Modular Prosthetic Device for Sternum and Rib Reconstruction
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Solution Overview
Problem
Current chest wall reconstruction methods fail to comprehensively address the biomechanical, aesthetic, and protective functions of the sternum, clavicles, and ribs, often resulting in instability and reduced mobility of the shoulder girdle, especially when the sternoclavicular joint is compromised.
Innovation Solution
A modular, anatomically bioinspired prosthetic device designed for sternum, ribs, and clavicles reconstruction, featuring a polyfunctional plate system that includes a sternoclavicular joint design with a cup lock mechanism, allowing for symmetrical and adjustable placement to maintain biomechanical stability and mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current chest wall reconstruction methods are used, then the sternum, ribs and clavicles can be partially replaced, but the biomechanical stability and shoulder girdle mobility are compromised
Solution Approach 1:
The prosthetic device is divided into multiple modular components including a manubrium plate, sternum plate, clavicle plates, and rib plates that can be independently selected and assembled. This segmentation allows each component to be optimized for its specific biomechanical function while maintaining overall system stability and mobility
Solution Approach 2:
The cup lock mechanism incorporates a spherical head that rotates within a cup-shaped recess, enabling dynamic movement and rotation at the sternoclavicular joint. This dynamic design preserves shoulder girdle mobility while maintaining stable fixation through the interlocking mechanism
2Ease of manufacture
If a fixed prosthetic design is used for chest wall reconstruction, then manufacturing is simplified, but adaptability to different patient anatomies and pathological conditions is reduced
Solution Approach 1:
The prosthetic system consists of standardized modular components (manubrium plate, sternum plate, clavicle plates, rib plates) that can be manufactured using consistent processes and then assembled in various configurations to match different patient anatomies and resection patterns
Solution Approach 2:
The modular plates are designed with universal features including multiple hole patterns, standardized connection interfaces, and adjustable positioning capabilities that allow the same basic components to adapt to various anatomical variations and surgical requirements
3Device complexity
If the sternoclavicular joint is not reconstructed, then the surgical procedure is simplified, but shoulder girdle stability and natural movement are lost
Solution Approach 1:
The cup lock mechanism is pre-designed with a spherical head and cup-shaped recess that automatically align and lock together during assembly, providing stable sternoclavicular joint reconstruction without requiring complex surgical techniques or additional stabilization procedures
Data Source
AI summary
The present invention discloses a prosthetic device for reconstruction of sternum, ribs, and clavicles, comprising a manubrium plate attached to a sternum plate by means of a joining plate. The manubrium plate has spherical ends coupled to the clavicle plate by screwing into a cup lock. The manubrium plate has extensions with holes, on which rib plates are seated. Similarly, the sternum plate has extensions with holes, on which rib plates are seated.