Endoscope Operation Device Inclined Surface Finger Interference
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Solution Overview
Problem
Conventional endoscope operation devices have a stepped portion with a substantially rectangular projecting surface that can cause interference and instability when the middle finger or ring finger is used to support the bending operation knob, leading to difficulty in maintaining the knob's position and smooth operation, especially for users with smaller or larger hands.
Innovation Solution
The design incorporates an inclined surface on the projecting portion between the grasping sections, which reduces the radial projection closer to the insertion section, preventing finger interference and allowing easier support and turning of the bending operation knob, thereby enhancing stability and usability for various hand sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a stepped portion with a substantially rectangular projecting surface is formed between the first grasping portion and the second grasping portion, then the operation device can be grasped in a stabilized state, but it causes interference and instability when the middle finger or ring finger is used to support the bending operation knob
Solution Approach 1:
The surface of the first grasping portion is divided into different regions with different properties: a flat surface for the operator's palm and an inclined surface for the middle finger. This local differentiation allows each region to serve its specific function optimally - the flat surface provides stable grasping while the inclined surface enables smooth bending operation without interference
Solution Approach 2:
The inclined surface is designed with a specific curvature and angle that allows the middle finger to rest comfortably and move smoothly during bending operations. The curved surface adapts to the natural shape of the finger, eliminating the interference problems caused by flat rectangular surfaces
2Stability of the object's composition
If the middle finger is placed on the lower side of the stepped portion to support the bending operation knob, then the operation device can be grasped stably, but it causes difficulty in maintaining the knob's position and smooth operation
Solution Approach 1:
The inclined surface is specifically designed with optimal angle and curvature to provide reliable support for the middle finger during bending operations. This local optimization ensures that the finger can maintain the knob's position reliably while performing smooth operations
3Device complexity
If a substantially rectangular projecting surface is used, then the structure is simple, but it causes interference when fingers are used to support and operate the bending operation knob
Solution Approach 1:
The inclined surface is designed with specific curvature and angle that eliminates finger interference during bending operations. This curved surface adapts to the natural shape of the finger, providing smooth operation without the interference problems caused by flat rectangular surfaces
Data Source
AI summary
An operation device for an into-bore introduction device, includes: a projecting portion formed to project from a grasping section in a radial direction to a longitudinal axis of the grasping section, in a surface between a surface on which a bending operation knob is disposed and a surface on which operator's palm abuts to grasp the grasping section, in the grasping section; a pressing switch disposed on the projecting portion; and an inclined surface formed distantly by as much as a predetermined distance from the pressing switch, and in which an amount of the inclined surface to project outside in the radial direction is decreased on an insertion section side of the projecting portion.