CALCULUS RETRIEVING/REMOVING DEVICE AND METHOD

摘要

A method of retrieving calculus in a renal pelvis of a living body involves positioning an enclosure in the renal pelvis, creating convection in the renal pelvis by introducing liquid into the renal pelvis from outside the living body to lift the calculus from a surface of the renal pelvis, retrieving the calculus in the renal pelvis by creating a vacuum in the enclosure while the enclosure is located in the renal pelvis so that the calculus are drawn into the enclosure, wherein the vacuum also draws the liquid into the enclosure, and withdrawing the enclosure from the renal pelvis while the calculus is in the enclosure.

主权项

1. A method of retrieving calculus in a renal pelvis comprising:
moving an elongated member toward the renal pelvis, the elongated member including an outlet, an inlet and a retrieval part at a distal side of the elongated catheter; positioning the outlet and the inlet of the elongated member in the renal pelvis; producing fluid flow in the renal pelvis by suctioning fluid from the inlet and exhausting the fluid out of the outlet; retrieving the calculus located in the renal pelvis by way of the retrieval part; and withdrawing the elongated member from the renal pelvis after retrieving the calculus by way of the retrieval part.