Historically, non-volatile memory devices, such as EEPROMs, have not been able to survive medical sterilization by gamma or e-beam radiation methods. This forced medical disposable manufacturers who wanted to limit the use of their devices to choose a sterilization method other than gamma or e-beam, or to employ a mechanical limit-use feature. The GammaSafe memory token allows medical device manufacturers to electronically limit the use of their disposables by tracking usage information on the memory token’s non-volatile memory, even if they sterilize using gamma or e-beam radiation.
“The GammaSafe memory token is an external memory device, so it can easily be added to existing medical disposables, without changing their designs,” said Paul Plitzuweit, business development engineer for GammaSafe product line. “With the ability to sterilize via gamma or e-beam, the GammaSafe product gives medical OEMs the ability to reduce their sterilization time and costs, while still protecting their devices against counterfeits and overuse.”
The GammaSafe portable memory token contains four kilobits of non-volatile, reprogrammable memory, and has been proven to withstand up to 45kGy (4.5Mrad) of gamma or e-beam radiation with no data loss or impact on functionality. The memory token functions similar to an EEPROM device and uses an SPI serial interface for communications.