RADIALLY EXPANDING URETERAL DEVICE

摘要

A ureteral device is provided for facilitating stone passage through a ureter or duct. An exemplary ureteral device includes a flexible, elongate body that defines a plurality of cages along the body. In a contracted state the cages have a reduced diameter. When an activation force is applied, the cages transform to an expanded state, thereby defining a plurality of void spaces. The void spaces are configured to receive an obstruction, such as a stone. The ureteral device can then be induced to the contracted state to compress the obstruction within the elongate, flexible body and then be removed from the obstructed passage. The ureteral device can be configured to have different numbers of elongate flexible members that define the cages.