Modular Prosthesis Stem Removal Features for Smaller Incisions
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Solution Overview
Problem
Current medical prostheses require larger incisions for installation and removal, which can complicate recovery and increase surgical site complications due to the complexity of coupling and decoupling multiple components.
Innovation Solution
The development of a prosthesis stem system with modular components featuring a body with a male coupling element at one end and a female coupling element at the other, along with engagement elements along the length for torque application, allowing for minimally invasive coupling and decoupling through the use of torquing instruments, facilitating both assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If modular components with coupling elements are used, then the implant size and incision size are reduced, but the complexity of coupling and decoupling multiple components increases
Solution Approach 1:
The prosthesis stem is divided into multiple modular components (first component, second component, third component) that can be independently inserted and coupled. Each component has specific coupling elements (male and female coupling elements) that enable modular assembly, allowing the overall implant size to be reduced while maintaining functionality through segmented design.
Solution Approach 2:
The coupling elements are designed with nested structures where male coupling elements extend from one component and engage with female coupling elements of adjacent components. The engagement elements are disposed between coupling elements and peripheral edges, creating a nested arrangement that simplifies the coupling mechanism while enabling modular assembly through sequential insertion.
2Strength
If engagement elements are disposed between coupling elements and peripheral edges, then structural integrity is maintained, but the difficulty of detecting and measuring engagement increases
Solution Approach 1:
Engagement elements are strategically positioned at specific locations between coupling elements and peripheral edges of the body. This local placement ensures structural integrity is maintained at critical stress points while keeping the overall design simple. The engagement elements provide localized reinforcement without requiring complex detection mechanisms throughout the entire structure.
Data Source
AI summary
An apparatus may include a body extending from a first end to a second end. The first end of the body may include a first coupling element, and the second end of the body may include a second coupling element. The second end of the body may include a first engagement element that extends inwardly into the body and may be disposed between a peripheral edge of the body and the second coupling element. Methods are also disclosed.