| 摘要 |
A method and apparatus for treating urinary tract stones in the urinary tract uses an adjustable stone retainer to engage and retain a urinary tract stone and a central electrode to apply disintegrating energy to the retained urinary tract stone. A physician inserts a collapsed retainer assembly, including the adjustable stone retainer and the central electrode enclosed in an outer sheath, into the urinary tract. Once the probe is proximate the urinary tract stone, the physician extends the stone retainer relative to the outer sheath and engages and retains the urinary tract stone in the stone retainer. While retaining the urinary tract stone in the stone retainer, the physician applies disintegrating energy with the central electrode to the urinary tract stone until the urinary tract stone disintegrates. Once the treatment is complete, the physician retracts the stone retainer into the outer sheath and removes the collapsed retainer assembly from the urinary tract. |
