Self-limiting electrosurgical return electrode
US6666859B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2002 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Sep 9, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/908
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A self-limiting electrosurgical return electrode for use with electrosurgery. Through selection of impedance characteristics for the materials of the principal body of the electrode, and through tailoring of electrode geometries, the electrode is self-regulating and self-limiting as to current density and temperature rise to prevent patient trauma. The return electrode includes a sheet of material having an effective bulk impedance equal to or greater than about 4,000&OHgr;.cm and one or more connectors for making electrical connection to the sheet. The effective bulk impedance of the sheet may arise from resistive components, capacitive components, inductive components, or combinations thereof. Configuration of the return electrode allows the electrode to self-limit the electrode's current densities, thereby preventing burning of a patient during surgery. Through employment of washable surface areas, the electrode is made readily cleanable, disinfectable, sterilizable, and reusable. An optional sleeve is provided for cooperative use with the electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.