Patent ID: 7875044

Claim:
A method of occluding at least a portion of a defect in a wall of a body vessel, comprising: providing a microcatheter capable of deploying an embolic material; providing a delivery catheter housing an occlusion device in a collapsed orientation, wherein the occlusion device comprises a thin film mesh including: a proximal end portion associated with a body portion, a plurality of slot members associated with said body portion, and a plurality of slit members associated with said proximal end portion, wherein said slot members are in a generally open condition and said slit members are in a generally closed condition when the occlusion device is in said collapsed orientation; positioning at least an outlet portion of said microcatheter at the defect; ejecting at least a portion of the occlusion device from a downstream end of the delivery catheter; positioning the occlusion device adjacent to the defect; providing for radial expansion of the occlusion device to a deployed orientation within the body vessel at which said slot members are in a generally closed condition and said slit members are in a generally open condition and such that a body portion of the occlusion device at least partially covers the defect and engages at least a portion of the microcatheter; and ejecting said embolic material into the defect from said outlet portion of the microcatheter.