| 摘要 |
An embolic protection device ( 2000 ) comprises a collapsible filter body ( 102 ), a filter support ( 103 ) for supporting the filter body ( 102 ), and a tubular member ( 108 ) to which the filter support ( 103 ) is mounted. The filter support ( 103 ) comprises two round wires ( 116 ). Each wire ( 116 ) has a "M"-shaped curve ( 120 ) in the wire ( 116 ) which acts as a strain distributing linking element. In an extended configuration, the concave portion of each curve ( 120 ) faces longitudinally in the distal direction. In a collapsed configuration, the concave portion faces radially inwardly towards the tubular member ( 108 ) and wraps around part of the tubular member ( 108 ) to define a compact, low-profile filter support ( 103 ). Tethers ( 500, 501 ) extend between the curves ( 120 ) and a sleeve ( 201 ) slidably mounted to the tubular member ( 108 ). The distal end of each tether ( 500, 501 ) is fixedly attached to the sleeve ( 201 ) and to the filter body ( 102 ). The sleeve ( 201 ) is slidable over the tubular member ( 108 ) between a pair of stops.
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