Patent ID: 8382788
Filing Date: 2013-02-26
Classification: A61B,A61F

Abstract:
1. A filter device for filtration within the vasculature comprising a) an elongated delivery structure having a proximal end and a distal end, the elongated delivery structure comprising a tubular element and a guide structure, the tubular element having a proximal end, a distal end, and a lumen extending from the proximal end to the distal end, the guide structure slidably extends through the lumen of the tubular element, and the guide structure has a proximal end and a distal end that extends beyond the distal end of the tubular element; b) a first filter element comprising a first filter basket and having an opening into the first filter basket wherein the first filter element is attached at or near the distal end of the tubular element with the opening of the first filter basket oriented toward the distal end of the elongated delivery structure; and c) a second filter element comprising a second filter basket having an opening into the second filter basket and a proximal strut connecting the second filter basket to the guide structure at a position proximal to the opening of the second filter basket with the opening of the second filter basket oriented toward the proximal end of the elongated delivery structure, wherein the second filter basket and its strut can be extended beyond the distal end of the tubular element.