Pre-formed 3D Membrane for Alveolar Bone Regeneration
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Solution Overview
Problem
Conventional guided bone regeneration (GBR) techniques require time-consuming trimming and bending of membranes, leading to potential bone defect adaptation issues, increased operation time, and risk of infection due to excessive protrusion and screw implantation, resulting in lower success rates and patient discomfort.
Innovation Solution
A pre-formed, three-dimensionally trimmed and bent membrane for alveolar bone regeneration with a coupling part, side bending part, and lateral covering parts that adapt to the bone defect shape, minimizing protrusion and reducing operation time, featuring specific hole patterns for flexibility and stability, and a surface coating for aesthetic purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the four-sided membrane is trimmed and bent during the operation, then the membrane can adapt to the bone defect shape, but the operation time is increased and the membrane may excessively protrude
Solution Approach 1:
The membrane is pre-formed with a three-dimensional shape that matches the bone defect geometry before the surgical procedure. This preliminary shaping includes pre-bending the membrane to conform to the curvature of the alveolar bone, eliminating the need for time-consuming intraoperative trimming and bending operations while ensuring proper adaptation to the defect area
2Adaptability or versatility
If the membrane is bent during the operation, then the membrane can adapt to the bone defect shape, but local areas excessively protrude and break through gingiva causing infection
Solution Approach 1:
The membrane is pre-formed with a three-dimensional shape that matches the bone defect geometry before the surgical procedure. This preliminary shaping includes pre-bending the membrane to conform to the curvature of the alveolar bone, eliminating the need for time-consuming intraoperative trimming and bending operations while ensuring proper adaptation to the defect area
Solution Approach 2:
The membrane features variable thickness distribution with thinner regions in areas requiring flexibility and thicker regions in areas requiring structural support. This non-uniform thickness profile prevents excessive protrusion in specific locations while maintaining adequate coverage and adaptation to the bone defect shape
3Stability of the object's composition
If a screw is used to fix the membrane, then the membrane is securely fixed, but a large area must be incised to remove the screw increasing operation time and causing swelling
Solution Approach 1:
The fixation mechanism is extracted from the membrane structure itself and replaced with inherent geometric interlocking features. The pre-formed three-dimensional shape includes engagement protrusions that fit into corresponding recesses in the bone graft material, eliminating the need for separate screw fixation devices and their associated incisions and removal procedures
Solution Approach 2:
The membrane's pre-formed three-dimensional shape provides self-fixation capability through geometric interlocking with the bone graft material. The membrane automatically secures itself in the correct position without requiring external fixation devices, simplifying both installation and removal procedures
Data Source
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AI summary
A membrane for alveolar bone regeneration to guide bone generation by adapting to a bone graft material, which fills a bone defect area, includes a central hole through which an implant is inserted into an alveolar bone, wherein the membrane includes: a coupling part to couple the membrane with the implant; a side bending part that is downwardly bent from the coupling part to have an overall curved shape with a gentle slope; and lateral covering parts that protrude from edges of the side bending part and are bent and curved toward an alveolar bone defect area, wherein the side bending part and the lateral covering parts are pre-formed in three-dimensions to fit a final shape of the alveolar bone that is to be regenerated.