Internal arteriovenous fistula puncture needle for blood purification

Abstract

The invention relates to an internal arteriovenous fistula puncture needle for blood purification, which belongs to the technical field of blood purification equipment, and solves the technical problem that in the prior art, when a remaining part of a remaining needle moves or a blood sampling angle of the remaining needle is adjusted, a metal needle easily damages blood vessels. The internal arteriovenous fistula puncture needle for blood purification comprises a fluororesin sleeve remaining needle and a puncture mechanism, and the fluororesin sleeve remaining needle comprises a remaining fluororesin sleeve. In the blood purification process of a patient, the remaining fluororesin sleeve is indwelled in the body of the patient. The puncture mechanism is used for puncture of internal arteriovenous fistula for blood purification of the patient, the puncture mechanism is lined on the fluororesin sleeve remaining needle, arteriovenous puncture is conducted through the puncture mechanism,and the fluororesin sleeve remaining needle is made to enter arteries and veins. Only the fluororesin sleeve is reserved in the blood vessel, and no metal needle is reserved. Due to the fact that theremaining fluororesin sleeve is soft, the arm can be moved or the position and the blood sampling angle of the remaining fluororesin sleeve can be adjusted in the hemodialysis process, and the large blood sampling amount can be obtained.

Description

technical field [0001] The invention relates to the technical field of blood purification equipment, in particular to an arteriovenous fistula puncture needle for blood purification. Background technique [0002] Since the first application of arteriovenous fistula in hemodialysis in 1962, arteriovenous fistula has been the most ideal permanent access for patients with end-stage renal failure. Arteriovenous fistula can provide the required blood flow for hemodialysis treatment. However, there are many reasons that affect the use time of arteriovenous fistula, and the most important reason is the damage to blood vessels caused by frequent puncture. Therefore, the puncture technique and the protection of the fistula vessels are crucial. [0003] At this stage, most patients with blood purification use traditional dialysis fistula needles. However, traditional dialysis fistula needles all use metal needles. This metal needle has at least the following defects: (1) During the w...

AI Technical Summary

Problems solved by technology

[0004] One of the objectives of the present invention is to propose an arteriovenous fistula puncture needle for blood purification, which solves the technical problem in the prior art that the metal needle is easy to damage the blood vessel when the indwelling needle moves or the blood collection angle of the indwelling needle is adjusted.

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