Patent ID: 8932319
Filing Date: 2015-01-13
Classification: A61B,A61F

Abstract:
1. A medical device retrieval system for securing an obstruction within a vessel lumen and for use with a catheter configured to be navigated through the vasculature, the device comprising: an elongated stent comprising a plurality of struts, the stent being collapsible for positioning in the catheter during delivery and having an expanded profile such that when expanded the struts are configured to engage the obstruction; a shaft fixedly attached to the elongated stent and having a flexibility to navigate through tortuous anatomy; a cover having a distal end coupled to a proximal end of the elongated stent, a cover wall defining a cavity and extending along the shaft, and a proximal end being moveable relative to the shaft, where the cover is collapsible for positioning in the catheter during delivery and self expands upon deployment from the catheter such that a portion of the cover expands outward against a vessel wall; and where the cover is axially pliable such that when the device is deployed in the vessel and frictional forces are applied against the cover, proximal movement of the shaft and elongated stent cause inversion of the fluid permeable cover wall such that the cover wall everts over the elongated stent, where the cover is self-collapsing when inverted.