Clean blood collecting instrument and clean blood collecting method and blood collecting device thereof

Abstract

The invention discloses a clean blood collecting instrument and a clean blood collecting method. Specific jobs of the clean blood collecting instrument and clean blood collecting method are mainly completed by a blood collecting device. The blood collecting device comprises a blood collecting joint, a blood drawing needle, an air drawing needle and a blood discharging needle; a blood drawing connector of the blood collecting joint is provided with the blood drawing needle, a blood discharging and air drawing connector of the blood collecting joint is provided with installation holes, and an air exhaust connector of the blood collecting joint is provided with an air exhaust hole; a blood discharging and air drawing needle is provided with a ventilation hole for communicating an air drawing needle hole with the air exhaust hole. Accordingly, the probability that a needle head is inserted into the inner wall of a blood collecting pipe can be effectively decreased; an air drawing function and a blood discharging function are integrated into a same needle, and therefore the stability is relatively better; in addition, both air drawing needle and the blood discharging needle can be directly covered with an elastic bleeding stopping sleeve, therefore, contamination can be prevented, and the safety and the reliability can be significantly improved.

Description

technical field [0001] The present application relates to the technical field of medical devices, in particular to a blood collection device for collecting clean blood from a vein. The present application also relates to a blood collection instrument using the above-mentioned blood collection device for blood collection. [0002] In addition, the present application also relates to a blood collection method using the above-mentioned blood collection device to collect clean blood. Background technique [0003] In the existing blood collection process, one end of the blood collection needle is inserted into a human vein, and the other end is inserted into a blood collection tube preset with negative pressure. Due to the negative pressure of the blood collection tube, blood automatically flows into the blood collection tube. However, the blood collection tubes with preset negative pressure cannot accurately control the blood collection volume during blood collection. Risk of ...

AI Technical Summary

Problems solved by technology

However, in practice, the inventors found that the product adopting this technical solution has at least the following technical problems in use: 1). When the aforementioned product is inserted into a blood collection tube, the distance between the blood-ejecting needle and the air-absorbing needle is relatively large (3-3.5mm) , plus the diameter of the two needles themselves, the maximum lateral distance on the cross section will be larger. Therefore, when inserting the blood collection tube, special attention should be paid not to insert the needle into the inner wall of the blood collection tube, otherwise it will easily damage the blood collection tube. Pollution in the tube; 2). Due to the large distance between the blood evacuation needle and the suction needle (3-3.5mm) of the aforementioned products, and the needles are one in front of the other, when inserted into the blood collection tube, the force will have a sudden change, so that the operation Or it is easy to vibrate and cause deflection during the insertion operation, which may cause the needle to be inserted into the inner wall of the blood collection tube

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