Endoscopic Attachment Non-Circular Hole Rotation Restriction
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Solution Overview
Problem
Existing endoscopic systems face challenges in restricting the rotation of treatment instruments within the endoscope channel without damaging the inner surface or reducing the channel's opening size, limiting the use of instruments without direction control members.
Innovation Solution
An endoscopic attachment with a non-circular deformed hole is mounted on the endoscope, restricting the rotation of flexible tubes with a corresponding cross-section, allowing for controlled projection and movement of treatment instruments while maintaining the channel's functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a fitting groove is provided inside the channel of the endoscope to restrict rotation of the treatment portion, then the rotation of the treatment portion is restricted, but the inner surface of the channel may be damaged and the opening of the channel is reduced in size
Solution Approach 1:
The invention divides the rotation restriction function into two separate components: the endoscopic attachment with a fitting groove for rotation restriction, and the endoscopic treatment instrument with a direction control member. This segmentation allows the attachment to provide rotation restriction without requiring the channel itself to have a fitting groove, thereby preventing damage to the channel inner surface.
Solution Approach 2:
The endoscopic attachment acts as an intermediary component mounted on the distal end of the endoscope. It provides the fitting groove and direction control member interface, serving as a mediator between the channel and the treatment instrument. This intermediary structure protects the channel from direct contact with rotation-restricting features, preventing inner surface damage.
2Stability of the object's composition
If a fitting groove is provided inside the channel to restrict rotation, then the treatment portion rotation is restricted, but the opening of the channel is reduced in size at the distal end
Solution Approach 1:
The invention separates the rotation restriction mechanism from the channel structure itself. The fitting groove is provided in the endoscopic attachment rather than in the channel, and the direction control member is part of the treatment instrument. This segmentation maintains the full channel opening area while still achieving rotation restriction through the interface between the attachment and instrument.
3Ease of operation
If the treatment portion passes through the endoscopic attachment to project from the distal end, then the treatment can be performed, but the rotation restriction is released
Solution Approach 1:
The invention implements a dynamic rotation restriction mechanism where the direction control member engages with the fitting groove during treatment operations. The member can be positioned to engage the groove for rotation restriction when needed, and disengage when the treatment portion needs to be advanced or repositioned. This dynamic engagement maintains rotation restriction during treatment while allowing free movement during instrument manipulation.
Data Source
AI summary
An endoscope system has an endoscope; an attachment for the endoscope, having a non-circular irregularly shaped hole that communicates with an opening of a channel of the endoscope and attached to a forward end of an insertion section of the endoscope; and a treatment instrument for the endoscope, having a flexible tube and a treatment section. An extension/retraction section having a non-circular cross section corresponding to the shape of an opening of the irregularly shaped holes is provided at a forward end of the flexible tube, and the irregularly shaped hole restricts rotation of the flexible tube. Further, the treatment section has directivity about its axis relative to the flexible tube and its rotation is restricted.