Device and method for detecting faults in a shielded instrument
US11998259B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 2, 2022 |
| Grant date | Jun 4, 2024 |
| Priority date | — |
| Expiry date | Jun 21, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1226
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device and method for detecting faults in a shield of an electrosurgical instrument is described. The device has a relay configured to selectively interrupt power to the electrosurgical instrument, monitoring circuitry configured to monitor a shield in the electrosurgical instrument, control circuitry to control the relay, and a battery power source. The monitoring circuitry has an envelope detector and a detected average shield current detector. The monitoring circuitry is configured to compare a shield current peak value to a shield current peak threshold value, and to compare a detected average shield current value to a detected average shield current threshold value. The device is further configured to operatively couple an active electrode of an electrosurgical instrument and a return electrode to an electrosurgical generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.