Biodegradable Polymer Conduits for Controlled and Sustained Drug Delivery

This invention is a novel biodegradable polymer conduit designed to deliver therapeutic agents locally over extended periods to promote tissue regeneration and healing. By integrating advanced drug-delivery mechanisms directly into the structural matrix, this technology eliminates the need for repeated interventions and enhances the body's natural recovery processes.

Description

This technology encompasses the design and fabrication of biodegradable conduits constructed from polymers such as poly(lactic-co-glycolic acid) (PLGA) and poly(lactic acid) (PLA). These conduits incorporate double-walled microspheres that serve as reservoirs for therapeutic agents, facilitating precise, controlled drug release over extended durations, typically up to or exceeding 60 days. The double-walled architecture of the microspheres enables modulation of the release kinetics, thereby maintaining sustained delivery profiles suited to the physiological requirements of nerve tissue repair. The conduits are engineered to provide mechanical support that mimics native nerve structures while biodegrading in synchrony with tissue regeneration. Materials and methods outlined include advanced polymer processing techniques to optimize microsphere integration and ensure structural integrity. The technology further incorporates a range of bioactive compounds such as neurotrophic growth factors and anti-inflammatory agents that can be tailored to address specific pathological conditions or injury severities, enhancing the versatility and therapeutic efficacy of the device.

Applications

- Treatment of peripheral nerve injuries requiring guided regeneration and localized therapy.
- Post-surgical nerve repair to reduce inflammation and enhance functional recovery.
- Targeted delivery of growth factors to promote axonal growth and remyelination.
- Potential application in microsurgical procedures necessitating biodegradable scaffolding combined with pharmacological modulation.
- Customizable drug delivery platforms for various neurodegenerative or traumatic conditions affecting peripheral nerves.

Advantages

- Controlled, Sustained Drug Release: The double-walled microspheres provide prolonged, predictable release profiles, reducing dosing frequency and maintaining therapeutic agent bioavailability over critical healing periods.
- Biodegradability: The conduits degrade synchronously with tissue regeneration, eliminating the need for secondary surgical removal and mitigating chronic foreign body responses.
- Mechanical Integrity: The polymer composition ensures the conduit maintains adequate structural support without compromising flexibility essential for nerve regeneration.
- Customization: The system allows for incorporation of a range of therapeutic agents tailored to individual patient needs and specific nerve injury types.
- Improved Regenerative Outcomes: By combining physical guidance with localized pharmacotherapy, the conduits address multiple barriers to effective nerve repair, potentially reducing complications and accelerating functional recovery.

Invention Readiness

The invention has progressed through initial material synthesis and in vitro characterization phases, demonstrating feasibility in polymer conduit fabrication and sustained release of therapeutic agents. Mechanical testing has validated the structural attributes requisite for nerve guidance conduits. Drug release kinetics have been established through systematic profiling, confirming extended, controlled delivery. Further in vivo studies are required to evaluate biocompatibility, degradation rates within physiological environments, and therapeutic efficacy in relevant animal models of peripheral nerve injury. Subsequent optimization and scale-up methodologies will facilitate transition toward clinical validation.

IP Status

Patent Pending