Augment Insert Breakable Aperture for Glenoid Adaptation
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Solution Overview
Problem
Current shoulder prostheses face inventory challenges due to the need for multiple glenoid components of varying sizes and geometries to accommodate different patient anatomies, particularly in cases where wear is centered on the superior and/or posterior side of the glenoid cavity, and existing modular systems require separate augment inserts for anatomic and reverse components.
Innovation Solution
A single augment insert with a breakable portion that can be adjusted to fit different scapular shapes by breaking off to create an aperture, allowing it to accommodate various engaging members, thus reducing the number of inventory items and enabling adaptation to both anatomic and reverse glenoid components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple glenoid components of different shapes are provided to accommodate various patient anatomies, then adaptability to patient-specific shapes is improved, but device complexity and inventory requirements worsen
Solution Approach 1:
The augment insert is designed with a breakable portion that can be selectively removed to create different configurations. This single component can adapt to both anatomic and reverse glenoid components, as well as accommodate various engaging member positions, thereby reducing the need for multiple specialized components while maintaining versatility for different patient anatomies
Solution Approach 2:
The augment insert is divided into a breakable portion and a remaining body. The breakable portion can be selectively removed based on the specific surgical requirements, allowing the same base component to serve multiple functions and accommodate different glenoid component shapes and engaging member positions
2Adaptability or versatility
If separate augment inserts are provided for anatomic and reverse glenoid components, then adaptability to different component types is improved, but device complexity worsens
Solution Approach 1:
The augment insert incorporates a breakable portion that, when selectively removed, creates an aperture for accommodating engaging members. This design allows a single augment insert type to work with both anatomic and reverse glenoid components, eliminating the need for separate augment insert designs for each component type
3Ease of manufacture
If cement or bone graft is used to compensate for shape differences, then ease of manufacture is improved, but reliability of integration worsens
Solution Approach 1:
Instead of relying on cement or bone graft which may not provide sufficient integration reliability, the invention uses a removable augment insert with a breakable portion. This approach provides mechanical adaptation that ensures reliable integration while maintaining ease of application and removal
Data Source
AI summary
This augment insert (200), comprises a coupling member (204) for securing the augment insert to a glenoid component (103) of a shoulder prosthesis (101), and a body (202), comprising a first side (206), configured to bear against a scapular side (107) of the glenoid component when the augment insert is secured to the glenoid component by means of the coupling member; and a second side, opposed to the first side and configured to bear against or be adjacent to a scapula of a patient. According to the invention, the body (202) comprises at least one breakable portion (230), extending from the first side (206) to the second side and configured to be broken off the body. The aperture (234) is provided for accommodating an engaging member (111) of the glenoid component (103), said engaging member protruding from a scapular surface (127) of the scapular side (107) of the glenoid component (103) and being configured for securing the shoulder prosthesis to the scapula.