Syringe needle and syringe

Abstract

The utility model discloses a syringe needle, which comprises a needle body and a needle seat which are communicated with each other, and is characterized in that the needle seat comprises a head part, a body part and a tail part which are sequentially and coaxially arranged, an accommodating groove is formed in the tail part, a connecting column is convexly arranged at the bottom of the accommodating groove, and the connecting column is connected with the head part of the needle body. An inserting hole penetrating through the head part, the body part and the tail part is formed in the needle seat, and the needle body sequentially penetrates through the head part and the body part through the inserting hole to enter the connecting column. The connecting column structure of the needle seat can be reversely inserted into the needle cylinder for communication, so that the residue of liquid medicine is greatly reduced, the residue-free effect can be generally realized, the waste is reduced, and the environmental pollution is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a syringe needle and a corresponding syringe. Background Technology

[0002] Current syringe structures, such as the disposable syringe disclosed in patent number CN104010681A, have a syringe barrel (100) with a protruding liquid supply port (120) at the front end and a piston (110) inside for containing the injected liquid; the liquid injection interface (200) includes a needle (210) and a needle interface (220) detachably connected to the liquid supply port. That is, the needle is inserted into the liquid supply port for connection. Due to the relatively long length of the liquid supply port, some liquid remains at the port, resulting in waste and environmental pollution. Utility Model Content

[0003] This invention aims to overcome the shortcomings of existing technologies by providing a method to reduce residual syringe needles and syringes.

[0004] The present invention solves the technical problem by adopting the following technical solution: a syringe needle, comprising a needle body and a needle seat connected in communication, characterized in that the needle seat comprises a head, a body and a tail arranged coaxially in sequence, a receiving groove is provided in the tail, a connecting post is provided at the bottom of the receiving groove, and an insertion hole is provided in the needle seat that passes through the head, body and tail, and the needle body passes through the insertion hole sequentially through the head and body to the connecting post.

[0005] In several embodiments, the outer diameter of the connecting post gradually increases from the side away from the body to the side closer to the body, and there is a gap between the connecting post and the side wall of the receiving groove.

[0006] In several embodiments, a positioning ring is arranged around the connecting post, the positioning ring being close to the bottom of the receiving groove and having a gap between the receiving groove and the bottom of the receiving groove.

[0007] In several embodiments, a weight-reducing groove is arranged around the connecting post, the weight-reducing groove being located near the bottom of the receiving groove, thereby forming a connector on the connecting post, the outer diameter of the connector gradually increasing from the side away from the body to the side closer to the body.

[0008] In several embodiments, the outer side of the body is provided with multiple ribs that extend to the outer side of part of the tail.

[0009] In several embodiments, the outer diameter of the body is smaller than the outer diameter of the tail.

[0010] In several embodiments, the tail portion is provided with a plurality of protruding edges.

[0011] In several embodiments, the body includes a first connecting segment and a second connecting segment, the first connecting segment being connected to the body and being arc-shaped;

[0012] The rib includes a first side body and a second side body. The first side body is disposed on the body and extends to the outside of the connecting segment one. The second side body extends from the end of the first side body to the outside of part of the connecting segment two. The second side body protrudes to the outside of the first side body.

[0013] And, a syringe, including a syringe barrel and the syringe needle, wherein the syringe barrel and the syringe needle are inserted into each other.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention utilizes a connecting post structure for the needle holder, allowing it to be inserted backwards into the syringe for connection. This significantly reduces drug residue, achieving a near-zero residue effect, reducing waste, and preventing environmental pollution. Attached Figure Description

[0016] The accompanying drawings described herein are for illustrative purposes only and do not represent all possible implementations, nor should they be considered as limiting the scope of this invention.

[0017] Figure 1 The overall structure of the syringe needle in Embodiment 1 is illustrated schematically;

[0018] Figure 2 Schematic illustration Figure 1 A partially enlarged structure;

[0019] Figure 3 Schematic illustration Figure 1 A structure from another perspective;

[0020] Figure 4 Schematic illustration Figure 1 Planar structure;

[0021] Figure 5 Schematic illustration Figure 4 Cross-sectional structure along the AA direction;

[0022] Figure 6 Schematic illustration Figure 5 A partially enlarged structure;

[0023] Figure 7 The schematic diagram shows a partial cross-sectional structure of the syringe needle in Embodiment 2;

[0024] Figure 8A partial cross-sectional structure of the syringe needle in Embodiment 3 is shown schematically. Detailed Implementation

[0025] The embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present utility model, but not all embodiments.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] like Figures 1-6 As shown, the syringe needle in this embodiment can be inserted and connected with a conventional syringe to form a disposable syringe structure.

[0028] Specifically, the syringe needle includes a needle body 1 and a needle base 2 connected together. The needle base 2 includes a head 10, a body 20 and a tail 30 arranged coaxially in sequence. A receiving groove 40 is provided in the tail 30. A connecting post 50 is provided at the bottom of the receiving groove 40. An insertion hole is provided in the needle base 2 that passes through the head 10, body 20 and tail 30. The needle body 1 passes through the insertion hole through the head 10 and body 20 in sequence to the connecting post 50. The outer diameter of the connecting post 50 gradually increases from the side away from the body 20 to the side closer to the body 20. There is a gap between the connecting post 50 and the side wall of the receiving groove 40 to facilitate insertion and mating.

[0029] When connected to a syringe, the connecting post 50 can be inserted backward into the syringe connector to draw out any residual medication inside the connector.

[0030] Furthermore, multiple ribs 21 protrude from the outer side of the body 20, and the ribs 21 extend to the outer side of part of the tail 30. The outer diameter of the body 20 is smaller than the outer diameter of the tail 30. Multiple protruding edges 31 protrude from the tail 30, and the protruding edges 31 facilitate the pressing of the needle seat 2 to form a tight connection with the syringe.

[0031] Furthermore, the tail section 30 includes a first connecting segment 301 and a second connecting segment 302. The first connecting segment 301 is connected to the body section 20 and is arc-shaped. The rib 21 includes a first side body 211 and a second side body 212. The first side body 211 is disposed on the body section 20 and extends to the outside of the first connecting segment 201. The second side body 212 extends from the end of the first side body 211 to the outside of a portion of the second connecting segment 202, and protrudes to the outside of the first side body 211. The strength is improved through the rib 21 structure.

[0032] Example 2

[0033] like Figure 7 As shown, a positioning ring 51 is arranged around the connecting post 50. The positioning ring 51 is close to the bottom of the receiving groove 40 and there is a gap between the positioning ring 51 and the bottom of the receiving groove 40. The positioning ring 51 provides insertion positioning. When the syringe head is squeezed to the positioning ring 51 and can no longer move forward, it means that the final insertion position has been reached.

[0034] Example 3

[0035] like Figure 8 As shown, a weight-reducing groove 52 is arranged around the connecting post 50. The weight-reducing groove 52 is located at the bottom near the receiving groove 40, thereby forming a connector 53 on the connecting post 50. The outer diameter of the connector 53 gradually increases from the side away from the body 20 to the side closer to the body 20. Thus, the entire connecting post 50 has a mushroom-shaped structure that is wider at the top and narrower at the bottom. The connector 53 can be used for plug-in connection. The position of the receiving groove 40 can reduce the amount of injection molding, reduce costs, and reduce weight.

[0036] All descriptions herein may be presented in any suitable order. Any and all instances used, or exemplary language provided herein (such as "for example"), are merely for the purpose of better illustrating the invention and are not intended to limit the scope of the invention, except as provided in the claims. The language used in the detailed description should not be construed as indicating any essential elements for practicing the invention beyond the claims.

[0037] This utility model describes preferred embodiments, including the best mode known to the inventors for carrying out the utility model. Of course, variations of these preferred embodiments will be readily apparent to those skilled in the art. The inventors intend that those skilled in the art may use these variations as appropriate, and the inventors indicate that the utility model can be implemented in other ways than those specifically described herein. Therefore, this utility model includes all improvements encompassed by the spirit and scope of the utility model as defined by the claims. Moreover, unless otherwise stated or there is a clear contradiction in the content, this utility model includes any of the foregoing elements and all possible variations thereof.

Claims

1. A syringe needle comprising a needle body (1) and a hub (2) in communication, characterized in that, The needle seat (2) comprises a head (10), a body (20) and a tail (30) arranged coaxially in sequence, a containing groove (40) is arranged in the tail (30), the bottom of the containing groove (40) is protrusively provided with a connecting column (50), the needle seat (2) is provided with a plug hole penetrating through the head (10), the body (20) and the tail (30), and the needle body (1) penetrates through the head (10), the body (20) and the connecting column (50) in sequence through the plug hole.

2. A syringe needle according to claim 1, wherein The connecting column (50) gradually increases in outer diameter from the side away from the body (20) to the side close to the body (20), and a gap exists between the connecting column (50) and the side wall of the containing groove (40).

3. A syringe needle as defined in claim 2, wherein A positioning ring (51) is arranged around the connecting column (50), the positioning ring (51) is close to the bottom of the containing groove (40) and has a spacing with the bottom of the containing groove (40).

4. The syringe needle of claim 1, wherein A weight-reducing groove (52) is arranged around the connecting column (50), the weight-reducing groove (52) is arranged at a position close to the bottom of the containing groove (40), thereby forming a connecting head (53) on the connecting column (50), and the connecting head (53) gradually increases in outer diameter from the side away from the body (20) to the side close to the body (20).

5. The syringe needle of claim 3, wherein A plurality of rib edges (21) are protrusively arranged on the outside of the body (20), and the rib edges (21) extend to the outside of part of the tail (30).

6. A syringe needle as defined in claim 5, wherein The outer diameter of the body (20) is smaller than the outer diameter of the tail (30).

7. A syringe needle as defined in claim 6, wherein A plurality of rib edges (21) are protrusively arranged on the outside of the body (20), and the rib edges (21) extend to the outside of part of the tail (30).

8. The syringe needle of claim 5, wherein The tail (30) comprises a connecting section one (301) and a connecting section two (302), the connecting section one (301) is connected with the body (20), and the connecting section one (301) is arc-shaped. The rib edge (21) comprises a first edge body (211) and a second edge body (212), the first edge body (211) is arranged on the body (20) and extends to the outside of the connecting section one (301), the second edge body (212) extends from the end of the first edge body (211) to the outside of part of the connecting section two (302), and the second edge body (212) protrudes to the outside of the first edge body (211).

9. A syringe comprising a barrel, characterized in that, The syringe needle further comprises the syringe needle and the syringe needle plug-in fit.

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