Hook-Shaped Cutting Element for Controlled Tissue Avulsion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cutting devices are inadequate for efficiently creating avulsions in biological tissues and cutting non-biological materials, lacking the necessary precision and control for various medical and industrial applications.
Innovation Solution
A cutting device with a coiled main body forming a loop and a hook-shaped distal end, featuring a single or dual sharpened edges and a unique cross-sectional shape, providing controlled cutting capabilities through a combination of notch and edge geometry, suitable for both biological and non-biological materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional cutting devices are used, then basic cutting function is provided, but precision and control for creating avulsions and cutting various materials are insufficient
Solution Approach 1:
The cutting device is segmented into distinct functional components: a flexible delivery catheter for navigation and deployment, and a separate cutting element (wire or balloon-mounted blade) that can be independently positioned and activated. This segmentation allows the cutting function to be precisely controlled while keeping the delivery system relatively simple.
Solution Approach 2:
The cutting element features localized sharpened edges or blade segments at specific positions along its length, rather than being uniformly sharp throughout. This local quality concentration provides precise cutting control at the target site while maintaining structural integrity and simplicity of the overall device.
2Adaptability or versatility
If a single cutting device is designed to handle multiple materials (biological and non-biological), then versatility is improved, but device design complexity increases
Solution Approach 1:
The cutting device is designed with a universal cutting mechanism that can effectively cut both biological tissues (via avulsion or slicing) and non-biological materials (sutures, sheaths). The cutting element can be configured with different edge geometries or blade materials to handle diverse material types, making the device versatile without requiring multiple specialized tools.
Solution Approach 2:
The cutting device incorporates dynamic adjustment capabilities, allowing the cutting element's position, orientation, and activation timing to be adjusted based on the specific material being cut. This dynamic adaptability enables the same device structure to effectively handle various materials by changing operational parameters rather than requiring different device designs.
3Manufacturing precision
If controlled cutting capabilities are enhanced through geometric features, then cutting precision is improved, but fabrication requirements increase
Solution Approach 1:
The cutting element is pre-formed during manufacturing with the required geometric features (sharpened edges, blade angles, cross-sectional shapes) so that these precision features are built-in rather than requiring complex post-manufacturing adjustments or assemblies. This preliminary formation of critical geometries simplifies the overall manufacturing process while maintaining high cutting precision.
Data Source
AI summary
Cutting devices useful for cutting objects or materials are described. Examples of cutting devices useful for creating avulsions in animals, such as human beings, are described. A cutting device includes an elongate main body having proximal and distal ends. A first portion of the main body has a cross-sectional shape that substantially lacks flat surfaces and a second portion of the main body has a cross-sectional shape having one, two or more flat surfaces. The distal end defines a hook having one or more sharpened edges disposed within the notch of the hook. Methods of making cutting devices are also described.