CN214860034U - Device for fixing length of syringe needle - Google Patents

Abstract

The utility model discloses a device of fixed syringe needle length, including a body, the both ends opening of body, and seted up a bayonet socket along the side of body, the bayonet socket is from body top to body bottom, and this is internal to fixed income in cylinder to the bayonet socket, and the syringe needle stretches out from the open-top of body. The inner wall of the body is provided with a raised limit strip, and the bottom of the limit strip is abutted against the step of the needle cylinder and the needle seat. The device of fixed syringe needle length of this application can be convenient fixed to the syringe on, through spacing effectual extension length who shortens the syringe needle of spacing strip, need not change the production part and the processing procedure of syringe, the cost is cheap, convenient to use and can effectual protection needle point.

Description

Device for fixing length of syringe needle

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, a device of fixed syringe needle length.

Background

The needle of the syringe available on the market is designed to have a length capable of taking a medicine from a medicine bottle, so that the length of the needle is generally designed to be between 8 millimeters (mm) and 13 millimeters (mm). However, in the case of subcutaneous injection, the length of the needle is far more than the thickness of the skin tissue, and the liquid medicine is injected into the muscle with a little carelessness. In some use cases, such as insulin injection, if injected directly into the muscle, it will cause a problem of dramatic fluctuations in insulin in the body.

Insulin syringes currently available on the market are pen-type injection needles and conventional syringes. Pen needles are loaded from behind and are spring loaded during use, with a standard exposed needle length of 4 millimeters (mm), which is expensive to manufacture and require a relatively large number of injections for a patient due to the relatively small amount of medication, and therefore are used by the patient without time constraints, such as at home. The conventional syringe must be inserted into a medicine bottle with a needle to take medicine, so the needle cannot be short. Conventional syringes are inexpensive to manufacture, have a relatively large charge and can be used for a reduced number of injections as compared to pen-type syringes, and are therefore used in hospitals and most patients.

Patent CN201721554655.9 discloses a disposable insulin syringe needle shortening cap, which is complicated in design and high in production cost, and in the patent, it is mentioned that reuse is suggested to reduce the cost, but the cost of cleaning and sterilizing increases with the cost of labor and environmental protection, and the technology of the patent does not meet the economic benefits of practical use, and the reuse also has a high risk of cross-infection. In addition, the design of this patent requires the needle to be passed through the hollow passage of the cap before use, and the needle tip is very likely to be damaged during use.

In addition, patent CN201210538274 discloses a needle for insulin with adjustable injection depth. The realization of the patent requires changing the existing injector structure and production process. The injector is the most common medical equipment used in large quantity, and large-scale automatic production is required to reduce the manufacturing cost and supply the injector at a low price. And the change of production components and the process influence is too large and is not easy to realize. Moreover, the length of the needle is adjusted by using the spiral structure, the length of the exposed needle can only be an estimated length, and the situation that judgment or operation errors occur in the field is likely to occur.

SUMMERY OF THE UTILITY MODEL

Because above-mentioned technical problem exists, this application provides a device of fixed syringe needle length, uses on traditional syringe, and its aim at solves the problem that traditional syringe can't accurate control expose the length of syringe needle.

In order to achieve the technical purpose, the following technical scheme is adopted in the application:

the utility model provides a device of fixed syringe needle length, is fixed in on the syringe, and the syringe has a cylinder, a needle file and a needle of fixing on the needle file, and the device of fixed syringe needle length includes: the syringe is fixed in the body from the syringe to the bayonet, and the needle head extends out of the top opening of the body; and at least one limiting strip, wherein the at least one limiting strip is convexly arranged on the inner wall of the body, and the bottom of the limiting strip is abutted against the step of the needle cylinder and the needle seat.

Preferably, the body is injection molded.

Preferably, the number of the limiting strips is multiple, and the limiting strips are uniformly arranged on the inner wall of the body at intervals.

Preferably, the number of the limiting strips is three.

Preferably, the body is a cylindrical structure, and the front end of the body converges towards the middle to form a cone shape.

Preferably, the body has an inner diameter that matches the outer diameter of the barrel.

Preferably, the radian of the bayonet is 90-180 degrees.

Preferably, the arc of the bayonet is 120 °.

Due to the adoption of the technical scheme, the device for fixing the length of the syringe needle can be conveniently fixed on the syringe, the exposed length of the syringe needle is effectively limited by the limiting strip, the production part and the manufacturing process of the syringe are not required to be changed, the manufacturing cost is low, the use is convenient, and the needle point can be effectively protected.

Drawings

FIG. 1 is a front view of an embodiment of the present application;

FIG. 2 is a bottom view of the embodiment of FIG. 1;

FIG. 3 is a schematic perspective view of the embodiment of FIG. 1;

fig. 4 is a schematic view of the embodiment of fig. 1 in use in conjunction with a syringe.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, fig. 1 is a front view of an embodiment of the present application; FIG. 2 is a bottom view of the embodiment of FIG. 1; fig. 3 is a perspective view of the embodiment of fig. 1. The device a for fixing the length of the syringe needle in this embodiment is injection molded and can be applied to the conventional syringe in the market.

The device a comprises a cylindrical body 1 open at both ends. A bayonet 11 is arranged on the side of the body 1, and the bayonet 11 is formed from the top of the body 1 to the bottom of the body 1. The device a is formed by injection molding, and thus has a certain elasticity. The internal diameter of body 1 matches with the external diameter of cylinder 2, and after going into from the bayonet socket card, this application can firmly the joint at the lateral wall of cylinder 2. Referring to fig. 4, when the medicine is taken out using a needle of a normal length, the syringe barrel 2 is inserted into the body 1 through the bayonet 11, and the needle 4 protrudes from the top opening 12 of the body 1. The device A of this application does not influence and normally gets it filled, and easy and simple to handle. Since the needle cartridge passes through the bayonet 11 of the present application, the device a does not touch the needle tip during installation and thus does not cause any damage to the needle tip.

In order to stably and conveniently clamp the syringe, the radian of the bayonet 11 is preferably 90-180 degrees, and particularly the radian of the bayonet 11 is preferably 120 degrees.

Referring to fig. 1 to 3, three raised limit strips 13 are uniformly distributed on the inner wall of the body 1. The bottoms of the limiting strips 13 are all on the same plane. As shown in figure 4, the bottom of each limit strip 13 abuts against the step B of the needle cylinder 2 and the needle seat 3 to play a limiting role. When the step B between the needle cylinder 2 and the needle seat 3 is limited, the length of the needle head 4 extending out of the top opening 12 is the controllable length, and whether the extending length of the needle head 4 meets the requirement of injection or not is judged without the experience of field personnel.

In addition, in addition to the above-mentioned spacing strips 13 evenly arranged along the axial direction of the body 1, the spacing strips 13 may also be arranged on the inner wall of the body 1 in a protruding manner in an annular structure, or arranged on the inner wall of the body 1 in a protruding manner in other shapes and different quantities, as long as the bottom of the spacing strips 13 can abut against the step B to perform the spacing function, which is not limited to this embodiment.

The device of this application is the injection molding of a half open cylinder, and the outside is smooth, and the spacing arch of inboard design utilizes the opening to let the device buckle the cylinder from the side as the bayonet socket, and syringe needle passes through from the side opening, can not touch the needle point to with the step of needle file and cylinder as spacing, reach the purpose that the control exposes the specific length of needle point. For example, insulin injections, the exposed needle tip is no longer than 4 centimeters (mm).

Of course, the device of the present application is not limited to use in the case of insulin injections, for example, hyaluronic acid may be used. The device of the present application can be adapted to be mounted on a syringe as long as it is necessary to precisely control the length of the needle exposed head, and is not limited to the embodiments listed in this creation.

The device is designed to be matched with the existing syringes on the market, any design structure of the existing syringes does not need to be changed, the structure is simple, the price is low, the syringes of different models can be produced into corresponding matched models, the disposable use same as the syringes is realized, a user does not need any on-site experience, and the length of the extended needle can be ensured to be controllable only by selecting the device A for fixing the length of the needle of the syringe according to the needs. The operation is simple and convenient, the needle point is not needed to be damaged in the operation process, and the cost is lower.

The above-described embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Those skilled in the art will recognize that changes and modifications can be made in the invention as described herein without departing from the scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides a device of fixed syringe needle length, is fixed in on the syringe, the syringe has a cylinder, a needle file and one fixes needle on the needle file, its characterized in that, the device of fixed syringe needle length is including:

the syringe comprises a body, a needle cylinder and a needle head, wherein two ends of the body are provided with openings, a bayonet is formed along the side edge of the body, the bayonet is arranged from the top of the body to the bottom of the body, the needle cylinder is fixed in the body from the needle cylinder to the bayonet, and the needle head extends out of the top opening of the body; and

the limiting strip is arranged on the inner wall of the body in a protruding mode, and the bottom of the limiting strip abuts against the needle cylinder and the step of the needle seat.

2. The device for fixing the length of a needle of a syringe according to claim 1, wherein the body is injection molded.

3. The device for fixing the length of the needle head of the syringe as claimed in claim 1, wherein the number of the limiting strips is multiple, and the limiting strips are uniformly arranged on the inner wall of the body at intervals.

4. The device for fixing the length of the needle of the syringe as claimed in claim 3, wherein the number of the stopper bars is three.

5. The device for fixing the length of the needle head of the syringe as claimed in claim 1, wherein the limiting strip is formed by annularly protruding the inner wall of the body.

6. The apparatus for fixing the length of a needle of a syringe according to claim 1, wherein the body has a cylindrical structure, and the front end of the body converges toward the middle in a conical shape.

7. The device for fixing the length of a needle of a syringe according to claim 1, wherein the inner diameter of the body is matched with the outer diameter of the cylinder.

8. The apparatus for fixing the length of a needle of a syringe according to claim 1, wherein the arc of the bayonet is 90 ° to 180 °.

9. The device for fixing the length of a needle of a syringe according to claim 8, wherein the arc of the notch is 120 °.

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