Patent ID: 7722677

Claim:
A ureteral stent, comprising: an elongate member having a proximal end portion and a distal end portion and defining a longitudinal axis; a first extension member extending from the proximal end portion of the elongate member, the first extension member including a first portion, a second portion, and a third portion including an end portion and having an unconstrained configuration in which the first portion is arcuate and extends in a direction away from the longitudinal axis of the elongate member, the second portion extends from the first portion in a distal direction, and the third portion extends from the second portion in a direction away from the longitudinal axis of the elongate member such that the end portion is disposed at a lateral distance from the elongate member measured in a direction substantially perpendicular to the longitudinal axis of the elongate member that is greater than a lateral distance from the elongate member of the first portion measured in a direction substantially perpendicular to the longitudinal axis of the elongate member and a lateral distance from the elongate member of the second portion measured in a direction substantially perpendicular to the longitudinal axis of the elongate member; and a second extension member extending from the proximal end portion of the elongate member, the second extension member including a first portion, a second portion, and a third portion including an end portion and having an unconstrained configuration in which the first portion is arcuate and extends in a direction away from the longitudinal axis of the elongate member, the second portion extends from the first portion in a distal direction, and the third portion extends from the second portion in a direction away from the longitudinal axis of the elongate member such that the end portion is disposed at a lateral distance from the elongate member measured in a direction substantially perpendicular to the longitudinal axis of the elongate member that is greater than a lateral distance from the elongate member of the first portion measured in a direction substantially perpendicular to the longitudinal axis of the elongate member and a lateral distance from the elongate member of the second portion measured in a direction substantially perpendicular to the longitudinal axis of the elongate member, when in the unconstrained configurations, the first extension member and the second extension member collectively configured to retain the elongate member within a urinary track of a patient.