Patent ID: 6187017
Filing Date: 2001-02-13
Classification: A61B

Abstract:
A retrieval basket adapted to capture calculi as it is moved along an axis of said retrieval basket in a proximal direction, said retrieval basket comprising:a plurality of wires extending from a proximal end of said retrieval basket to a distal end of said retrieval basket wherein said wires converge toward one another at said proximal and distal ends, at least two of the wires forming a pair, each wire in the pair having relative to one another a first maximum in a proximal portion of the basket and a second maximum in a distal portion of the basket, the wires in the pair having at least two crossing points between the proximal and distal ends of the basket;said wires in a proximal portion of said retrieval basket having a radius of curvature, and said wires in a distal portion of said retrieval basket having a radius of curvature, and wherein the radius of curvature of said wires in the proximal portion is smaller than that of said wires in the distal portion.