WULFMAN, EDWARD,TORRANCE, CASEY,NISTAL, BRENT,YOUMANS, SCOTT,HEFNER, MATT
申请号：
CA2518497
公开号：
CA2518497C
申请日:
2004.03.10
申请国别(地区):
CA
年份:
2012
代理人:
摘要：
An interventional catheter incorporates an advanceable, rotatable operatinghead or cutter assembly (50, 72, 80, 120, 140) having one or more distallylocated differential cutting surfaces (52, 74, 82, 124, 145, 154, 164) havinga cant angle of less than 90~, the cant angle being an angle of intersectionof the cutting surface and a line tangent to the circumference of the cutterassembly. A fixed blade cutter assembly (50, 72, 80, 120, 140) has a pluralityof differential cutting surfaces (52, 74, 82, 124, 145, 147, 154, 164) withlarge ports (68, 125, 143) provided between neighboring differential cuttingblades providing access to a sealed lumen and aspiration system. A dual cutterassembly having a fixed blade cutter assembly (200) and an adjustable bladecutter assembly (210) is also provided. A drive shaft provides rotation andtorque from a drive system to the cutter assembly and may be coupled to thecutter assembly by means of an articulating bearing assembly (250).
