Method and apparatus for identifying heartbeat
First Claim
1. A method for identifying a heartbeat comprising the steps of:
- measuring an arterial pressure signal in the form of multichannel measurement; and
performing signal detection and decision-making concerning the identification of a signal as a heartbeat signal;
wherein said signal detection includes multichannel channel-specific detection for the purpose of identifying signal components of different channels, and said obtained channel-specific detected channel signals are used as input data in said decision-making, and wherein said heartbeat signal is detected from a signal of each channel by detecting positive and negative peaks of said signal of each channel within a time window.
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Abstract
The invention relates to a method and an apparatus for identifying a heartbeat. In the method, an arterial pressure signal is measured in the form of multichannel measurement, and the required signal-processing operations, such as filtration, are carried out if necessary. The method also comprises carrying out signal detection and decision-making concerning the acceptance as a heartbeat signal. According to the invention, the signal detection includes multichannel channel-specific detection for the purpose of identifying signal components of different channels, and the obtained channel-specific detected channel signals are used as input data during the decision-making stage.
25 Citations
18 Claims
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1. A method for identifying a heartbeat comprising the steps of:
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measuring an arterial pressure signal in the form of multichannel measurement; and
performing signal detection and decision-making concerning the identification of a signal as a heartbeat signal;
wherein said signal detection includes multichannel channel-specific detection for the purpose of identifying signal components of different channels, and said obtained channel-specific detected channel signals are used as input data in said decision-making, and wherein said heartbeat signal is detected from a signal of each channel by detecting positive and negative peaks of said signal of each channel within a time window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for identifying a heartbeat comprising the steps of:
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measuring an arterial pressure signal in the form of multichannel measurement; and
performing signal detection and decision-making concerning the identification of a signal as a heartbeat signal;
wherein said signal detection includes multichannel channel-specific detection for the purpose of identifying signal components of different channels, said obtained channel-specific detected channel signals are used as input data in said decision-making, and a decision is made in said decision-making step on the basis of cross-correlation of signals occurring in two or more adjacent channels.
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16. A method for identifying a heartbeat comprising the steps of:
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measuring an arterial pressure signal in the form of multichannel measurement; and
performing signal detection and decision-making concerning the identification of a signal as a heartbeat signal;
wherein said signal detection includes multichannel channel-specific detection for the purpose of identifying signal components of different channels, said obtained channel-specific detected channel signals are used as input data in said decision-making, and a decision is made in said decision-making step on the basis of common-mode signals occurring simultaneously in two or more adjacent channels.
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17. A method for identifying a heartbeat comprising the steps of:
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measuring an arterial pressure signal in the form of multichannel measurement; and
performing signal detection and decision-making concerning the identification of a signal as a heartbeat signal;
wherein said signal detection includes multichannel channel-specific detection for the purpose of identifying signal components of different channels, said obtained channel-specific detected channel signals are used as input data in said decision-making, and a decision is made in said decision-making step on the basis of a signal occurring regularly in one channel when said heartbeat signal cannot be identified on the basis of monitoring two or more adjacent channels.
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18. A method for identifying a heartbeat comprising the steps of:
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measuring an arterial pressure signal in the form of multichannel measurement; and
performing signal detection and decision-making concerning the identification of a signal as a heartbeat signal;
wherein said signal detection includes multichannel channel-specific detection for the purpose of identifying signal components of different channels, said multichannel channel-specific detection including identifying a heartbeat pulse component of said arterial pressure signal as part of said signal components of said different channels, and said obtained channel-specific detected channel signals are used as input data in said decision-making.
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Specification