Filtering patient signal also for ventilation artifacts
First Claim
1. An external device, comprising:
- a housing; and
a processor within the housing configured to;
receive a patient signal generated from a patient while the patient is receiving chest compressions at a frequency Fc from a mechanical chest compression device, and while the patient is also receiving ventilations at a frequency Fv from a ventilator, the frequency Fv having a value between 1/20th of the frequency Fc and ¼
of the frequency Fc, andcause to be applied at least one filter mechanism to the patient signal to substantially remove from the patient signal artifacts at the frequency Fc and at the frequency Fv, while substantially passing the patient signal at other frequencies between the frequency Fv and the frequency Fc.
1 Assignment
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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.
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Citations
22 Claims
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1. An external device, comprising:
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a housing; and a processor within the housing configured to; receive a patient signal generated from a patient while the patient is receiving chest compressions at a frequency Fc from a mechanical chest compression device, and while the patient is also receiving ventilations at a frequency Fv from a ventilator, the frequency Fv having a value between 1/20th of the frequency Fc and ¼
of the frequency Fc, andcause to be applied at least one filter mechanism to the patient signal to substantially remove from the patient signal artifacts at the frequency Fc and at the frequency Fv, while substantially passing the patient signal at other frequencies between the frequency Fv and the frequency Fc. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification