Disposable sterile safe injection needle and machining method thereof

Abstract

The invention discloses a disposable sterile safe injection needle which comprises a syringe needle thin tube, a first inclined surface forming a 15-degree angle with an axial surface of the thin tube and a second inclined surface forming at 18-degree angle with the axial surface of the thin tube, wherein the width between two arc top ends of a crescent-moon-shaped cross section of the first inclined surface formed on the tube wall portion is equal to the standard thickness of the tube wall, an inner blade, a left blade and a right blade of the cross section are round fillets, and no burrs exist on a plane of the cross section. The disposable sterile safe injection needle cannot pick up tissue of human bodies or bring out fractionation, cannot damage the strength of a syringe needle, is truly safe, and can be used for replacing various medical syringe needles used in various occasions.

Description

technical field [0001] The present invention relates to a medical device, in particular to a medical needle and a processing method thereof, especially a safe medical needle which does not remove various tissues of a human body during injection and needle insertion. Background technique [0002] As we all know, injection needles are widely used as an important medical device for treating human diseases. However, because of its design and processing defects, it poses a great threat to human health. [0003] Traditional medical needles have huge potential hazards. A large number of experimental studies have found that most of the existing single-use traditional needles of different types will form injection wounds when injecting infusions and blood transfusions, and the skin tissue, muscle tissue, fat tissue and vascular lumen tissue under the wound Etc., granular or linear tissue debris will be formed under the action of the opening of the needle, and they will be pushed in...

AI Technical Summary

Problems solved by technology

[0006] In the removal of needle burrs, sandblasting is generally carried out. However, the existing sandblasting is a fast delivery type. The sandblasting machine is equipped with 1 to no more than 5 nozzles to clean the hair and blade at a vertical single angle, and glass is always used. Pill sand is the spray head, its quality is brittle and fragile, and the collision with the metal of the needle is equivalent to hitting a stone with a pebble. As a result, the burr cannot be completely removed, and the extremely sharp inner edge of the needle still exists

Images