Bone Implant Composition with Ceramic Particles for Defect Healing
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Solution Overview
Problem
Commercial synthetic bone grafts often suffer from underperformed biocompatibility and rapid degradation, leading to insufficient adhesion with new bone cells and impaired healing in bone defects.
Innovation Solution
A bone implant composition comprising 50-70% ceramic particles of tricalcium phosphate and bioactive glass, which promotes adhesion and growth of new bone cells, even after carrier degradation, with high porosity and appropriate sizes for attachment and growth support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If commercial synthetic bone graft is used, then osteoconduction and osteoinduction are effective, but biocompatibility is underperformed and degradation is fast
Solution Approach 1:
The patent uses a composite material system combining tricalcium phosphate ceramic particles (50-70 wt%) with a carrier material to create a synthetic bone graft that achieves both fast degradation and high biocompatibility. The ceramic particles provide osteoconduction and osteoinduction while the composite structure controls degradation rate and enhances cellular adhesion, resolving the contradiction between rapid degradation and sustained biocompatibility.
2Ease of operation
If granular or massive synthetic bone graft is used, then osteoconduction and osteoinduction are effective, but it is hard to fit into specific bone defect
Solution Approach 1:
The patent changes the physical state parameter of the synthetic bone graft from rigid granular or massive forms to a putty-like consistency by adjusting the carrier material composition and ceramic particle distribution. This allows the material to be molded into specific shapes during surgery while maintaining the chemical composition necessary for osteoconduction and osteoinduction, thus achieving both ease of operation and shape control.
3Reliability
If carrier degrades within short time, then biocompatibility improves, but structural support is insufficient for bone cell growth
Solution Approach 1:
The patent applies preliminary action by ensuring that ceramic particles are densely packed and properly distributed within the carrier structure before implantation. This pre-arranged configuration provides immediate structural support upon implantation, while the carrier's controlled degradation releases ceramic particles that continue to provide osteoconduction and osteoinduction, thus maintaining both structural support and biocompatibility over time.
Solution Approach 2:
The composite structure of ceramic particles embedded in a degradable carrier allows the system to exhibit dual behavior: the carrier provides initial structural support and biocompatibility, while the ceramic particles provide long-term osteoconduction and osteoinduction. As the carrier degrades, the ceramic particles maintain structural integrity and continue to support bone cell growth, resolving the contradiction between fast degradation and sustained structural support.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition enhances bone healing by maintaining structural support and promoting new bone growth, demonstrating improved biocompatibility and handleability for surgical use.
Implementation Method 1
the tricalcium phosphate can induce adhesion and growth of new bone cells
Implementation Method 2
the bioactive glass can induce growth factors and promotes growth of new bone cells
Implementation Method 3
it still construct supports even if carrier was degraded within a short time after implanted, which is beneficial for adhesion and growth of new bone cells
Data Source
AI summary
This present invention discloses a bone implant composition which comprises about 50˜70% by weight of ceramic particles, wherein the ceramic particles composes tricalcium phosphate and bioactive glass; and about 30˜50% by weight of carrier. The carrier provides good ability of operation and shaping, so the bone implant composition can be filled into a human body by various shapes. Because of high ratio of ceramic particles, it can still construct supports even if carrier is degraded within a short time after implanted, which is beneficial for adhesion and growth of new bone cells, and also promotes healing of bone defect.