Blood taking needle

Abstract

The invention discloses a blood taking needle, which comprises a front shell and a base, wherein the front shell and the base are mutually connected; a triggering element capable of forming an ejection channel with the front shell is arranged in the front shell; a needle body which can be fired by the triggering element is arranged in the ejection channel; and a spring is arranged between the lower end of the needle body and the base. According to the blood taking needle disclosed by the invention, the problem that the blood taking needle is likely to be fired by mistake in the prior art is solved. A slot part between the elastic walls of the triggering element is provided with a clamping block; before the blood taking needle is used, an interval of the clamping blocks between the elastic walls is smaller than the width of the side wall of the needle body; the inner side of the front shell is provided with an extruded part to limit the elastic wall of the triggering element from being supported to release the needle body so as to prevent firing by mistake from being generated during manufacture, installation or transportation; after the blood taking needle is used, the blood taking needle enters the self-locking state and can not be reused, a needle point is automatically retracted into the shell, and the safety after the blood taking needle is used is guaranteed; the front shell comprises a protective cap; the height of the protective cap is higher than the height of the triggering element, which extrudes out of the front shell; a blood taking device can be prevented from being fired before being used; and meanwhile, whether the blood taking device is started to use or not can be easily identified.

Description

technical field [0001] The invention relates to a blood collection needle and belongs to the technical field of medical instruments. Background technique [0002] The results of the "Nutrition and Health Survey of Chinese Residents" released by the State Council Information Office in 2004 showed that the number of people with high blood pressure, high blood sugar, and high blood fat in my country is rapidly increasing. The prevalence of diabetes over the age of 20 in large cities rose from 4.6% to 6.4%, and in small and medium-sized cities from 3.4% to 3.9%. The prevalence of diabetes among residents aged 18 and over in my country is 2.6%, and the rate of impaired fasting blood glucose is 1.9%. The prevalence of diabetes is rapidly increasing worldwide. According to statistics, the number of diagnosed diabetic patients in my country is as high as 90 million, becoming the country with the largest number of diabetic patients in the world. The incidence of diabetes in my cou...

AI Technical Summary

Problems solved by technology

[0004] Most of the lancets currently on the market use the ejection method to fire the lancet to achieve blood collection, but due to the unreasonable design of the ejection structure, there is usually a situation of false firing, which makes the lancet unusable

[0005] At present, domestic blood collection needles are generally composed of ABS shell and stainless steel needle core. After use, the shell and needle core of the blood collection needle cannot be degraded, which has become a huge environmental pollution, and the destruction and disposal of the stainless steel needle core are difficult.

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