Implantable Prosthesis With Tapered Margin For Stress Reduction
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Solution Overview
Problem
Traditional implantable prostheses for soft tissue repair often limit tissue mobility and can create high stress interfaces with native tissue, hindering effective integration and repair.
Innovation Solution
The implantable prosthesis features a body with a tissue infiltratable portion that decreases in thickness from the inner portion side towards the outer peripheral edge, promoting increased strain rates and reducing high stress interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a uniform thickness prosthesis is used, then structural strength is maintained, but tissue mobility is limited and high stress interfaces are created
Solution Approach 1:
The prosthesis employs varying thickness across different regions: a thicker inner portion for structural support and reinforcement at the defect site, and a thinner outer margin for flexibility and tissue integration. This local differentiation allows each region to perform its specific function optimally without creating harmful stress interfaces.
Solution Approach 2:
The prosthesis is divided into distinct functional zones: an inner portion with greater thickness for strength and an outer margin with lesser thickness for mobility. This segmentation allows the device to simultaneously provide structural reinforcement where needed while maintaining tissue compatibility at the periphery.
2Strength
If a thicker prosthesis is used, then structural strength is improved, but tissue integration is hindered due to limited mobility
Solution Approach 1:
Different thicknesses are applied to different regions: the inner portion maintains greater thickness for strength while the outer margin uses lesser thickness to promote tissue integration and mobility, resolving the contradiction between structural requirements and biological integration.
3Ease of operation
If a thinner prosthesis is used, then tissue mobility is improved, but structural strength at the defect site is reduced
Solution Approach 1:
The prosthesis concentrates its thickness where structural strength is most needed (inner portion covering the defect) and reduces thickness where flexibility and tissue mobility are priorities (outer margin), thereby satisfying both mechanical and biological requirements.
Data Source
AI summary
An implantable prosthesis and a method of repairing an anatomical defect, such as a soft tissue defect, by promoting tissue growth with the prosthetic. The prosthesis includes a body with an inner portion and an outer margin that extends outwardly beyond the inner portion, the outer margin including an inner portion side and an outer peripheral edge. The outer margin includes a tissue infiltratable portion, such as a tissue infiltratable layer, having a thickness that decreases from the inner portion side towards the outer peripheral edge.