Trial Prosthesis Markings for Precise Component Alignment
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Solution Overview
Problem
Current prosthesis implantation procedures lack effective methods for confirming the accurate positioning and orientation of prosthetic components during surgery, relying largely on visual inspection and post-procedure imaging, which can be imprecise.
Innovation Solution
A prosthesis system that includes a trial femoral head member with patient-specific markings to guide the optimal positioning and orientation of femoral and acetabular components, allowing for precise alignment and variance confirmation during the procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual inspection and post-procedure imaging are used to confirm prosthesis positioning, then the procedure is simple and quick, but the measurement precision and reliability of positioning confirmation are insufficient
Solution Approach 1:
The patent introduces an intermediary indicator system consisting of marks on trial prosthesis components and corresponding marks on anatomical landmarks. These intermediary visual indicators serve as mediators between the prosthesis positioning and the surgeon's visual assessment, enabling precise confirmation of positioning without requiring complex imaging equipment during the procedure.
Solution Approach 2:
The patent creates a visual copy or representation of the planned prosthesis positioning by placing indicators on the trial components that correspond to the pre-operative plan. These indicators replicate the intended positioning information in a visually accessible format, allowing the surgeon to verify alignment with the plan directly during surgery.
2Reliability
If trial prosthesis components with indicators are used during the procedure, then positioning confirmation accuracy is improved, but the device complexity and procedure time increase
Solution Approach 1:
The patent applies preliminary action by pre-placing specific indicators and marks on the trial prosthesis components before surgery, and by pre-identifying corresponding anatomical landmarks. This preparation ensures that during the procedure, the surgeon can immediately verify positioning by simple visual comparison without requiring additional measurement steps or equipment setup, thereby maintaining procedural efficiency while improving reliability.
3Manufacturing precision
If standard prosthesis components are used without patient-specific indicators, then the device is simpler and more versatile, but the manufacturing precision and patient-specific alignment accuracy are reduced
Solution Approach 1:
The patent applies local quality by adding patient-specific indicator markings to specific locations on the trial prosthesis components based on that patient's unique anatomy and pre-operative plan. Rather than changing the entire prosthesis design, only specific local features (the indicators and their positions) are customized, maintaining the general versatility of the prosthesis system while achieving patient-specific alignment accuracy.
Data Source
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AI summary
According to various embodiments, a trial system (100) and instruments can be used to assist in confirming that a planned procedure is achieved. In various embodiments, the trial or provisional portions can include markings (110) on a trial or provisional portion to compare to one or more implanted members to ensure an planned position is achieved.