CN2852940Y - Disposable blood taking needle - Google Patents

Abstract

The utility model relates to a disposable blood collection needle, which is characterized in that: a button is provided at one end of the needle sleeve, two corresponding slide grooves are provided in the needle sleeve, a spring sheet group is provided at one end of the needle body, a breakable needle tip sleeve is provided at the other end of the needle body, and a safety bolt is provided on the needle tip sleeve. When the blood collection needle of the utility model is used, the breakable needle tip sleeve at the end of the needle body needs to be unscrewed first, so that the entire blood collection needle is in a state to be used. When the button is pressed downward, the protrusion on the push sheet will force the needle body to break away and quickly pop forward, and the needle tip will produce a puncture effect. When the needle body moves forward, the elastic force generated by the compression between the spring sheet on the needle body and the needle sleeve causes the needle body to retreat, but because the spring is blocked by the slide groove and cannot move forward any further, when the needle body retreats, the spring will press the top of the needle body, so that the needle body will not return to the initial state, and the spring can no longer press the needle body out of the needle sleeve, ensuring that the blood collection needle can only be used once, and the safety is greatly improved.

Description

A disposable blood collection needle

Technical field:

The utility model relates to the technical field of blood collection needles, in particular to a disposable blood collection needle.

Background technique:

The blood collection needles currently on the market are often not forced to be discarded, and there is a hazard of secondary use, which is easy to cause mutual infection between patients and has a great potential safety hazard. However, the existing disposable blood collection needles often have a structure Complicated and high manufacturing process requirements, which in turn greatly increase the production cost, making it difficult to popularize and apply. At the same time, the existing blood collection needles do not have protective devices, and users may be inadvertently stabbed by the needle tip. The safety is poor, especially for the elderly It is difficult for humans to use.

Invention content:

The purpose of the utility model is to provide an improved disposable blood collection needle, which can overcome some disadvantages in the prior art that the blood collection needle is reused, poor in safety and high in cost.

In order to achieve the above object, the technical solution of the utility model is: a disposable blood collection needle, which mainly includes a needle cover and a needle body inside, and is characterized in that: a button is provided at one end of the needle cover, and a button is arranged inside the needle cover. There are two corresponding slide grooves, one end of the needle body is covered with a shrapnel set, the other end of the needle body is provided with a breakable needle point cover, and a safety bolt is provided on the needle point cover.

When using the blood collection needle of the utility model, it is necessary to unscrew the breakable needle point cover at the end of the needle body first, so that the whole blood collection needle is in the state to be used. When the button is pressed down, the protrusion on the push piece will force the needle body to break away quickly Ejected forward, the needle tip creates a puncture effect. When the needle body moves forward, the elastic force generated by the compression between the shrapnel on the needle body and the needle sleeve makes the needle body retreat. When the needle body retreats, the spring will press the top of the needle body so that the needle body will not Back to the initial state, but because the spring is blocked by the chute, it can no longer move forward, and the spring can no longer make the needle body be pushed out of the needle sleeve, ensuring that the blood collection needle can only be used once, and the safety is greatly improved.

Description of drawings:

Fig. 1 is the structural representation of an embodiment of the utility model

Fig. 2 is the exploded structure schematic diagram of the utility model

Fig. 3 is the sectional view of the utility model needle sheath

Detailed ways:

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The utility model mainly includes a needle sheath 1 and a needle body 2 inside, and is characterized in that: a button 3 is provided at one end of the needle sheath, two corresponding slide grooves 4 are arranged inside the needle sheath, and one end of the needle sheath is set A shrapnel group 5 is provided, and a breakable needle point cover 6 is provided at the other end of the needle body, and a safety bolt 7 is provided on the needle point cover. The chute is a raised strip structure, its shape matches the shape of the needle body, the distance between the chute is smaller than the diameter of the spring, the chute can provide the needle body to slide stably, and at the same time, it has the function of preventing the spring from continuing to move forward. Under the action of movement, the spring can prevent the needle body from bouncing back to the original position, so as to ensure that the blood collection needle can only be used once. The safety bolt is two pieces, which are strip-shaped and arranged symmetrically on the surface of the needle tip cover. The bottom of the needle cover is provided with a needle exit hole matching the shape of the needle point cover and the safety bolt. A spring 8 is sheathed on the top of the shrapnel group, and the spring is offset against the button. A push piece 9 is respectively provided on the left and right sides of the button, and an outward projection 10 is provided on the push piece.

The shrapnel group is composed of two corresponding plastic shrapnels. The two shrapnels are in the shape of "/" and "\" respectively. There is a blocking block 11 corresponding to the position of the two shrapnels inside the needle sleeve. on the block. One end of the needle body is provided with a cylindrical protrusion 12, which matches with the shrapnel group and is sleeved in the shrapnel group. When the shrapnel is moved downward by the push of the button, the needle body can be pushed down together. sports.

In practice, the needle point cover at the end of the needle body must be unscrewed first, and the whole blood collection needle is in a state to be used. When the button is pressed, the push pieces on the left and right sides of the button will move downward and squeeze the spring at the same time Make the spring generate downward elastic force. When the push piece hits the two plastic shrapnels of the shrapnel group, it will force the plastic shrapnel to break away from the blocking block in the needle sleeve and move forward quickly. Under the action of the spring, the shrapnel group will Push the needle body to pop forward quickly to complete the puncture function. When the needle body moves forward, elastic force will be generated between the shrapnel group and the needle sleeve due to the compression of the plastic shrapnel, which will make the needle body move back. When springing, the spring will press the top of the needle body, so that the needle body cannot return to the initial state. Since the spring is blocked by the inner chute of the needle cover and cannot move forward, the blood collection needle cannot be used again, ensuring The safety of the user and the pierced person is guaranteed.

Claims (5)

1. A disposable blood collection needle, which mainly includes a needle cover and a needle body inside, and is characterized in that: a button is provided at one end of the needle cover, and two corresponding slide grooves are arranged in the needle cover, and the needle body One end of the needle body is covered with a shrapnel group, the other end of the needle body is provided with a breakable needle point cover, and the needle point cover is provided with a safety bolt. 2. A disposable blood collection needle according to claim 1, characterized in that: the chute is a raised strip structure, its shape matches the shape of the needle body, and the distance between the chute is smaller than that of the spring diameter of. 3. A disposable blood collection needle according to claim 1, characterized in that: a spring is set on the upper part of the shrapnel group, and the spring is offset against the button, and a push piece is provided on the left and right sides of the button, and a push piece is provided on the push piece. Outer bumps. 4. A disposable blood collection needle according to claim 1, characterized in that: the shrapnel group is composed of two corresponding plastic shrapnels, the two shrapnels are in the shape of "/" and "\" respectively, and the needle cover is equipped with There are blocking blocks corresponding to the positions of the two shrapnels, and the bottoms of the shrapnels are stuck on the blocking blocks. 5. A disposable blood collection needle according to claim 1, characterized in that the safety bolt is two pieces, which are strip-shaped and arranged symmetrically on the surface of the needle point cover, and the bottom of the needle cover is provided with the needle point cover and the safety plug. Shaped to match the pinholes.

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