An arterial puncture wrist bending aid

CN122376282APending Publication Date: 2026-07-14ANHUI PUBLIC HEALTH CLINICAL CENT (ANHUI INFECTIOUS DISEASE HOSPITAL)

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: ANHUI PUBLIC HEALTH CLINICAL CENT (ANHUI INFECTIOUS DISEASE HOSPITAL)
Filing Date: 2026-05-20
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

Some patients have difficulty maintaining a natural wrist flexion due to tension, pain, or abnormal muscle tone, resulting in a high failure rate of arterial puncture, prolonged operation time, and decreased cooperation between doctors and patients.

Method used

A wrist bending aid for arterial puncture was designed, including a base plate, a shell-shaped wrist support, a pivot, a finger pressure rod, and an arm pressure rod. The wrist is passively bent and fixed through a mechanical transmission mechanism to ensure full exposure of the artery. The purely mechanical structure avoids pain or tissue damage caused by rigid compression.

Benefits of technology

It significantly improves the success rate of puncture on the first attempt, and is especially suitable for elderly, children and critically ill patients. It reduces the failure rate of puncture, improves the efficiency of operation, and avoids puncture displacement caused by muscle relaxation or changes in body position.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN122376282A_ABST

Patent Text Reader

Abstract

The application discloses an arterial puncture wrist folding auxiliary device, which comprises a bottom plate and a shell-shaped wrist support arranged on the lower end opening of the upper side of the bottom plate. The upper end surface of the wrist support is in an arc shape for conveniently folding the wrist downward. The upper end surface can be in a semi-cylindrical shape or a part of a cylindrical surface. The wrist support is arranged in front of and behind the bottom plate, which is convenient for folding the wrist downward. A rotating shaft extending forward is rotatably connected to the middle part of the wrist support. The front end of the rotating shaft is connected with a finger pressing rod capable of being pressed downward after being counterclockwise turned over through a front connecting rod obliquely arranged to the upper left. The wrist support further comprises a vertical guide mechanism arranged between the wrist support and the bottom plate and a transmission mechanism arranged between the rotating shaft and the bottom plate. When the wrist support moves downward along the guide mechanism, the transmission mechanism can drive the finger pressing rod to rotate counterclockwise to press the protruding inside of the wrist to facilitate arterial puncture. After the wrist is placed on the wrist support, the whole device is driven to move downward, the transmission mechanism drives the finger pressing rod to rotate counterclockwise, four fingers are pressed downward, the inside of the wrist is protruded, the artery is exposed, and puncture is facilitated.

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