A nephrology hemodialysis auxiliary device

By designing a movable fixation and catheter limiting auxiliary device for nephrology hemodialysis, the problems of arm muscle spasms and inflexible catheter fixation have been solved, thereby improving the comfort and safety of patients during hemodialysis.

CN116831858BActive Publication Date: 2026-05-05SHANGHAI TONGJI HOSPITAL
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Patent Information

Application Number
CN202310753979.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-25
Publication Date
2026-05-05
Estimated Expiration
2043-06-25

AI Technical Summary

Technical Problem

Existing hemodialysis devices cause muscle spasms and discomfort in the arm when restricting the patient's arm, and the catheter is not fixed flexibly, which affects the treatment effect.

Method used

A nephrology hemodialysis support device was designed, which includes a hand fixation mechanism and a catheter fixation mechanism. It adopts a combination structure of movable fixation and constant temperature heating patch, support ring plate and fixing ring plate, combined with magnet and spring mechanism to achieve stable support of the arm and flexible limit of the catheter, and maintain a comfortable arm temperature through constant temperature heating patch.

Benefits of technology

It effectively prevents arm muscle spasms, provides patients with room to move, reduces the risk of catheter loosening, and improves treatment comfort and safety.

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Abstract

This invention relates to the field of medical auxiliary instruments, and more particularly to a hemodialysis auxiliary device for nephrology. This invention provides a hemodialysis auxiliary device for nephrology that can stably support the patient's arm on the side of the fistula and provides movable fixation for the catheter connected to the fistula puncture needle. It is flexible in use and can effectively prevent muscle spasms in the arm, thus assisting the patient in undergoing more comfortable hemodialysis treatment. The hemodialysis auxiliary device for nephrology includes a base plate, a screw, and a rotating handle; the screw is threaded to the base plate, and the rotating handle is located at the bottom end of the screw. This invention uses a round-headed top rod to limit the inclined ring, locking the height of the support ring plate and the fixed ring plate. Simultaneously, a toothed ring limits the gear, locking the swing angle of the support ring plate and the fixed ring plate. This allows the support ring plate to limit the patient's arm on the side of the fistula, assisting the patient in undergoing stable hemodialysis treatment.
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