asikkk/iStock via Getty Images Penumbra (NYSE:PEN) is a leader in the field of medical technology, with both vascular and neurological devices making a big splash in the improvement of care. The stock has been volatile over the past few years, with a peak of $340 in late June 2023 making way to a low of $148 recently. Now the shares are intriguing at $191/share as excitement for the new Lightning Flash and Thunderbolt are continuing to help drive revenue growth. They are both computed assisted vacuum th ...