What are the classification and use methods of blood collection needle?

Jun 15, 2021

1. Split type Split type blood collection needle is a disposable blood collection needle commonly used in clinical practice, which basically replaces the syringe blood collection method used in the last century. It is usually used in combination with disposable blood collection vessel, and its structure is connected with a blood collection needle on the needle seat at the end of the tube of the intravenous infusion needle When using, need to set rotation fixed in the blood needle detector external front, holding a venipuncture for vein puncture, after the success, insert the vacuum by vascular needles with back-end cavity, the blade cross resistance of blood and blood collection needle stab into the vacuum tube, the stopper is under the effect of negative pressure, the blood inhalation to gather the blood vessels need, so repeatedly, which can realize more blood; After the blood collection is completed, the vein puncture needle is pulled out, local hemostasis is stopped, the needle is removed from the needle holder, and the needle is discarded in the waste box together with the vein puncture needle. Features: After the blood collection needle is fired, the needle core will be locked, making the blood collection needle can only be used once, which can ensure the safety of users; The design of the push-launch provides the user with the simplest operation; High-quality and super-sharp three-edge needle design, can quickly puncture the skin, reduce the pain of patients; A variety of needle sizes and puncture depth, suitable for most of the blood collection needs.

2. Pen-type blood collection needle Pen-type blood collection needle is seldom used in clinical practice. The structure is a through-through needle tube with sharp cutting edges at both ends. The middle and lower parts of the needle tube are fixed on the needle seat. The front end is called the vein puncture needle, the back end is called the blood collection needle, and the surface of the blood collection needle is provided with a blood blocking sleeve and the two ends of the needle are provided with protective cannulas. In clinical practice, blood collection is usually used together with needle holder and disposable blood collection vessel. When in use, the blood collection needle is rotated and fixed in the front end of the outer cylinder of the needle holder to perform venipuncture. After success, the vacuum collection vessel is inserted into the cavity at the back end of the needle holder, so that the cutting edge of the back end of the blood collection needle passes through the blood blocking sleeve and penetrates into the rubber plug of the vacuum tube. Under the action of negative pressure, blood is pumped into the blood collection tube. In this way, the collection of multiple blood samples can be realized.

3. Arterial blood collection needle Arterial blood collection is of great significance for the judgment and treatment of hypoxemia. Arterial blood collection is the basis for accurate determination of hypoxemia.

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