been sold to Stryker so both TPA and this first approved mechanical device are local Bay Area products so the person who developed this was actually a French neuroradiologist and you can imagine was thinking maybe a little bit about wine and how you get the cork out of a wine bottle it's kind of the same idea of how you get a blood clot out of a blood vessel so this catheter is a tube that you're going to put all the way up into the brain and you're going to try to get this corkscrew like device into the clot so