Mads Emil Matthiesen,Sigge Nejst Larsen,Victor Shadbolt,Harold Wodlinger
申请号：
US16341717
公开号：
US20200037914A1
申请日:
2017.10.13
申请国别(地区):
US
年份:
2020
代理人:
摘要：
The present invention relates to a switchable filter device for use in a system for recording electro-physiological signals. The filter device comprises a plurality of recording channels, the recording channels comprising 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 comprises 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.
