged between the pressing plate 3 and the upper plug 1, the elastic resistance of the first spring 8 is larger than the elastic resistance of a second spring 13, when the plug body is pressed down, the elastic resistance of the second spring 13 is smaller than the friction resistance between the lower plug 2 and the inner wall of the pipe body, so that firstly, the buffer rod 11 compresses the second spring 13 in the buffer groove 12, the upper plug 1 compresses the air bag ring 6, when the air bag ring 6 is pressed down, the air bag ring 6 is extruded to the outer side of the hollow groove 5 in the hollow groove 5, at the moment, the outer wall of the air bag ring 6 is abutted against the inner wall of the pipe body, the pressure is further increased, when the force overcomes the friction resistance between the lower plug 2 and the inner wall of the pipe body and the friction resistance between the outer wall of the air bag ring 6 and the inner wall of the pipe body, the integral body of the plug body is lowered in the pipe body, the air bag ring 6 is arranged, so that the tightness between the plug body and the pipe body can be improved, and the plug body and the pipe body can be provided with resistance conveniently, so that the problem that the liquid medicine is injected too fast to cause discomfort of an injected person when the medicine is injected is prevented, and the practicability of the structure is improved;

when the plug body contacts the bottom end of the syringe, if pressure is continuously applied to the push rod 4, the pressing plate 3 can compress the first spring 8, when the first spring 8 is compressed, the guide rod 7 can be lowered in the guide groove 9, and the plug body can provide a buffer effect for the plug body when moving to the bottom of the syringe through the first spring 8, so that the practicability of the structure is further improved.

The plug body must guarantee sufficient leakproofness when using, go up plug 1 and lower plug 2 and be the isoprene material, compare with natural rubber, the characteristics of isoprene rubber are the quality homogeneity, and purity is high, and sealed effectual has improved the practicality of plug body.

If the whole weight of this structure is too high, can make this structure inconvenient when carrying, in order to make this structure lighter when using, go up chock plug 1, guide bar 7 and buffer rod 11 and be the plastics material, hard plastics's hardness is high, and the material is light.

In order to improve the sealing effect of the air bag ring 6, the outer wall of the air bag ring 6 is made of silica gel, and the safe and environment-friendly silicon rubber material has the advantages of unique physiological inertia, no toxicity, no smell, good fresh-keeping effect and good sealing property, can well isolate the external environment from interference, and does not turn yellow or fade after long-term use.

When this structure runs into the defective goods in the production process, need dismantle gasbag ring 6 in the inside of empty tank 5, the both ends of gasbag ring 6 are equipped with fixed plate 10, fixed plate 10 bonds on the inner wall of empty tank 5, sprays the sol liquid to the inside of empty tank 5, then just can make gasbag ring 6 split in the inside of empty tank 5, simple structure, convenient operation.

When the air bag ring 6 is compressed, the outer wall of the air bag ring 6 is required to be ensured to bulge towards the outer side of the empty groove 5, the inner wall of the air bag ring 6 is provided with a groove 14, and when the air bag ring 6 is compressed, the air bag ring 6 is enabled to bulge towards the outer side of the empty groove 5 through the action of the groove 14, so that the sealing effect of the air bag ring 6 is improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Isoprene plug for syringe, including push rod (4) and be located the chock plug body of push rod (4) lower extreme, its characterized in that: the plug body includes plug (1) and is located plug (2) down of plug (1) lower extreme, be equipped with empty slot (5) between plug (1) and plug (2) down, the upper end of plug (2) is equipped with a plurality of dashpot (12) down, the inside of dashpot (12) is equipped with second spring (13), the bottom mounting of second spring (13) is in the bottom of dashpot (12), the lower extreme of plug (1) is equipped with a plurality of buffer bars (11) that are located inside dashpot (12), the upper end of second spring (13) is connected to the lower extreme of buffer bar (11), the inside of empty slot (5) is equipped with gasbag ring (6) that are located buffer bar (11) week side, the upper end of plug (1) is equipped with a plurality of guide slots (9), the top of last plug (1) is equipped with clamp plate (3) of connecting push rod (4), the lower extreme of clamp plate (3) is equipped with a plurality of inserts guide slots (9) inside buffer bar (11), the upper spring (8) is equipped with between spring (8) and second spring (8).

2. The isoprene rubber stopper for a syringe according to claim 1, wherein: the upper plug head (1) and the lower plug head (2) are made of isoprene.

3. The isoprene rubber stopper for a syringe according to claim 2, wherein: the upper plug head (1), the guide rod (7) and the buffer rod (11) are all made of plastic materials.

4. The isoprene rubber stopper for a syringe according to claim 3, wherein: the outer wall of the air bag ring (6) is made of silica gel.

5. The isoprene rubber stopper for a syringe according to claim 4, wherein: the two ends of the air bag ring (6) are provided with fixing plates (10), and the fixing plates (10) are adhered to the inner wall of the empty groove (5).

6. The isoprene rubber stopper for a syringe according to claim 5, wherein: the inner wall of the air bag ring (6) is provided with a groove (14).