CN213220064U

CN213220064U - Safety injection rubber plug

Info

Publication number: CN213220064U
Application number: CN202021621531.XU
Authority: CN
Inventors: 杨育良; 吴小平
Original assignee: Zhejiang Huanliang Medical Equipment Co ltd
Current assignee: Zhejiang Huanliang Medical Equipment Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-05-18
Anticipated expiration: 2030-08-06

Abstract

The utility model provides a safe injection plug, including the plug body, be provided with in the plug body and place the chamber, opening one has been seted up to the one end of plug body, and opening one communicates in placing the chamber, and opening two has been seted up to the other end of plug body, and opening two communicates in placing the chamber, and opening one's inner wall department is provided with sealing ring one, sealing ring one and plug body integrated into one piece, and opening two's inner wall department is provided with sealing ring two, sealing ring two and plug body integrated into one piece. The sealing ring I is arranged on the inner wall of the opening I and can be tightly abutted to the injection rod to improve the sealing property between the injection rod and the rubber plug body, so that liquid medicine is not easy to flow back from a gap between the injection rod and the rubber plug body, and the waste of the liquid medicine is reduced. Set up sealing ring two in opening two, sealing ring two can support tightly with stifled cover for promote the leakproofness between stifled cover and the plug body, make the liquid medicine difficult follow the clearance between stifled cover and the plug body backward flow, further reduce the waste of liquid medicine.

Description

Safety injection rubber plug

Technical Field

The utility model relates to a spare and accessory part for the syringe, in particular to a safe injection rubber plug.

Background

At present, chinese patent with publication number CN2655925Y discloses a self-destruction injector, which comprises an injection tube and an injection rod installed inside the injection tube, wherein the injection rod is composed of a rod head and a rod body which are connected together, a rubber plug is sleeved on the rod head, a needle head seat is arranged at the front end of the injection tube, a plug is arranged on the needle head seat, the plug is fixedly connected with the injection tube, and a blocking sleeve is arranged on the injection rod, and can be buckled with the plug and is not easy to separate. However, since the rubber plug is penetrated by the injection rod and the plug sleeve, and the rod head and the rubber plug are only tightly sealed, a part of the liquid medicine flows back from the gap between the rod head and the rubber plug in the process of pushing the injection rod, so that the liquid medicine is wasted.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a safe injection plug, it has the difficult backward flow of liquid medicine when using, and the difficult extravagant advantage that appears of liquid medicine.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a safety injection plug, includes the plug body, be provided with in the plug body and place the chamber, opening one has been seted up to the one end of plug body, opening one communicate in place the chamber, opening two has been seted up to the other end of plug body, opening two communicate in place the chamber, opening one's inner wall department is provided with sealing ring one, sealing ring one with plug body integrated into one piece, opening two's inner wall department is provided with sealing ring two, sealing ring two with plug body integrated into one piece.

Through above-mentioned technical scheme, will inject the one end of pole and pass and block into placing the chamber from opening one, so accessible injection pole drive this injection plug in the inside slip of injection tube. The sealing ring I is arranged on the inner wall of the opening I and can be tightly abutted to the injection rod to improve the sealing property between the injection rod and the rubber plug body, so that liquid medicine is not easy to flow back from a gap between the injection rod and the rubber plug body, and the waste of the liquid medicine is reduced. Set up sealing ring two in opening two, sealing ring two can support tightly with stifled cover for promote the leakproofness between stifled cover and the plug body, make the liquid medicine difficult follow the clearance between stifled cover and the plug body backward flow, further reduce the waste of liquid medicine.

Preferably, the opening one includes guiding opening, seal opening and the guide mouth that connects gradually, the guiding opening with place the chamber intercommunication, the guiding opening is to keeping away from place chamber one side throat, sealing ring one sets up the department of seal opening, the guide mouth is to keeping away from place chamber one side flaring.

Through above-mentioned technical scheme, the guide mouth is to keeping away from placing chamber one side flaring, and the guide mouth can guide the injection pole to get into for the installation of injection pole becomes more convenient. The caliber of the sealing port is small, and the sealing port can be tightly abutted against the injection rod. And the first sealing ring is arranged at the sealing port, so that the first sealing ring can be tightly abutted against the injection rod, and the sealing property between the injection rod and the rubber plug body is improved. The guide port is contracted towards one side far away from the placing cavity, and the guide port can guide the injection rod, so that the injection rod is not easy to incline.

Preferably, the second opening comprises a limiting opening and an inserting opening which are sequentially connected, the limiting opening is communicated with the placing cavity, the limiting opening is contracted to the side far away from the placing cavity, and the second sealing ring is arranged at the inserting opening.

Through the technical scheme, the caliber of the insertion opening is small, and the insertion opening can be tightly abutted against the side wall of the injection rod. And the second sealing ring is arranged at the socket, so that the second sealing ring can be tightly abutted against the side wall of the injection rod, and the sealing property between the injection rod and the rubber plug body is improved. The restriction mouth is to keeping away from placing one side throat of chamber, so can restrict stifled cover for stifled cover is difficult from the plug body roll-off.

Preferably, the inner walls of the guide port and the insertion port are provided with expansion membranes, and the expansion membranes are made of water-absorbent resin.

Through above-mentioned technical scheme, when liquid medicine and inflation membrane contact, the inflation membrane can absorb the liquid medicine, so is difficult for skidding between plug body and the injection pole. After the inflation membrane absorbs the liquid medicine, the inflation membrane volume increase further supports tightly with the injection pole for the leakproofness between plug body and the injection pole further promotes, makes the liquid medicine be difficult for entering into in the plug body.

Preferably, the surface of the expansion film is provided with a sawtooth-shaped abutting part, and the abutting part and the expansion film are integrally formed.

Through the technical scheme, the zigzag abutting part can abut against the side wall of the injection rod, so that the rubber plug body and the injection rod are not easy to slide relatively.

Preferably, the placing cavity is internally provided with a plurality of supporting ribs which are uniformly distributed along the circumferential direction of the placing cavity.

Through above-mentioned technical scheme, set up in the structural strength who places intracavity portion's support rib can promote and place intracavity wall, so place the inner wall non-deformable in chamber, and difficult separation between plug body and the injection pole.

Preferably, the end part, close to the first opening, of the supporting rib is connected with an auxiliary rib, and the auxiliary rib is fixed on the inner wall of the guide opening.

Through above-mentioned technical scheme, supplementary rib can promote the structural strength of direction mouthful inner wall for direction mouthful non-deformable, and difficult separation between plug body and the injection pole.

Preferably, the end part, close to the second opening, of the supporting rib is connected with a reinforcing rib, and the reinforcing rib is fixed on the inner wall of the limiting opening.

Through above-mentioned technical scheme, the strengthening rib can promote the structural strength who restricts mouthful inner wall for restriction mouthful non-deformable, and difficult separation between plug body and the stifled cover.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

fig. 2 is a schematic structural diagram of the second embodiment.

Reference numerals: 1. a rubber plug body; 2. a placement chamber; 3. a first opening; 31. a guide port; 32. sealing the opening; 33. a guide port; 4. a second opening; 41. a restriction port; 42. an insertion opening; 5. a first sealing ring; 6. a second sealing ring; 7. an intumescent film; 8. a tightening part; 9. a support rib; 10. auxiliary ribs; 11. reinforcing ribs; 12. and a liquid pushing section.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings, so that the technical solution of the present invention can be more easily understood and grasped.

The first embodiment is as follows:

the utility model provides a safe injection plug, as shown in figure 1, includes plug body 1, and the one end undergauge of plug body 1 forms and pushes away liquid section 12, pushes away liquid section 12 and is used for supporting tightly and fully pushing out the inside liquid medicine of injection tube with the inner wall of injection tube one end to reduce the hydrops.

The center department of plug body 1 has seted up and has placed chamber 2, places the central axis in chamber 2 and the coincidence of the central axis of plug body 1. When in use, the end part of the injection rod is inserted into the placing cavity 2 so as to connect the injection rod with the rubber plug body 1.

The center of the end part of the rubber plug body 1, which is far away from the liquid pushing section 12, is provided with an opening I3, and the opening I3 comprises a guide port 31, a sealing port 32 and a guide port 33 which are sequentially communicated. The guide port 31 is communicated with the placing cavity 2, and the guide port 31 is contracted towards the side far away from the placing cavity 2. Sealing port 32 sets up in one side that the chamber 2 was kept away from to direction mouth 31, and the bore of sealing port 32 is invariable, and the inner wall department of sealing port 32 is provided with sealing ring 5, and sealing ring 5 sets up with sealing port 32 is coaxial and is used for hugging closely the injection pole. The guide port 33 is located on the side of the seal port 32 away from the guide port 31, and the guide port 33 is flared toward the side away from the placing chamber 2.

The center of the liquid pushing section 12 is provided with a second opening 4, and the second opening 4 comprises a limiting port 41 and an inserting port 42 which are communicated in sequence. The limiting port 41 communicates with the placing chamber 2, and the limiting port 41 is narrowed toward the side away from the placing chamber 2. The insertion opening 42 is located on one side of the limiting opening 41 far away from the placing cavity 2, the aperture of the insertion opening 42 is constant, a second sealing ring 6 is arranged on the inner wall of the insertion opening 42, and the second sealing ring 6 is arranged coaxially with the insertion opening 42 and used for tightly holding the blocking sleeve.

Example two:

the second embodiment is different from the first embodiment in that, as shown in fig. 2, the swelling membranes 7 are adhesively fixed to the inner walls of the guide port 31 and the insertion port 42, the swelling membranes 7 are made of a water-absorbent resin, and the water-absorbent resin can absorb the liquid medicine in contact therewith and then swell in volume. The surface of the expansion film 7 is provided with a serrated abutting part 8, and the abutting part 8 and the expansion film 7 are integrally formed.

The inner wall of the placing cavity 2 is provided with a plurality of supporting ribs 9, the supporting ribs 9 are uniformly distributed along the circumferential direction of the placing cavity 2, and the supporting ribs 9 are arranged along the axial direction of the rubber plug body 1. The end part of the supporting rib 9 close to the first opening 3 is provided with an auxiliary rib 10, and the auxiliary rib 10 is fixed on the inner wall of the guide opening 31. And reinforcing ribs 11 are arranged at the end parts of the supporting ribs 9 close to the second opening 4, and the reinforcing ribs 11 are fixed at the inner wall of the limiting opening 41.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims

1. The utility model provides a safety injection plug, includes plug body (1), be provided with in plug body (1) and place chamber (2), opening one (3) have been seted up to the one end of plug body (1), opening one (3) communicate in place chamber (2), opening two (4) have been seted up to the other end of plug body (1), opening two (4) communicate in place chamber (2), characterized by: the inner wall department of opening one (3) is provided with sealing ring one (5), sealing ring one (5) with plug body (1) integrated into one piece, the inner wall department of opening two (4) is provided with sealing ring two (6), sealing ring two (6) with plug body (1) integrated into one piece.

2. The safety injection rubber plug of claim 1, wherein: opening one (3) including the direction mouth (31), sealing port (32) and the guide mouth (33) that connect gradually, direction mouth (31) with place chamber (2) intercommunication, direction mouth (31) are to keeping away from place chamber (2) one side throat, sealing ring one (5) set up sealing port (32) department, guide mouth (33) are to keeping away from place chamber (2) one side flaring.

3. The safety injection rubber plug of claim 2, wherein: opening two (4) including the restriction mouth (41) and inserted hole (42) that connect gradually, restriction mouth (41) with place chamber (2) intercommunication, just restriction mouth (41) are to keeping away from place chamber (2) one side throat, sealing ring two (6) set up inserted hole (42) department.

4. A safety injection rubber plug according to claim 3, wherein: and expansion membranes (7) are arranged on the inner walls of the guide port (31) and the insertion port (42), and the expansion membranes (7) are made of water-absorbent resin.

5. The safety injection rubber plug of claim 4, wherein: the surface of the expansion film (7) is provided with a sawtooth-shaped abutting part (8), and the abutting part (8) and the expansion film (7) are integrally formed.

6. A safety injection rubber plug according to claim 3, wherein: place chamber (2) inside and be provided with a plurality of support ribs (9), a plurality of support ribs (9) are followed place the circumference evenly distributed in chamber (2).

7. The safety injection rubber plug of claim 6, wherein: the end part, close to the first opening (3), of the supporting rib (9) is connected with an auxiliary rib (10), and the auxiliary rib (10) is fixed to the inner wall of the guide opening (31).

8. The safety injection rubber plug of claim 6, wherein: and the end part of the supporting rib (9) close to the second opening (4) is connected with a reinforcing rib (11), and the reinforcing rib (11) is fixed on the inner wall of the limiting opening (41).