Devices and methods for accessing and closing vascular sites are disclosed. Self-sealing closure devices and methods are disclosed. A device that can make both steeply sloping and flat access paths into a vascular lumen is disclosed. The device can also form arteriotomies with sections cleaved between...http://www.google.com/patents/US8002794?utm_source=gb-gplus-sharePatent US8002794 - Access and closure device and method
