Universal Acetabular Prosthesis with Modular Flanges
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The current inventory management for revision acetabular prostheses is cumbersome due to the need for multiple types and orientations of prosthetic devices to accommodate different surgeons' preferences and varying patient conditions, leading to increased hospital costs, inventory complexity, and prolonged surgical times.
Innovation Solution
A prosthetic assembly with adjustable bone attachment openings and a kit of parts that includes mirror-image bridging members to accommodate both left and right sides of the patient, allowing for universal use of a single body portion with adaptable flanges and securing mechanisms, such as screws and drill guides, to secure the assembly to the bone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of revision acetabular prostheses are maintained to accommodate different surgeons' preferences and patient conditions, then the ability to address various surgical needs is improved, but inventory complexity and hospital costs increase
Solution Approach 1:
The prosthesis design integrates multiple attachment configurations into a single universal device. The acetabular cup includes both iliac flange attachment points and obturator hook attachment points, allowing it to function as both an iliac-flange-based prosthesis and an obturator-hook-based prosthesis. This multi-functionality eliminates the need to maintain separate inventory of different prosthesis types while preserving the ability to address various surgical needs.
Solution Approach 2:
The prosthesis is divided into modular components with distinct attachment mechanisms. The iliac flange and obturator hook are separate attachable components that can be configured based on surgical requirements. This segmentation allows flexibility in configuration while using a single base prosthesis design, reducing inventory complexity.
2Adaptability or versatility
If multiple revision acetabular cups are available during surgery to account for various conditions, then surgical flexibility is improved, but surgical time and sterilization requirements increase
Solution Approach 1:
A single acetabular cup design incorporates both iliac flange and obturator hook attachment capabilities, providing surgical flexibility without requiring multiple different cup types to be sterilized and available. The universal design allows the surgeon to adapt the same sterilized prosthesis to different surgical conditions by configuring different attachment components.
3Reliability
If different types of revision acetabular prostheses are used to provide secure attachment to bone, then fixation stability is improved, but the number of required prosthetic devices and tools increases
Solution Approach 1:
The acetabular cup is designed with universal attachment capabilities including both iliac flange interfaces and obturator hook interfaces. This allows a single prosthesis type to provide secure fixation through multiple mechanisms depending on the surgical situation, eliminating the need to maintain inventory of multiple specialized prosthesis types.
Solution Approach 2:
The prosthesis allows dynamic configuration of attachment methods. The surgeon can select and attach either the iliac flange or obturator hook components based on the specific surgical conditions and bone quality, providing adaptability in fixation strategy without requiring multiple fixed-design prostheses.
Data Source
Figure 1
Figure 2
Figure 3(a)~3(d)
AI summary
A prosthetic assembly A prosthetic assembly (10) comprising: a body portion (12); first and second flanges (14, 16) provided on a rim (18) of the body portion; the first and second flanges being provided with first and second openings (20, 22) respectively; and a bridging member (24) connectable to the first and second flanges such that the member spans between the first and second flanges, the member being provided with a third opening (26); wherein the first, second and third openings are suitable for receiving first, second and third bone attachment means (28, 30, 32) respectively.