Patella Resection Guide With Jaw Clamping And Drill Alignment
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Solution Overview
Problem
Current orthopaedic surgical instruments lack a comprehensive and efficient solution for accurately preparing the patella for prosthetic implantation, particularly in terms of precise resection and drilling, which can lead to suboptimal alignment and stability of the prosthetic component.
Innovation Solution
The orthopaedic surgical instrument assembly includes a multifunctional handle with a patella resection guide and drill guide, featuring a locking mechanism, lever release mechanism, and clamping elements that allow for precise alignment and secure engagement of the patella, enabling accurate resection and drilling for prosthetic component attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If current orthopaedic surgical instruments are used for patella preparation, then the surgical procedure can be performed, but precise alignment and accurate resection are difficult to achieve
Solution Approach 1:
The surgical instrument is divided into multiple functional modules including a handle assembly, patella clamp, resection guide, and drill guide. Each module performs a specific function and can be selectively attached to the handle, allowing precise control over each surgical step while maintaining overall system manageability
Solution Approach 2:
The handle assembly serves as a universal platform that can accommodate multiple different surgical tools including patella clamps, resection guides, and drill guides. This multi-functional design enables a single instrument system to perform multiple surgical functions with high precision without requiring multiple separate complex instruments
2Reliability
If current surgical instruments are used for patella preparation, then the procedure can be completed, but stable engagement of the patella is difficult to achieve
Solution Approach 1:
The patella clamp incorporates a lever mechanism that allows dynamic adjustment of clamping force. The surgeon can easily operate the lever to engage or disengage the clamp from the patella, providing stable engagement during surgery while maintaining operational simplicity through the mechanical advantage of the lever design
Solution Approach 2:
The patella clamp acts as an intermediary device between the surgeon's manual operation and the patella bone. It translates simple lever movement into reliable clamping action, ensuring stable engagement of the patella while keeping the operation simple for the surgeon
3Measurement precision
If current surgical instruments are used for patella preparation, then basic cutting can be performed, but accurate drilling for prosthetic attachment is difficult to achieve
Solution Approach 1:
The drill guide is designed to be attached to the resection guide before drilling begins. It pre-establishes the exact drilling location and angle based on the previously established resection plane, ensuring accurate drilling for prosthetic attachment without requiring complex real-time measurements during the drilling operation
Data Source
AI summary
An orthopaedic surgical instrument that includes a patella resection guide is disclosed. The patella resection guide includes a body having a substantially planar upper surface that defines a patella cutting guide surface and a first jaw having a first tooth, and a second jaw positioned opposite the first jaw. The second jaw is movable relative to the first jaw and includes a second tooth extending toward the first tooth that defines an axis along which the second jaw is moveable relative to the first jaw. The patella cutting guide surface defines a resection plane that extends through a patient's patella when the patella is positioned between the first jaw and the second jaw.