Endoscope Control Knobs With Textured Grip and Lower Torque
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Solution Overview
Problem
Conventional endoscope handles with control knobs are difficult for physicians to operate, especially in tortuous positions, with small hands, or when wearing wet gloves, leading to long-term discomfort and potential injury due to repetitive thumb movement and increased procedure time.
Innovation Solution
The design of endoscopic systems with control knobs featuring textured gripping surfaces and varying lever arm lengths to reduce torque requirements and improve ergonomics, allowing for easier manipulation of the endoscope, particularly with the second control knob, by distributing force more efficiently and providing better grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the control knob size is reduced to fit within the handle, then the device compactness is improved, but the ease of operation deteriorates due to difficulty in reaching and rotating the knobs
Solution Approach 1:
The control knobs feature non-uniform cross-sectional shapes with crests and troughs that provide localized grip points. The varying radius of curvature at different angular positions creates optimal contact points for the thumb, allowing effective rotation despite the overall compact size of the knobs.
Solution Approach 2:
The control knobs employ asymmetric cross-sectional profiles rather than symmetric circular shapes. This asymmetry creates specific crests and troughs that are strategically positioned to match the anatomy of the thumb, providing mechanical advantage for rotation while maintaining a compact overall diameter.
2Ease of manufacture
If the control knobs have smooth surfaces for easy cleaning, then the ease of manufacture is improved, but the ease of operation deteriorates due to slippage with wet gloves
Solution Approach 1:
The control knobs feature localized textured regions in the form of crests and troughs on their surfaces. These textured features are strategically positioned at contact points where the thumb applies force, providing enhanced grip stability while the overall surface remains relatively smooth for ease of cleaning and manufacturing.
Data Source
AI summary
The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to medical devices and systems with control knobs designed for improved usability and ergonomics. For example, the control knobs of the present disclosure may include surface features for improved gripping, surface features for improved perception of medical device orientation within a patient and/or knobs dimensioned for improved thumb reach and reduced torque.