Endoscope Suture Instrument for Full-Thickness Tissue Resection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional endoscopic mucosal resection methods face limitations in performing full-thickness resection of widely spreading diseased tissue due to the need to retract tissue into a housing for resection, which restricts the scope of resection.
Innovation Solution
A suture instrument for an endoscope with a forceps that grasps tissue and a holding section that extends, retracts, or pivots to lift and pinch the tissue, allowing for wide-range tissue lifting and suture placement, enabling full-thickness resection without the need for tissue retraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If tissue is suctioned into a housing for resection, then resection can be performed, but the scope of resection is limited and full-thickness resection of widely spreading diseased tissue is difficult
Solution Approach 1:
The invention extracts the tissue retraction function from the housing structure and replaces it with a dedicated lifting instrument (forceps) that operates independently. This allows the housing to be simplified while enabling wide-range tissue lifting and full-thickness resection without the constraints of suction-based retraction.
Solution Approach 2:
The lifting instrument serves multiple functions: it grasps tissue, lifts it to the housing opening, and positions it for resection. This multi-functional design eliminates the need for separate retraction mechanisms, expanding the scope of resection while maintaining device simplicity.
2Adaptability or versatility
If forceps extend and retract along a track intersecting the tissue surface, then tissue can be lifted in the thickness direction for wide-range resection, but the mechanism complexity increases
Solution Approach 1:
The forceps mechanism is designed to be dynamically movable along a predetermined track, transitioning from a retracted position to an extended position where it intersects the tissue surface. This dynamic configuration enables the forceps to lift tissue in the thickness direction effectively, achieving wide-range resection capability.
3Ease of operation
If holding section extends and retracts or pivots to contact lifted tissue, then tissue can be pinched for suture placement, but the device complexity increases
Solution Approach 1:
The holding section is segmented into an extending/retracting mechanism and a pivoting mechanism, allowing independent control of each function. This segmentation enables precise tissue pinching and suture placement operations while maintaining manageable device complexity through modular design.
Data Source
Figure 1~4
Figure 5~7
Figure 8~10
AI summary
To provide a suture instrument for an endoscope which can lift a diseased tissue in a wide range for performing en bloc resection of the diseased tissue in full thickness. A suture instrument for an endoscope which is attachable to an endoscope that is able to be inserted into a body cavity from a distal side, includes: a device including a lift instrument that grasps a living tissue located at a predetermined grasping position to lift the living tissue in a thickness direction of the living tissue, and a forward expansion section that pinches the living tissue lifted by the lift instrument; and a suture device that sutures the living tissue pinched in the device, wherein the forward expansion section includes a living-tissue-introducing section that extends and retracts in a direction intersecting the living tissue lifted by the lift instrument to be contacted with the living tissue.