Customizable Humeral Implant Adapter for Patient-Specific Offset
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current shoulder replacement surgeries face challenges in optimally positioning and fixing prosthetic implants due to variations in patient anatomy and bone wear, leading to complications such as subluxation, dislocation, and implant loosening, which are not adequately addressed by existing implant designs and methodologies.
Innovation Solution
A humeral prosthetic implant system comprising a proximal cup and distal stem portion, with a customizable adapter to achieve a desired offset and angle based on patient-specific analysis of humeral diaphysis and metaphysis offset, allowing for precise positioning and fixation of the implant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the replacement prosthesis is positioned to counteract subluxation and dislocation risks, then joint stability is improved, but separation forces between implant and bone increase leading to implant loosening
Solution Approach 1:
The prosthesis design incorporates dynamic adjustment capabilities allowing the implant position and orientation to be optimized post-implantation. The adjustable mechanism enables balancing between joint stability and fixation strength by modifying the prosthesis configuration to match patient-specific anatomy and functional requirements.
Solution Approach 2:
The invention utilizes parameter changes in prosthesis design including variable offset distances, angular orientations, and component geometries. By adjusting these parameters based on preoperative planning and intraoperative assessment, the system optimizes both joint stability and implant fixation strength for each patient.
2Ease of manufacture
If standard implant designs are used, then manufacturing and surgical procedure are simplified, but they cannot adequately account for variations in patient anatomy and bone wear leading to suboptimal positioning
Solution Approach 1:
The prosthesis system is divided into modular components that can be independently manufactured using standard processes. These segments include adjustable elements, connection interfaces, and positioning features that allow customization during assembly while maintaining manufacturing simplicity through standardized production of individual parts.
Solution Approach 2:
The invention employs universal prosthesis designs with multi-functional features that can accommodate various patient anatomies and pathological conditions. The standardized components are designed to perform multiple functions including positioning, stabilization, and adaptation to different bone geometries, thereby achieving both manufacturing simplicity and positioning precision.
3Ease of operation
If the glenoid orientation is altered to improve shoulder function and pain relief, then joint function is improved, but separation forces increase causing accelerated implant wear and bone erosion
Solution Approach 1:
The system performs preoperative planning using imaging and computational tools to predict optimal prosthesis positioning that balances joint function improvement with minimization of separation forces. By calculating and planning the implant orientation beforehand, the surgeon can achieve improved shoulder function while avoiding positions that would accelerate wear or cause bone erosion.
Solution Approach 2:
The invention incorporates feedback mechanisms through intraoperative assessment tools and imaging that allow real-time evaluation of prosthesis positioning and joint function. This feedback enables adjustment of implant orientation to optimize shoulder function while monitoring and controlling separation forces to prevent accelerated wear and bone erosion.
Data Source
AI summary
Humeral prosthetic implants, systems, kits and methods of forming and using the humeral prosthetic implants, systems and kits are disclosed. The humeral prosthetic implants include proximal cup portions and distal stem portions, wherein the proximal cup portion is joined to the distal stem portion at a desired offset and/or angle configured based on an analysis of the humeral diaphysis and/or metaphysis offset in a patient. The humeral prosthetic implants may also include an adapter configured to join the proximal cup component with the stem component, wherein the adapter is configured to join the stem component to the stemless cup at a desired offset and/or angle.