CN219743562U - Injector cap - Google Patents

Abstract

The utility model discloses a syringe cap, which comprises a base part, an insertion limiting part, a connecting part, a transition part and a sealing column; the top of the base is provided with an insertion limiting part, the top of the insertion limiting part is provided with a connecting part, the top of the connecting part is provided with a transition part, a sealing column is arranged in the connecting part, the bottom end of the sealing column is connected with the top wall of the base, and the top end of the sealing column extends upwards to penetrate through the connecting part and the transition part respectively. According to the utility model, by arranging the base part, the insertion limiting part, the connecting part, the transition part, the groove, the sealing column and other parts, a good sealing effect on the injector can be realized, and the qualification rate of products is improved in the production process.

Description

Injector cap

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a syringe cap.

Background

The existing caps for the syringes have a plurality of products with different structures on the market, but after the syringes are filled, the injection caps are installed through automatic equipment, and the problems of poor sealing, bubble generation in the syringes and the like exist, so that the qualification rate of the final products is affected.

Disclosure of Invention

The present utility model aims to solve the drawbacks of the prior art and proposes a syringe cap.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a syringe cap is detachable from a syringe body having a body portion in which a medicine can be accommodated, a nozzle portion protruding from a distal end portion of the body portion in a distal end direction and having a medicine outlet at a distal end, and a locking joint outside the nozzle portion, the syringe cap including a base portion, an insertion restriction portion, a connection portion, a transition portion, and a seal post; the utility model discloses a sealing structure of a nozzle, including basal portion, connecting portion, sealing post, connecting portion top is equipped with the restriction portion that inserts, restriction portion that inserts is the annular cylinder structure, restriction portion that inserts is equipped with at basal portion top, the connecting portion top is equipped with the transition portion, connecting portion and transition portion all with the barrel structure that the basal portion set up with one heart, the outer peripheral face of connecting portion is formed with the external screw thread portion that can screw with the internal screw thread portion of locking joint, be equipped with the sealing post in the connecting portion, the sealing post bottom with the roof of basal portion is connected, and the top upwards extends and passes respectively connecting portion and transition portion, the sealing post is the cylindricality structure, the top of sealing post is cone structure, the sealing post is used for inserting in the inner chamber of nozzle.

Further, the base is a hollow cylinder with an opening at the bottom.

Further, the anti-slip device further comprises anti-slip parts which are arranged on the circumference of the outer surface of the base part at equal intervals along the axial direction, and the number of the anti-slip parts is a plurality.

Further, the anti-skid part is of a convex structure or a concave cavity structure.

The anti-slip part is matched with the base part, can be conveniently held and rotated, and is used for installing and detaching the syringe cap.

Further, the top end of the sealing column is of a hemispherical structure.

The sealing post is used for sealing the inner cavity channel by contacting with the inner cavity of the nozzle part of the injector.

Further, the outer diameter of the sealing post is 0.03-0.05 mm larger than the inner diameter of the nozzle part, and the sealing post and the nozzle part form interference fit.

Further, the sealing post is 1.2-1.5 mm higher than the transition portion.

The sealing post is 1.5mm higher than the transition portion, and when mounted with the syringe, the sealing post preferentially contacts the syringe nozzle portion, thereby sealing and venting.

Further, the length dimension of the transition part is 1-2 mm.

The transition part is positioned at the front end of the external thread part, has the length of 2mm and performs buffer transition when the syringe cap and the syringe are installed.

Further, a groove is formed in the inner wall of the top of the transition part.

Because the top of the syringe body is not necessarily of a planar structure, radians can exist, and the groove can be formed, so that the syringe cap can be better attached to the syringe.

The transition part is contacted with the internal thread part of the locking joint at the outer side of the nozzle part of the syringe to carry out transition guiding treatment, and the external thread part is matched with the internal thread part of the locking joint of the syringe to be used for fixing the syringe cap and the syringe.

The utility model has the following beneficial effects: according to the utility model, by arranging the base part, the insertion limiting part, the connecting part, the transition part, the groove, the sealing column and other parts, a good sealing effect on the injector can be realized, and the qualification rate of products is improved in the production process.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of a portion of a syringe according to the present utility model;

fig. 4 is a schematic view showing the structure of the syringe and cap of the present utility model.

Legend description:

1. a base; 2. an insertion restriction portion; 3. a connection part; 4. a transition section; 5. a sealing column; 6. an external thread portion; 7. an anti-slip part; 8. a groove; 9. a syringe body; 10. a nozzle portion; 11. locking the joint; 12. an internal thread portion.

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. 1-4, one embodiment provided by the present utility model is: a syringe cap which is detachable from a syringe main body 9, wherein the syringe main body 9 has a body part capable of containing a medicament therein, a nozzle part 10 protruding from a tip end part of the body part toward a tip end direction and having a medicament discharge port at the tip end, and a locking joint 11 outside the nozzle part 10, and comprises a base part 1, an insertion limiting part 2, a connecting part 3, a transition part 4, and a seal post 5; the utility model discloses a sealing structure of a jet-propelled nozzle, including base 1, connecting portion, sealing post 5, connecting portion 3, connecting portion 5 and sealing post 5 are equipped with the restriction portion 2 of inserting on the top of base 1, restriction portion 2 of inserting is the annular cylinder structure, restriction portion 2 of inserting is equipped with connecting portion 3 on the top of inserting, connecting portion 3 top is equipped with transition portion 4, connecting portion 3 and transition portion 4 all with the barrel structure that base 1 set up with one heart, the outer peripheral face of connecting portion 3 is formed with the external screw thread portion 6 that can with the internal screw thread portion 12 spiro union of locking joint 11, be equipped with sealing post 5 in connecting portion 3, sealing post 5 bottom with the roof of base 1 is connected, and the top upwards extends respectively passes connecting portion 3 and transition portion 4, sealing post 5 is the cylindricality structure, sealing post 5's top is the cone structure, sealing post 5 is arranged in inserting the inner chamber of nozzle 10.

Specifically, the base 1 is a hollow cylinder with an opening at the bottom.

Specifically, the present utility model further includes a plurality of anti-slip portions 7, wherein the anti-slip portions 7 are provided at equal intervals in the axial direction in the circumferential direction of the outer surface of the base 1, and the number of the anti-slip portions 7 is plural.

Specifically, the anti-slip part 7 is a convex structure or a concave cavity structure.

Specifically, the top end of the sealing post 5 has a hemispherical structure.

Specifically, the outer diameter of the seal post 5 is 0.03 to 0.05mm larger than the inner diameter of the nozzle 10, and is in interference fit with the nozzle 10.

Specifically, the seal column 5 is 1.2 to 1.5mm higher than the transition portion 4.

Specifically, the length of the transition portion 4 is 1 to 2mm.

Specifically, a groove 8 is formed in the top inner wall of the transition portion 4.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (9)

1. A syringe cap which is detachable from a syringe main body (9), the syringe main body (9) having a body portion in which a medicine can be accommodated, a nozzle portion (10) protruding from a distal end portion of the body portion in a distal end direction and having a medicine outlet at a distal end, and a locking joint (11) outside the nozzle portion (10), characterized in that: comprises a base (1), an insertion limiting part (2), a connecting part (3), a transition part (4) and a sealing column (5); the utility model discloses a sealing device for a gas turbine, including base (1), connecting portion (3), sealing post (5), connecting portion (4), connecting portion (3) top is equipped with inserts restriction portion (2), restriction portion (2) is inserted in base (1) top, restriction portion (2) is inserted in insertion, restriction portion (2) top is the annular cylinder structure, restriction portion (3) is equipped with, connection portion (3) top is equipped with connecting portion (3), transition portion (4) are equipped with on top of connecting portion (3), connecting portion (3) and transition portion (4) all with the barrel structure of base (1) concentric setting, the outer peripheral face of connecting portion (3) is formed with external screw thread portion (6) that can with the internal screw thread portion (12) spiro union of locking joint (11), be equipped with sealing post (5) in connecting portion (3), sealing post (5) bottom with the roof of base (1) is connected, and the top upwards extends respectively passes connecting portion (3) and transition portion (4), sealing post (5) are cylindrical cone structure.

2. The syringe cap of claim 1, wherein: the base (1) is a hollow cylinder with an opening at the bottom.

3. The syringe cap of claim 1 or 2, wherein: the anti-skid device further comprises anti-skid parts (7), wherein the anti-skid parts (7) are arranged on the circumference of the outer surface of the base part (1) at equal intervals along the axial direction, and the number of the anti-skid parts (7) is multiple.

4. A syringe cap according to claim 3, wherein: the anti-skid part (7) is of a convex structure or a concave cavity structure.

5. The syringe cap of claim 1, wherein: the top end of the sealing column (5) is of a hemispherical structure.

6. The syringe cap of claim 1, wherein: the outer diameter of the sealing post (5) is 0.03-0.05 mm larger than the inner diameter of the nozzle part (10), and the sealing post and the nozzle part (10) form interference fit.

7. The syringe cap of claim 1, wherein: the sealing column (5) is 1.2-1.5 mm higher than the transition part (4).

8. The syringe cap of claim 1, wherein: the length dimension of the transition part (4) is 1-2 mm.

9. The syringe cap of claim 1, wherein: the inner wall of the top of the transition part (4) is provided with a groove (8).