As the device market advances, each new generation of neurostimulator will most likely be smaller in size than the previous. Shown here is one of the latest IPG neurostimulation devices (2009), as it compares to a U.S. silver dollar. As you can see, it is just a bit larger than the coin. This model weighs about 1 ounce and is 10 millimeters in thickness. Models produced by different manufacturers vary slightly in their dimensions.