Disposable micro negative pressure blood collection device

Abstract

The invention relates to the technical field of medical blood collection equipment, and provides a disposable micro negative pressure blood collection device, which mainly includes an outer sleeve, a negative pressure container, a top pressure ring, and a blood collection needle, wherein there is a cavity in the negative pressure container and is in vacuum or negative pressure In the pressure state, the top pressure ring is the control part, which is used to trigger the setting and the spring in the outer sleeve, so that the water stain drives the blood collection needle to move down and penetrate into the skin, and there is a rubber body between the blood collection needle and the negative pressure container. It is a key component. Through the setting of the inner channel, when the blood collection needle is in the upper position, it is different from the negative pressure container. Once the blood collection needle moves down and penetrates the skin, it communicates with the negative pressure container, and then the negative pressure container The cavity in the vacuum or negative pressure state automatically absorbs blood, and a piston disc is set in the negative pressure container to squeeze the blood out to achieve the effect of blood collection, which is suitable for self-collection of blood.

Description

technical field [0001] The invention relates to the technical field of medical blood collection instruments, in particular to a disposable micro-volume negative pressure blood collection device. Background technique [0002] Blood testing is the most common method of disease diagnosis. All kinds of diseases in the human body will be reflected by various indicators of blood. Usually, medical staff use a disposable vacuum blood collection device, which is inserted into the human vein through a blood collection needle. Because the blood collection bottle Under the influence of negative pressure, the blood automatically flows into the blood collection bottle. This method is most commonly used when quantitative blood collection is required, but it is not convenient for users to collect blood by themselves. It must be operated professionally by medical staff, which brings inconvenience to quick diagnosis. With the development of the latest disease diagnosis technology, many infect...

AI Technical Summary

Problems solved by technology

[0007] Related to the aforementioned prior art, the disposable blood collection device must be easy to operate, and at the same time ensure a compact structure, reduce the consumption of manufacturing materials, and reduce the manufacturing cost, so as to achieve the promotion purpose of one-time use. Compared with the deficiencies of the prior art, The present invention also needs to overcome the problem that the traditional blood collection needle has many steps in blood collection, the blood collection process is slow, and even needs to actively squeeze the bleeding to cause excessive pain. In addition, after blood collection, the traditional blood collection needle or blood collection device cannot directly push the blood out. It is necessary to open the appliance or use other appliances such as a pipette dropper, etc. The operation is relatively cumbersome, and the blood sample is easily polluted when it is transferred in each container, and the container used to collect the blood sample cannot be made too small, which is not convenient for the later blood sample to be taken out

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