Medtronic Micra: the world’s smallest pacemaker

Date:15 April 2014 Tags:, ,

A patient in Linz, Austria, was the first to receive what is now the world’s smallest pacemaker. At less than 25 mm long (one-tenth the size of a conventional pacemaker), the Medtronic Micra TPS pacemaker is inserted through a small incision in the thigh (so there’s no chest scarring) and threaded through veins to the patient’s chest, where it’s attached to the heart wall and can be repositioned or retrieved if needed.

Without wires connecting the pacemaker to the heart, the risk of infection and other complications are greatly reduced. Attached to the heart via small tines, the pacemaker delivers electrical impulses that pace the heart through an electrode at the end of the device.

This animation shows how the Micra is implanted in the heart…


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