Porous Implantable Devices for Localized Drug Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current therapeutic delivery methods are invasive, lack precision, and cause systemic side effects due to their inability to target specific disease regions effectively, especially in complex systems like the central nervous and ocular systems, where existing implantable devices are obtrusive and not customizable for individual patient needs.
Innovation Solution
Development of micron-sized, porous implantable devices with a three-dimensional porous outer wall fabricated using two-photon polymerization techniques, allowing for precise placement and localized release of therapeutic agents directly into target tissues, customizable in design and material to suit individual patient needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If systemic pharmacological delivery is used, then therapeutic agents can be delivered throughout the body, but side effects increase and precision of targeting decreases
Solution Approach 1:
The patent extracts the therapeutic delivery function from systemic circulation and localizes it to a specific implantable device at the target site. The device houses therapeutic agents in an interior void and releases them locally through a porous outer wall, eliminating the need for systemic distribution and thereby reducing side effects while maintaining effective local concentration.
Solution Approach 2:
The implantable device provides localized therapeutic delivery with spatially controlled release through the porous outer wall. The device structure enables concentration of therapeutic agents at the specific target location (e.g., tumor site) while surrounding healthy tissues receive minimal exposure, achieving local quality enhancement without systemic side effects.
2Measurement precision
If current implantable devices are used, then therapeutic delivery can be localized, but device size becomes obtrusive and invasiveness increases
Solution Approach 1:
The implantable device is designed with a nested structure where the porous outer wall encloses an interior void that houses the therapeutic agent and carrier material. This nested configuration allows the device to maintain precise therapeutic delivery capability while minimizing overall device volume, enabling delivery through small incisions or needle punctures without requiring large invasive implants.
Solution Approach 2:
The porous outer wall functions as a thin, flexible barrier that enables localized therapeutic release while maintaining a compact device structure. The wall's porous structure provides controlled release capability without requiring thick protective housings, thereby reducing device size and invasiveness while preserving precision delivery.
3Adaptability or versatility
If current implantable devices are used, then therapeutic delivery can be achieved, but customization for individual patient needs is limited
Solution Approach 1:
The patent enables customization by allowing modification of key device parameters including porous outer wall porosity and thickness, interior void volume, and carrier material composition. These parameter changes can be tailored to individual patient needs, disease characteristics, and therapeutic requirements without fundamentally redesigning the device architecture, thus achieving adaptability without excessive complexity.
Solution Approach 2:
The implantable device employs a universal platform design where the porous outer wall structure and interior void configuration can accommodate different therapeutic agents, carrier materials, and release kinetics. This multi-functional capability allows a single device design to be customized for various patient needs by changing the contained materials and structural parameters rather than requiring entirely different device designs.
4Ease of operation
If porous outer wall structure is used, then localized release of therapeutic agents is enabled, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes a porous outer wall structure where controlled porosity enables localized therapeutic release. The porous structure allows therapeutic agents to diffuse from the interior void to the surrounding tissue while maintaining device integrity. Standard manufacturing techniques can achieve the required porosity levels without excessive precision requirements by using established porous material fabrication methods.
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
Enables highly localized and controlled delivery of therapeutic agents, minimizing side effects and maximizing efficacy by providing pinpoint precision and flexibility in design and material selection, suitable for complex tissues like the brain and eyes.
Implementation Method 1
The implantable devices are made by patterning at least a portion of a polymerizable substrate into a polymerized three-dimensional porous outer wall, for example, using two photon polymerization techniques.
Data Source
AI summary
Porous implantable devices for housing one or more therapeutic agents are disclosed herein. The implantable devices include a porous outer wall defining an interia or void. The interior void houses a carrier material carrying a first therapeutic agent. The implantable devices are made by patterning at least a portion of a polymerizable substrate into a polymerized three-dimensional porous outer wall surrounding an interior void. This can be achieved by two-photon polymerization techniques. A first therapeutic agent is then added to the interior void, which is then sealed. Methods of treating diseases using the implantable devices are disclosed herein. The methods include implanting the implantable device at a target area and locally releasing a therapeutically effective dosage of a first therapeutic agent from the interior void. The implantable devices can also be used in methods of screening potentially therapeutic agents for desired biological responses.