Polymeric Material Drug Loading via Hardness Blending
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Solution Overview
Problem
The existing methods for incorporating therapeutic agents into polymeric materials for implantable medical devices face limitations in drug loading capacity, which is influenced by the hardness of the polymeric material and is affected by the timing of the post-cure processing step, leading to potential degradation of the agents.
Innovation Solution
Adjusting the drug loading capacity by impregnating therapeutic agents into polymeric materials prior to the post-cure processing step, allowing for increased loading capacity and controlling the amount of drug loaded, while also blending polymeric materials to achieve desired hardness and drug loading levels, thereby enhancing design flexibility and stability of the agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If drug loading capacity is increased by adjusting polymeric material hardness, then the amount of drug that can be loaded increases, but the mechanical properties and structural integrity of the polymeric material may deteriorate
Solution Approach 1:
The patent adjusts the hardness parameter of the polymeric material to optimize drug loading capacity. By controlling the hardness of the polymeric material, the invention achieves increased drug loading while maintaining structural integrity. This parameter optimization allows the polymeric material to accommodate higher drug concentrations without compromising its mechanical properties.
2Quantity of substance
If therapeutic agents are impregnated into polymeric materials prior to post-cure processing, then drug loading capacity increases, but the stability of therapeutic agents may deteriorate due to exposure to processing conditions
Solution Approach 1:
The patent incorporates therapeutic agents into the polymeric material before the post-cure processing step. This preliminary impregnation allows the drugs to be loaded into the polymeric structure while protecting them from degradation during subsequent processing. The timing of agent incorporation is optimized to maximize loading capacity while preserving agent stability.
3Adaptability or versatility
If polymeric materials are blended to achieve desired hardness and drug loading levels, then design flexibility increases, but the complexity of the manufacturing process increases
Solution Approach 1:
The patent utilizes blending of polymeric materials with different properties to achieve specific hardness and drug loading characteristics. By adjusting the composition ratios of blended polymers, the invention provides design flexibility to optimize performance for different applications while managing manufacturing complexity through systematic material selection.
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
This approach allows for increased drug loading capacity, improved design flexibility, and reduced agent degradation, resulting in more effective and stable therapeutic delivery for implantable medical devices.
Implementation Method 1
drug loading capacity can be adjusted by impregnating drug into the polymeric material
Data Source
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AI summary
A method of forming a blended polymeric material for an implantable medical device, said method, comprising selecting a predetennined drug loading capacity for an implantable medical device; selecting a first polymeric material having a first hardness; selecting a second polymeric material having a second hardness different from the first hardness; and blending the first polymeric material with the second polymeric material to obtain a blended polymeric material having the selected predetermined drug loading capacity.