Patent ID: 6695834
Filing Date: 2004-02-24
Classification: A61B

Abstract:
A device for treating a stone in a body of a patient, comprising:a sheath comprising a sheath wall, a distal end, a proximal end, and a lumen; an expandable basket slidably receivable by the lumen of the sheath, the basket for treating the stone, the basket having a collapsed position where the basket is enclosed within the sheath, and an expanded position where the basket extends from the distal end of the sheath, the basket comprising a distal tip, a proximal end, a lumen, and a projection, wherein the projection acts as a stress concentrator for facilitating breakage of the stone, the projection being pyramidal in shape and comprising a distal end, a proximal end, and at least three sides, the distal end of the projection being joined to the distal tip of the basket, and the proximal end of the projection being free within the lumen of the basket.