Deep penetration lancets or lancing device?

I'm 43 and have had Type 1 since I was 6 years old. I have developed some serious callouses on my fingers and am having trouble getting a sample, let alone a big enough sample. I am actually having to do it manually, which is no fun. :(

Does anyone know of a solution to this? I have tried using a pumice stone on the callouses to no avail. Maybe a special deep penetration lancing device or lancets?

 

The lancing device that I use has a depth dial that you can set.  For example, the skin is thicker on my thumbs and forefingers, so I use the 5 setting.  For all other fingers, I use the 3 setting.  The one I have is made by Accu-Chek, but I think there are other manufacturers also.  Hope this helps!

I use the one that comes with the One Touch meters...on the deepest (9) setting. Not deep enough.

I did some searching and found a lancet called Unistix 2 by Lifescan.  Also, the new lancing devices from Accu-Chek go up to 11.