Muscular-Level Tissue Repair Device for Controlled Deep Grasping
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Solution Overview
Problem
Existing endoscopic closure devices are inadequate for repairing defects at the muscular layer of gastrointestinal tissue, as Through-The-Scope clips are limited to superficial closure and Over-The-Scope-Clips are difficult to use effectively.
Innovation Solution
A tissue repair device with a tissue-penetrating arm and a tissue-grasping arm, capable of penetrating and grasping muscular tissue layers, allowing controlled closure of defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Through-The-Scope clips are used for tissue closure, then the device is easy to use, but the closure is limited to superficial levels and cannot reach the muscular layer
Solution Approach 1:
The device is divided into separate functional arms: a tissue-penetrating arm with a needle for deep insertion and a tissue-grasping arm for closure. This segmentation allows each component to be optimized for its specific function while working together to achieve both deep penetration and ease of operation
Solution Approach 2:
The tissue-penetrating and tissue-grasping arms are nested within a delivery catheter during insertion, allowing the device to pass through the scope easily. Upon deployment, the arms extend from the catheter to perform their functions, combining the benefits of easy delivery with deep tissue access
2Length of moving object
If Over-The-Scope-Clips are used for deep tissue closure, then the device can reach the muscular layer, but the device is harder to use and provides less controlled actuation
Solution Approach 1:
The device employs dynamic actuation mechanisms that allow controlled movement of the tissue-penetrating and tissue-grasping arms. The operator can control the extension, positioning, and actuation of each arm independently, providing precise control for deep tissue closure while maintaining ease of operation through intuitive control mechanisms
3Device complexity
If a single clip design is used for both superficial and deep closure, then the device structure is simple, but the device cannot provide controlled actuation for deep muscular layer closure
Solution Approach 1:
The device is segmented into distinct functional arms (tissue-penetrating arm and tissue-grasping arm) that can be independently controlled. This segmentation enables controlled actuation for deep muscular layer closure while maintaining a relatively simple overall structure that can be delivered through standard endoscopic equipment
Solution Approach 2:
The device combines multiple functions in a single integrated system: the tissue-penetrating arm performs deep insertion, the tissue-grasping arm performs closure, and both can be controlled from the proximal end. This multi-functionality provides controlled actuation for deep closure without requiring multiple separate devices
Data Source
AI summary
A tissue repair device, system, and method for grasping tissue, such as to repair the tissue (e.g., a defect in tissue), by anchoring a tissue-penetrating arm along a first location along the tissue, moving the anchored tissue-penetrating arm to a second location along the tissue, and grasping tissue at the second location with a tissue-grasping arm. The tissue-penetrating arm remains in a substantially axial straight configuration to facilitate tissue penetration. The tissue-grasping arm is movable towards and away from the tissue-penetrating arm to grasp tissue and hold the grasped tissue between the tissue-grasping arm and the tissue-penetrating arm. The tissue repair device may be left in place holding the tissue in the grasped configuration.