Integrated Femur Reshaping Tool for Hip Resurfacing
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Solution Overview
Problem
Traditional orthopedic cutting tools require multiple instruments for reshaping the femur, leading to potential misalignment and complications during hip resurfacing procedures, which can result in improper fitting of femoral head prosthetics and subsequent mobility issues and additional surgical needs.
Innovation Solution
A single orthopedic cutting tool with integrated post forming, chamfer, and plan cutting blades positioned within interconnected housing segments, allowing for simultaneous reshaping of the femur in a single motion, reducing the risk of misalignment and improving prosthetic fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If three separate cutting tools are used to reshape the femur, then each cutting function (cylindrical shaping, planing, chamfering) can be performed, but the risk of misalignment between tools increases and manufacturing precision deteriorates
Solution Approach 1:
The patent combines three separate cutting tools (sleeve cutter, plan cutter, chamfer cutter) into a single integrated cutting tool assembly. The housing contains multiple cutting blades arranged to perform cylindrical shaping, planing, and chamfering operations simultaneously or sequentially on the femur head, eliminating the need for multiple separate tools and ensuring precise alignment through the common housing structure.
Solution Approach 2:
The single cutting tool assembly is designed to perform multiple cutting functions through different blades within the same housing. The first blade performs cylindrical shaping, the second blade performs planing, and the third blade performs chamfering, making the tool universal for all required reshaping operations in one instrument.
2Adaptability or versatility
If multiple separate cutting tools are used, then comprehensive reshaping can be achieved, but the device complexity and number of components increase
Solution Approach 1:
The patent merges three separate cutting tools into one integrated assembly with a common housing and drive mechanism. The housing contains all necessary cutting blades (first blade for cylindrical shaping, second blade for planing, third blade for chamfering) arranged to work on the femur head in a coordinated manner, reducing the number of separate devices from three to one.
3Adaptability or versatility
If three separate cutting tools are used, then each cutting surface can be formed, but the time required for the procedure increases
Solution Approach 1:
The integrated cutting tool assembly allows for continuous reshaping of the femur head without interruption. The multiple blades are positioned to perform cylindrical shaping, planing, and chamfering operations in a continuous sequence or simultaneously during a single engagement, eliminating the time required to remove and replace three separate tools.
Data Source
AI summary
An orthopedic cutting tool for reshaping the end of a femur is described. The cutting tool comprises three separate cutting blades that are positioned within different locations within a housing to reshape the end of the femur to thus receive a femur head prosthetic. The cutting tool forms the reshaped femur end in one cutting motion.