Electrosurgical device having a visible indicator
US5817091A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 20, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | May 20, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/126
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrosurgical system having a visual indicator is provided. In a first embodiment, the electrosurgical system includes an active electrode coupled to a power supply for providing electrosurgical energy from the power supply to a tissue area and a return electrode separated from the active electrode, the return electrode being adapted to receive a current flowing through the tissue. The electrosurgical system further includes a lamp in electrical communication with the active and return electrodes, wherein the neon bulb is illuminated when the current flowing through the tissue exceeds a predetermined threshold. In a further embodiment, the electrosurgical system includes a second lamp illuminated when a voltage through the tissue is greater than a predetermined threshold. In another embodiment, a monopolar electrosurgical device includes a visual indicator for indicating conditions at an area of affected tissue. The visual indicator circuit includes a transformer having a secondary winding, a wire through the transformer forming the primary winding, a series resistor coupled in series with the secondary winding, and a type NE-2 neon bulb coupled in series with the series resis…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.