Advanced Implantable Drug Delivery Systems via Continuous Manufacturing

Area of Science:

• Pharmaceutical Sciences
• Biomaterials Engineering
• Drug Delivery Systems

Background:

• Polymeric implants are advanced drug delivery systems for systemic administration of therapeutic agents.
• These systems enhance drug bioavailability and offer prolonged release (months to years), improving patient compliance.
• They are particularly beneficial for poorly bioavailable or rapidly metabolized compounds.

Purpose of the Study:

• To highlight the potential of polymeric implantable drug delivery systems.
• To emphasize the role of continuous manufacturing technologies, specifically hot-melt extrusion (HME), in implant fabrication.
• To discuss the advantages of HME for producing stable, long-term drug-eluting implants.

Main Methods:

• Utilizing continuous manufacturing, specifically hot-melt extrusion (HME), for fabricating single-unit polymeric implants.
• Applying heat and mechanical shear during HME to ensure the stability of thermolabile therapeutics (e.g., proteins).
• Leveraging HME's solvent-free, scalable, and economically viable processing.

Main Results:

• Successful preparation of drug-loaded single-unit polymeric implants using HME.
• Demonstrated stability of thermolabile drugs within implants manufactured via HME.
• HME offers a versatile and efficient method for implant production.

Conclusions:

• Polymeric implants produced by HME are effective for sustained systemic drug delivery.
• HME is a key technology for developing advanced, patient-compliant drug delivery solutions.
• The FDA recognizes HME from a quality-by-design (QbD) perspective for implant manufacturing.