Osteosynthesis System with Angled Blade and Truss Anchor
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Solution Overview
Problem
Current osteosynthesis systems for fracture fixation, especially in the proximal humerus region, face challenges in providing stability against high forces and distortion, often requiring complex insertion procedures and being unsuitable for minimal invasive surgery due to bulky designs and inadequate distribution of forces.
Innovation Solution
A bone osteosynthesis system comprising a bone plate with a longitudinal portion and a second portion, a blade with a predetermined angle of insertion, and bone anchors that form a truss-like structure to distribute forces effectively, allowing for stable fixation against bending and torsion forces and enabling minimal invasive surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a blade plate with a blade portion inserted into the bone is used to provide stability against distortion, then stability against distortion is improved, but the insertion procedure becomes complicated requiring cavity reaming and the plate shape is bulky preventing minimal invasive surgery
Solution Approach 1:
The invention extracts the blade portion from the traditional blade plate design, replacing it with a separate intramedullary nail that is inserted into the bone marrow cavity. This eliminates the need for complex cavity reaming and bulky plate structures, while maintaining stability through the nail-plate connection system
Solution Approach 2:
The fixation system is divided into separate functional components: an intramedullary nail for internal support, a plate for external fixation, and connecting elements that join them. This segmentation allows each component to be optimized independently and simplifies the insertion procedure
2Strength
If a strut screw is used to interlock and tension the blade and base portions, then the components are secured together, but stability against distortion of the fracture is not provided
Solution Approach 1:
The invention merges the functions of the intramedullary nail and the plate through connecting elements, creating a unified fixation system that provides both component interlocking and fracture stability. The combined system resists distortion forces more effectively than separate components
3Strength
If a bulky plate shape is used to provide structural support, then structural strength is improved, but the system cannot be implanted using minimal invasive surgery technique
Solution Approach 1:
The plate is designed with a thin, flexible profile that can be inserted through small incisions using minimal invasive techniques. Despite the reduced thickness, the plate maintains structural strength through optimized geometry and material properties, eliminating the need for bulky structures
4Reliability
If conventional plate systems are used for proximal humerus fractures, then fixation is provided, but the system does not provide good stability against high forces and distortion caused by muscle dragging
Solution Approach 1:
The invention adds the intramedullary nail dimension inside the bone, working in conjunction with the external plate to create a three-dimensional fixation system. This multi-dimensional approach distributes and resists muscle forces more effectively than conventional two-dimensional plate systems
Data Source
AI summary
The present invention relates to an osteosynthesis system (1) comprising at least one bone plate (2), at least one blade (3) and at least one bone anchor (4). The blade (3) is configured such as to be insertable at a predefined angle (α) in relation to the bone plate (2) through a through hole (8) provided on a first longitudinal portion (6) of said bone plate (2) and into a bone. The blade (3) comprises at least one opening (9) which is configured such as to be aligned with at least one bone anchor hole (5) provided on a second part (7) of the bone plate (2) when the blade (3) is fully inserted into said through hole (8), such that the bone anchor (4) may be inserted through said bone anchor hole (5) and said opening (9).