Endoscopic Incision Section with Cylindrical Retainer
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Solution Overview
Problem
Conventional endoscopic incision systems face issues with maintaining a stable shape during incision, as the incision section tends to twist or bend, and there is a risk of inadvertent fall-off during rotation, leading to incomplete or difficult tissue incision.
Innovation Solution
An endoscopic incision system with a cylindrical member covering the endoscope's distal end, featuring a bougie section and radially expanding linear members that maintain stiffness and prevent twisting or bending, allowing for precise and stable incision without shape deformation, even during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the incision section is made flexible to accommodate rotation, then ease of operation is improved, but the incision section twists and bends during incision
Solution Approach 1:
The incision section is divided into multiple segments or struts that can rotate relative to each other while maintaining overall structural integrity. This segmentation allows the incision section to accommodate rotation without twisting or bending, resolving the contradiction between rotation capability and shape stability.
Solution Approach 2:
The incision section utilizes composite material construction combining flexible and rigid components. The composite structure enables rotation while maintaining the geometric shape and stiffness required for stable incision, addressing both ease of operation and shape maintenance.
2Shape
If the incision section is preset with higher stiffness to prevent twisting, then shape stability is improved, but adaptability during rotation is reduced
Solution Approach 1:
The incision section employs dynamic characteristics with variable stiffness properties. The structure can adapt its rigidity during rotation, maintaining shape stability when needed while allowing controlled movement during operation, thus resolving the contradiction between stiffness and adaptability.
Solution Approach 2:
The physical parameters of the incision section, particularly stiffness and flexibility, are optimized to specific ranges that simultaneously provide shape stability and rotation adaptability. By carefully selecting material properties and structural parameters, both requirements are satisfied.
3Productivity
If the incision section is expanded radially for incision, then incision effectiveness is improved, but the risk of inadvertent fall-off increases
Solution Approach 1:
The incision section is nested within a retaining structure or cylindrical member that provides mechanical support and prevents fall-off. The nested configuration allows radial expansion for effective incision while the outer structure maintains retention, resolving the contradiction between incision effectiveness and reliability.
Solution Approach 2:
An intermediary retaining structure or anchoring mechanism is introduced between the incision section and the surrounding tissue. This intermediary element provides the necessary support to prevent inadvertent fall-off while allowing the incision section to expand radially for effective tissue cutting.
Data Source
AI summary
An endoscopic incision system includes: an endoscope; a cylindrical member for covering at least a distal end of an insertion section of the endoscope; and at least an incision section for incising a living tissue, the incision section being provided to a distal end of the cylindrical member and being capable of being exposed from the distal end of the cylindrical member outwardly. In this configuration, the radially expanding incision section will not be twisted or bent, and the incision section prevented from inadvertent fall-off can maintain the desirable shape when it is operated and rotated.