TORRANCE, CASEY,WALSH, KATE,SALSTROM, JAROD,YOUMANS, SCOTT,AUTH, DAVID,WULFMAN, EDWARD, I.
申请号：
HK10102059.2
公开号：
HK1135302B
申请日:
2010.02.26
申请国别(地区):
HK
年份:
2014
代理人:
摘要：
For removal of obstructive material from a body lumen or cavity an interventional catheter assembly comprises an operating head operably connected to a rotatable, translatable drive shaft which is driven by a drive motor and is received through an elongated catheter (32). The operating head comprises a plurality of differential blades (93) and at least one of the blades has a stepped blade cutter configuration having a leading edge cutting surface (99) adjacent or in proximity to a shoulder region (97) which is adjacent to a leading surface (91) of the blade (93). The shoulder region (97) is positioned between the leading edge cutting surface (99) and the leading surface (91), and the shoulder region has a width that is greater than a height of the leading edge cutting surface. Risk of damage to tissue being acted upon is thereby reduced.
