Suture Cinching Device with Integrated Cutter
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Solution Overview
Problem
Current medical devices for cinching and cutting sutures lack efficient and secure mechanisms for maintaining sutures in challenging anatomical sites, such as the GI tract and heart, where sutures may easily come undone.
Innovation Solution
A medical device comprising a coupler, sleeve, cutter, and wire system that allows for cinching and cutting of sutures through a suture cinching member and cutter assembly, enabling secure suture termination with a cinch mechanism that maintains the suture without easily coming undone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional suture securing device is used, then the device structure is simple, but the suture may easily come undone in challenging anatomical sites
Solution Approach 1:
The patent combines multiple functions into a single integrated device: the cinching member for securing the suture, the cutter for trimming the suture, and the delivery system for implantation. This merging of functions provides reliable suture security while maintaining manageable device complexity through integrated design.
Solution Approach 2:
The cutter is disposed within the sleeve, and the suture cinching member is moveable within the sleeve lumen. This nested arrangement allows the device to maintain a compact profile during delivery while providing full functionality during operation, resolving the contradiction between reliability and complexity.
2Stability of the object's composition
If a cinching mechanism is added to secure sutures, then suture stability is improved, but the device complexity increases
Solution Approach 1:
The suture cinching member is designed to be self-securing through friction engagement with the sleeve and the cinching action on the suture. The wire-driven mechanism provides automatic cinching without requiring additional actuation steps, improving suture stability while minimizing the complexity of control systems.
3Productivity
If a cutter is integrated into the cinching device, then suture termination is more efficient, but the device structure becomes more complex
Solution Approach 1:
The cutter is integrated with the suture cinching member, allowing both cinching and cutting functions to be performed in a single device. This merging eliminates the need for separate cutting instruments, improving surgical efficiency while maintaining manageable device complexity through functional integration.
4Manufacturing precision
If the suture cinching member is moved into the sleeve to cinch the suture, then the cinching action is more precise, but the risk of crimping or damage increases
Solution Approach 1:
The sleeve is designed with specific structural features including an open-ended configuration and internal geometry that provides a controlled cinching environment. This localized structural design ensures precise cinching action while preventing crimping or damage to the suture through carefully engineered clearances and support surfaces.
Data Source
AI summary
Medical devices for cinch and cutting one or more suture, and methods for making and using such devices are disclosed. An example medical device may include a coupler, a sleeve releasably coupled to the coupler, a cutter slidably disposed within the sleeve, and a suture cinching member movable into and out of the sleeve. A wire may extend through and be longitudinally movable within the coupler to move the suture cinching member and cutter.