Modular Glenoid Prosthesis Conversion Mechanism
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Solution Overview
Problem
Current surgical interventions for restoring function to damaged musculoskeletal tissues, such as the shoulder joint, often require multiple procedures and extensive bone removal when transitioning from anatomic to reverse shoulder replacements, leading to increased surgical time and patient recovery challenges.
Innovation Solution
A modular glenoid prosthesis system comprising a platform with a coupling portion and central bore, a glenoid component with pegs, and a glenosphere, allowing for either anatomic or reverse shoulder procedures without removing the entire prosthesis, using a taper plug and tapered stem for secure coupling, enabling flexible surgical approaches with reduced bone removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional non-modular glenoid prosthesis is used and conversion from anatomic to reverse shoulder replacement is performed, then the conversion can be achieved, but extensive bone removal and removal of the entire prosthesis are required
Solution Approach 1:
The glenoid prosthesis is divided into separate modular components: a base plate that remains固定在 the glenoid cavity, and a glenoid component that can be selectively attached or removed. This segmentation allows the glenoid component to be exchanged between anatomic and reverse configurations without removing the base plate, thereby minimizing bone removal while maintaining conversion capability
Solution Approach 2:
The base plate is designed with universal coupling features that can accommodate both anatomic glenoid components and reverse glenosphere components. This multi-functionality enables a single base plate to support different prosthesis types, allowing conversion between anatomic and reverse shoulder replacements without extensive bone removal
2Adaptability or versatility
If a traditional non-modular glenoid prosthesis is used and conversion from anatomic to reverse shoulder replacement is performed, then the conversion can be achieved, but the entire prosthesis must be removed
Solution Approach 1:
The prosthesis is segmented into a permanent base plate and a removable glenoid component. During conversion surgery, only the glenoid component needs to be removed and replaced, while the base plate remains in place. This significantly reduces surgical time compared to removing the entire prosthesis, while maintaining full conversion capability
Solution Approach 2:
The base plate is pre-fixed to the glenoid cavity during the initial anatomic shoulder replacement. This preliminary action creates a permanent foundation that can support both anatomic and reverse configurations, eliminating the need to remove and re-fix the base plate during conversion, thereby reducing surgical time
3Adaptability or versatility
If a modular glenoid prosthesis with selective coupling is used, then conversion between procedures is facilitated, but the prosthesis structure becomes more complex
Solution Approach 1:
The prosthesis is segmented into a base plate with coupling features and a separate glenoid component with matching coupling features. This segmentation enables selective assembly and disassembly for conversion between procedures. The complexity is managed by using standardized coupling interfaces that simplify the assembly process despite the modular structure
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates easier conversion between anatomic and reverse shoulder procedures, reducing surgical time and bone removal, thereby enhancing patient recovery and providing a versatile surgical solution for shoulder joint repairs.
Implementation Method 1
coupling a glenosphere having a taper to the tapered region of the center bore so that the taper and the tapered region lock to couple the glenosphere to the platform
Implementation Method 2
The central bore can define a tapered region, and the coupling portion can include a plurality of bores. The prosthesis can include a glenoid component having a plurality of pegs. Each of the plurality of pegs can be coupled to a respective one of the plurality of bores
Data Source
AI summary
The present teachings provide a modular glenoid prosthesis for replacing a portion of the anatomy. The prosthesis can comprise a platform having a coupling portion, a base and a central bore that extends from the coupling portion through the base. The central bore can define a tapered region, and the coupling portion can include a plurality of bores. The prosthesis can include a glenoid component having a plurality of pegs. Each of the plurality of pegs can be coupled to a respective one of the plurality of bores. The prosthesis can include a glenosphere including a tapered stem couplable to the tapered region. The glenoid component and the glenosphere are selectively couplable to the platform for replacing the portion of the anatomy.