Quantified blood sampling system

Abstract

The invention relates to the technical field of medical apparatuses and instruments, in particular to a quantified blood sampling system. The system comprises a vein blood sampling needle, a negativepressure blood sampling pipe and a quantified blood sampling regulating device. The quantified blood sampling regulating device comprises a shell, an installing groove for vertical installation of a negative pressure blood sampling pipe is formed in the side wall of the shell, a cavity is formed inside the shell, an electromagnet is fixedly arranged at the bottom of the cavity, a permanent magnetis arranged above the electromagnet, an elastic piece is arranged between the permanent magnet and the top of the cavity, a sliding groove is formed in the side wall of the installing groove, the sliding groove is communicated with the cavity, a liquid level detecting assembly for detecting the liquid level of the negative pressure blood sampling pipe is in sliding connection with the side wall ofthe installing groove, the liquid level detecting assembly is fixedly connected with the permeant magnet through a connecting piece, the connecting piece is in sliding connection with the sliding groove, a quantified blood sampling controller is arranged on the shell, the quantified blood sampling controller is used for setting a set value of the blood sampling amount, and the position of the liquid level detecting assembly in the sliding groove is controlled through the electromagnet. Accurate quantified blood sampling can be achieved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a quantitative blood collection system. Background technique [0002] The known collection of venous blood samples is collected by using a disposable vacuum blood sampler or a disposable syringe. At present, it is commonly used to collect blood samples with a disposable vacuum blood collection device. Medical personnel usually determine the collection volume comprehensively based on the negative pressure in the blood collection tube and the scale of the blood collection tube. , leading to extremely inaccurate blood collection volume, which may affect the test results. In order to avoid the occurrence of the above problems, most medical staff adopt the principle of preferring to draw more than less, so there are problems of excessive collection and waste, because once the blood collection volume is insufficient, the same blood collection needle cannot continue to be used ...

AI Technical Summary

Problems solved by technology

At present, it is commonly used to collect blood samples with a disposable vacuum blood collection device. Medical personnel usually determine the collection volume comprehensively based on the negative pressure in the blood collection tube and the scale of the blood collection tube. , leading to extremely inaccurate blood collection volume, which may affect the test results

In order to avoid the occurrence of the above problems, most medical staff adopt the principle of preferring to draw more than less, so there are problems of excessive collection and waste, because once the blood collection volume is insufficient, the same blood collection needle cannot continue to be used for blood collection, and only Replacing blood collection needles and negative pressure blood collection tubes for blood collection is not only time-consuming and laborious, but also a waste of resources, and it is easy to cause problems for doctors and patients

Moreover, the vacuum degree of the vacuum blood collection tube lacks effective quantitative detection

Therefore, it is not easy to know whether there is a vacuum in the vacuum blood collection tube or not, what is the degree of vacuum, and it is not easy to know whether the vacuum blood collection tube is a qualified product, because the naked eye cannot distinguish it at all, and the method of sampling random damage can only be adopted in production, so The usability of each vacuum blood collection tube cannot be guaranteed

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