Expandable Arthroplasty Plates for Bone Sizing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Arthroplasty procedures require multiple plates of varying sizes to find a proper fit for prostheses, increasing the complexity and number of instruments needed during surgical procedures.
Innovation Solution
An adjustable device with a first and second member that can be adjusted to match the anterior/posterior and medial/lateral dimensions of a bone cross-section, allowing for a customizable fit without the need for multiple plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple plates of varying sizes are used to find a proper fit, then the proper size of implant can be determined, but the number of instruments and device complexity increases
Solution Approach 1:
A single arthroplasty plate is designed with adjustable features that allow it to perform multiple sizing functions. The plate includes adjustable arms or extensions that can be positioned at various angles and lengths to accommodate different bone geometries and implant sizes, eliminating the need for multiple separate plates.
Solution Approach 2:
The arthroplasty plate incorporates dynamic adjustment mechanisms such as movable arms, telescopic sections, or articulating components that allow the plate to change its configuration during the procedure. This enables one plate to adapt to multiple sizing requirements that previously required multiple static plates.
2Measurement precision
If multiple plates of varying sizes are used, then proper prosthesis sizing is achieved, but the time required for sequential positioning increases
Solution Approach 1:
The adjustable plate can perform multiple sizing measurements in a single positioning event. By incorporating adjustable arms that can be configured for different implant sizes and bone geometries, the surgeon can determine the proper prosthesis size without removing and replacing multiple plates sequentially.
Solution Approach 2:
The plate is designed with pre-configured adjustment mechanisms that allow the surgeon to set the appropriate dimensions before final positioning. Adjustment features such as pre-marked positions, click-stop mechanisms, or quick-release locks enable rapid configuration without time-consuming sequential trials.
3Adaptability or versatility
If multiple plates are required for different bone dimensions, then various bone geometries can be accommodated, but the quantity of instruments increases
Solution Approach 1:
The arthroplasty plate is designed as a universal sizing tool that can accommodate various bone geometries through its adjustable features. The plate includes adjustable arms, variable length sections, or articulating components that can be configured to match different anterior/posterior and medial/lateral bone dimensions, replacing the need for multiple specialized plates.
Solution Approach 2:
The plate incorporates dynamic adjustment capabilities that allow it to adapt to different bone geometries during the procedure. Movable components enable the plate to change its shape and dimensions to accommodate various bone cross-sections and implant sizes that would previously require multiple static plates.
Data Source
AI summary
A device (20) used during a medical procedure to engage a cross-section of a bone is disclosed herein. The device is selectively expandable to correspond to the cross-section of the bone. Once the device is properly sized, the device is used as a sizing tool to select the proper size of an implant or as a surgical guide for preparing the bone with a surgical instrument, for example.