Repositionable Over-the-Scope Clip With Visual Deployment
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Solution Overview
Problem
Current endoscopic closure devices, particularly over-the-scope clips, are difficult to use, time-consuming, and often insufficient for certain perforations or anatomies, as they require deployment without direct visualization and cannot be easily repositioned.
Innovation Solution
A clipping system with an adapter and clip design that allows for initial placement viewing and adjustment, featuring movable jaws and extending members that enable the clip to transition between insertion, initial deployed, review, and final deployed configurations, facilitating enhanced visual observation and repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If current over-the-scope clips are deployed without direct visualization, then the deployment process is simplified, but the operator cannot see the clip until it is deployed, making positioning difficult and irreversible
Solution Approach 1:
The clip is designed to be dynamically repositionable between an inserted state (where it is not visible) and a review state (where it is visible through the endoscope). The extending member allows the clip to be moved distally to engage tissue and then proximally to be visualized, providing dynamic adaptability in the deployment process.
Solution Approach 2:
The extending member acts as an intermediary between the operator and the clip. It allows the operator to manipulate the clip's position without directly seeing the clip itself, using the endoscope's visualization system as an intermediary to observe the clip's location through tissue engagement rather than direct view.
2Device complexity
If the clip is deployed without repositioning capability, then the device structure is simplified, but the clip cannot be adjusted if misplaced, reducing reliability
Solution Approach 1:
The clip transitions from a static, fixed-position device to a dynamic, repositionable device. The extending member enables the clip to be moved between states, allowing adjustment if initially misplaced while maintaining a relatively simple overall structure without complex mechanical repositioning mechanisms.
3Difficulty of detecting and measuring
If the clip is pulled proximally to be visualized, then the operator can see the clip for review, but the clip must be forced open against its bias, requiring additional force
Solution Approach 1:
The adapter is designed with a tapered distal end that preliminarily guides and facilitates the clip's movement. When the extending member is pulled proximally, the tapered adapter surface already prepares the path for the clip to move and open against its bias, reducing the additional force required compared to a non-tapered design.
Data Source
AI summary
A clipping system includes an adapter, a clip and an extending member. The adapter mounted over an insertion device. The clip mounted over the adapter and includes first and second jaws connected to one another such that the jaws are movable between an insertion configuration and an initial deployed configuration. The first jaw includes a keyhole opening. The member coupled to the clip and adapter. The member includes a distal end releasably engaging the opening. The distal end has a width smaller than a width of a first portion of the opening and larger than a second portion of the opening so that, when a portion of the member proximal of the distal end is received within the second portion, the adapter is released from the clip while the member remains coupled to the clip. The member forces the clip open as the clip retracts over the adapter.