Nitinol Rim-and-Wire Loop for Nonpenetrating Tissue Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current endoscopic tools lack a dedicated design for efficiently removing necrotic tissue from body cavities, leading to inefficiencies in procedures like transoral/transmural endoscopic drainage or debridement.
Innovation Solution
A medical device featuring a rim with a loop and a wire configuration, made of Nitinol, which can flex and extend/retract to capture and remove tissue, with a sheath for control, allowing for precise tissue removal without penetration or clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If standard tools are used for endoscopic necrosectomy, then the procedure can be performed, but the efficiency is limited due to lack of dedicated design
Solution Approach 1:
The device divides the tissue removal function into distinct components: a rim for capturing tissue, wires for structural support and manipulation, and a sheath for controlled deployment. This segmentation allows each component to be optimized for its specific function, improving overall efficiency.
Solution Approach 2:
The rim acts as an intermediary tool between the endoscope and the necrotic tissue, providing a dedicated interface for tissue capture and removal. This specialized intermediary component enables more efficient tissue removal compared to using standard general-purpose tools.
2Productivity
If tools are used that can penetrate tissue, then tissue removal is possible, but penetration risk increases
Solution Approach 1:
The rim is designed as a flexible, thin-walled structure that can capture and contain tissue without penetrating it. The flexible material allows the rim to conform to tissue surfaces and securely hold tissue fragments for removal, eliminating the penetration risk associated with rigid or sharp instruments.
3Productivity
If tools are used that can capture tissue, then tissue removal is enabled, but clogging may occur
Solution Approach 1:
The rim incorporates a porous or mesh-like structure that allows tissue to be captured and held securely while permitting fluid passage. This porous design prevents clogging by allowing fluids to flow through the structure while maintaining tissue containment, ensuring reliable and continuous operation.
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 efficient and safe removal of necrotic tissue by minimizing penetration risk and preventing clogging, facilitating effective drainage and debridement procedures.
Implementation Method 1
a rim defining a loop in a plane and defining a width measured perpendicular to the plane, at least one wire coupled to a distal end of the rim and extending proximally from the distal end out of the plane to a proximal end of the rim
Implementation Method 2
The rim may be a Nitinol ribbon. The rim may be capable of flexing at least 90° relative to the sheath.
Data Source
AI summary
A medical device that comprises a rim defining a loop in a plane and defining a width measured perpendicular to the plane, at least one wire coupled to a distal end of the rim and extending proximally from the distal end out of the plane to a proximal end of the rim, the at least one wire having a cross-sectional dimension measured perpendicular to a longitudinal axis of the at least one wire, the cross-sectional dimension being smaller than the width of the rim, and a sheath configured to cover at least a portion of the rim and a portion of the at least one wire.