3D Inguinal Hernia Prosthesis for Tension-Free Anatomical Fit
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Solution Overview
Problem
Existing prostheses for inguinal hernia repair struggle to efficiently conform to the complex, oblique anatomy of the inguinal region, particularly the medial inferior area, requiring surgeons to apply tension or create folds during deployment, which can interfere with surrounding organs.
Innovation Solution
A preformed three-dimensional prosthesis with specific portions designed to conform to the inguinal region's anatomy, including a partial spherical cap, wavy-shaped wall, and arched part, allowing seamless deployment without tension or folds, and featuring a reinforcement member for ease of handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If existing prostheses are deployed in the inguinal region, then hernia repair is achieved, but the prosthesis requires tension or folds to conform to the complex anatomy, which can interfere with surrounding organs
Solution Approach 1:
The prosthesis is pre-formed with a three-dimensional shape that anticipates the anatomical contours of the inguinal region. The medial inferior corner is pre-configured with an arched part that extends in specific directions to match the pubic bone and iliac vessels anatomy, eliminating the need for intraoperative shaping and preventing organ interference
Solution Approach 2:
The prosthesis incorporates curved surfaces including a partial spherical cap for the anterior abdominal wall, a wavy-shaped wall for the psoas muscle, and an arched part for the medial inferior area. These curved geometries naturally conform to the organic shapes of underlying anatomical structures without requiring tension or folds
2Ease of operation
If a preformed three-dimensional prosthesis is used, then deployment without tension or folds is achieved, but the prosthesis requires specific complex shapes to match individual patient anatomy
Solution Approach 1:
Different portions of the prosthesis have locally optimized geometries: a partial spherical cap for the anterior abdominal wall, a wavy-shaped wall for the psoas muscle, and an arched part for the medial inferior area. Each local region is shaped to match its specific anatomical target, allowing the entire prosthesis to be deployed as a single pre-formed unit without tension or folds
Data Source
AI summary
A prosthesis includes a piece of biocompatible material having a preformed three-dimensional shape including: a first portion forming a partial spherical cap surface, shaped and dimensioned so as to substantially conform to the shape of the anterior abdominal wall; a second portion extending from an inferior edge of the first portion and forming a wavy-shaped wall, shaped and dimensioned so as to substantially conform to the shape of the psoas muscle; and a corner portion extending from the first portion.