Syringe needle manual retracting type intravenous infusion needle

Abstract

The invention provides a syringe needle manual retracting type intravenous infusion needle, which comprises a needle base, a built-in slide sleeve, and a protecting shell body; the needle base is a hollow cylinder, wherein one end of the needle base is used for mounting the syringe needle while the other end is used for connecting a conveying pipe; the needle base is detachably mounted in the built-in slide sleeve, and freely glided in the built-in slide sleeve; the protecting shell body is formed by buckling upper and lower protecting shell bodies together; the built-in slide sleeve is installed in the protecting shell bod y and freely glided in the protecting shell body; when the needle base is pulled from the built-in slide sleeve out of the limited place, and the built-in slide sleeve is pulled from the protecting shell body out of the limited place, the needle pipe is completely covered and thus the syringe needle cannot be exposed. The syringe needle manual retracting type intravenous infusion needle has the advantages of preventing pricking wound and crossing infection; the product design is minimized, the production technique is simple, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a manually retractable needle for intravenous infusion. Background technique [0002] Disposable safety infusion needle products widely used in domestic and foreign markets are limited in category at present. The main reason is that the volume of the infusion needle is very small. If a safety device is added to the infusion needle, it will be difficult to meet the technical requirements of the infusion needle and to achieve the purpose of convenient use. A kind of safety infusion needle that is effectively used on the market is the flexible tube return sleeve type infusion needle that U.S. Bidi Company produces. The principle is to use the sheath hose attached to the end of the infusion needle, after the infusion is over, pull out the infusion needle and push the sheath hose to the needle head to cover the needle to achieve the purpose of safety protection. Although the...

AI Technical Summary

Problems solved by technology

[0005] 2) The infusion needle should not be too large because it needs to be fixed on the back of the patient's hand for a long time, otherwise it will be inconvenient to use and cause discomfort to the patient, etc.

[0006] There are traditional infusion needles that are widely used in the market. When pulling out the needle tube, the operator will pull up and hold the handle to pull out the needle tube. This operation process will cause the needle tube to rotate in the blood vessel, and there is a potential risk of needle tip damage to the blood vessel. (This is one of the reasons why patients with frequent infusions are prone to phlebitis)

Exposure of used contaminated syringes can easily lead to needle stick injuries and secondary injuries leading to the risk of cross-infection

[0007] In addition to being inconvenient to use, the hose-type safety infusion needle produced by the above-mentioned Wally also has the potential risk of secondary injury and damage to the patient's blood vessels when the needle tube is pulled out

[0008] The following problems or technical difficulties generally exist in the innovative design of other types of safety infusion needles: 1) It is difficult to meet the technical and safety requirements for infusion needles and realize miniaturized design and easy use

One of the reasons is that some products are well designed but cannot be mass-produced industrially.

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