Segmented Bone Cutting Guide With Distractor Tab
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for preparing bone surfaces in joint spaces for cartilage surface repairing implants, such as hydrogel implants, lack accuracy and proper orientation, making it challenging for surgeons to perform the procedure repeatedly and with precision.
Innovation Solution
A bone cutting guide with a main body featuring a bone contacting surface and intersecting cutting guide slots forming an acute angle, along with a distractor tab, is designed to guide bone cutting saw blades or burrs, ensuring accurate angled cuts in bone surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional bone cutting methods are used without a guide instrument, then the surgical procedure is simpler and faster to perform, but the accuracy and proper orientation of bone surface preparation are compromised
Solution Approach 1:
The cutting guide is divided into a base member and interchangeable members that can be separately manufactured and assembled. The base member contains the bone-contacting surface and distractor tab, while interchangeable members contain different cutting guide slot configurations, allowing precision without excessive overall complexity.
Solution Approach 2:
The base member serves multiple functions: providing a bone-contacting surface for positioning, incorporating a distractor tab for joint space distraction, and accepting multiple interchangeable members with different cutting guide slot configurations, making it a universal platform for various cutting orientations.
2Adaptability or versatility
If a fixed cutting guide design is used, then the device is simpler to manufacture, but the ability to perform different angled cuts and adapt to various surgical needs is limited
Solution Approach 1:
The cutting guide system is segmented into a permanent base member and removable interchangeable members. Each interchangeable member can be manufactured independently with specific cutting guide slot angles, allowing versatility in cutting orientations while keeping the base member manufacturing simple and standardized.
Solution Approach 2:
The cutting guide transitions from a static, fixed-design instrument to a dynamic system where interchangeable members can be swapped during surgery. This allows the cutting guide to adapt to different surgical needs and cutting angles without requiring multiple complete guide designs to be manufactured.
3Manufacturing precision
If bone cutting is performed without joint space distraction, then the surgical procedure is faster, but the precision and repeatability of bone surface preparation are reduced
Solution Approach 1:
The distractor tab is designed to perform joint space distraction before the cutting guide is fully positioned and locked to the bone. This preliminary distraction action creates the necessary joint space and proper orientation for subsequent precise cutting, ensuring accuracy is achieved without compromising surgical efficiency.
Data Source
AI summary
Bone cutting guides and bone cutting guide assemblies are disclosed that are useful for preparing a bone in a joint space, such as those in mid-foot region joints, to prepare the cartilage end of the bone for receiving cartilage repairing implants such as hydrogel implants.