Surgical Guide Device for Glenoid Bone Graft Alignment
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Solution Overview
Problem
Current surgical techniques face challenges in accurately aligning and attaching bone grafts to the glenoid during shoulder reconstruction procedures, particularly due to the difficulty in identifying proper locations for screw insertion, which can lead to instability and damage to the joint.
Innovation Solution
A surgical guide device featuring a cannula with parallel elongate channels and interchangeable sleeves is used to define precise openings in the bone for screw placement, allowing for the accurate positioning and attachment of a bone graft, reducing reliance on surgeon experience and minimizing the risk of incorrect placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional surgical techniques are used to prepare bone for graft attachment, then the surgical procedure can be performed with simple tools, but the precision of screw placement and graft alignment is insufficient
Solution Approach 1:
The surgical guide device is positioned and secured to the bone surface before any drilling or screw insertion occurs. The guide defines the exact trajectory and depth for screw holes in advance, ensuring precise placement before the actual attachment procedure begins. This preliminary positioning of the guide device eliminates the need for complex intraoperative adjustments and achieves high precision without requiring complex real-time control mechanisms.
Solution Approach 2:
The surgical guide device acts as an intermediary between the surgeon and the bone structure. It translates the surgeon's intent for precise screw placement into actual physical guidance through its structured channels and positioning features. The guide device mediates the interaction by providing a stable reference framework that ensures accurate screw insertion without requiring the surgeon to directly measure and calculate each screw position.
2Reliability
If multiple screw holes need to be positioned at different orientations, then comprehensive attachment is achieved, but the time required for positioning each hole increases
Solution Approach 1:
The surgical guide device is segmented into multiple independent channels, each dedicated to a specific screw hole position and orientation. Each channel is pre-configured with the correct angle, depth, and trajectory for its designated screw. This segmentation allows the surgeon to simultaneously prepare multiple screw holes by simply positioning the guide once, eliminating the need to reposition and re-measure for each individual hole, thus achieving comprehensive attachment stability without excessive positioning time.
Solution Approach 2:
The surgical guide device is designed as a multi-functional tool that can simultaneously guide multiple screws at different orientations and positions. A single guide device incorporates multiple channels that can accommodate various drill bits and screw insertion tools, allowing the surgeon to complete the entire attachment procedure using one universal guide rather than multiple specialized tools, thereby reducing total positioning time while ensuring reliable attachment.
3Stability of the object's composition
If the bone graft needs to be precisely aligned with the glenoid, then the joint stability is improved, but the difficulty of identifying proper attachment locations increases
Solution Approach 1:
The surgical guide device incorporates visual indicators such as colored markings, transparent sections, or contrasting materials that highlight the correct positioning of the guide relative to the glenoid bone. These visual cues enable the surgeon to quickly identify proper attachment locations and verify correct alignment without requiring complex measurements or advanced imaging during the procedure, thus achieving precise graft alignment and improved joint stability while reducing the difficulty of locating attachment sites.
Data Source
AI summary
Systems and methods for preparing a bone for a surgical procedure are provided. In general, the described techniques use a surgical guide device including a cannula having first and second parallel elongate channels adjacent to one another, and first and second elongate sleeves configured to be removably and replaceably received in the first and second channels, respectively. The first sleeve has a plurality of openings formed therein, each being in communication with a respective wire-receiving lumen extending through the first sleeve. Each of the openings defines a different offset distance between the wire-receiving lumen in communication with that opening and a wire-receiving lumen extending through the second sleeve. The surgical device can be manipulated so as to define positions of first and second openings in a bone, such as a glenoid or other bone, to receive bone screws or other elements for attaching a bone graft to the bone.