Filtering device for recording electrophysiological signals
US11129559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2017 |
| Grant date | Sep 28, 2021 |
| Priority date | — |
| Expiry date | May 22, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/1293
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A switchable filter device for use in a system for recording electro-physiological signals. The filter device includes a plurality of recording channels, the recording channels having an ablation recording channel. Each recording channel has a patient side terminal at a patient interface and a corresponding recording side terminal at a recording device interface. Each recording channel includes a first signal path with a first frequency dependent transmission characteristic having a first pass band, a second signal path with a second frequency dependent transmission characteristic different from the first frequency dependent transmission characteristic, the second frequency dependent transmission characteristic having a second pass band overlapping the first pass band, and switching devices operable to switch between the first signal path and the second signal path in response to a control signal indicative of a transient interference signal. Preferably, switching from the second signal path to the first signal path is performed with a switching delay after termination of the transient interference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.