Latarjet Procedure Instrument Kit for Bone Graft Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The Latarjet surgical procedure for shoulder stabilization is complex and prone to errors due to the need for precise positioning of bone grafts, leading to risks of arthrosis, luxation, and graft misalignment, with existing methods prolonging surgery time and increasing anesthesia risks.
Innovation Solution
A novel instrument kit with a positioning instrument featuring adjustable branches and a drill bush allows simultaneous drilling of the bone graft and scapula, ensuring precise alignment and reducing operating time by guiding both graft and bone drilling operations without handling the graft separately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate drilling of graft and scapula is performed with referencing, then drilling operations can be completed, but operating time is prolonged and alignment errors may occur
Solution Approach 1:
The patent combines the separate drilling operations of the graft and scapula into a single simultaneous drilling operation using a unified drilling instrument. The instrument includes a positioning element that references the glenoid surface and guides two drilling elements to create holes in both the graft and scapula at the same time, eliminating the need for separate drilling steps and referencing operations.
Solution Approach 2:
The patent introduces a positioning element as an intermediary component that references the glenoid surface and transfers this reference to both drilling elements. This positioning element acts as a mediator that ensures accurate alignment and spacing between the graft and scapula holes without requiring separate referencing operations, thereby reducing operating time while maintaining precision.
2Manufacturing precision
If multiple referencing steps are performed, then alignment can be achieved, but complexity of the procedure increases
Solution Approach 1:
The patent merges multiple referencing steps into a single referencing operation. The positioning element references the glenoid surface once and simultaneously guides both drilling operations, eliminating the need for separate referencing steps for each drilling operation and reducing procedural complexity.
Solution Approach 2:
The positioning element serves multiple functions: it references the glenoid surface, determines the orientation of the drilling axis, and establishes the spacing between the two holes. This multi-functional component reduces the number of separate tools and steps required, thereby simplifying the procedure while maintaining positioning accuracy.
3Ease of operation
If forceps with pivoting branches are used, then graft can be held, but visual monitoring by operator is limited
Solution Approach 1:
The patent segments the forceps structure into fixed parallel branches instead of pivoting branches. This segmentation allows the branches to maintain a constant distance and orientation, providing better visual access for the operator while still enabling secure graft holding through the fixed parallel structure.
Data Source
AI summary
Disclosed is a positioning instrument that includes: two branches equipped at the proximal end thereof with an opposite jaw between which the graft is positioned, the two branches moving closer to one another by a translation movement; and a drill bush including a first hole and a second hole, separated by a distance and sized for the passage and guidance of a bone drill bit. Also disclosed are an instrument kit as well as a method for attaching a graft.