Needle-guide positioner special for internal arteriovenous fistula puncture

Abstract

The invention discloses a needle-guide positioner special for internal arteriovenous fistula puncture. The needle-guide positioner comprises a fixing seat, a guide plate and a drive device, wherein a rotary shaft is fixed on the front-end lateral wall of the fixing seat along the length direction, the guide plate is disposed at the upper end of the fixing seat, the connecting end of the guide plate is hinged to the front end of the fixing seat through the rotary shaft to allow an included angle to be formed between the guide plate and the fixing seat, and the drive device controls the rotation of the guide plate to allow the size of the included angle to be adjustable; the middle of the upper end face of the guide plate is recessed to form a needle-guide groove vertical to the rotary shaft. The needle-guide positioner special for internal arteriovenous fistula puncture has the advantages that one end, close to rotary shaft, of the needle-guide groove is allowed to face directly to a button hole of previous fistula puncture, a fistula needle can pass the corresponding button hole and enter the internal arteriovenous fistula vessel of a patient along the needle-guide groove during secondary fistula puncture, identical puncture position and needle entering angle, depth and direction are guaranteed, puncture path deviation is avoided, and problems such as pains and vessel damage caused by multi-position puncture are reduced.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a special guide needle positioner for arteriovenous fistula puncture. Background technique [0002] During hemodialysis, a venous fistula must be punctured to establish vascular access. The buttonhole puncture method has its unique advantages. It can reduce pain, increase the success rate of puncture, and reduce complications such as aneurysms and vascular stenosis. The depth and direction of needle insertion are exactly the same. Due to the lack of corresponding tools at present, it is impossible to accurately measure the position, angle, depth and direction of needle insertion, so nurses are performing arteriovenous fistula for hemodialysis patients. During puncture, the puncture path is easily deviated, which increases the patient's pain and affects the success rate of puncture. [0003] Therefore, in view of the above situation, a dedicated guide needle positioner...

AI Technical Summary

Problems solved by technology

The buttonhole puncture method has its unique advantages. It can reduce pain, increase the success rate of puncture, and reduce complications such as aneurysms and vascular stenosis. The depth and direction of needle insertion are exactly the same. Due to the lack of corresponding tools at present, it is impossible to accurately measure the position, angle, depth and direction of needle insertion, so nurses are performing arteriovenous fistula for hemodialysis patients. During puncture, the puncture path is easily deviated, which increases the pain of the patient and affects the success rate of puncture

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