| 主权项 |
1. A device for closure of an opening formed in a body vessel, comprising:
a grasping member comprising an integral tubular member having a proximal portion and a distal portion, said proximal portion comprising a generally tubular body and said distal portion comprising a plurality of grasping fingers extending from a distal end of said generally tubular body, said fingers being defined by slits through said tubular member, wherein said fingers extend integrally from said tubular body, said fingers having a generally rectangular cross-section defined by a thickness and a width where said width is larger than said thickness, said width being defined by said slits and said thickness being defined by inner and outer surfaces of said tubular member, said fingers radially extending from said tubular body distal end at a first angle, and collapsible therefrom to a second angle, said fingers having a distal tip configured for non-piercingly grasping an outer wall of said body vessel surrounding said opening when said fingers are extended at said first angle, said distal tip including two generally flattened portions at a leading end thereof and a groove disposed between the generally flattened portions, said generally flattened portions each comprising a distally facing end surface defined by at least a portion of said rectangular cross-section; and a sheath having a lumen extending therethrough, said lumen sized for receiving at least a portion of said grasping member therein, said sheath slidable over said generally tubular body and at least a portion of said grasping fingers for collapsing said fingers from said first angle to said second angle, thereby causing said collapsed fingers to at least substantially close said opening. |
