here's a blood clot in the brain you bring this wire up by putting it through a blood vessel in the leg all the way up into the brain and it turns into a corkscrew you try to screw it into the clot get a hold of the clot and then pull it out and this was the first device we now have more sophisticated devices that don't look like cork screws but basically do the same thing they go up into the brain they capture the clot and they bring it out those devices have approvals out to eight hours so it gives us more time but still many patients