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A robust and refillable magnetic sponge capsule for remotely triggered drug release
Jingru Shi1, Hongbin Zhang, John Jackson
1Department of Mechanical Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada. izhanghongbin@gmail.com muchiao@mech.ubc.ca.
Journal of Materials Chemistry. B
|April 9, 2020
Summary
This study introduces a novel refillable magnetic capsule for sustained drug delivery. The device uses magnetic fields to control drug release, overcoming limitations of single-use systems.
Area of Science:
- Biomaterials Science
- Drug Delivery Systems
- Nanotechnology
Background:
- Existing drug delivery systems often have limited service lives due to payload depletion and lack refill capabilities.
- Single-use devices necessitate frequent replacement, increasing costs and inconvenience.
Purpose of the Study:
- To develop a refillable drug delivery capsule using a magnetic porous polydimethylsiloxane (PDMS) scaffold.
- To demonstrate remote, controlled drug release from the capsule using external magnetic stimuli.
Main Methods:
- Fabrication of a magnetic porous PDMS capsule with an internal cavity for drug storage.
- Utilizing the magnetic field-induced reversible deformation of the PDMS structure to generate a pumping force.
- Testing the capsule's efficacy with both low (methylene blue) and high (bovine serum albumin) molecular weight model drugs.
Main Results:
- Successful demonstration of a refillable drug delivery system.
- Controlled drug release achieved through external magnetic field manipulation.
- The capsule's operational principle verified using diverse molecular weight compounds.
Conclusions:
- The proposed refillable magnetic porous capsule offers a promising solution for sustained and remotely controlled local drug administration.
- This proof-of-concept study highlights the potential of magnetic stimuli-responsive materials in advanced drug delivery applications.