CN204233535U - A kind of safety scalp needle - Google Patents

Abstract

The utility model relates to a safety scalp needle, which comprises a needle head, an infusion tube and a tubular safety sheath. The needle head and the infusion tube are axially slidably arranged in the safety sheath, and the length of the safety sheath is the same as that of the The length of the needle matches, and the needle has a working position where the needle is exposed in the safety sheath and a recovery position completely in the safety sheath. The end wall of the infusion tube is provided with an elastic button, and the front and rear of the safety sheath The inner walls at both ends are respectively provided with a first button hole and a second button hole matched with the elastic button. In the state of working position and recovery position, the position of the elastic button corresponds to the first button hole and the second button hole respectively. After the safety scalp needle is used, the needle can be completely retracted into the safety sheath, so as to avoid accidental injury to medical personnel.

Description

A kind of safe scalp needle

technical field

The utility model relates to a medical needle, in particular to a safe scalp needle.

Background technique

A needlestick injury is an accidental injury in which a needle penetrates deep into the skin enough to cause the victim to bleed. Injury from contaminated needles and sharps puts you at risk of contracting blood-borne diseases. Existing disposable scalp needles are made up of needle head, needle wing and nylon leather tube. Disadvantages are: the needle of the scalp needle is in a free exposure state after being pulled out from the patient's body or in the process of being separated and put into the sharps box, which may easily cause needle stick injury. Many studies have shown that nurses are the occupational group with the highest frequency of needlestick injuries in hospitals, with an incidence rate of 88.97%. 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. The accidental needlestick injuries of nurses almost all occurred when the liquid was removed. The main reasons are as follows: ①Traditional separation infusion scalp needle operation and immediately take the liquid bag after pulling out the needle. The scalp needle is in a free state, which is easy to hurt yourself and the surrounding people And when dealing with the needle stuck into the bottle stopper, it may cause secondary pollution of blood. ②Traditional separate infusion scalp needle operation puts all the items to be treated together, which is easy to puncture, although medical staff are still unavoidable to be stabbed, scratched and other injuries by sharp instruments in medical work.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a safety scalp needle which is safer to use.

In order to achieve the above object, the utility model provides the following technical proposal: a safety scalp needle, comprising a needle and an infusion tube, characterized in that: a safety sheath is also provided, the needle is fixed on the end of the infusion tube, The safety sheath is a tubular member, the needle and the infusion tube are axially slidably arranged in the safety sheath, the length of the safety sheath matches the length of the needle, and the needle has a A working position where the needle is exposed and a recovery position completely in the safety sheath. The end wall of the infusion tube is provided with protruding elastic buttons. The first button hole and the second button hole, in the state of the working position and the recovery position, the position of the elastic button corresponds to the first button hole and the second button hole respectively.

The safety type scalp needle of the utility model is because the needle head and the infusion tube are axially slidably arranged in a safety sheath, and the end tube wall of the infusion tube is provided with a protruding elastic button, and the inner walls of the front and rear ends of the safety sheath A first button hole and a second button hole matched with the elastic button are respectively provided at the positions matched with the working position and the recovery position, so that when the scalp needle is in the process of puncturing and infusion, the elastic button is stuck in the first button hole In the working position, when the infusion operation is completed, by pressing the elastic button and pulling the infusion tube backward at the same time until the elastic button is stuck in the second button hole and is in the recovery position, the needle is completely retracted into the safety sheath, thereby avoiding damage to the Accidental accidental injury by medical staff.

The utility model further sets: the inner wall of the safety sheath is provided with a guide groove connecting the first button hole and the second button hole, and the section of the guide groove matches the section of the elastic button. By setting the guide groove, the elastic button can be automatically aligned and snapped into the second button hole when the needle is pulled back conveniently.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the needle protruding state of the specific embodiment of the present invention;

Fig. 2 is the enlarged view of part I of Fig. 1;

Fig. 3 is a three-dimensional structure diagram of the state of needle recovery in a specific embodiment of the present invention;

Fig. 4 is a schematic diagram of an exploded structure of a specific embodiment of the utility model;

Fig. 5 is the front view of the needle protruding state of the specific embodiment of the present invention;

Fig. 6 is A-A sectional view of Fig. 5;

Fig. 7 is the front view of the recovery position state of the specific embodiment of the utility model;

Fig. 8 is the B-B sectional view of Fig. 7;

FIG. 9 is an enlarged view of part II of FIG. 8 .

Detailed ways

As shown in FIGS. 1-9 , the safety scalp needle includes a needle 1 , an infusion tube 2 and a safety sheath 3 , and the needle 1 is fixed on the end of the infusion tube 2 . The safety sheath 3 is a tubular member, and for the convenience of operation, a needle wing 301 may be provided on the side of the safety sheath 3 . The inner diameter of the safety sheath 3 is in clearance fit with the outer diameter of the needle 1 and the infusion tube 2, and the needle 1 and the infusion tube 2 are axially slidably arranged in the safety sheath 3, and the length of the safety sheath 3 is the same as the infusion tube 2. The length of the above-mentioned needle 1 matches, that is, the length of the safety sheath 3 should be long enough to accommodate the entire needle 1 therein. The needle 1 has a working position in the safety sheath 3 where the needle 1 is exposed (that is, a position in use) and a recovery position completely in the safety sheath 3 . The end wall of the infusion tube 2 is provided with an elastic button 4, the elastic button 4 may be composed of a button cap 401 and a spring 402, and is arranged on the end of the infusion tube 2. The inner walls of the front and rear ends of the safety sheath 3 are respectively provided with a first button hole 302 and a second button hole 303 matched with the elastic button 4. In the working position and recovery position, the positions of the elastic button 4 are respectively in line with the first button hole. The button hole 302 corresponds to the second button hole 303 , and the first button hole 302 and the second button hole 303 are in clearance fit with the elastic button 4 . In order to facilitate the retraction of the needle 1, the elastic button 4 can be automatically aligned and snapped into the second button hole 303. In this specific embodiment, the inner wall of the safety sheath 3 is preferably provided with a connection between the first button hole 302 and the second button hole. 303 of the guide groove 304, the section of the guide groove 304 matches the section of the elastic button 4.

Claims (2)

1. a safety scalp needle, comprise syringe needle, tube for transfusion, it is characterized in that: be also provided with safety shield, described syringe needle is fixed on the end of tube for transfusion, described safety shield is tubular element, described syringe needle and tube for transfusion are axially slidably disposed in safety shield, length and the described needle length of described safety shield match, described syringe needle has the working position that a syringe needle exposes and the recovery position be in completely in safety shield in safety shield, the end tube wall of described tube for transfusion is provided with outstanding elastic button, the inwall of described safety shield rear and front end is respectively equipped with the first button hole matched with elastic button and the second button hole, working position is with under the state of recovery position, described elastic button position is corresponding with the first button hole and the second button hole respectively.

2. safety scalp needle according to claim 1, is characterized in that: described safety shield inwall is provided with connection first button hole and the second button hole gathering sill, and described gathering sill cross section and elastic button cross section match.