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Blood pressure determining apparatus and method of determining excitation frequency used in the same



Blood pressure determining apparatus and method of determining excitation frequency used in the same



Official Gazette of the United States Patent and Trademark Office Patents 1256(2)



A blood pressure determining apparatus is provided which applies oscillations to the blood vessel of a subject through an exciter to determine the blood pressure based on the frequency of the oscillations propagated through the blood vessel measured by an oscillation sensor. The apparatus monitors an output of the oscillation sensor when the exciter applies no oscillation to the subject to determine the power spectrum of noise signals contained in the output and sets the frequency of oscillations to be applied to the blood vessel to any value within a band of the power spectrum in which the power of noise is small. This enables the blood pressure to be determined without influence of any electric disturbances from peripheral devices.

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Accession: 034497462

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