Pivoting Osteotomy Guide with Detent Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current minimally invasive surgical techniques for osteotomies, such as those for hallux valgus correction, face challenges in accurately guiding cutting tools to avoid tissue damage and ensure precise bone cuts, particularly in minimizing collateral damage and scarring while maintaining reproducibility.
Innovation Solution
A cutting or drilling guide is designed with a guide base and inner collar that pivots the cutting tool about a defined axis, featuring detents and spring-loaded devices for precise alignment and motion control, and can be adhered to the skin using a pressure-sensitive adhesive, allowing for controlled bone cuts with reduced risk of skin damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If minimally invasive surgical techniques are used for osteotomies, then tissue damage and scarring are reduced, but surgical precision and reproducibility become more difficult to achieve
Solution Approach 1:
The guide is prepared and positioned on the patient's anatomy before the osteotomy procedure begins. The guide incorporates pre-configured cutting paths, depth markers, and alignment features that establish precise bone cut geometry in advance, eliminating the need for complex intraoperative adjustments and ensuring reproducible results across different surgeons and procedures.
Solution Approach 2:
The guide serves as an intermediary device between the surgeon's intent and the actual bone cutting action. It translates surgical planning into precise physical guidance through its structured geometry, providing a mechanical interface that ensures accurate cut placement, angle, and depth while protecting surrounding soft tissues from direct instrument manipulation.
2Manufacturing precision
If complex guiding mechanisms with multiple components are used to ensure precise bone cuts, then surgical precision is improved, but device complexity increases
Solution Approach 1:
The guide is divided into distinct functional segments: a positioning component that interfaces with bony landmarks, a body that defines the cutting path geometry, and an optional adhesive layer for soft tissue attachment. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity and ease of assembly during surgery.
Solution Approach 2:
The guide design incorporates universal features that allow it to serve multiple functions: positioning on various bone surfaces through adjustable landmarks, defining cutting paths for different osteotomy types, providing depth control through integrated markers, and optionally adhering to soft tissue. This multi-functionality reduces the need for multiple specialized devices for different surgical scenarios.
Data Source
AI summary
A guide for a bone cut comprises a guide base having an inner wall defining an opening. The inner wall has a plurality of detents distributed around the opening. The guide base has a proximal surface adapted to contact a skin of a person. An inner collar has one or more spring loaded devices extending outward from the inner collar in opposite directions. The inner collar is mountable with the spring loaded devices fitting within one or more of the plurality of detents. The inner collar has an inner wall defining a bore for receiving a cutting tool. The inner collar is configured to pivot the cutting tool about an axis, for cutting a bone. The axis lies along or parallel to a line along which the spring loaded devices lie.