Blood collector, cleaned blood collecting method and cleaned blood collection instrument

Abstract

The invention discloses a cleaned blood collection instrument and a cleaned blood collection method. The specific job is mainly completed through a blood collector, and the blood collector comprises a blood collecting connector, a blood drawing needle, a suction needle and a blood discharging needle; a blood drawing port of the blood collecting connector is provided with the blood drawing needle, a blood discharging and suction port is provided with installation holes, and an exhaust port is provided with an exhaust hole; a blood discharging and suction needle is arranged in the installation holes and comprises a blood discharging needle hole and an exhaust needle hole which are communicated with a blood cavity, and the blood discharging and suction needle is further provided with a vent hole communicated with the exhaust needle hole and the exhaust hole; the blood discharging and suction needle, a blood via cavity and the blood drawing needle are on the same straight line; the blood via cavity is formed in the blood drawing port and shaped like a cylinder or a circular cone. The probability of inserting the needle into the inner wall of a blood collection tube can be effectively decreased. The exhaust and blood discharging functions are integrated on the same needle, and the relative stability is good; an elastic hemostasia cover can cover the needle with the exhaust function and the needle with the blood discharging function direction, contamination is effectively prevented, and the safety and 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 ...

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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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