Buying here is suicidal. Just have a look at the fundamentals. Once the market slow down, this one will lose half it's actual value.
Company is suffering from dropping rate of "elective" PCI heart procedures. That goes against natural trends. Meanwhile, company is holding share, with some gains at the edges. I don't see a case for further drops.
There no way these valuations can be defended once the market slows down. VOLC has nowhere to go but down for a few quarters.