Endoscope Elevator Lever Rotational Movement Regulation
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Solution Overview
Problem
Existing endoscopes with rotational movement regulating mechanisms, such as those described in JP2016-67768A and WO2018/079792A, cannot easily adjust the rotational movement range of the elevator operation lever according to user preference, limiting adaptability for different users or medical procedures.
Innovation Solution
An endoscope design featuring a bending operating member and an elevator operation lever with a finger hook part containing a rotational movement regulating member, allowing the rotational movement range to be adjusted by changing the position or shape of the regulating member, enabling selection of the rotational movement range based on user preference through interchangeable levers with varying regulating member configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotational movement regulating mechanism is provided in the endoscope, then the rotational movement range of the elevator operation lever is regulated, but the rotational movement range cannot be easily changed according to user preference
Solution Approach 1:
The elevator operation lever is divided into a main body and a detachable finger hook part. The rotational movement regulating member is integrated into the finger hook part, which can be detached and replaced. This segmentation allows the regulation mechanism to be changed by simply replacing the finger hook part rather than modifying the entire lever assembly.
Solution Approach 2:
The endoscope system transitions from a fixed rotational movement range to a dynamically adjustable range. By providing multiple finger hook parts with different rotational movement regulating members positioned at various locations, the system can adapt its rotational movement characteristics based on user preference and procedural requirements.
2Device complexity
If the rotational movement range is fixed in the endoscope design, then the structure is simple, but the adaptability for different users and medical procedures is limited
Solution Approach 1:
The elevator operation lever main body is designed as a universal component that can work with multiple types of finger hook parts. Each finger hook part provides a different rotational movement range, allowing a single lever assembly to serve multiple functions and accommodate different user needs without requiring completely separate lever designs.
Solution Approach 2:
The rotational movement range parameter is made variable by changing the position of the rotational movement regulating member on different finger hook parts. This allows the same basic mechanism to operate with different rotational ranges (e.g., first range, second range, third range) simply by changing the regulatory element's position, rather than redesigning the entire mechanism.
Data Source
AI summary
An endoscope according to the embodiment of the present invention includes a bending operating member and an elevator operation lever that displaces an elevation angle of a treatment tool elevator for elevating a treatment tool provided in a distal end of an insertion part, the bending operating member and the elevator operation lever being attached to a body part of an operating part, in which the elevator operation lever includes a finger hook part inside which a rotational movement regulating member is provided, and by bringing the rotational movement regulating member and an outer peripheral surface of the body part of the operating part into contact with each other, rotational movement of the elevator operation lever is regulated.