Patient-Specific Glenoid Guide with Reusable Holder
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Solution Overview
Problem
Current shoulder arthroplasty techniques face challenges in accurately aligning and positioning implants due to the variability in patient anatomy, leading to potential complications and suboptimal outcomes.
Innovation Solution
The development of a glenoid device comprising a reusable guide holder and a patient-specific glenoid guide, which are designed to work together to accurately align and position implants during both anatomic and reverse shoulder arthroplasty procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a patient-specific glenoid guide with custom bore is used, then alignment precision is improved, but device complexity increases
Solution Approach 1:
The glenoid device is divided into two separate components: a reusable guide holder with a non-custom bore and a patient-specific glenoid guide with a custom bore. This segmentation allows each component to be optimized independently - the guide holder can be manufactured once and reused, while only the glenoid guide needs to be custom-made for each patient, thereby reducing overall device complexity while maintaining alignment precision.
Solution Approach 2:
The reusable guide holder acts as an intermediary component that interfaces with the patient-specific glenoid guide. The guide holder provides a standardized interface that can be coupled with different patient-specific guides, allowing the precision alignment to be achieved through the combination of the two components rather than requiring the entire device to be custom-made.
2Ease of manufacture
If a reusable guide holder with non-custom bore is used, then manufacturing cost is reduced, but adaptability decreases
Solution Approach 1:
By segmenting the device into a reusable guide holder and a patient-specific glenoid guide, the system achieves both cost efficiency and adaptability. The guide holder is manufactured once and reused across multiple patients, reducing manufacturing costs, while the patient-specific guide is customized for each patient's anatomy, maintaining adaptability and versatility.
Solution Approach 2:
The reusable guide holder is designed to be discarded after a single use in its current form, while the patient-specific glenoid guide is recovered and reused. This approach allows the expensive, complex guide holder to be manufactured once and then the simpler, patient-specific guide is customized and reused, achieving both cost reduction and adaptability.
3Manufacturing precision
If a patient-specific glenoid guide is used, then implant placement accuracy is improved, but surgical time increases
Solution Approach 1:
The patient-specific glenoid guide is designed and manufactured before the surgical procedure. The custom bore is pre-formed in the guide according to the patient's specific anatomy and surgical plan. This preliminary action allows the guide to be ready for immediate use in the operating room, reducing the time required during surgery to prepare and position the guide, while still achieving high implant placement accuracy.
Data Source
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AI summary
A glenoid device for preparing a shoulder joint of a patient includes a reusable guide holder having a handle shaft. The glenoid device also includes a patient-specific glenoid guide having a body between an upper surface and a lower surface. The lower surface of the patient-specific glenoid guide is configured as a negative surface of a glenoid face based on preoperative image scans of the shoulder joint of the patient. The patient-specific glenoid guide forms a bore having a patient-specific orientation along an alignment axis of the shoulder joint of the patient.