Patent ID: 7682371
Filing Date: 2010-03-23
Classification: A61M

Abstract:
1. A distal protection device for collecting debris in a body lumen, comprising: a hollow tubular member having proximal and distal ends, the tubular member being of a thin-walled metallic material such that the distal protection device functions as a medical guidewire; a core wire having a flexible coil spring distal tip, the core wire being slidable within the tubular member; an occluder having an elastic casing, a proximal end fixedly attached to the distal end of the tubular member, a distal end axially secured about the core wire proximal of the flexible coil spring distal tip such that the flexible coil spring distal tip extends distally of the occluder, and a sealed internal volume containing a fixed amount of fluid, the occluder fluid being one of a liquid, a semisolid, a gel, and a combination thereof; and a seal through which the core wire is slidable, the seal being secured to the distal end of the tubular member and positioned to prevent leakage of the occluder fluid from the occluder, wherein the occluder is adapted to transform between a contracted configuration and an expanded deployed configuration wherein the occluder is in apposition with a wall of the body lumen by relative movement of the core wire and the tubular member.