A pair of vascular interventional devices, at least one of which includes a hollow, flexible tube and a dilator that is adapted for insertion into and through the tube and over a guidewire, may be utilized to treat or study a cardiovascular condition, or to measure the blood pressure across a vascular...http://www.google.de/patents/US6514236?utm_source=gb-gplus-sharePatent US6514236 - Method for treating a cardiovascular condition