Surgical Handpiece Handswitch Lever for Ergonomic Operation
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Solution Overview
Problem
Existing technologies do not address the need to provide an ergonomically optimized handswitch for a powered surgical handpiece.
Innovation Solution
The technical solution is a handswitch for a powered surgical handpiece that includes a mounting base, a lever, a spring, a run-safe switch, and a lever extension.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional handswitch design is used, then the structure is simple, but the ergonomics and ease of operation are poor
Solution Approach 1:
The handswitch incorporates a movable lever that can be positioned at multiple angles relative to the handpiece, allowing dynamic adjustment to match different surgical procedures and user preferences. The lever pivots on an axis perpendicular to the handpiece longitudinal axis, enabling flexible positioning while maintaining a relatively simple overall structure.
Solution Approach 2:
The handswitch is divided into distinct functional components: a mounting base that attaches to the handpiece, a pivotable lever with switch mechanism, and an adjustable lever extension. This segmentation allows each component to be optimized independently while maintaining ease of operation, and the modular design actually reduces overall structural complexity.
2Ease of operation
If the handswitch is integrated into the handpiece, then the operation convenience is improved, but the installation complexity increases
Solution Approach 1:
The mounting base is pre-configured with attachment features that align with corresponding features on the handpiece. The lever is pre-assembled with the switch mechanism and spring, allowing for quick installation without complex assembly steps. This preliminary preparation of components significantly reduces installation complexity while maintaining integrated operation convenience.
Solution Approach 2:
The mounting base acts as an intermediary component between the handpiece and the lever assembly. It provides a standardized interface that simplifies installation while enabling the lever to be positioned conveniently during operation. This intermediary structure resolves the contradiction by decoupling the installation interface from the operational interface.
3Ease of operation
If the lever extension is made longer, then the ergonomics are improved, but the space requirement increases
Solution Approach 1:
The lever extension length is made adjustable rather than fixed. Users can extend or retract the lever extension depending on the surgical procedure and personal preference, optimizing ergonomics for each situation. The adjustment mechanism uses simple detent features that allow length changes without requiring additional space for a permanently extended lever.
Solution Approach 2:
The lever extension provides enhanced ergonomic support at the distal end where the user's finger contacts it, while keeping the proximal portion compact. This localized extension of functionality allows improved ergonomics without proportionally increasing the overall space requirement of the handswitch assembly.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The technical solution provides an ergonomically optimized handswitch for a powered surgical handpiece, enhancing ease of installation and operation.
Implementation Method 1
a spring disposed between the base and the lever and configured to bias the lever about the pivot axis
Data Source
AI summary
A handswitch for a powered surgical handpiece comprises a mounting base, a lever, a spring, a run-safe switch and a lever extension. The mounting base defines a pivot axis. The elongated lever defines a lever axis substantially normal to a direction of the pivot axis. The lever includes a proximal end pivotably connected to the mounting base at the pivot axis and a distal end opposite the proximal end. The first track is on an inner side of the lever. The second track is on an outer side of the lever opposite the inner side, with both tracks substantially parallel to the lever axis. The spring is between the base and the lever and biases the lever about the pivot axis. The run-safe switch is slidably disposed on the first track. The lever extension is slidably disposed on the second track.