Bone Regeneration Cover Piece With Integrated Fixation
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Solution Overview
Problem
Current bone regeneration methods for moderate-sized jaw bone defects face challenges in simplifying implementation, minimizing trauma to the jaw bone, and ensuring optimal bone regeneration, particularly due to the need for multiple fixation points and complications with existing cover membranes and plates.
Innovation Solution
A bone regeneration system that includes an anchor foot for endosteal installation, an optional cover membrane, and a device with an external pillar and cover piece that inhibits relative movement, allowing for anti-rotational fixation without screws through the bone defect, using titanium components for rigidity and flexibility to manage bone regeneration volume effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a cover plate is used to guide bone regeneration volume, then the volume control is optimized, but the structure requires multiple fixation points that generate bone trauma and complicate removal
Solution Approach 1:
The invention extracts the fixation function from the bone surrounding the defect and relocates it to the cover piece itself. The cover piece includes integrated fixation elements (such as teeth or protrusions) that engage with the bone defect margins, eliminating the need for separate fixation screws that would create additional trauma. This separation of functions allows the cover piece to both guide regeneration volume and secure itself without external fixation points.
Solution Approach 2:
The invention merges the cover piece and fixation elements into a single integrated component. The cover piece includes built-in fixation structures (teeth, protrusions, or interlocking features) that are part of the same piece, eliminating the need for separate fixation screws. This integration reduces the number of surgical steps and eliminates additional bone trauma from multiple fixation points while maintaining volume control capability.
2Reliability
If multiple fixation screws are used to secure the cover membrane or plate, then the maintenance is ensured, but the implementation complexity increases and bone trauma is amplified
Solution Approach 1:
The invention extracts the fixation function from external screws and relocates it to the cover piece itself. The cover piece includes integrated fixation elements (such as teeth or protrusions) that engage with the bone defect margins, eliminating the need for separate fixation screws that would create additional trauma. This separation of functions allows the cover piece to both guide regeneration volume and secure itself without external fixation points.
Solution Approach 2:
The cover piece is designed to secure itself to the bone defect margins through integrated fixation elements. The fixation teeth or protrusions on the cover piece engage directly with the bone, allowing the cover piece to maintain its position without requiring external fixation screws. This self-securing mechanism reduces implementation complexity while ensuring reliable maintenance.
3Reliability
If a cover membrane is used for bone regeneration, then the passage of nutrients is allowed and bone cells are not colonized, but the flexible nature makes it difficult to control the volume of bone regeneration
Solution Approach 1:
The invention applies different properties to different parts of the cover piece. The cover piece includes rigid portions that provide structural support and volume control, as well as flexible portions that allow nutrient passage and prevent bone cell colonization. This local differentiation of mechanical properties enables the single component to simultaneously achieve volume control and maintain the biological benefits of a membrane-like structure.
Solution Approach 2:
The cover piece may be constructed from composite materials or multi-layer structures that combine the rigidity needed for volume control with the flexibility needed for nutrient passage. This composite construction allows the cover piece to provide both mechanical support for precise volume control and biological compatibility for maintaining bone regeneration quality without cell colonization.
Data Source
AI summary
The present invention relates to a device intended to ensure the maintenance of a bone regeneration substitute (and if necessary of a cover membrane), on a bone defect of a moderate size in a jaw bone of a patient comprising a single piece formed by (1) an external pillar which is intended to be fixed in the anchor foot within the jaw bone, which external pillar comprises anti-rotational means making it possible to inhibit the relative movements of the external pillar relative to the anchor foot and by (2) a cover piece to be placed on the bone regeneration substitute so as to delimit the volume of bone regeneration at said bone defect site in combination with said bone regeneration substitute said cover piece presenting a central part in the continuation of the external pillar, and at least 2 flexible elongated lateral extensions in the continuation of the central part, which does not comprise any orifice intended for positioning of a fixing screw, and whose axis intersects perpendicularly the central axis (AA), corresponding to the axis crossing the central part and the anchor foot.