Endoscope Operation Section Face Contact Fixing
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Solution Overview
Problem
In mother-baby endoscope systems, existing methods for fixing the operation sections of the baby endoscope to the mother endoscope result in a large gap due to point contact, leading to reduced frictional resistance and instability during operations within bile or pancreatic ducts.
Innovation Solution
The endoscope system incorporates a projection portion on the mother endoscope's operation section and a recessed portion on the baby endoscope's operation section, along with a fixing member, to ensure face contact and secure fixation, increasing the contact area and frictional resistance, thereby stabilizing the operation sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If point contact fixing method is used between operation sections, then device complexity is reduced, but frictional resistance decreases and stability deteriorates
Solution Approach 1:
The invention transitions from point contact (0D/1D) to face contact (2D) by introducing projection and recess portions that create extended contact surfaces. The recess portion in the first operation section and the projection portion in the second operation section establish a planar contact interface, dramatically increasing frictional resistance and stability without significantly increasing structural complexity.
2Ease of manufacture
If strap winding method is used to attach operation sections, then ease of manufacture is improved, but contact area is reduced and positioning precision deteriorates
Solution Approach 1:
The invention introduces projection and recess portions as intermediary geometric features that mediate the connection between operation sections. These features act as built-in positioning and fixing mechanisms integrated into the operation section structures themselves, eliminating the need for external straps while achieving both ease of manufacture and high positioning precision through face contact.
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 configuration reduces the gap between operation sections, enhances frictional resistance, and stabilizes the fixed position and posture of the baby endoscope, facilitating more precise and stable operations within narrow ducts.
Implementation Method 1
increasing the contact area and frictional resistance, thereby stabilizing the operation sections
Data Source
AI summary
An endoscope system includes a mother endoscope, a baby endoscope and a fixing member. The mother endoscope includes a first insertion section, a first operation section, a treatment instrument insertion channel and an opening. The baby endoscope includes a second insertion section and a second operation section. The first operation section includes a projection portion. The second operation section includes a recess portion that is a recessed face formed such that at least part of the recessed face comes into face contact with a surface of the projection portion. The second operation section is fixed to the first operation section in a state where the recess portion is in contact with the surface of the projection portion.