Micra™ is the world's smallest pacemaker.1 Unlike most pacemakers that are placed in a patient's chest with leads running to the heart, Micra is a leadless pacemaker because it's implanted directly into the heart.
For most patients, the Micra design translates to fewer medical complications and fewer post-implant activity restrictions.
The Micra leadless pacemaker includes time-tested, valuable features, including:
Is Micra for every patient?
How is Micra placed into my heart?
Are MRI scans OK with my Micra?
Will items containing magnets affect my Micra?
Is it safe to go through an airport metal detector?
Are household appliances safe to use?
Can I exercise or resume my regular activities?
Does Micra last forever?
What happens when the Micra battery runs low?
How often will I need to visit the doctor after Micra is implanted?
Micra is intended for patients with specific pacing needs. Talk to your doctor about the benefits and risks of Micra.
Your doctor will insert a straw-like catheter into a vein in your upper thigh and use the catheter to move Micra into the right ventricle of your heart. The catheter is then removed.
Micra was designed, tested, and approved to be used safely with MRI scanners. You can undergo an MRI scan as long as patient eligibility requirements are met. Your pacemaker ID card specifies the implanted device model. If your doctor has questions about scanning eligibility, he or she should contact a Medtronic representative or Medtronic Technical Services.
Maybe. We recommend keeping items containing magnets at least 6 inches away from an implanted pacemaker. This includes mobile phones, magnetic therapy products, stereo speakers, and handheld massagers. We do not recommend putting a mobile phone in your shirt pocket or using magnetic mattress pads and pillows.
Yes, you can safely go through airport security with this device.
Yes, household appliances that are properly maintained and in good working order are safe. This includes microwave ovens, major appliances, electric blankets, and heating pads.
Yes, you should be able to return to your usual activities, as long you do not exceed your fitness level. Discuss questions about specific activities with your doctor.
No, Micra has a battery and the battery life depends on your heart condition. The estimated average longevity is between 8 and 13 years.3,4 Individual patient experience may vary. Your doctor will check on the battery when you come in for a checkup.
When a new device is needed, the Micra device may be either simply turned off or removed from the body before a new Micra device or traditional pacemaker system is implanted. Your doctor will determine what is best for you.5,6
Your doctor will decide how often he or she wants to see you. Typically, your first follow-up appointment is one month after implant, with additional follow-ups every 6–12 months.
Information on this site should not be used as a substitute for talking with your doctor. Always talk with your doctor about diagnosis and treatment information.
Nippoldt D, Whiting J. Micra Transcatheter Pacing System: Device Volume Characterization Comparison. November 2014. Medtronic data on file.
Williams E, Whiting J. Micra Transcatheter Pacing System Size Comparison. November 2014. Medtronic data on file.
Medtronic Micra™ AV MC1AVR1 Device Manual. January 2020.
Pender J, Whiting J. Micra AV Battery Longevity. January 2020. Medtronic data on file.
Medtronic Micra MC1VR01 Clinician Manual. November 2014.
Reynolds D, Duray GZ, Omar R, et al. A Leadless Intracardiac Transcatheter Pacing System. N Engl J Med. February 11, 2016;374(6):533-541.