Surgical Jig Assembly with Three-Axis Translation for Bone Fixation
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Solution Overview
Problem
Current surgical jig assemblies lack the capability to securely hold and manipulate bone segments with three axes of movement, essential for calcaneal slide osteotomy procedures and other surgical corrections, limiting precise translation and fixation of bone segments.
Innovation Solution
A surgical jig assembly with a configuration of interlocking members providing three perpendicular axes of translation and optional rotational motion, along with bone engagement posts, drill guides, cut guides, and implant devices, enabling precise manipulation and fixation of bone segments through threaded adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a surgical jig assembly is designed to securely hold and manipulate bone segments with three axes of movement, then the capability for precise translation and fixation of bone segments is improved, but the device complexity increases
Solution Approach 1:
The surgical jig assembly is divided into multiple independent members (first member, second member, third member, fourth member) that can be selectively coupled together. Each member provides specific functionality (bone engagement, translation along specific axes), allowing the complex three-axis manipulation capability to be achieved through modular composition rather than a monolithic complex structure.
Solution Approach 2:
The members are coupled in a nested configuration where the second member is coupled to the first member, the third member is coupled to the second member, and the fourth member is coupled to the third member. This nesting allows compact arrangement of multiple degrees of freedom while maintaining accessibility for manipulation and fixation operations.
2Manufacturing precision
If threaded coupling connections are used between members to enable translation along perpendicular axes, then the precision of bone segment manipulation is improved, but the device complexity increases
Solution Approach 1:
Threaded coupling connections serve as intermediary mechanisms between the members, converting rotational motion into precise linear translation along perpendicular axes. These threaded connections act as mechanical mediators that enable controlled, precise movement without requiring complex direct coupling mechanisms between each pair of members.
Solution Approach 2:
The patent replaces complex mechanical guidance systems with simpler threaded coupling mechanisms. Instead of using complex rails, guides, or cam mechanisms to achieve precise translation, the invention uses threaded connections that inherently provide controlled linear movement through screw-thread geometry, simplifying the overall mechanical system while maintaining precision.
3Ease of operation
If multiple threaded members and coupling connections are used to provide three axes of manipulation, then the ease of operation for bone segment translation is improved, but the device complexity increases
Solution Approach 1:
The surgical jig assembly incorporates dynamic characteristics by allowing selective translation of members relative to one another along three perpendicular axes. The threaded couplings enable smooth, controlled movement in multiple directions, making the device adaptable to various manipulation needs while maintaining ease of operation through inherent mechanical smoothness of threaded connections.
Data Source
AI summary
A surgical jig assembly that is configured to hold and manipulate a first bone segment and a second bone segment, including: a first member that is configured to be selectively coupled to the first bone segment; a second member coupled to the first member, wherein the second member selectively translates with respect to the first member along a first axis; a third member coupled to the second member, wherein the third member selectively translates with respect to the second member along a second axis, wherein the second axis is perpendicular to the first axis; and a fourth member coupled to the third member, wherein the fourth member selectively translates with respect to the third member along a third axis, wherein the third axis is perpendicular to the first axis and the second axis, and wherein the fourth member is configured to be selectively coupled to the second bone segment.