Blood taking needle suitable for arms and convenient for blood collection and use method of blood taking needle

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a blood taking needle suitable for arms and convenient for blood collection and a use method of the blood taking needle. The blood taking needle comprises a U-shaped plate, wherein the top of the U-shaped plate is in threaded connection with a distance adjusting screw, a rotating rod fixedly connectedto the top end of the distance adjusting screw is rotationally mounted on a side plate, a first rotating groove and a second rotating groove for rotationally mounting a pressing plate and a connectingrod are formed in the inner side face of the side plate in a front-back adjacent mode, a torsional spring is mounted on the outer side of a first rotating shaft on the bottom side of the pressing plate in a sleeving manner, a sliding rod is mounted at one end of the connecting rod in a sliding manner and connected with a clamping ring through a U-shaped connecting frame, a pressing rod is rotationally mounted on a fixing rod mounted on the inner side face of the side plate below the connecting rod, a circular ring formed by the clamping ring can provide support in the needle tube puncture process, the movement stability of the needle tube is improved, the needle tube can penetrate into the pressing plate to press a protruding blood vessel, a needle handle can push the pressing rod to rotate to bounce the pressing plate, the blood vessel after blood return is enabled to return to the normal state, therefore, the puncture angle of the needle tube does not need to be adjusted, and puncture efficiency and success rate are increased.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a blood collection needle suitable for an arm to conveniently collect blood and a use method thereof. Background technique [0002] The disposable blood collection needle is matched with the disposable human venous blood sample vacuum collection container. Disposable blood collection needles mainly include a blood collection needle tube and a puncture needle. The blood collection needle tube is connected to the puncture needle through a connecting part. And the hard-connected type, in which the hard-connected blood collection needle is formed by directly connecting the blood collection needle seat and the puncture needle seat. When in use, take a collection container and insert the end of the safety cap into the holder, and hold the index finger and middle finger Put the thumb on the handle of the device against the bottom of the container bottle, and the pun...

AI Technical Summary

Problems solved by technology

[0003] When medical personnel perform blood collection and puncture work, the puncture angle needs to be large first and then small. Use the needle tip inclined to the left side of the vein to puncture directly, so that the angle between the needle body and the skin is 30° to 45°. After blood returns, immediately press down the needle handle Insert the needle a little along the vein. Compared with the traditional venipuncture method, this method can increase the success rate of one puncture, and at the same time reduce the patient's pain response to puncture and the damage to tissue blood vessels. However, due to the operation skills, in actual operation, Medical staff with less experience in puncture often cannot grasp the front and rear puncture angles well, resulting in excessive puncture. In addition, because the hands of medical staff who hold the needle will inevitably tremble slightly during the puncture process, the lack of other supports When the needle tube moves, there will be a slight deviation in the route, which will also cause the puncture position to shift and cause puncture failure

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