Medicine: Capsules, may 6, 1957

¶ Not content with an FM transmitter so small that it can be swallowed for broadcasting from inside the digestive tract (TIME, April 22), medical research-TS and electronics designers have produced a microphone so small that it can be put in the end of a catheter (flexible tube) and worked through a blood vessel right into the heart. Developed by New Jersey's Gulton Industries, Inc., the microphone is one-twentieth of an inch in diameter, three-quarters of an inch long. Dr. Howard L. Moscovitz of Manhattan's Mt. Sinai Hospital has used it to diagnose heart defects-by placing it next to heart valves...

Want the full story?

Subscribe Now


Get TIME the way you want it

  • One Week Digital Pass — $4.99
  • Monthly Pay-As-You-Go DIGITAL ACCESS$2.99
  • One Year ALL ACCESSJust $30!   Best Deal!
    Print Magazine + Digital Edition + Subscriber-only Content on

Learn more about the benefits of being a TIME subscriber

If you are already a subscriber sign up — registration is free!