Bone Preparation Reference Guide for Revision Surgery
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Solution Overview
Problem
During surgical procedures, especially revision procedures, important bony landmarks can be damaged or lost, making it challenging for surgeons to accurately complete procedures without reliable reference points for reaming or broaching depths.
Innovation Solution
A bone preparation guide with a bone attachment portion and a reference indicator that can be securely attached to an unprepared bone surface using cerclage cable or other fixation features, providing a stable reference frame even when traditional landmarks are compromised, allowing for accurate identification of target locations for implant placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional anatomical landmarks are used as reference points, then the surgical procedure can be completed using simple methods, but the landmarks may be damaged or lost during revision procedures, compromising accuracy
Solution Approach 1:
The patent introduces an intermediary reference guide device that mediates between the surgeon and the bone structure. This device provides artificial reference points that do not rely on damaged anatomical landmarks, solving the contradiction by creating a new reference system that is independent of compromised traditional landmarks while maintaining procedural simplicity
Solution Approach 2:
The reference guide is attached to the bone surface before the actual implant preparation begins. This preliminary action establishes reliable reference points in advance, allowing the surgeon to proceed with the procedure even when traditional landmarks are unavailable or damaged during revision
2Measurement precision
If preoperative planning is used to identify alternative landmarks, then accuracy can be maintained when traditional landmarks are compromised, but this requires knowing pre-operatively that landmarks are unavailable and requires additional planning time
Solution Approach 1:
The reference guide is designed as a disposable, inexpensive device that can be attached intraoperatively without requiring extensive preoperative planning. It provides accurate reference points on-demand, eliminating the need for complex preoperative identification of alternative landmarks while maintaining measurement precision
3Measurement precision
If length or offset guides with fixed pins are used, then leg length or offset can be measured intraoperatively, but these devices cannot attach in close proximity to unprepared bone surfaces
Solution Approach 1:
The reference guide is designed with universal attachment capability that works on unprepared bone surfaces, making it adaptable to various surgical situations. The device combines reference point provision with versatile attachment methods, allowing it to function as both a positioning guide and a measurement reference for procedures like leg length and offset measurement
4Manufacturing precision
If resection guides are used to guide bone resection, then accurate bone removal can be achieved, but these devices depend on certain anatomical structures being present and can only be used on prepared bone surfaces
Solution Approach 1:
The invention extracts the essential function of providing accurate reference points from the complex resection guide system. By separating the reference point provision from the need for specific anatomical structures or prepared surfaces, the device enables accurate bone resection guidance even when traditional anatomical landmarks are unavailable or the bone surface is unprepared
Data Source
AI summary
A reference guide comprising an attachment portion configured to abut with and attach to an anatomical feature such as a bone. The reference guide further comprises a reference indicator that may be formed integrally with, or selectively securable to, the attachment portion and that indicates a reference point with respect to the attachment portion. The reference guide may be used to identify a target location during a surgical procedure even in the absence of traditional landmarks.