发明授权
- 专利标题： GAIN CONTROL FOR A PERIODIC SIGNAL
- 专利标题（中）： 增益控制的周期信号
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申请号： EP97930223.9申请日： 1997-06-25
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公开(公告)号： EP0914179B1公开(公告)日： 2004-09-22
- 发明人: NEISZ, Johann, J. , CHRISTOPHERSON, Mark, A.
- 申请人： Medtronic, Inc.
- 申请人地址： 710 Medtronic Parkway Minneapolis, Minnesota 55432-5604 US
- 专利权人： Medtronic, Inc.
- 当前专利权人： Medtronic, Inc.
- 当前专利权人地址： 710 Medtronic Parkway Minneapolis, Minnesota 55432-5604 US
- 代理机构： Hughes, Andrea Michelle
- 优先权： US673718 19960626
- 国际公布： WO1997049451 19971231
- 主分类号： A61N1/36
- IPC分类号： A61N1/36 ; A61N1/37
摘要：
A gain control method for providing a gain controlled signal representative of a periodic physiological parameter of a patient includes providing a signal characteristic of the periodic physiological parameter. The periodic physiological parameter includes a plurality of periodic cycles. Gain of the signal is updated only once per periodic cycle following detection of a periodic event. The updating is performed by monitoring an amplitude of the signal between detection of periodic events and comparing the amplitude to a gain control amplitude threshold. Gain of the signal is updated as a function of the comparison. Further, gain is updated following expiration of a predetermined period of time if a periodic event is not detected within the predetermined period of time. The physiological parameter may be respiratory effort. An apparatus for providing such gain control is also provided.
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