CN205814790U - Telescopic Anti-stabbing blood taking needle - Google Patents

Abstract

The utility model discloses a telescopic anti-stab blood collection needle, which comprises a needle head, a hose, a needle handle connecting the needle head and the hose, and a sheath tube, on which a straight guide extending along the axial direction is arranged. The needle handle is composed of a cylindrical section and an annular flange. The annular flange is provided with a guide bump, and the needle handle is covered with a compression spring; the outer cylindrical surface of the sheath tube is threaded with a threaded sleeve, and the threaded sleeve is provided with a shaft. to the groove. The utility model is a retractable anti-stab blood collection needle. When drawing blood or infusion, the needle head is blocked on the side of the guide bump through the threaded sleeve, so that the needle head is located outside the sheath tube, and blood drawing or infusion puncture is not affected by the sheath tube. ; At the end of blood drawing or infusion, rotate the threaded sleeve so that the axial groove on the threaded sleeve is facing the guide projection. It is automatically retracted into the sheath tube, thereby protecting the medical staff from being stabbed by the needle, and the blood collection needle is safe to use.

Description

Telescopic anti-stab blood collection needle

technical field

The utility model relates to a medical device, in particular to a blood collection needle.

Background technique

In the prior art, the blood collection needles used for infusion or blood drawing are all provided with needle covers on the needles. When infusion or blood drawing, the nurse pulls out the needles to perform infusion or blood drawing puncture. However, after the infusion or blood drawing is over, since the pinhole on the removed needle cover is very small, it is difficult to put the needle cover on the needle again, and it is easy to prick the finger; if the blood collection needle is not covered The needle cover and the blood collection needle are exposed, and there is also a risk of stabbing the nurse when recycling the blood collection needle.

Numerous studies have shown that nurses are the occupational group with the highest frequency of needlestick injuries in hospitals, and nurses are also a group with a high incidence of blood-borne diseases. More than 20 blood-borne diseases can be transmitted through needlestick injuries, among which HBV, HCV and HIV are the most common and harmful.

Therefore how to prevent medical personnel from being stabbed by the blood collection needle is an important problem to be solved.

Utility model content

In view of this, the purpose of this utility model is to provide a telescopic anti-stab blood collection needle to solve the technical problem that the blood collection needle in the prior art is easy to stab the medical staff.

The utility model telescopic anti-stab blood collection needle comprises a needle head, a hose, a needle handle connecting the needle head and the hose, and a sheath tube, the sheath tube is provided with a straight guide groove extending along its axial direction, The needle handle is composed of a cylindrical section and an annular flange arranged at the rear end of the cylindrical section. The annular flange is provided with a guide lug slidingly fitted with a straight guide groove; the inner hole of the sheath tube is formed with the cylindrical end The front guide hole segment that is slidingly fitted and the rear guide hole segment that is slidingly fitted with the annular flange are composed of a compression spring whose end is pushed against the end surface of the annular flange;

The outer cylindrical surface of the sheath tube is threadedly connected with a threaded sleeve, and the threaded sleeve is provided with an axial groove for avoiding the guide bump;

A handle is also provided on the outer cylindrical surface of the front end of the sheath tube.

Further, the retractable stab-proof blood collection needle also includes a needle cover matched with the needle.

The beneficial effects of the utility model:

The utility model is a retractable anti-stab blood collection needle. When drawing blood or infusion, the needle head is blocked on the side of the guide bump through the threaded sleeve, so that the needle head is located outside the sheath tube, and blood drawing or infusion puncture is not affected by the sheath tube. ; At the end of blood drawing or infusion, rotate the threaded sleeve so that the axial groove on the threaded sleeve is facing the guide projection. It is automatically retracted into the sheath tube, thereby protecting medical staff from needle-stick injuries, and the blood collection needle is safe to use.

Description of drawings

Fig. 1 is the structure schematic diagram of the needle head of the telescopic anti-stab blood collection needle of the present embodiment extending out of the sheath tube;

Fig. 2 is a schematic diagram of the structure of the telescopic anti-stab blood collection needle in the state where the needle is retracted into the sheath;

Fig. 3 is the top structural schematic diagram of sheath pipe and threaded sleeve combination;

Fig. 4 is a front structural schematic diagram of the threaded sleeve.

detailed description

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

As shown in the figure, the retractable anti-stab blood collection needle in this embodiment includes a needle 1, a hose 2, a needle handle 3 connecting the needle and the hose, and a sheath tube 4, which is provided with a Its axially extending straight guide groove 5, the needle handle 3 is composed of a cylindrical section 31 and an annular flange 32 arranged at the rear end of the cylindrical section, and the annular flange is provided with a guide projection that is slidably matched with the straight guide groove 6. The inner hole of the sheath tube is composed of a front guide hole segment that is slidably fitted with the cylindrical end and a rear guide hole segment that is slidably fitted with the annular flange

The needle handle is covered with a compression spring 7 whose end is pushed against the end face of the annular flange;

The outer cylindrical surface of the sheath tube is threadedly connected with a threaded sleeve 8, and the said threaded sleeve is provided with an axial groove 9 for avoiding the guide bump;

A handle 10 is also provided on the outer cylindrical surface of the front end of the sheath tube.

In this embodiment, the retractable anti-stab blood collection needle, the needle head is blocked on the side of the guide protrusion by the threaded sleeve when drawing blood or infusion, so that the needle head is located outside the sheath tube, and the blood drawing or infusion puncture is not affected by the sheath tube ; At the end of blood drawing or infusion, rotate the threaded sleeve so that the axial groove on the threaded sleeve is facing the guide projection. It is automatically retracted into the sheath tube, thereby protecting medical staff from needle-stick injuries, and the blood collection needle is safe to use.

The retractable anti-stab blood collection needle of this embodiment also includes a needle cover 11 matched with the needle head. In the initial state, the needle head 1 is located outside the sheath tube. Avoid puncture injuries when handling lancets.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the spirit and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (2)

1. A retractable anti-stab blood collection needle, comprising a needle, a flexible pipe, a needle handle connecting the needle and the flexible pipe, characterized in that: it also includes a sheath tube, said sheath tube is provided with a needle extending along its axial direction The straight guide groove, the needle handle is composed of a cylindrical section and an annular flange arranged at the rear end of the cylindrical section, the annular flange is provided with a guide bump that is slidably matched with the straight guide groove; the inner part of the sheath tube The hole is composed of a front guide hole section that is slidingly fitted with the cylindrical end and a rear guide hole section that is slidingly fitted with the annular flange, and the needle handle is covered with a compression spring whose end is pressed against the end surface of the annular flange; The outer cylindrical surface of the sheath tube is threadedly connected with a threaded sleeve, and the threaded sleeve is provided with an axial groove for avoiding the guide bump; A handle is also provided on the outer cylindrical surface of the front end of the sheath tube. 2. The retractable anti-stab blood collection needle according to claim 1, further comprising a needle cover matched with the needle head.