A drill handle with parallel trigger and damping buffer for unloading protection

By using a parallel triggering and damping buffer design, the problems of the single operation mode of the drill handle and the delay in overload protection are solved, realizing flexible operation and instant protection, and improving the safety and reliability of minimally invasive orthopedic surgery.

CN122423934APending Publication Date: 2026-07-21CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV
Filing Date
2026-06-18
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing drill handles have problems in minimally invasive orthopedic surgery, such as limited operating modes, signal processing delays in overload protection, and lack of mechanical anti-impact protection, resulting in a high risk of soft tissue injury.

Method used

The design employs parallel triggering and damping buffering. By physically connecting the manual trigger switch and the linkage trigger switch in parallel through pure hardware, combined with the elastic reset component and the unidirectional damping component, instantaneous power failure under load and mechanical anti-surge protection are achieved, avoiding sensor signal processing delay.

Benefits of technology

It enables flexible switching of operating modes, instantaneous power cut-off in case of overload, and mechanical anti-impact protection, improving the safety and reliability of surgery and avoiding accidental soft tissue injury.

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Abstract

The application provides a load relief protection drill handle with parallel trigger and damping buffer, comprising a shell and a drill bit, the working end of the drill bit is located outside the shell, the shell is provided with a linkage trigger switch, a linear guide shaft, a one-way damping assembly, a driving mechanism and an elastic reset member, the driving mechanism can reciprocatingly slide along the linear guide shaft, the linear guide shaft is the same as the axial direction of the drill bit; the drill bit is located in the front side of the driving mechanism, the linkage trigger switch and the elastic reset member are both located in the rear of the driving mechanism; the one-way damping assembly is in transmission connection with the driving mechanism, and is used for decelerating the reset process of the driving mechanism; the outer side of the shell is provided with a manual trigger switch used for starting the driving mechanism; the application realizes significant optimization in operation flexibility, protection timeliness, clinical adaptability and the like.
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