Endoscope Dial Neutral Position Detection and Return Mechanism
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Solution Overview
Problem
Existing endoscope devices face difficulties in maintaining the curving state of the curving portion and returning to a neutral position accurately, especially after multiple rotational operations, leading to operator confusion and instability in curving operations.
Innovation Solution
An endoscope device with an operation input unit that includes an elastic member generating elastic force to return the curving portion to a linear state when curved at a predetermined angle, and a mechanism that allows the operation input unit to maintain the curving state without returning to the neutral position when the operator's hand is taken off, ensuring easier operation and reduced confusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the operation dial is configured to be rotated one or more times (360° or more) to curve the curving portion, then the curving operation range is extended, but the operator finds it difficult to find the original neutral position and know the actual curving state
Solution Approach 1:
The patent implements a neutral position detection mechanism that provides feedback to the operator about the current position of the operation dial. A detection unit detects the neutral position of the operation dial and provides visual or tactile feedback (such as a mark or indicator) to help the operator identify the neutral position even after multiple rotations, thus resolving the information loss problem while maintaining extended curving range
Solution Approach 2:
The patent uses visual indicators such as colored marks or lighting changes to indicate the neutral position of the operation dial. When the dial returns to or approaches the neutral position, a visual signal (color change, illumination) alerts the operator, enabling easy identification of the neutral position after multiple rotations without limiting the curving operation range
2Ease of operation
If an urging mechanism with spiral springs is used to return the operation dial to the neutral position, then the operation dial returns automatically when hand is taken off, but the elastic force affects the operation input unit even when the curving portion is within the predetermined angle range
Solution Approach 1:
The patent employs a dynamic braking mechanism that adjusts its braking force based on the position of the operation dial. When the dial is within the predetermined angle range from neutral, the braking force is reduced or eliminated. When the dial exceeds this range, the braking force is applied to assist the elastic member in returning the dial to neutral, thus preventing elastic force interference during normal operation while maintaining automatic return capability
Solution Approach 2:
The patent introduces a braking mechanism as an intermediary between the elastic member and the operation dial. This intermediary controls when the elastic force is applied - only when the dial exceeds the predetermined angle range - thereby mediating between the need for automatic return and the need to prevent elastic force interference during normal operation
3Measurement precision
If the operation dial returns to the neutral position under visual observation after multiple rotations, then the actual curving state can be known, but the operator must repeat the rotational operations to reach the desired curving angle
Solution Approach 1:
The patent implements a detection and feedback mechanism that continuously monitors the position of the operation dial and provides real-time feedback to the operator. This includes visual indicators showing the current curving state and the neutral position, eliminating the need for the operator to repeatedly rotate the dial to check the curving state, thus reducing operation time while maintaining precise curving state awareness
Solution Approach 2:
The patent replaces the purely mechanical operation dial system with an electromechanical system that includes sensors and visual indicators. The detection unit electronically monitors the dial position and provides visual feedback, substituting the need for manual visual observation and repeated mechanical rotations with an automated sensing and display system that reduces operation time while maintaining measurement precision
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 solution enables precise control and maintenance of the curving state, simplifying operations and reducing operator hesitation by allowing the curving portion to return to a desired range without complete neutralization, enhancing the overall operability of the endoscope device.
Implementation Method 1
an elastic member which is deformed in accordance with the actuation of the operation input unit, the elastic member generating elastic force for the operation input unit to return the curving portion to the linear state when the curving portion is curved at a predetermined angle or more
Data Source
AI summary
An insertion device sets engage range which it prescribed in return power to the neutral position by elastic force of the spring and rotation resistance force by the slide power by elastic member for dial portion performing curving operation of a curving portion. If a rotary angle is beyond an engage range, the dial part lets a rotary point of view to order return in an engage range and, if there is a rotary angle in an engage range, the dial part keeps a target part in an observation field of vision.