Injection needle with spiral surface

Abstract

The invention relates to an injection needle with a threaded surface, which is applied to the field of disposable interventional medical apparatus in the process of clinical transfusion, sampling, puncturing, and the like. The injection needle is characterized in that the surface of the injection needle has a threaded surface with a threaded structure form, wherein a thread adopts an equidistant thread or a variable-distance thread, the depth (c) of a thread groove is 0.01-0.10mm, the width (a) of the thread groove is 0.02-0.50mm, and the thread distance (b) is greater than 1mm. The thread groove can be an inverted triangle, a circular arc, a rectangle, and the like. The threaded form is added on the surface of a needle tube for reducing the continuous friction resistance of the needle tube in the injecting and puncturing process and the stimulation effect of the needle tube to subcutaneous nerve endings in the puncturing process and realizing the pain relieving effect.

Description

technical field [0001] The invention relates to an injection needle with a thread shape on the surface. It is used in the field of disposable interventional medical devices for clinical infusion, sampling, puncture and other processes. Background technique [0002] Intervention therapy such as infusion injection and puncture sampling is an indispensable and main treatment method in clinical medicine. However, the damage to the skin tissue and the pain caused by the instrument during the injection puncture are one of the factors that patients fear and avoid treatment. Generally speaking, human beings need to be inoculated with various vaccines from birth, and various medical treatments such as punctures and injections are required when various diseases and injuries occur. Effectively reducing the injection, puncture pain and body damage of the subject is one of the main directions of current medical device research. [0003] At present, studies on the pain mechanism of inj...

AI Technical Summary

Problems solved by technology

However, this microneedle has the disadvantages of small infusion tube diameter and high manufacturing cost; (2) the sharpness of the needle tip is optimized

This is a commonly used technology for conventional injection needles at present. It uses the method of optimizing the needle tip, which can effectively reduce the puncture effect, but cannot reduce the resistance of the needle tube during the puncture process; (3) Needle-free injection

Needle-free injection is a technology that uses high-pressure jets to directly inject drug particles into the subcutaneous layer. Because there is no needle puncture process, the drug only reaches the superficial layer of the epidermis, and the requirements for the drug are high, and the implementation cost is expensive; (4) Injection techniques

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