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Reed Relays Eliminate Surgical Instruments Left Behind After Surgery


Every year billions of dollars are paid out for malpractice suits against practicing medical doctors. Most of these suits involve medical procedures or operations where a problem occurs during surgery. Since blood is ever abundant during surgery it can obscure the area being worked on. Sponges are used to soak up blood pools to facilitate the surgery. These blood saturated sponges placed between tissue can be left behind after the operation is complete. Of course, many times this gives rise to post surgical complications and sometimes death.  Medical electronic designers have come up with a clever way of detecting these sponges potentially left behind in conjunction with using Standex Electronics’s CRF reed relays

Full Application Write Up
Operating Rooms - Reed Relays



  • High reliability
  • Ideal RF characteristics
  • Ideal for carrying fast digital pulses with skew rates less than 200 picoseconds
  • Ability to carry RF signals from DC up to 7 GHz
  • 50Ω characteristic impedance
  • Switch to shield capacitance 0.5 picofarads typ.
  • Dielectric strength across the contacts 200 volts
  • Contacts dynamically tested
  • Surface mounted
  • Very low profile
  • BGA’s available
  • Rugged thermoset over-molded packaging
  • Qual-shield arrangement


CRFW4.40.173 CRF Reed Relay

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