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

still from Embodied Intelligence video
still from Embodied Intelligence video

These weird virtual creatures evolve their bodies to solve problems

They show how intelligence and body plans are closely linked—and could unlock AI for robots.

conceptual illustration showing various women's faces being scanned
conceptual illustration showing various women's faces being scanned

A horrifying new AI app swaps women into porn videos with a click

Deepfake researchers have long feared the day this would arrive.

protein structures
protein structures

DeepMind says it will release the structure of every protein known to science

The company has already used its protein-folding AI, AlphaFold, to generate structures for the human proteome, as well as yeast, fruit flies, mice, and more.

Stay connected

Illustration by Rose WongIllustration 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.