A peritoneal dialysis solution bag flow regulating device

By introducing a dual mechanical interlocking structure into the peritoneal dialysis fluid exchange device, the problem of easy misoperation of the existing device is solved, physical constraints on the operation sequence are achieved, the risk of peritonitis is reduced, and the safety and reliability of the operation are improved.

CN122440919APending Publication Date: 2026-07-24THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
Filing Date
2026-06-02
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing peritoneal dialysis fluid exchange devices lack locking mechanisms, making them prone to human error, which can lead to dialysis fluid backflow and the risk of bacterial peritonitis. Existing equipment cannot avoid such risks at the structural level.

Method used

A peritoneal dialysis fluid exchange bag flow rate regulating device was designed, which adopts a dual mechanical interlocking structure, including a height positioning locking component and a load trigger locking component. This ensures that the valve can only be operated after the movable frame is raised to a safe height and the fluid bag is suspended in place, forming a progressive mechanical locking to prevent misoperation.

Benefits of technology

The dual mechanical interlocking structure physically limits the operation sequence, avoiding misoperation caused by memory decline or inattention, reducing the risk of peritonitis, and improving the safety and reliability of the operation.

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Abstract

The application relates to the technical field of medical devices, in particular to a peritoneal dialysis liquid replacement bag flow adjusting device, which comprises a fixing frame, a movable frame is slidably connected in the fixing frame, a connecting frame is arranged on one side of the movable frame, a valve is arranged on the side, away from the movable frame, of the connecting frame, the valve is provided with a handle for controlling the opening and closing and the flow size of the valve, a mounting frame is slidably connected to one side of the movable frame, hooks are fixedly connected to the two sides of the mounting frame, a height positioning locking assembly and a bearing triggering locking assembly are arranged in the movable frame; through the height positioning locking assembly and the bearing triggering locking assembly, a double-progressive mechanical locking structure is formed, only when the movable frame is lifted to a preset safe height and the hooks are hung to the dialysis liquid bag, the valve can be unlocked for operation, all kinds of misoperations caused by memory loss, operation distraction, accidental misoperation and operation sequence reversal of patients are eliminated, and the dependence on the self-conscious compliance of the process is eliminated.
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