Safety blood taking needle structure

Abstract

The invention provides a safety blood taking needle structure. The structure comprises a shell, a release device, a power device, a needle rod fixing pole and a blood taking needle, wherein the needle rod fixing pole is arranged in the shell; the blood taking needle is fixed on the needle rod fixing pole; a needle outlet is formed in the release device or the shell; locating blocks for fixing the needle rod fixing pole are arranged between the needle rod fixing pole and the shell or connection points with fissile openings are arranged between the needle rod fixing pole and the shell or the needle rod fixing pole and the shell are independent of each other. The safety blood taking needle has the beneficial effects by arranging pressing and triggering plates which send out a power device release and trigger signal when the needle outlet moves to a blood taking site, the shell and the needle outlet come into contact with the blood taking site in the blood taking process, thus avoiding extrusion induced change of blood composition, ensuring the detection precision and further distracting patients to relieve pain; the safety blood taking needle has a simple structure, is low in cost and can effectively ensure safety blood taking; the safety blood taking needle is applied to the field of medical equipment.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a safety blood collection needle structure. Background technique [0002] The current personal blood collection needles are mostly made of plastic film or a simple package with a cap. During the process of transportation, use, and disposal of the blood collection needle, the plastic film will be pierced or the cap will fall off. There is no outer protective layer and the needle will be exposed. Accidentally injuring the operator or a third party will cause intense pain, poor safety performance, and even blood-borne contamination. This type of blood collection needle is still used in most medical institutions due to its low price. [0003] Some personal blood collection needles can be used together with the blood collection pen, but the personal blood collection needle needs to expose the needle during the installation and / or discarding process. The exposure of the needle will ac...

AI Technical Summary

Problems solved by technology

Because the flow rate of different blood components is different, the composition ratio of the blood composition in the squeezed backflow capillary will change from the composition ratio of the blood composition before blood collection, thus affecting the detection results

When it is necessary to accurately detect the blood components of the patient, it may lead to a deviation in the dosage of the drug, or affect the diagnosis and lead to medical accidents.

[0006]The spring installation and the fixed bottom are connected by embedding, and the needle bar fixing rod is connected by rotating or forcibly inserting, resulting in cumbersome operation and difficult quality control. Insufficient firing force, failure to fire, etc., waste manpower and material resources, and increase patient pain

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