Apparatus for measuring biological signal

• US 5,653,237 A
• Filed: 03/29/1996
• Issued: 08/05/1997
• Est. Priority Date: 03/31/1995
• Status: Expired due to Fees

• Current Assignee: Nihon Kohden Corporation
• Original Assignee: Nihon Kohden Corporation
• Inventors: Uchida, Keisuke
• Primary Examiner(s): MANUEL, GEORGE C
• Application Number:
  US08/624,093
• Time in Patent Office: 494 Days
• Field of Search: 128/660.01, 128/660.02, 128/660.03, 128/661.04, 128/696, 128/700, 128/716, 128/653.1, 128/653.2, 128/695 R, 128/661.08, 128/661.09 , 128/661.1
• US Class Current: 600/456
• CPC Class Codes: A61B 5/352 Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval
• CPC Class Codes: A61B 8/08 Detecting organic movements or changes, e.g. tumours, cysts, swellings A61B8/02 - A61B8/06 take precedence

Abstract

An apparatus for measuring biological signals includes: a whole function input unit for detecting a parameter representing a whole function of an organ of a body to be measured; a regional function input unit for detecting a parameter representing a regional function of the organ of the body; a conversion operation unit for outputting a conversion value while converting the parameter from the regional function input unit into a value representing the whole function; a comparison operation unit for receiving the parameter representing the whole function outputted from the whole function input unit and the conversion value outputted from the conversion operation unit and calculating and outputting a ratio between the parameter representing the whole function and the conversion value or a difference between the parameter representing the whole function and the conversion value; a display control unit for receiving the parameter representing the whole function and the conversion value or the ratio between the parameter representing the whole function and the conversion value and outputting the received data as X-Y graph data; and a monitor for displaying the parameter representing the whole function and the conversion value or the ratio between the parameter representing the whole function and the conversion value on X-Y graph.

Claims

1. An apparatus for measuring biological signals, comprising:

first input means for detecting a parameter representing a whole function of an organ of a body to be measured;

second input means for detecting a parameter representing a regional function of the organ of the body;

a conversion operation unit for converting said parameter output from said second input means into a conversion value representing the whole function and for outputting said conversion value; and

a comparison operation unit for receiving said parameter representing the whole function output from said first input means and said conversion value output from said conversion operation unit and for calculating and outputting one of a ratio between said parameter and said conversion value, and a difference between said parameter and said conversion value.

2. An apparatus for measuring biological signals, comprising:

first input means for detecting a parameter representing a whole function of an organ of a body to be measured;

second input means for detecting a parameter representing a regional function of the organ of the body;

conversion operation unit for converting said parameter output from said second input means into a conversion value representing the whole function and for outputting said conversion value;

display control means for receiving said parameter representing said whole function and said conversion value and for outputting said parameter and said conversion value as X-Y graph data; and

display means for displaying said graph data output from said display control means.

3. An apparatus for measuring biological signals, comprising:

a first ultrasound probe for transmitting and receiving an ultrasound signal for measuring a short-axis inner diameter of a heart;

a second ultrasound probe for transmitting and receiving an ultrasound signal for measuring a blood flow velocity of blood ejecting from the heart;

ECG signal detection means for detecting an ECG signal to be used as a trigger signal for a single heart beat;

control means, including first calculation means, second calculation means, and control operation means, said first calculation means receiving said ultrasound signal for measurement of said short-axis inner diameter detected by said first ultrasound probe, said ultrasound signal for measurement of said blood flow velocity detected by said second ultrasound probe, and said ECG signal, and calculating a first stroke volume based on said ultrasound signal for measurement of said short-axis inner diameter, said second calculation means calculating a second stroke volume, at the same time that said first stroke volume is being calculated, from said ultrasound signal for measurement of said blood flow velocity, said comparison operation means calculating and outputting a ratio between said first stroke volume and said second stroke volume; and

display means for displaying said first stroke volume and said second stroke volume output from said control means on an X-Y graph.