Disposable internal fistula puncture trocar

Abstract

The invention provides a disposable internal fistula puncture trocar, which consists of a hollow puncture steel needle and a sleeve, wherein the head end of the sleeve is a soft needle tube, the soft needle tube is connected with a hard seat of the trocar, a tee-joint port seat is connected with a hose, the side end of the tee-joint port seat is connected with a soft catheter which is provided with a screw type port and is sleeved with a hemostatic clip, the tail end of the tee-joint port seat is connected with a rubber plug, the head end of the sleeve is also provided with a movable needle sheath cover, and the puncture steel needle is fixed with a syringe joint in a injection molding way. The invention provides the safe and comfortable internal fistula puncture trocar, so the problems of easily-caused internal fistula vessel swelling and bad comfort level of patients in the original disposable internal fistula puncture trocar (steel needle) are solved, the service lives of the arteriovenous internal fistulas of dialysis patients are prolonged, the nursing process is optimized, and the best effect of appliances can be realized after the use. The sleeve can prevent cross infection, and the trauma is small. The disposable internal fistula puncture trocar has reasonable design, a simple structure, convenience in use, easiness in operation, safety and reliability.

Description

technical field [0001] The invention belongs to medical equipment, and relates to a disposable internal fistula puncture trocar. It is a tool for hemodialysis patients to establish vascular access for internal fistula puncture before hemodialysis. Background technique [0002] Hemodialysis is one of the main renal replacement treatments for patients with renal failure. When performing hemodialysis, the doctor first establishes the patient's vascular access, then connects the pre-flushed dialyzer and the disposable blood line to the patient's vascular access, and establishes extracorporeal circulation to start hemodialysis treatment. [0003] The original disposable internal fistula puncture needle mainly consists of a steel needle connected with a plastic tube. Before the puncture, the internal fistula puncture needle was preflushed with normal saline. Then arteries and veins were punctured and fixed. [0004] The defects in the above structure are: 1. When the original ...

AI Technical Summary

Problems solved by technology

[0004] The defects in the above structure are: 1. When the original disposable internal fistula puncture needle is used for puncture, it is easy to puncture blood vessels and cause puncture failure

2. Hemodialysis patients will inevitably have to move their arms during the 4-5 hours of hemodialysis, which will easily cause blood vessels to be punctured by sharp steel needles, resulting in local swelling and large-scale subcutaneous congestion

3. The high hardness of the steel needle can easily cause bleeding

4. The steel needle is easy to stick to the blood vessel wall, resulting in poor suction of arterial blood flow

5. The original internal fistula puncture needle is not easy to fix, and the puncture needle is prone to slippage

6. Affect the service life of the patient's arteriovenous fistula

7. Poor patient comfort

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