Electrode needle with radiofrequency active filament
US6652519B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Nov 8, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/144
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Electrode needle for the treatment of parenchymatous tumours through radiofrequency-induced interstitial hyperthermy, comprising a hollow guide needle (11) and a radiofrequnecy active filament (12) threaded into the needle, connectable to a radiofrequency generator and capable of axial movements between an inactive position retracted into the needle and an active position of protrusion of a terminal segment of the filament from the distal end of the needle, characterised in that said terminal segment (13) of the filament is shaped to pass from a rectilinear shape when the filament is in retracted into the needle, to a spiral shape when the filament is in the active forward position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.