Skip to Content

Stent and Deliver

September 1, 2004

Drug-coated stents – wire-mesh tubes used to prop open clogged arteries – are a boon for heart disease sufferers. But in time, the body uses up the drug coating, which prevents scar tissue from blocking the artery again. Researchers at Drexel University in Philadelphia, PA, have developed a replenishable stent. Zachary Forbes, a biomedical engineering doctoral student, plated stents with a weak magnetic alloy. He and fellow grad student Benjamin Yellen then embedded the scar-preventing drugs in biodegradable magnetic nanospheres. To administer the drugs, doctors would inject the nanospheres and switch on an external magnetic field, causing the stent to capture the nanospheres. The scheme would let doctors readminister drugs throughout a patient’s (hopefully long) life, adjusting dosages or changing medication. Forbes and Yellen have formed Magnetic BioSystems to commercialize the invention.

Keep Reading

Most Popular

This startup wants to copy you into an embryo for organ harvesting

With plans to create realistic synthetic embryos, grown in jars, Renewal Bio is on a journey to the horizon of science and ethics.

VR is as good as psychedelics at helping people reach transcendence

On key metrics, a VR experience elicited a response indistinguishable from subjects who took medium doses of LSD or magic mushrooms.

This nanoparticle could be the key to a universal covid vaccine

Ending the covid pandemic might well require a vaccine that protects against any new strains. Researchers may have found a strategy that will work.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.