an arterial indwelling needle

Abstract

The invention relates to an arterial indwelling needle, which at least includes: an indwelling needle assembly, which is used to establish a vascular access connected to the blood vessel of the affected limb, and a hose base, which is arranged on the indwelling needle assembly and has two open sides. The arterial indwelling needle also includes: an outer cylinder, which is arranged in the cavity of the hose base and one end of the cylinder body is connected with the cavity of the hose base. The inner wall is relatively fixed, and the inner cylinder is sheathed in the outer cylinder, wherein the needle body is separated from the outer cylinder in such a way that the outer cylinder and the inner cylinder are in a completely socketed state during the removal process. cavity of the hose base described above.

Description

Technical field[0001]The present invention relates to the field of indwelling needles, and in particular, there is an arterial indigner needle.Background technique[0002]At present, the fistula (AVF) has become the first choice for the vascular passage of patients with maintenance hemodialysis due to its blood flow, and has become the first choice for aid blood dialysis patient. It is called the "lifeline" of blood dialysis patients. However, it is often caused by various reasons, and it is difficult to close the internal fistula, and the dialysis cannot be carried out normally. How to do the nursing of the inner fistula, extend the life of the inner fistula, is a problem that each dialyzine nurses need to pay attention. Regarding the fistula, the fistula is a vascular passage or a self-motivated venous fistula. It is a lifeline of hemodialysis patients, which is responsible for introducing blood into an in vitro circulating device and returns to the patient's blood vessel. Hemodialy...

AI Technical Summary

Problems solved by technology

[0006] In view of the deficiencies of the existing technology, for example, after the safety protection device is withdrawn, blood remains on the end of the indwelling needle exposed to the external environment, which is easy to pollute the environment and the hands of the operator are polluted. If it is in place, it will cause cross-infection among patients and nosocomial infection. Various types of innovative anti-acupuncture safety indwelling needles have been proposed, and an anti-acupuncture protection device for indwelling needles is proposed to avoid the exposed needles and easy puncture injuries. , what this type of solution achieves is only the relative closure of the needle when the needle exits the tail end of the indwelling needle. However, the needle head and the tail end of the indwelling needle are always separated from each other under the external environment. There is blood remaining inside, which leads to the moment when the needle and the tail end of the indwelling needle are separated from each other, the blood is inevitably brought out from the inside of the tail end of the indwelling needle, and blood remains on the outer wall of the tail end exposed to the external environment. The safety indwelling needle proposed in the prior art cannot solve the problem of easily polluting the environment when the safety protection device is withdrawn

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