Magnetically augmented radio frequency ablation
US7744596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2005 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Jan 10, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B18/1477
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tissue ablation assembly comprises an elongate probe device, at least one ablation electrode element carried by the probe device for conveying ablation energy, and at least one magnetic element for substantially altering the path of the ablation energy conveyed by the electrode element(s). In one embodiment, the magnetic element substantially urges the ablation energy radially outward. In another embodiment, magnetic element takes the form of a ring magnet that exhibits at least four alternating magnetic poles circumferentially disposed around the probe device axis. A method of treating tissue (e.g., a tumor) is also provided. The method comprises introducing a probe device into the patient, conveying ablation energy from the probe device, and applying a magnetic field adjacent the probe device to substantially alter the path of the ablation energy, e.g., by urging the ablation energy conveyed from the probe device radially outward into the tissue to create a tissue lesion, or by urging the ablation energy longitudinally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.