CN217448625U

CN217448625U - Low-residue injection needle

Info

Publication number: CN217448625U
Application number: CN202122905540.2U
Authority: CN
Inventors: 柏保东; 董礼兵; 周玉艳; 董旭; 王云霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-09-20
Anticipated expiration: 2031-11-22

Abstract

The utility model relates to a low-residue injection needle, which comprises a needle seat, a needle body and an inner plug, wherein the needle body is arranged in one end of the needle seat, one end of the needle body extending into the needle seat is a needle tube, and one end of the needle body extending out of the needle seat is a needle head; a cavity is arranged in the other end of the needle seat, the cavity is communicated with the needle tube, and the cavity is matched with the injector; the one end that is close to the needle tubing in the cavity is equipped with matches interior stopper, interior stopper runs through from the top to the bottom and is equipped with the through-hole, the through-hole with the needle tubing matches the setting. The needle stand cavity is provided with the inner plug, the middle of the inner plug is provided with the cylindrical through hole, the liquid medicine directly reaches the needle tube from the injector through the through hole, the inner plug is arranged to ensure that the liquid medicine smoothly reaches the needle tube, meanwhile, the volume in the needle stand cavity is also reduced, and the liquid medicine residue in the needle stand cavity is reduced.

Description

Low-residue injection needle

Technical Field

The utility model relates to a syringe needle especially relates to a low residual syringe needle.

Background

As shown in FIG. 2, the conventional injection needle has a large residual amount of the drug solution and is acceptable when used in combination with a large-sized syringe (e.g., 2ml,5ml,10ml, etc.), but is unacceptable when used in combination with a small-sized syringe (e.g., 1ml or less), particularly for injection of vaccines.

Therefore, it is necessary to develop a small residual amount of an injection needle.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides a low-residue injection needle.

The utility model provides a technical scheme that its technical problem adopted is: a low-residue injection needle comprises a needle seat, a needle body and an inner plug, wherein the needle body is arranged in one end of the needle seat, the end of the needle body extending into the needle seat is a needle tube, and the end of the needle body extending out of the needle seat is a needle head;

a cavity is arranged in the other end of the needle seat, the cavity is communicated with the needle tube, and the cavity is matched with the injector;

the one end that is close to the needle tubing in the cavity is equipped with matches interior stopper, interior stopper runs through from the top to the bottom and is equipped with the through-hole, the through-hole with the needle tubing matches the setting.

In an embodiment of the present invention, the through hole is cylindrical.

In one embodiment of the present invention, the diameter of the through hole is larger than the diameter of the needle tube.

In one embodiment of the present invention, the end of the through hole near the needle tube is a flared opening.

The utility model discloses an embodiment, be equipped with the arch on the cavity inner wall, be equipped with the recess that matches with the arch on the inside plug outer lane.

In an embodiment of the present invention, the inner plug outer ring is in complete close contact with the inner wall of the cavity.

The utility model has the advantages that: the needle stand cavity is provided with the inner plug, the middle of the inner plug is provided with the cylindrical through hole, the liquid medicine directly reaches the needle tube from the injector through the through hole, the inner plug is arranged to ensure that the liquid medicine smoothly reaches the needle tube, meanwhile, the volume in the needle stand cavity is also reduced, and the liquid medicine residue in the needle stand cavity is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of one embodiment of an internal plug;

FIG. 3 is a schematic view of a prior art needle configuration;

FIG. 4 is a schematic view of the connection structure of the present invention and the syringe;

FIG. 5 is a schematic structural view of the safety syringe of the present invention;

FIG. 6 is a schematic structural view of another embodiment of an inner plug;

FIG. 7 is a schematic view of the safety needle and syringe attachment configuration;

in the figure: 100. a needle seat; 101. a cavity; 1011. a protrusion; 102. a boss; 200. a needle body; 201. a needle tube; 202. a needle head; 300. an injector; 400. an inner plug; 401. a through hole; 402. a flared opening; 403. and (4) a groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

As shown in fig. 1 to 2 and 4 to 7, the low-residue injection needle comprises a needle holder 100 and a needle body 200, wherein the needle body 200 is arranged in one end of the needle holder 100, one end of the needle body 200 extending into the needle holder 100 is a needle tube 201, and one end of the needle body extending out of the needle holder 100 is a needle head 202;

a cavity 101 is arranged in the other end of the needle holder 100, the cavity 101 is communicated with the needle tube 201, and the cavity 101 is matched with the injector 300; one end of the cavity 101 close to the needle tube 201 is provided with a matching inner plug 400, the inner plug 400 penetrates from the top end to the bottom end to be provided with a through hole 401, and the through hole 401 is matched with the needle tube 201.

The liquid medicine reaches the cavity 101 in the needle stand from the syringe, then reaches needle tube, syringe needle through the through-hole 401 in the inner plug 400, realizes the injection of liquid medicine, and because the setting of inner plug 400 makes the volume in the cavity 101 reduce in the cavity 101 for the liquid medicine that remains in the cavity 101 reduces, thereby realizes the low residue of syringe needle liquid medicine. The injection needle of the utility model can be a common injection needle and also can be a safe injection needle.

In this application, through-hole 401 is cylindrical, reduces the remaining of liquid medicine in through-hole 401, and is convenient for match with the needle tubing. In order to allow the liquid medicine to smoothly pass through the through hole 401 into the needle tube 201, the diameter of the through hole 401 is larger than that of the needle tube 201.

As shown in fig. 1 and fig. 5, one end of the through hole 401 close to the needle tube 201 is a flared opening 402, and the cavity 101 is provided therein with a boss 102 matching with the flared opening 402, that is, the flared opening of the inner plug is clamped by the boss 102 inside the cavity, so as to prevent the inner plug 400 from falling off from the cavity 101. Be equipped with protruding 1011 on the cavity 101 inner wall, be equipped with the recess 403 that matches with the arch on the interior stopper 400 outer lane, the setting up of recess 403 on protruding 1011 and the interior stopper on the cavity 101 makes interior stopper blocked in the cavity, avoids interior stopper 400 to take place the displacement or drop in the cavity, improves the stability that interior stopper 400 installed in cavity 101. The outer ring of the inner plug 400 is in complete close contact with the inner wall of the cavity 101, a non-contact surface is prevented from being left between the outer ring of the inner plug and the inner wall of the cavity, the contact area between the outer ring of the inner plug and the inner wall of the cavity is guaranteed to the maximum extent, the inner plug and the cavity are in close fit, and the tightness between the inner plug and the cavity is further guaranteed.

As shown in fig. 1 and 5, the needle holder cavity with the inner plug is provided, the space in the cavity is filled with the inner plug, a through hole for the liquid medicine to pass through is reserved in the inner plug, and the space in the cavity is reduced due to the arrangement of the inner plug, so that the liquid medicine residue in the needle holder is greatly reduced.

The utility model discloses simple structure need not to change the structure and the manufacturing procedure of syringe needle, only needs to fill in the setting with the interior and can realize the low of liquid medicine remaining in the needle file cavity, labour saving and time saving, and maneuverability is strong, relatively is fit for the use of small-format syringe. And through set up tubaeform opening and recess on the stopper and realized the zonulae occludens between stopper and cavity, realize that the cavity blocks the stopper in, avoid the stopper to drop in the cavity, in order to further strengthen the inseparable nature of being connected between stopper and cavity, adopt the connected mode of complete in close contact between stopper and cavity inner wall, furthest guarantees the area of contact between stopper and cavity inner wall, guarantees the stability of being connected between stopper and cavity.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.

Claims

1. A low-residue injection needle is characterized by comprising a needle seat, a needle body and an inner plug, wherein the needle body is arranged in one end of the needle seat, the end of the needle body extending into the needle seat is a needle tube, and the end of the needle body extending out of the needle seat is a needle head;

a matched inner plug is arranged at one end, close to the needle tube, in the cavity, a through hole penetrates through the inner plug from the top end to the bottom end, and the through hole is matched with the needle tube;

the through hole is cylindrical; the diameter of the through hole is larger than that of the needle tube.

2. The low residue injection needle of claim 1 wherein the through hole has a flared opening at an end thereof adjacent the needle cannula.

3. The low residue injection needle of claim 2 wherein the cavity has a protrusion on an inner wall thereof and the inner plug has a groove on an outer circumference thereof for receiving the protrusion.

4. The low residue injection needle of claim 3 wherein the outer collar of the inner plug is in substantially intimate contact with the inner wall of the cavity.