Repositionable Over-the-Scope Clip With Frangible Release Link
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Solution Overview
Problem
Current endoscopic closure devices, particularly over-the-scope clips, are difficult to use, time-consuming, and insufficient for certain perforations and anatomies due to the inability to reposition the clip after deployment, as they are deployed without direct visibility and cannot be easily adjusted.
Innovation Solution
A clipping system with an adapter, clip, and extending members that allow for visual observation and adjustment of the clip position before final deployment, featuring a frangible link that breaks at a predetermined threshold force to release the clip from the system, enabling repositioning and final deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current over-the-scope clips are deployed without direct visibility, then the deployment process is simpler, but the precision of clip placement and ability to observe deployment is poor
Solution Approach 1:
The adapter serves as an intermediary component between the endoscope and the clip. It provides a platform that allows the clip to be positioned and deployed with direct visual observation through the endoscope, while maintaining a relatively simple overall device structure. The adapter's distal portion receives the clip and enables controlled deployment.
Solution Approach 2:
The clip includes extending members with frangible links that enable self-adjustment and self-verification of deployment. The frangible links automatically break when the clip is properly deployed, providing visual confirmation without requiring additional complex mechanisms. The clip can also be repositioned by manipulating the extending members before final deployment.
2Adaptability or versatility
If current over-the-scope clips cannot be repositioned after deployment, then the device structure is simpler, but the adaptability to correct positioning errors is poor
Solution Approach 1:
The clip transitions from a static, permanently deployed state to a dynamic, repositionable state through the extending members. Before final deployment, the clip can be moved back and forth along the adapter by manipulating the extending members, allowing correction of positioning errors. The frangible links maintain the clip in position once properly deployed.
Solution Approach 2:
The clip is segmented into movable components including the extending members with frangible links. This segmentation allows the main body of the clip to remain anchored while the extending members can be manipulated independently for repositioning or adjustment, providing flexibility without requiring complete device replacement.
3Reliability
If current over-the-scope clips are deployed in a single step without visibility, then the operation is faster, but the reliability of proper closure is poor
Solution Approach 1:
The system allows preliminary positioning and verification of clip placement before final deployment. The operator can visually confirm the clip's position relative to the tissue defect through the endoscope, make adjustments if needed, and only then proceed to final deployment by breaking the frangible links. This preliminary action phase ensures proper placement while maintaining overall procedural efficiency.
Solution Approach 2:
The frangible links provide visual feedback during deployment. When the links break, it confirms that the clip has been properly deployed and is functioning correctly. This immediate feedback mechanism allows the operator to verify successful closure without requiring additional verification steps, maintaining procedural speed while ensuring reliability.
Data Source
AI summary
A clipping system includes an adapter, a clip and a first extending member. The clip includes first and second jaws which are movable between an insertion configuration and an initial deployed configuration. The jaws are biased toward the initial configuration. The first member is releasably coupled to the clip and movably connected to the adapter. The first member includes a distal end releasably coupled to the first jaw such that longitudinal movement of the first member relative to the adapter moves the clip between the insertion configuration, the initial configuration and a review configuration. The first member is operable to retract the clip proximally over the adapter so that the clip is forced open as the clip is retracted over the adapter. A first releasable link connects the first member to the clip and releases when the first member is subject to a force exceeding a predetermined threshold value.