Arcuate Suture Ring Closure Device for Large Tissue Defects
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Solution Overview
Problem
Existing endoscopic devices struggle to effectively close large defects or wounds that are too large for hemostasis clips to bridge, such as those resulting from treatments like lesion removal, full thickness tissue removal, and post-surgical issues, lacking efficient suturing solutions.
Innovation Solution
A suture device with a mounting structure connectable to an endoscope, featuring a suture ring with arcuate channels and sliding needle passers, a suture shuttle, and control elements for precise tissue suturing without requiring additional tissue acquisition tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If hemostasis clips are used to close defects, then small defects can be closed easily, but large defects cannot be effectively closed
Solution Approach 1:
The suturing device is divided into multiple functional components: a suture ring with arcuate channels, multiple needle passers (first, second, third, fourth), and a suture shuttle. Each component has a specific function, allowing the system to handle large defects through coordinated action of segmented elements rather than a single complex mechanism.
Solution Approach 2:
The needle passers are slidingly disposed within the arcuate channels of the suture ring, creating a nested configuration. The suture shuttle is captured by the needle passers and moved through the tissue defect. This nesting allows compact storage and controlled deployment of suture materials within the endoscopic device.
2Reliability
If multiple tools are used for suturing large defects, then closure effectiveness improves, but procedural complexity increases
Solution Approach 1:
Multiple needle passers (first, second, third, fourth) are integrated into a single suture ring structure, combining what would traditionally require multiple separate tools into one unified device. The suture shuttle serves as a common carrier for all needle passers, allowing a single operator to control all suturing actions through one device platform.
Solution Approach 2:
The suture ring with arcuate channels serves multiple functions: it guides multiple needle passers, captures the suture shuttle, and provides structural support. The needle passers can all capture and move the same suture shuttle, making the system versatile for different suturing configurations and defect types.
3Productivity
If traditional suturing methods are used for large defects, then adequate tissue bridging is achieved, but procedural time increases
Solution Approach 1:
The suture shuttle is pre-loaded with suture material and can be captured by any of the needle passers before tissue engagement. The arcuate channels are pre-configured to guide the needle passers along optimal paths. This preliminary preparation allows rapid deployment and reduces procedural time during actual suturing.
Solution Approach 2:
The arcuate channels provide continuous guidance paths for the needle passers, allowing smooth, uninterrupted movement through the tissue defect. The suture shuttle can be continuously moved back and forth between needle passers without requiring device repositioning or tool changes, maintaining continuous useful action throughout the suturing process.
Data Source
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AI summary
A medical device includes a suture ring that defines an arcuate channel extending therein. A first arcuate needle passer is slidingly disposed within a first side of the arcuate channel and a second arcuate needle passer is slidingly disposed within a second side of the arcuate channel. A suture shuttle is passable between the first arcuate needle passer and the second arcuate needle passer and is configured to be releasably securable to the first arcuate needle passer and to the second arcuate needle passer.