Engineering Innovation Podcast and Radio Series

Needle-Free Injections

PostedMarch 18, 2007

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Randy Atkins:  An alternative to syringe needles is jet injection, which shoots the dose through the skin using sheer velocity.  But sometimes it goes too deep.

Samir Mitragotri:  Because of bleeding and pain issues, they are not very commonly used.

Randy Atkins:  Samir Mitragotri, a University of California chemical engineer, is re-designing the needle-free idea.

Samir Mitragotri:  Instead of delivering a large single jet, we are delivering small pulses of jets.

Randy Atkins:  Each so small that it can’t go very deep.  But Mitragotri says enough of them can give a full dose, especially because its shallow target in the skin is a prime antibody producing area.

Samir Mitragotri:  You can get a much better immune response for the same amount of vaccine.

Randy Atkins:  With the National Academy of Engineering, Randy Atkins, WTOP Radio.