Impella heart pump

HI, Has anyone on here, or someone you know, ever had an Impella device placed? It's claim is that it's the world's smallest heart pump. It takes over 50% or more of your heart function. I had one placed on 03/07/17. They left it in maybe 2-3 days. I was pretty out of it so I'm not sure how long it was there. They make an incision in your groin, just like a heart cath. They run it up to your heart, and it takes over your heart function. After it was removed, and up to today's date, 03/28/17, my leg has been completely numb on the surface, and very painful just below the surface. Has anyone had any experience with the Impella device? I am just curious as to any side effects or lack there of that anyone has had. Please help. I did not find the right solution from the internet. References: https://supportnetwork.heart.org/connect-with-people-like-me/heart/heart-failure/impella-heart-pump/ Video Animation Production Agency Thanks!