CARDIAC OUTPUT MEASURING UNIT

• US 20140121551A1
• Filed: 10/03/2013
• Published: 05/01/2014
• Est. Priority Date: 10/30/2012
• Status: Abandoned Application

• Current Assignee: Nihon Kohden Corporation
• Original Assignee: Nihon Kohden Corporation
• Inventors: Ogino, Hirokazu
• Application Number:
  US14/044,958
• Publication Number:
  US 20140121551A1
• Time in Patent Office: Days
• US Class Current: 600/513
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/02108 from analysis of pulse wave characteristics
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/029 Measuring or recording blood output from the heart, e.g. minute volume A61B8/065 takes precedence
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/316 Modalities, i.e. specific diagnostic methods
• CPC Class Codes: A61B 5/339 Displays specially adapted therefor
• CPC Class Codes: A61B 5/352 Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval

Abstract

A cardiac output measuring unit includes: a biological signal receiving section which is configured to receive a plurality of biological signals; a calibration information storing section which is configured to store calibration information; a calculation section which is configured to calculate a cardiac output based on the plurality of biological signals and the calibration information; and a communication section which is capable of transmitting the cardiac output to an external device.

Claims

1. A cardiac output measuring unit comprising:

a biological signal receiving section which is configured to receive a plurality of biological signals;

a calibration information storing section which is configured to store calibration information;

a calculation section which is configured to calculate a cardiac output based on the plurality of biological signals and the calibration information; and

a communication section which is capable of transmitting the cardiac output to an external device.

2. The cardiac output measuring unit according to claim 1, wherein

the communication section is capable of receiving the calibration information from the external device, and

the calibration information storing section stores the received calibration information.

3. The cardiac output measuring unit according to claim 1, further comprising:

an input section which enables a user to input the calibration information, wherein

the calibration information storing section stores the input calibration information.

4. The cardiac output measuring unit according to claim 1, wherein

the biological signal receiving section receives the plurality of biological signals transmitted from the external device.

5. The cardiac output measuring unit according to claim 1, further comprising:

a biological signal measuring section which is configured to measure the plurality of biological signals and transmit the plurality of biological signals to the biological signal receiving section.

6. The cardiac output measuring unit according to claim 5, wherein

the biological signal measuring section includes:

at least two electrodes to measure an R-wave of an electrocardiographic waveform; and

a photoelectric pulse wave detection sensor, and

the calculation section calculates the cardiac output by using a pulse wave propagation time.

7. The cardiac output measuring unit according to claim 6, wherein

the at least two electrodes and the photoelectric pulse wave detection sensor are integrally formed.

8. The cardiac output measuring unit according to claim 1, wherein

the calibration information includes one of a patient'"'"'s height, weight, body-surface area, gender, blood pressure value at a predetermined time, pulse pressure at a predetermined time, pulse wave propagation time at a predetermined time, and pulse wave at a predetermined time.

9. The cardiac output measuring unit according to claim 1, further comprising:

a display section which is capable of displaying one or more of the cardiac output, the calibration information, and the biological signal.