High stability ultrasonic blade assembly with multi-stage damping node structure

Abstract

This invention discloses a highly stable ultrasonic scalpel assembly with a multi-level vibration damping node structure, belonging to the field of ultrasonic scalpel technology. Specifically, it includes a scalpel handle, a scalpel shaft, and a scalpel head. One end of the scalpel shaft is connected to the scalpel head, and a transducer for driving ultrasonic vibration of the scalpel shaft is installed inside the scalpel handle. This invention employs a multi-node collaborative vibration damping design, achieving efficient vibration damping through different mechanisms: the inflatable airbag node constructs a flexible buffer layer through elastic deformation and utilizes ball bearings to convert sliding friction into rolling friction, reducing energy loss; the ball bearing transmission node significantly reduces frictional resistance and suppresses micro-amplitude vibrations through a double ball bearing system, while also using ball bearings to roll and deliver lubricating oil to form a lubricating film; the lubrication damping node absorbs high-frequency vibration energy through the viscosity of the lubricating oil, forming a damping layer. These three components work together to construct a three-level vibration damping network of "elastic-rolling-viscosity," effectively improving the stability of the connection between the scalpel shaft and the scalpel handle and extending the service life of the equipment.

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