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Micra 

Transcatheter Pacing System

Micra Transcatheter Pacing System

Meet Micra

The miniaturized Micra™ Transcatheter Pacing System (TPS) is the world’s smallest pacemaker,1 delivered percutaneously via a minimally invasive approach, directly into the right ventricle without the use of leads.

  • Miniaturized, 93% smaller than conventional pacemakers2
  • Designed to eliminate pocket- and lead-related complications3
  • FDA approved for 1.5T or 3T MRI scans4
  • Ultra low-power circuit design delivers an estimated average 12-year battery longevity4
  • Resulted in 99.2% implant success rate, 0 dislodgements, 0 systemic infections in 725-patient global trial4
  • Reduced complications by 51% versus traditional pacemakers4

Micra Implant Procedure

The Micra Transcatheter Pacing System includes three elements:

Micra Pacing Capsule with FlexFix™ Nitinol Tines

  • Tines provide atraumatic and secure device placement
  • Two tines have 15 times the holding force necessary to hold the device in place5
  • Design minimizes tissue trauma during deployment, repositioning, and retrieval6
  • Optimal electrode tissue interface allows for low and stable chronic thresholds7


Micra Delivery Catheter 

  • 105-cm long catheter system with a handle that controls deflection and deployment of the Micra Pacing Capsule

Micra Delivery Catheter


Micra Introducer

  • Lubricious hydrophilic coating facilitates smooth vessel entry 
  • 23 Fr inner diameter (27 Fr outer diameter)
  • Silicone-oil-coated dilator tip

Micra Introducer

INTEGRATED DELIVERY SYSTEM:

implant-procedure

Delivery catheter provides visual feedback when adequate tip pressure has been achieved and retracts during deployment.8

implant-procedure

Linear one-step deployment facilitates consistent capsule placement, no torque required.8

Device Life Cycle Management Options

  • Micra can be turned off and an additional Micra can be added.
  • Micra can be turned off and a traditional system or upgrade can be implanted.
  • Micra takes up <1% of the volume of a normal right ventricle.
  • The Micra design incorporates a proximal retrieval feature to enable acute retrieval.

References

1

Nippoldt, Doug; Whiting, Jon. Micra Transcatheter Pacing System: Device Volume Characterization Comparison. November 2014. Medtronic Data on File.

2

Williams, Eric, Whiting Jon; Micra Transcatheter Pacing System Size Comparison, November 2014, Medtronic Data on File.

3

Udo EO, Zuithoff NP, van Hemel NM, et al. Incidence and predictors of short- and long-term complications in pacemaker therapy: the FOLLOWPACE study. Heart Rhythm. May 2012;9(5):728-735.

4

Reynolds DW, Duray GZ, Omar R, et al. A Leadless Intracardiac Transcatheter Pacing System. N Engl J Med. Published online November 9, 2015.

5

Eggen M, Grubac V, Bonner M. Design and Evaluation of a Novel Fixation Mechanism for a Transcatheter Pacemaker. IEEE Trans Biomed Eng. September 2015;62(9):2316-2323.

6

Eggen, Mike. FlexFix Tine Design. April 2015. Medtronic Data on File.

7

Bonner M, Eggen M, Haddad T, Sheldon T, Williams E. Early Performance and Safety of the Micra Transcatheter Pacemaker in Pigs. Pacing Clin Electrophysiol. November 2015;38(11):1248-1259.

8

Medtronic Micra Implant Manual, April, 2015