Endoscopic Clip Structure for Stable Tissue Grasping and Re-Grasping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing clip units for endoscopic treatment lack effective mechanisms for securely grasping and ligating resected areas, particularly in challenging anatomical locations, leading to difficulties in maintaining a closed state and ensuring stable hemostasis.
Innovation Solution
A clip unit with a clip having asymmetric first and second arms, each equipped with claws and anchors, and a tube-shaped member for storing the clip, allowing for secure grasping and locking of tissue, facilitated by a self-expanding mechanism and a pressing member to maintain closure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional clip structure is used, then the device is simple in structure, but the clip cannot securely grasp tissue in challenging anatomical locations
Solution Approach 1:
The clip is divided into two asymmetric arms (first arm and second arm) with different configurations. The first arm includes a first claw with first anchors, while the second arm includes a second claw with second anchors. This segmentation allows each arm to be optimized for specific grasping functions, improving overall tissue securing reliability.
Solution Approach 2:
The clip employs asymmetric arm design where the first arm and second arm have different structures. The first arm has a first claw extending in one direction with first anchors, while the second arm has a second claw extending in another direction with second anchors. This asymmetry enables the clip to effectively grasp tissue in challenging anatomical locations by adapting to different tissue orientations.
2Reliability
If the clip arms are designed to open and close freely, then the operation is simple, but the closed state cannot be maintained stably
Solution Approach 1:
The tube-shaped member is pre-configured with a locking mechanism that prevents the clip arms from opening once closed. The pressing member is stored within the tube-shaped member and is positioned to apply preliminary counter-action force to maintain the closed state of the clip arms, preventing accidental opening during the procedure.
Solution Approach 2:
The pressing member acts as an intermediary element between the clip arms and the tube-shaped member. It transmits and maintains the closing force, ensuring stable hemostasis by preventing claw disengagement. The pressing member can be released when reopening is needed, providing controlled intervention in the locking mechanism.
3Adaptability or versatility
If the clip is designed for single-use, then the structure is simple, but it cannot allow re-grasping when needed
Solution Approach 1:
The clip design incorporates dynamic elements that allow transition between closed and open states. The asymmetric arms with directional claws and anchors provide stable closure when needed, while the pressing member can be released to allow reopening for re-grasping. This dynamic capability enhances adaptability during endoscopic procedures without requiring a completely new device.
Data Source
AI summary
A clip unit includes: a clip having a first arm and a second arm that are capable of opening and closing toward a distal end side; and a tube-shaped member capable of storing at least a part of the clip, in which the first arm has a first claw that extends to a closing side in an opening/closing direction at a distal end, and the first claw has a first anchor.