There's AICD, which is a automatic implantable cardioverter defibrillator. And that actually has a pacemaker-like generator and then wires that go inside the heart. And the wires is part of the hardware that can get infected, that can get complicated, okay. So as much as possible, we like to avoid wires inplanted in the heart. So that's why we have an alternative to AICD called SICD, which is actually just a generator that sits closer to the heart that has the ability to deliver enough electricity to the heart, that shocks the patient. And the advantage there is, there are no wires actually implanted inside the heart.
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