Suture Locking Device for Minimally Invasive Vessel Closure
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Solution Overview
Problem
Existing vascular closure devices are complex, invasive, and often enlarge the vessel opening, making them difficult to use and less effective for closing vessel walls after medical procedures.
Innovation Solution
A suture locking device with a hollow carrier member, locking assembly, suture path, cutter assembly, and actuator assembly that locks and cuts the suture in place to approximate tissue around the vessel opening, minimizing invasiveness and simplifying the closure process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If prior closure devices are used to close the vessel opening, then the vessel opening can be closed, but the devices are relatively complicated and difficult to use
Solution Approach 1:
The device is divided into distinct functional modules: a hollow carrier member for containing the suture, a locking assembly with first and second locking members for securing the suture, and a cutter assembly for trimming the suture. This segmentation allows each component to perform its specific function independently, simplifying the overall operation while maintaining effectiveness.
Solution Approach 2:
The hollow carrier member serves multiple functions: it contains the suture during insertion, provides a pathway for the suture to pass through, and acts as a guide for the locking and cutting operations. This multi-functionality reduces the need for separate components, thereby simplifying the device structure and ease of use.
2Ease of manufacture
If prior suturing devices are used to approximate tissue, then tissue can be approximated, but the methods and devices are relatively complicated
Solution Approach 1:
The locking and cutting functions are merged into a single integrated assembly that operates together. The locking members and cutter are positioned within the same carrier member, allowing the physician to perform both tissue approximation and suture trimming in one continuous motion, thereby simplifying the surgical procedure.
Solution Approach 2:
The suture is pre-loaded into the hollow carrier member before the procedure. This preliminary preparation eliminates the need for the physician to manually thread the suture through multiple components during surgery, significantly simplifying the procedure and reducing surgical time.
3Object-affected harmful factors
If prior closure devices are used, then the vessel opening can be closed, but the devices enlarge the vessel opening thereby negating the benefits of using smaller or less invasive percutaneous products
Solution Approach 1:
The locking assembly and cutter assembly are nested within the hollow carrier member during insertion. This nested configuration allows the entire device to pass through a small percutaneous access point without enlarging the vessel opening. Once in position, the assemblies are deployed to perform their functions while maintaining the minimally invasive benefit.
Data Source
AI summary
A suture locking device includes a suture locking assembly, a suture cutting member, and an actuator assembly. The actuator assembly includes a first actuator operable longitudinally to lock the suture with the suture locking assembly, and a second actuator operable laterally to concurrently cut the suture with the suture cutting member and disconnect the suture locking assembly from the suture locking device.