Suture Lock Fastening Device with Irreversible Retainer
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Solution Overview
Problem
Existing fastening devices for suture locks in surgical procedures, particularly in endoscopic settings, face challenges in efficiently delivering and securing sutures without the need for knots, which can be cumbersome and require additional tools for knot tying.
Innovation Solution
A suture lock fastening device with an actuation handle and fastening head that supports a suture lock ring and plug, featuring a retainer that irreversibly deforms to release the suture lock upon a predetermined force, allowing for secure suture locking and cutting of the suture, facilitating easy deployment and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a suture lock fastening device is used to secure sutures without knots, then surgical efficiency is improved and knot-tying complexity is reduced, but the device requires additional components (fastening head, retainer, cutter) that increase device complexity
Solution Approach 1:
The patent combines multiple functions (fastening, retaining, cutting) into a single integrated fastening device. The fastening head houses both the retainer for securing the suture lock and the cutter for trimming the suture, eliminating the need for separate knot-tying instruments and improving surgical efficiency despite the increased component integration.
Solution Approach 2:
The fastening device is designed as a multi-functional tool that can deliver, secure, and cut sutures within a single device architecture. The actuation handle controls both the retainer mechanism for locking the suture and the cutter for trimming, allowing one device to perform multiple surgical tasks that would traditionally require separate instruments.
2Reliability
If the retainer is designed to be irreversibly deformed to release the suture lock, then secure retention during fastening is achieved, but the retainer cannot be reused and must be discarded after single use
Solution Approach 1:
The retainer is designed as a disposable component that is irreversibly deformed after use. This ensures reliable and secure retention of the suture lock during the fastening process, while the irreversible deformation prevents reuse. The retainer is discarded after a single use, prioritizing reliability over reusability.
3Ease of operation
If the device is designed for endoscopic procedures with minimal user effort, then ease of operation is improved, but the device requires precise force application to the retainer for release
Solution Approach 1:
The retainer is designed with dynamic properties that allow it to be deformable under a predetermined force for release. This enables the device to be operated with minimal user effort during normal fastening, while the irreversible deformation mechanism ensures that a specific force threshold triggers the release function, providing controlled operation.
4Adaptability or versatility
If the fastening head includes both retainer and cutter components, then complete suture management is achieved, but the chamber space required increases the fastening head volume
Solution Approach 1:
The cutter is positioned within the chamber of the fastening head, nested alongside the retainer mechanism. This nesting arrangement allows both the retainer for securing the suture lock and the cutter for trimming the suture to coexist in a compact configuration, providing complete suture management capability while minimizing the overall volume of the fastening head.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables secure and efficient suture locking with minimal user effort, suitable for endoscopic procedures, and can be used as a standalone device, reducing the complexity of knot tying and enhancing surgical efficiency.
Implementation Method 1
The retainer is constructed and arranged to be irreversibly deformed to release the suture lock from the fastening device.
Implementation Method 2
a cutter with a cutting edge that is constructed and arranged to cut a suture
Data Source
AI summary
A suture lock fastening device to cinch a suture in a suture lock, cut the suture end, and deploy the suture lock in response to a single movement of a user. The fastening device includes a fastening head with a retainer that is configured to hold a suture lock in the fastening head. To release the suture lock from the fastening head, the retainer is irreversibly deformed. The fastening device may include an axially movable cutter with a cutting edge to sever the ends of the suture close to the suture lock. A threading device may be preloaded into the fastening device to facilitate threading the suture through the fastening device.