CARDIAC OUTPUT MONITOR DEVICE AND CARDIAC OUTPUT MEASUREMENT METHOD

Title:

CARDIAC OUTPUT MONITOR DEVICE AND CARDIAC OUTPUT MEASUREMENT METHOD

Document Type and Number:

Japanese Patent JP2013252423

Kind Code:

A

Abstract:

To provide new technology for continuously measuring a cardiac output with low invasion.

A processor 100 of a cardiac output monitor device 5 has: an arterial diameter measurement ultrasonic probe 12 attached and fixed to the neck of a subject 3, and measuring the diameter of the carotid artery; and an arterial diameter measurement control part 114. The arterial diameter measurement control part 114 analyzes an ultrasonic echo to calculate the diameter of the artery (DOA), and outputs it to an ejection time/mean arterial pressure calculation part 122. The ejection time/mean arterial pressure calculation part 122 calculates a heart ejection time (ET) from a temporal change of the diameter of the artery (DOA), and calculates a cardiac output. A temporal change waveform of the diameter of the artery (DOA) is clearer than a blood flow velocity measurement waveform in the main artery or the ventricular outflow tract by an ultrasonic Doppler method, and allows automatic high-accuracy calculation of the heart ejection time (ET).

Inventors:

AOKI MIKIO
KAMIMURA KAZUNORI
SUGIMACHI MASARU

Application Number:

JP2013092007A

Publication Date:

December 19, 2013

Filing Date:

April 25, 2013

Export Citation:

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Assignee:

SEIKO EPSON CORP
NAT CEREBRAL & CARDIOVASCULAR CT

International Classes:

A61B8/06; A61B5/022; A61B5/0285

Attorney, Agent or Firm:

Yasushi Kuroda
Takekoshi Noboru
Inoue Ichi

Previous Patent: JP2013252422

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