Tibial Augmentation Guide Adjustable Slot Mechanism
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Solution Overview
Problem
Current orthopedic cutting guides often result in uneven or incorrectly gauged surfaces during tibial augmentation surgery, making it difficult to properly implant tibial implants and augmentation blocks, which can require additional cutting blocks or freehand cuts.
Innovation Solution
A method and kit using a tibial augmentation guide with a guide portion and connection portion for an intramedullary rod, allowing for precise creation of two cut surfaces at different heights to form a single flat surface, facilitating proper implantation of tibial implants and augmentation blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single cutting block with fixed slots is used to make cuts at different heights, then the cutting guide structure remains simple, but the cut surfaces become uneven or incorrectly gauged, requiring additional cutting blocks or freehand cuts
Solution Approach 1:
The cutting guide employs an adjustable slot mechanism that allows the slot position to be dynamically repositioned along the cutting block. This enables the same cutting block to accommodate cuts at multiple heights by adjusting the slot location, eliminating the need for multiple fixed cutting blocks while maintaining precise, flat cut surfaces.
Solution Approach 2:
The cutting guide is divided into functional segments: a cutting block portion and an adjustable slot mechanism. This segmentation allows the slot to be independently positioned and secured at different locations, enabling precise control over cut height and angle while keeping the overall structure relatively simple.
2Manufacturing precision
If multiple cutting blocks are used to achieve precise cut surfaces at different heights, then cut surface accuracy improves, but the number of instruments and procedure complexity increase
Solution Approach 1:
The cutting block is designed with universal functionality through its adjustable slot mechanism, allowing a single block to perform the functions of multiple fixed cutting blocks. The slot can be repositioned to accommodate different cut heights and angles, enabling one instrument to replace several while maintaining surgical precision and simplifying the overall procedure.
3Manufacturing precision
If healthy bone material is removed to create planar surfaces for implantation, then proper implant fit is achieved, but the overall bone material in the tibia is reduced
Solution Approach 1:
The adjustable slot mechanism allows precise control over cutting parameters such as height, angle, and depth. By optimizing these parameters, the surgeon can create the necessary planar surfaces for accurate implant fit while minimizing the removal of healthy bone material. The ability to make precise, controlled cuts ensures that only the minimum necessary bone is removed to achieve proper implantation geometry.
Data Source
AI summary
A guide for use in making tibial augmentation cuts is disclosed. The guide is preferably for use subsequent to an initial cut being made. A method of utilizing the guide, as well as making the initial cut is also disclosed.