Looped Tissue Compression With Adjustable Cinch Force Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing medical devices for applying compressive forces around tissue lack variability in loop size adjustment, require additional components for maintaining loop position, and often lack the ability to adjust compressive force once applied.
Innovation Solution
A system comprising a delivery device and a compression device with a flexible compressive element and a cinch device that allows for adjustable loop sizing and force application, featuring a proximally-extending portion for external manipulation and a cinch mechanism to secure the desired compressive force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If commercially available loop devices are used, then tissue compression is achieved, but loop size variability is limited
Solution Approach 1:
The loop device incorporates a dynamic adjustment mechanism that allows the loop size to be changed after deployment. The free end of the loop can be pulled to tighten or loosened to expand the loop circumference, providing adaptability without requiring multiple fixed-size devices. This resolves the contradiction by enabling size variability while maintaining a single device structure.
Solution Approach 2:
The loop device is divided into distinct functional segments: a delivery portion for initial placement, a loop portion that encircles the tissue, and a free end for adjustment. This segmentation allows each part to perform its specific function independently, enabling size adjustment through manipulation of the free end while keeping the overall device structure manageable.
2Adaptability or versatility
If one-way tightening devices are used, then compression force is applied, but readjustment capability is lost
Solution Approach 1:
The device transitions from a static one-way tightening mechanism to a dynamic two-way adjustment system. The loop can be tightened by pulling the free end and loosened by releasing or pushing the free end back, allowing continuous adjustment of compressive force throughout the procedure. This enables clinicians to optimize compression levels based on tissue response without requiring device replacement.
3Reliability
If additional components like tissue clips are used, then loop position is maintained, but device complexity increases
Solution Approach 1:
The delivery mechanism and loop structure are merged into a single integrated device. The loop is delivered through a catheter or delivery system that maintains its position during deployment, eliminating the need for separate tissue clips or additional anchoring components. The loop itself is designed to maintain stability through its configuration and the mechanical properties of the material.
4Device complexity
If simplified tools like nylon string are used, then device complexity is reduced, but guidance and position maintenance become challenging
Solution Approach 1:
A delivery catheter or delivery system acts as an intermediary between the simple loop structure and the tissue target. This intermediary provides guidance during insertion, maintains loop position during deployment, and facilitates precise placement without requiring the loop itself to be complex. The delivery system can be withdrawn after loop deployment, leaving the simple but effective loop in place.
Data Source
AI summary
A compression device having an elongated compressive element which can be looped into and adjusted to different desirable sizes around target tissue. The compressive element may be a simple suture string or the like having a distal portion looped around the target tissue and extending to a proximal end positioned outside the patient's body and graspable and manipulable by a medical professional to adjust the looped distal portion. A cinch device may be preloaded on and delivered with the compressive element to target tissue. The cinch device may be coupled with the compressive element in a manner which may facilitate maintenance of the looped configuration of the distal portion of the compressive element and/or to hold the distal portion of the compressive element in a final looped configuration applying the desired compressive force to the target tissue surrounded by the compressive element.