Patella Orthopaedic Instrument Assembly with Integrated Clamping
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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 inconsistencies and increased surgical complexity.
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 positioning and cutting of the patella, enabling accurate resection and drilling for prosthetic implantation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate surgical instruments are used for patella resection and drilling, then each instrument can be optimized for its specific function, but the surgical procedure becomes more complex and time-consuming
Solution Approach 1:
The patent combines multiple surgical instruments (resection guide, drill guide, clamping device) into a single integrated surgical instrument assembly. The handle assembly includes a clamping mechanism with first and second clamping elements that can securely hold the patella, while integrated guides provide both resection and drilling functions. This merging eliminates the need for multiple separate instruments, reducing surgical complexity and procedure time while maintaining functional optimization through dedicated components within the unified assembly.
Solution Approach 2:
The surgical instrument assembly is designed with multi-functionality, where a single device performs multiple surgical functions including clamping the patella, guiding resection cuts, and guiding drill holes. The handle assembly can accommodate different surgical tools and guides, making it a universal instrument that adapts to various surgical needs throughout the procedure, thereby reducing the number of instrument changes and procedural steps required.
2Manufacturing precision
If traditional surgical instruments are used without integrated clamping mechanisms, then the instrument design is simpler, but positioning accuracy and resection precision are compromised
Solution Approach 1:
The clamping mechanism is integrated directly into the surgical instrument assembly, with first and second clamping elements positioned to securely hold the patella in place. This integration ensures that the clamping function and guiding function work together as a unified system, providing stable positioning that enables precise resection and drilling operations without requiring separate clamping devices.
Solution Approach 2:
The clamping elements are designed to secure the patella in the correct position before the resection and drilling operations begin. By establishing proper positioning and stabilization in advance, the instrument ensures that subsequent cutting and drilling operations can be performed with high precision, as the patella remains firmly held in the intended position throughout the procedure.
3Measurement precision
If manual positioning methods are used for patella preparation, then the instrumentation is less complex, but surgical consistency and accuracy decrease
Solution Approach 1:
The surgical instrument assembly includes integrated guides and clamping elements that pre-establish the correct positioning for resection and drilling. The guides are designed with specific geometries and orientations that automatically align with anatomical landmarks, providing preliminary positioning that ensures accurate and consistent surgical outcomes without relying on manual measurement and positioning techniques.
Solution Approach 2:
The instrument assembly is designed to self-position and self-align during the surgical procedure. The clamping elements and guides work together to automatically establish the correct orientation and position of the patella, reducing the need for complex manual positioning by the surgeon. The instrument essentially positions itself through its inherent geometric design and mechanical constraints.
Data Source
AI summary
An orthopaedic surgical instrument assembly including a handle and a plurality of surgical tools configured to be selectively coupled with the handle. The handle includes a housing and a lever moveably coupled to the housing. Each surgical tool of the plurality of surgical tools includes a first clamping element and a second clamping element configured to move relative to the first clamping element. The second clamping element is configured to be coupled to the lever such that moving the lever relative to the housing advances the second clamping element toward the first clamping element to clamp a bone of a patient.