Sensing Element Separation for Surgical Handpiece Reliability
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Solution Overview
Problem
Existing surgical handpieces with integrated sensing elements are prone to failure, rendering them inoperable if the sensing element fails, and Hall-effect sensing elements can be inadvertently activated by magnets, limiting their usability and compatibility with various handpieces.
Innovation Solution
A separate sensing element and switch assembly connects to both the handpiece and console, allowing for easy replacement of the sensing element and preventing accidental activation near magnetic surfaces, enabling compatibility with a variety of handpieces and ensuring continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensing element is integrated into the handpiece, then the handpiece can be activated, but the handpiece becomes inoperable if the sensing element fails
Solution Approach 1:
The sensing element is separated from the handpiece and placed in a separate control assembly. This segmentation allows the sensing element to be independently replaceable, so that if it fails, only the control assembly needs to be replaced rather than the entire handpiece, thereby improving reliability while managing device complexity.
Solution Approach 2:
A separate control assembly acts as an intermediary between the handpiece and the console. This intermediary contains the sensing element and switch, allowing the handpiece to remain functional while the control assembly can be replaced if the sensing element fails.
2Ease of operation
If a Hall-effect sensing element is used to detect the proximity of a magnet, then the switch can be activated, but the sensing element may be inadvertently activated if the handpiece is placed on or near a magnet
Solution Approach 1:
The switch activation function is extracted from the handpiece and placed in a separate control assembly. This allows the use of Hall-effect sensing elements without the risk of inadvertent activation when the handpiece is near magnets, as the sensing element is now in a separate assembly that can be positioned away from magnetic interference.
3Adaptability or versatility
If the switch is designed to work with handpieces that have an imbedded sensing element, then hand-activation is possible, but handpieces without an imbedded sensing element cannot be used
Solution Approach 1:
The control assembly with the sensing element and switch is designed as a universal component that can work with various handpieces. By placing the sensing element in the separate control assembly rather than embedding it in each handpiece, the system achieves broader compatibility across different handpiece models while simplifying the switch design.
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
This solution ensures that surgical handpieces remain operational even if the sensing element fails, and eliminates the risk of accidental activation by magnets, providing reliable and versatile use with various handpieces.
Implementation Method 1
if the sensing element is in the form of a Hall-effect sensing element that detects the proximity of a magnet in or on the lever
Data Source
AI summary
A surgical apparatus and method according to which an assembly is connected to a handpiece and includes a sensing element and a member adapted to move relative to the sensing element to control the operation of a motor in the handpiece.