Carbon Fiber Composite Artificial Bone with Spring-Like Frame
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Solution Overview
Problem
Carbon/carbon composite artificial bones lack elastic deformation and bending modeling capabilities, limiting their application scope.
Innovation Solution
A carbon fiber composite artificial bone with a spring-like frame and plate dowel structure, utilizing carbon fiber weaving technology and profiling, enabling 360° bending and enhanced mechanical properties for cartilage-like functions and tissue fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If carbon/carbon composite is used for artificial bone, then mechanical strength and biocompatibility are improved, but elastic deformation capability and bending modeling are lost
Solution Approach 1:
The patent applies a flexible coating layer on the carbon/carbon composite artificial bone surface. This coating layer, which can be made of polymer materials or bioactive glass, provides the necessary flexibility and elastic deformation capability while the underlying carbon/carbon composite core maintains high mechanical strength. The multi-layer structure allows the artificial bone to bend and adapt to complex anatomical shapes, resolving the contradiction between strength and flexibility.
Solution Approach 2:
The patent creates a composite structure by combining carbon/carbon composite material with flexible coating materials or bioactive glass layers. This composite approach allows each layer to contribute its superior properties: the carbon/carbon core provides strength and stiffness, while the outer coating or glass layer provides flexibility, elasticity, and bioactivity. This resolves the technical contradiction by integrating materials with complementary properties.
2Reliability
If traditional artificial bone materials (metal, ceramic, polymer) are used, then specific advantages are achieved, but significant disadvantages remain such as corrosion, brittleness, or poor mechanical properties
Solution Approach 1:
The patent applies different materials and surface treatments to different regions of the artificial bone. The carbon/carbon composite core provides overall structural stability and corrosion resistance, while specific surface regions are treated with coatings or bioactive glass to enhance osteointegration and reduce bone absorption. This localized differentiation allows each region to perform its specific function optimally, resolving the contradiction between stability and harmful biological reactions.
Solution Approach 2:
The patent uses composite material structures where carbon/carbon composite is combined with biocompatible coatings or bioactive glass layers. This composite approach eliminates the harmful effects of single materials: metal corrosion is prevented by the carbon core and protective coatings, ceramic brittleness is overcome by the composite structure, and polymer degradation is avoided by using the stable carbon base. The result is an artificial bone with superior reliability and reduced harmful factors.
3Adaptability or versatility
If carbon fiber is woven into spring-like frame structure, then elastic deformation and bending capability are achieved, but manufacturing complexity increases
Solution Approach 1:
The patent employs spring-like curved structures in the carbon fiber weaving pattern. These pre-formed curved and coiled carbon fiber arrangements inherently provide elastic deformation capability and bending flexibility. By designing the carbon fiber to follow spring-like geometries during the weaving process, the artificial bone gains adaptability to complex anatomical shapes without requiring overly complex multi-layer coatings or assemblies, thus balancing bending capability with manufacturability.
Data Source
AI summary
The invention discloses a carbon fiber composite artificial bone and a preparation method thereof. The artificial bone includes a carbon fiber composite spring-like frame or includes a carbon fiber composite spring-like frame and a carbon fiber composite plate dowel, and the carbon fiber composite plate dowel is inserted into one end or both ends of a cavity of the spring-like frame or penetrates through the cavity of the carbon fiber composite spring-like frame. The preparation method includes: preparing a spring-like carbon fiber preform through a weaving technology by using carbon fibers as a raw material, performing densification and high-temperature purification treatment and preparing a wear-resistant coating to obtain the carbon fiber composite spring-like frame; and combining the carbon fiber composite spring-like frame with the carbon fiber composite plate bowel to obtain the artificial bone.