PEEK Implant Coating With Borate Glass for Bone Integration
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Solution Overview
Problem
PEEK implants face issues with poor osseointegration and lack of antibacterial properties, leading to implant failure and infection, despite their mechanical advantages.
Innovation Solution
A composite of PEEK resin coated with a bioactive light curing resin material that releases calcium and phosphate ions, forming a calcium phosphate-rich layer for improved integration with bone and exhibiting antibacterial effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If PEEK is used as an orthopedic implant material, then mechanical strength and corrosion resistance are improved, but osseointegration and cell attachment are poor
Solution Approach 1:
The patent combines PEEK polymer with bioactive glass particles to create a composite implant material. The PEEK provides mechanical strength and corrosion resistance, while the bioactive glass particles enable osseointegration and cell attachment through their ability to form hydroxyapatite layers and release bioactive ions.
Solution Approach 2:
The patent applies surface modification techniques including sulfonation treatment and hydroxyapatite coating only on the implant surface that contacts bone tissue. This localized treatment improves osseointegration at the bone interface while maintaining the bulk mechanical properties of the PEEK material.
2Reliability
If PEEK implant surface roughness is increased through sulfonation or sandblasting, then cell attachment is improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses sulfonation treatment to chemically modify the PEEK surface, changing its chemical composition and surface properties. This chemical parameter change creates a more favorable surface for cell attachment without requiring complex mechanical roughening processes.
Solution Approach 2:
The patent applies surface treatments like sulfonation and hydroxyapatite coating during the implant manufacturing process before implantation. This preliminary preparation of the surface ensures optimal cell attachment properties are established in advance, eliminating the need for complex post-manufacturing modifications.
3Ease of manufacture
If PEEK implants are used in craniocerebral reconstruction, then processing performance is improved, but infection risk increases due to poor antibacterial properties
Solution Approach 1:
The patent incorporates bioactive glass particles into the PEEK matrix to create a composite material that maintains the excellent processing performance of PEEK while adding antibacterial properties through ion release and improved surface characteristics that resist bacterial colonization.
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 composite provides enhanced osseointegration and antibacterial properties, ensuring stable integration and mechanical durability for orthopedic and dental implants.
Implementation Method 1
a bioactive light curing resin material capable of forming calcium phosphate rich crystals onto its surface, and which exert antibacterial effects through the release of its bioactive ions
Implementation Method 2
capable of forming calcium phosphate rich crystals onto its surface
Implementation Method 3
light curing borate adhesive system
Data Source
AI summary
A bioactive implant has a body formed from PEEK and includes a porous surface layer treated with sulfuric acid to form tiny holes that extend into the implant. Borate glass particles are adhered to the surface of the bioactive implant using a light curable 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) resin matrix. The bioactive implant can be used for both dental and orthopedic applications.