Medtronic warns on external pacemaker issues


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Medtronic (NYSE:MDT) has released an urgent field safety notice warning of issues with a subset of its model 53401 single chamber external pacemakers in which the device may experience an unexpected power on reset.

The Fridley, Minn.–based company said that the issue is due to an initial version of the firmware for the device which allowed for an unused, unterminated digital input/output pin to act as an input. The unterminated pin was found to act as an antenna to detect external electrical signals, despite the device expecting it to be silent, according to the notice.

Upon detecting an electrical signal, the firmware may lock up and cause a power on reset, which will cause the device to stop functioning for approximately seven seconds while it reboots, according to the field safety notice.

Get the full story on our sister site MassDevice.

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