| 摘要 |
Device and methods (10, 66, 94, 112) for removing a foreign object from a body lumen are disclosed. A retrieval device in accordance with an exemplary embodiment of the present invention may include an elongated member including a flexible collector element, and a core wire (42, 74, 102, 152) that can be engaged by the physician to actuate the collector element between a first position and a second position with the body. The collector element may comprise a coiled section including a coiled flat ribbon adapted to assume a substantially straight shape in the first position and an expanded shape forming one or more helically oriented loops (36, 38, 40, 80, 82, 84, 108, 110, 112, 114) in the second position. In other embodiments, the collector element may comprise a filter basket (126) including a plurality of filter struts adapted to expand in the second position. |
