Filtering patient signal also for ventilation artifacts
First Claim
1. A system for treating a patient, comprising:
- a mechanical chest compression device configured to deliver chest compressions to the patient at a frequency Fc;
a ventilator configured to deliver ventilations to the patient at a frequency Fv; and
an external device having a housing and a processor within the housing, the processor configured to;
receive a signal from the patient, andapply at least one filter mechanism to the patient signal to substantially remove from the patient signal artifacts at the frequency Fc, at a higher harmonic of the frequency Fc, and at a third frequency substantially equaling the frequency Fc minus the frequency Fv, while substantially passing other frequencies between the frequency Fc and the higher harmonic, and between the frequency Fc and the third frequency.
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Accused Products
Abstract
In embodiments, an external medical device is intended to care for a patient. If it receives an input that signifies that ventilation artifact is present in a signal of the patient, it transmits a corrective signal responsive to the received input. In further embodiments, a patient signal is received, which is generated from a patient while the patient is or was receiving chest compressions at a frequency Fc, and also receiving ventilations at frequency Fv. At least one filter mechanism may be applied to the patient signal to substantially remove artifacts at a) frequency Fc, b) a higher harmonic of frequency Fc, and c) a third frequency substantially equaling frequency Fc plus or minus frequency Fv, while substantially passing other frequencies between them. As a result, the patient signal can be cleaner, for diagnosing the patient'"'"'s state more accurately.
7 Citations
20 Claims
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1. A system for treating a patient, comprising:
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a mechanical chest compression device configured to deliver chest compressions to the patient at a frequency Fc; a ventilator configured to deliver ventilations to the patient at a frequency Fv; and an external device having a housing and a processor within the housing, the processor configured to; receive a signal from the patient, and apply at least one filter mechanism to the patient signal to substantially remove from the patient signal artifacts at the frequency Fc, at a higher harmonic of the frequency Fc, and at a third frequency substantially equaling the frequency Fc minus the frequency Fv, while substantially passing other frequencies between the frequency Fc and the higher harmonic, and between the frequency Fc and the third frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification