Anhydrous Bone Regeneration Composite for Gamma-Sterile Degradation Control
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Solution Overview
Problem
Existing biodegradable polymeric materials used as carriers for granular synthetic materials in bone regeneration are not resistant to gamma-radiation, have undesirable degradation rates, and lose osteoinductive properties due to moisture exposure, making them unsuitable for effective tissue regeneration.
Innovation Solution
A biocompatible composite material comprising a biodegradable polymeric material made of block copolymers with hydrophilic and hydrophobic blocks, which is anhydrous to maintain structural integrity and resistant to gamma-radiation, ensuring rapid degradation and osteoinductive properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional biodegradable polymeric materials are used as carriers, then the material can be degraded at the site of application, but the degradation rate is undesired and the material is not resistant to gamma-radiation
Solution Approach 1:
The patent modifies the chemical structure of the polymeric material by incorporating specific functional groups and cross-linking mechanisms that enhance gamma-radiation resistance while controlling degradation kinetics. The polymer composition is adjusted to achieve both radiation stability and appropriate degradation timing.
Solution Approach 2:
The invention creates a composite polymeric system combining multiple polymer components with complementary properties - one providing gamma-radiation resistance and another controlling degradation rate. This composite approach allows simultaneous optimization of both contradictory requirements.
2Ease of operation
If the polymeric material is exposed to moisture during storage, then the material becomes easier to process, but the granular synthetic material loses its osteoinductive properties
Solution Approach 1:
The patent divides the system into moisture-sensitive and moisture-stable components. The granular synthetic material is protected from moisture exposure through separate packaging or protective coatings, while the polymeric carrier is designed to absorb moisture only after the granular material is protected, enabling sequential activation of properties.
Solution Approach 2:
An intermediary protective layer or coating is introduced between the moisture environment and the granular synthetic material. This intermediary allows moisture to be present for polymer processing while preventing direct moisture contact with the osteoinductive granular material.
3Reliability
If the polymeric material degrades rapidly to retain reconstruction properties, then the osteoinductive properties are maintained, but the mechanical support is lost too early
Solution Approach 1:
The patent designs a dynamic degradation system where the polymeric material's mechanical properties and degradation rate change over time in a controlled manner. Initially, the material provides strong mechanical support, then gradually degrades to release osteoinductive signals, and finally completely breaks down. This temporal dynamic resolves the contradiction between maintaining strength and releasing osteoinductive properties.
Solution Approach 2:
The degradation process is designed to occur in distinct phases or periods: a first period providing mechanical support, a second period releasing osteoinductive properties, and a third period of complete degradation. This periodic action allows sequential fulfillment of contradictory requirements at different time points.
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 material effectively supports bone regeneration by maintaining osteoinductive properties, degrading within a suitable timeframe, and retaining mechanical properties despite sterilization, making it suitable for bone defect treatment.
Implementation Method 1
the polymeric material is resistant to gamma-radiation, ensuring rapid degradation and osteoinductive properties
Implementation Method 2
the composition of granular synthetic material and biodegradable polymeric material is anhydrous. When the biodegradable polymeric material is anhydrous, a composition of the biodegradable polymeric material and the granular synthetic material may be stored together for longer periods without losing the effectiveness of the granular synthetic material
Implementation Method 3
the polymeric material is preferably a biodegradable polymeric material... it is important that the polymeric material is rapidly degraded at the site of application
Data Source
AI summary
The invention is directed to biocompatible composite materials for medical applications such as tissue regeneration. In particular, the present invention is directed to biocompatible composite materials that may be used for the treatment of lost bone or bone defects. According to the invention there is provided an anhydrous biocompatible composite material comprising a biodegradable polymeric material and a granular synthetic material, wherein the polymeric material essentially consists of at least one block copolymer that comprises at least one hydrophilic block and at least one hydrophobic block.