Patient-Specific Glenoid Guide for Shoulder Arthroplasty
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Solution Overview
Problem
Current guide tools for shoulder prosthetic implantation lack precision in positioning and alignment relative to the glenoid face of the scapula, leading to suboptimal surgical outcomes due to non-customized designs that do not accurately conform to individual patient anatomy.
Innovation Solution
A patient-specific glenoid guide tool with a three-dimensionally contoured surface that nests and conforms to the scapula's anatomy, including the glenoid face, acromion, and surrounding structures, to accurately position a guide surface for precise placement of prosthetic devices during shoulder arthroplasty procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a standardized guide tool is used for shoulder prosthetic implantation, then the device complexity is reduced and ease of manufacture is improved, but the positioning precision and alignment accuracy relative to the glenoid face deteriorate due to inability to conform to individual patient anatomy
Solution Approach 1:
Patient-specific surfaces are created through preoperative imaging and customization before the surgical procedure. This preliminary customization allows the guide tool to precisely match the patient's unique glenoid anatomy, ensuring accurate positioning and alignment during surgery without requiring complex intraoperative adjustments.
2Measurement precision
If a patient-specific customized guide tool is used, then the positioning precision and alignment accuracy are improved, but the ease of manufacture and device complexity increase
Solution Approach 1:
The guide tool is customized based on preoperative imaging data, allowing precise patient-specific surfaces to be manufactured before surgery. This approach achieves high alignment accuracy while simplifying the manufacturing process by using digital planning and standardized fabrication methods for patient-specific instruments.
Data Source
AI summary
A patient-specific guide tool for guiding an object toward a glenoid face of a scapula of a patient for implantation of a shoulder prosthetic device is disclosed. The guide tool includes a guide portion that includes a guide surface. The guide surface is configured to guide movement of the object toward the glenoid face. Furthermore, the guide tool includes a patient-specific portion that is operably coupled to the glenoid portion. The patient-specific portion includes at least one patient-specific surface that is three-dimensionally contoured and that is configured to nest and closely conform to a corresponding surface of the scapula to thereby position the guide surface at a predetermined position relative to the glenoid face.