Modular Tibial Baseplate with Intercondylar Bridge for Arthroplasty
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Solution Overview
Problem
Current knee replacement systems require different instrumentation sets and implant components for various types of arthroplasties, leading to inefficiencies in material usage, cost, and storage, as well as the need for multiple components for each procedure, which is not ideal for partial or salvage arthroplasties.
Innovation Solution
A universal knee replacement system comprising modular tibial and femoral components with interchangeable coupling portions, such as conical posts and tapered receptacles, allowing for adaptation to different arthroplasties from partial to salvage procedures, including intercondylar bridge members and inserts for enhanced stability and bone conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different instrumentation sets and implant components are used for each type of arthroplasty, then the specific functional requirements for each procedure are met, but material waste, costs, and storage needs increase
Solution Approach 1:
The tibial baseplate is designed with multiple coupling portions (anterior, posterior, medial, lateral) that can selectively receive different inserts (condylar, patellar, femoral, tibial) to accommodate various arthroplasty types including partial, total, and salvage procedures. This universal design allows a single baseplate to perform multiple functions that traditionally required different specialized components.
Solution Approach 2:
The implant system is divided into modular components: a universal tibial baseplate and interchangeable inserts. Each insert represents a separate functional module that can be selectively attached to the baseplate. This segmentation allows surgeons to configure the appropriate combination for each specific procedure while using the same baseplate, reducing overall material waste.
2Reliability
If different instrumentation sets and implant components are used for each type of arthroplasty, then the specific functional requirements for each procedure are met, but costs and storage needs increase
Solution Approach 1:
A single tibial baseplate with four coupling portions can accommodate multiple arthroplasty types by selectively attaching different inserts, eliminating the need for multiple specialized baseplates. This reduces the quantity of components from several different baseplate types to one universal baseplate plus a smaller set of interchangeable inserts.
Solution Approach 2:
The patent combines multiple functional capabilities into a single tibial baseplate structure. The anterior, posterior, medial, and lateral coupling portions are integrated into one component, allowing it to serve as the foundation for various arthroplasty configurations. This merging reduces the total number of components needed in the system.
3Adaptability or versatility
If traditional knee replacement systems use separate components for each arthroplasty type, then procedural specificity is achieved, but surgical flexibility and resource utilization decrease
Solution Approach 1:
The system segments the arthroplasty configuration into a universal baseplate and selectable inserts. This segmentation provides surgical flexibility by allowing surgeons to choose the appropriate insert combination for each procedure while maintaining a manageable system complexity through standardization of the baseplate interface.
Solution Approach 2:
The implant system is designed to be dynamically configurable during surgery. The coupling portions allow for selective attachment of different inserts based on the specific arthroplasty requirements, enabling the system to adapt to various procedural needs without requiring multiple fixed-design components.
Data Source
AI summary
A knee replacement system including a first tibial baseplate, a second tibial baseplate, and an intercondylar bridge member. Each one of the first and second tibial baseplates includes a bone engaging surface and a bearing engaging surface opposite to the bone engaging surface. Each one of the first and second tibial baseplates also includes a first baseplate coupling portion and a second baseplate coupling portion. The first baseplate coupling portion is configured to couple with the intercondylar bridge member for coupling the second tibial baseplate to the first tibial baseplate. The second baseplate coupling portion is configured to couple an insert to the first and second tibial baseplates.