Retracting needle head device and blood taking needle and infusion needle prepared therefrom

Abstract

A retracting needle head device includes a needle base, a needle tube, a needle sleeve, and a protection body; a needle base body is of a dual- trident connection structure; the needle sleeve sleeves a front end of the needle base; the inner part of the front end of the needle base is bonded with the needle tube through an adhesive; an internal connector is arranged in a back end of the needle base; the needle base is snapped in a cavity of the protection body; the center of the needle base body is fixed on one ends of four elastic strips, and the other ends of the four elastic strips extend toward two ends of the needle base, and in the extension direction, a distance from the elastic strips and the needle base is increasing gradually. The invention also discloses a retracting blood taking needle and a retracting infusion needle prepared from the retracting needle head device. The positive effects of the invention are that the elastic strips arranged on the needle base can match a contact point of the protection body, and after the elastic strips are released, the needle base can automatically eject, the tail of the needle base is pulled slowly till the front end of the needle base is snapped, the needle tube enters the protection body with the needle base, and then accidental needle-stick injuries can be prevented, and medical workers can be protected.

Description

technical field [0001] The invention relates to a retracting needle device, and a blood collection needle and a transfusion needle made thereof. Background technique [0002] Blood collection needles or infusion needles are currently one of the most sold medical devices in the world. However, it is worth noting that at present, there are millions of injuries to medical staff injured by needles in hospitals around the world every year, especially by needles used by patients with hepatitis B and AIDS virus. It damages the physical and mental health of medical staff, and the huge cost of treatment due to infection will also impose a serious financial burden on medical staff. [0003] Domestic and foreign companies have invested heavily in the research and development of safe blood collection medical equipment. There are many types of blood collection needles on the market, but these safe blood collection equipment have many shortcomings: [0004] After the old-fashioned dispo...

AI Technical Summary

Problems solved by technology

[0004] After the old-fashioned disposable blood collection and infusion needles are pulled out from the body of the blood collection person, in the disposal stage after the blood collection is completed, when they are disposed of, whether they are put into a professional disposal box or put on a needle cover, they are easy to be punctured. The risk of injury, causing serious consequences such as infection of medical staff

[0005] Later, the blood collection needle adopted the technical means of retractable needle. For example, the applicant is Shanghai Jinta Medical Equipment Co., Ltd., the invention patent named Safety Blood Collection Needle, and the application number is 201410363854.6 discloses a blood collection needle, which can realize the expansion and contraction of the needle. It has many functions and is easy to operate. It has many accessories, complex structure, many mechanized automatic assembly processes, occupies a large area of ​​the production workshop, high production cost, and limited scale production.

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