Reduction of endoscope high frequency leakage current using a common-mode choke
US11206966B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2017 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | Dec 8, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2017/0093
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An endoscope includes a body and a circuit board mounted within the body. A cable couples the circuit board to an imaging system. A common-mode choke is mounted within the body and is configured to electrically isolate the cable from the body at cautery frequencies. A method includes twisting a plurality of wires together to form a twisted set of wires. The twisted set of wires is wound around a core so that windings do not overlap, and so that a first winding and a last winding are separated from each other. Wires in the twisted set of wires are coupled to a plurality of wires in the cable. Also, these wires in the twisted set of wires are also coupled to the circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.