St Jude Nanostim Wireless Pacemaker

Leadless Pacemaker Nanostim
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St Jude Medical introduce the Nanostim™ leadless pacemaker, the world’s first, commercially available leadless pacemaker.

St Jude Medical have announced that their leadless pacemaker the ‘Nanostim’ has been given CE mark approval for sale in Europe.
Nanostim Leadless Pacemaker
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The Nanostim leadless pacemaker (pictured above left) will be deployed into the right ventricle (RV) via the femoral artery and does not require any leads. Instead the device is fixed and confined to the right ventricle.
With leads being the most problematic component of a pacemaker device (statistics to come) this is an exciting development in the world of pacing.
The Nanostim has one steroid eluting electrode that screws into the myocardium not unlike an active fix lead. This end is fixed to the myocardium (heart muscle) the other is unattached.
Basic Credentials
– The St Jude Nanostim is Only VVI and VVIR
So the device will only be able to sense and pace in the right ventricle, this makes it suitable:-
Chronic atrial fibrillation with 2 or 3° AV or bifascicular bundle branch block (BBB), Normal sinus rhythm with 2 or 3° AV or BBB block and a low level of physical activity or short expected lifespan, or
Sinus bradycardia with infrequent pauses or unexplained syncope with EP findings.
 – Nanostim Battery life 
St Jude offer a 10 Year Battery Warranty
– Nanostim Follow Up
The Nanostim Leadless Pacemaker is compatible with the current St Jude Merlin Patient Care System and will use the same User Interface as current VVI devices.
In Summary it looks very promising in reducing complications during and post implant, whilst not having an effect on device longevity or pacemaker follow ups!

A complete explanation of these topics and more is available in the book Pacemakers Made Easy by Carl Robinson.

I hope it lives up to its billing!
Further Information
Information Credit: ST Jude Medical

Comments 6

  1. I applaud St Jude for tech innovation; but really? They seem to suggest putting the stimulating electrode in the right ventricular apex. According to current literature, there are serious deleterious consequences for patients who are paced a lot in that anatomical position. It's not appropriate to bypass the cardiac conduction system, now that permanent His bundle pacing has established a toehold. (Regarding apical pacing, don't expect regulatory bureaucracies to protect patients from this academic folly either.)

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