Radiofrequency ablation probe with directional cooling for lesion size control
US11395696B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 2018 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Sep 10, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2218/002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cooled radiofrequency ablation system including a probe assembly having a proximal region, a distal tip region, and a shaft is provided. First and second internal cooling fluid tubes extend from the proximal region and are positioned inside a cavity defined by the shaft. The distal tip region includes a conductive portion for delivering energy to a target location within tissue. The system also includes a radiofrequency generator for delivering energy to the target location and a cooling fluid reservoir and a bidirectional pump assembly for circulating a cooling fluid from the reservoir through the first internal cooling fluid tube then the second internal cooling fluid tube when the pump operates in a first direction or through the second internal cooling fluid tube then the first internal cooling fluid tube when the pump operates in a second direction to form lesions of different sizes at the target location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.