A safety blood collection needle structure

Abstract

A safe blood lancet structure, applicable in the field of medical instruments, comprising a housing (1), a release apparatus (3), a power apparatus (4), a lancet fixing rod (2) arranged within the housing (1), and a blood lancet (8) fixed at the lancet fixing rod (2). A lancet outlet (11) is provided on either the release apparatus (3) or the housing (1). A positioning block for fixing the lancet fixing rod (2) is arranged between the lancet fixing rod (2) and the housing (1), or a connecting point having an easily split opening (12) is arranged between the lancet fixing rod (2) and the housing (1), or the lancet fixing rod (2) and the housing (1) are arranged independent of each other. This safe blood lancet, by arranging at the lancet outlet (11) a cocking plate (31) that issues a trigger signal for releasing the power apparatus (4) when moved to a blood sampling site, allows the housing (1) and the lancet outlet (11) to come into contact with the blood sampling site only towards the end of a blood sampling process, thus preventing changes in blood components and composition due to squeezing and pressing, ensurs detection precision, also allows the attention of a patient to be diverted, thus reducing pain, and is structurally simple, inexpensive to manufacture, and capable of effectively ensuring safe blood sampling.

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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