Curved Guide Jig for Bone Fixation Alignment
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Solution Overview
Problem
Current bone fixation devices, such as intramedullary nails, require complex and invasive procedures for alignment and operation, especially in large or obese patients, where deep insertion of tools is necessary, posing challenges in accessibility and precision.
Innovation Solution
A jig with a guide defining a non-rectilinear path and a remotely operable connecting element that allows for co-axial rotation and tool passage, facilitating reversible engagement with the bone fixation device, enabling easier access and operation without deep insertion of tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional alignment jig with rectilinear guide path is used, then the structure is simple, but the tool must be inserted deep into the surgical field to reach the connecting element, reducing ease of operation
Solution Approach 1:
The guide path is configured as a curvilinear (curved) path instead of a straight rectilinear path, allowing the connecting element to be accessed from a more accessible location while maintaining structural integrity of the alignment jig
2Reliability
If the connecting element is positioned deep in the surgical field for proper alignment, then the bone fixation device can be properly secured, but the complexity of tool insertion increases and accessibility decreases
Solution Approach 1:
The curvilinear guide path acts as an intermediary mechanism that transmits the connecting element from an accessible external location to the proper engagement position on the bone fixation device, eliminating the need for direct deep insertion of tools
3Adaptability or versatility
If a straight guide path is used for the connecting element, then the guide structure is simpler, but the connecting element cannot be remotely operated, reducing device versatility
Solution Approach 1:
The curvilinear guide path enables the connecting element to be operated from a remote location outside the deep surgical field while maintaining proper alignment and engagement with the bone fixation device, enhancing remote operability
4Adaptability or versatility
If the guide allows only rectilinear movement, then the manufacturing is simpler, but the connecting element cannot rotate co-axially, reducing functional capability
Solution Approach 1:
The curvilinear guide path is designed to accommodate both the curved trajectory and co-axial rotation of the connecting element, integrating rotational capability into the guide structure while maintaining manufacturability through standardized curved geometries
Data Source
AI summary
A jig for a bone fixation device, including those that comprise a guide; and a connecting element reversibly engagable with the bone fixation device; wherein the guide defines a non-rectilinear path and is adapted to receive the connecting element; and wherein the connecting element is remotely operable, and is adapted to permit a tool to be engaged with the bone fixation device. Other embodiments of the present invention include methods for placing a bone fixation device in a bone, using a jig of the present invention comprising the step of reversibly engaging the bone fixation device with the jig.