MgO Osteostimulative Coating for Bone Implant Integration
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Solution Overview
Problem
Current bone implant technologies face issues with implant loosening due to inadequate bone-implant integration, complications from non-absorbable materials like PMMA, and the need for immediate application of osteostimulative materials, which increases procedure time and risk of uneven application.
Innovation Solution
A bone-implantable device with an exterior surface coated in a cured MgO-containing osteostimulative material that provides both osteoconductive and osteoinductive properties, allowing for enhanced bone ingrowth and integration, and is bioresorbable, reducing the need for immediate application and improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If PMMA bone cement is used to anchor implant to bone, then the implant can be secured to bone, but thermal necrosis from curing process and non-absorbability lead to interface failures and implant loosening
Solution Approach 1:
The patent changes the material parameters from non-absorbable PMMA to bioresorbable calcium phosphate cement, which eliminates thermal necrosis and allows gradual load transfer to growing bone, thereby improving interface reliability while maintaining anchoring strength
Solution Approach 2:
The patent uses a composite formulation combining calcium phosphate cement with osteostimulative materials (such as BMP-2, RANKL, or OPG) to create a multi-functional material that provides both mechanical anchoring and biological stimulation for enhanced bone integration
2Reliability
If calcium phosphate cement is used to fill gaps and provide osteoconduction, then bone healing is promoted, but the material lacks adhesive properties and has long absorption time
Solution Approach 1:
The patent formulates a composite material combining calcium phosphate cement with adhesive components and osteostimulative agents, creating a multi-functional material that simultaneously provides adhesion, osteoconduction, and controlled resorption
Solution Approach 2:
The calcium phosphate cement formulation is designed to perform multiple functions: mechanical adhesion to bone, gap filling, osteoconduction, and controlled resorption, all in a single material application
3Reliability
If osteostimulative material is applied immediately before implantation, then bone integration is enhanced, but procedure time increases and uneven application risk increases
Solution Approach 1:
The patent merges the osteostimulative material with the implant structure itself, creating a pre-coated implant that combines the implant function with the osteostimulative function in a single component, eliminating separate application steps
Solution Approach 2:
The osteostimulative material is pre-applied and cured on the implant surface before surgery, allowing the implant to be ready for immediate use without requiring intraoperative material application or curing time
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 MgO-containing osteostimulative material enhances bone-implant integration, provides mechanical strength, and is resorbed over time, firmly embedding the device, thus reducing the risk of implant loosening and simplifying surgical procedures by allowing pre-coated devices.
Implementation Method 1
act as an osteoconductive medium
Implementation Method 2
provide both osteoconductive and osteoinductive properties
Implementation Method 3
a material should adhere implant to bone, tolerate and transfer loads on the implant to bone
Implementation Method 4
be readily absorbed at a rate that allows adequate time for osseointegration
Data Source
AI summary
The present disclosure provides a bone-implantable device and methods of use. The bone-implantable device comprises a body having an exterior surface, wherein a portion of the exterior surface includes a cured osteostimulative material comprising MgO.