| 摘要 |
An apparatus is provided that includes an elongate member having a distal end portion, a proximal end portion, and a medial portion that is disposed between the distal end portion and the proximal end portion. The medial portion is configured to be disposed in a ureter of a patient. The apparatus further includes an expandable member that is coupled to the elongate member. The expandable member has an expanded configuration and a collapsed configuration. The expandable member is further configured to be inserted into the ureter of the patient and configured to contact the ureter to help retain the elongate member in place within the patient.
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