| 摘要 |
Methods and apparatus for electrosurgical treatment of hydrocephalus. A method of the invention comprises electrosurgical fenestration of the floor of the third ventricle using an electrosurgical probe or catheter. The probe or catheter may be introduced via an access hole in the patient's cranium. The access hole can be formed mechanically or electrosurgically. A stoma or window in the third ventricle can be enlarged electrosurgically and/or tissue surrounding the stoma can be coagulated, in order to maintain patency of the stoma. According to another aspect of the invention, a method of establishing patency in an occluded cerebral aqueduct comprises guiding an electrosurgical catheter into the cerebral aqueduct, positioning an active electrode in at least close proximity to the occlusion, and applying an ablative voltage to the active electrode to form a channel within the cerebral aqueduct.
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