Cardiac output computer

• US 3,304,413 A
• Filed: 03/26/1963
• Issued: 02/14/1967
• Est. Priority Date: 03/26/1963
• Status: Expired due to Term

• Current Assignee: Arye Ron, William B. Lehmann
• Original Assignee: Arye Ron, William B. Lehmann
• Inventors: Lehmann, William B., ARYE RON
• Application Number:
  US04/268,105
• Time in Patent Office: 1,421 Days
• US Class Current: 377/19
• CPC Class Codes: A61B 5/0275 using tracers, e.g. dye dilution
• CPC Class Codes: A61B 5/029 Measuring or recording blood output from the heart, e.g. minute volume A61B8/065 takes precedence

Claims

1. APPARATUS FOR INTEGRATING A FUNCTION, SAID APPARATUS COMPRISING:

FIRST CIRCUIT MEANS FORMING PULSES HAVING A REPETITION RATE RELATED BY A FIRST FACTOR TO THE VALUE OF SAID FUNCTION;

A COUNTER;

MEANS FOR APPLYING SAID PULSES TO SAID COUNTER;

MEANS PRODUCING FIRST AND SECOND SIGNALS RELATED TO THE PEAK VALVE OF SAID FUNCTION;

SECOND CIRCUIT MEANS TO FORM PULSES RELATED BY A SECOND FACTOR OF THE VALUE OF SAID FUNCTION IN RESPONSE TO A PREDETERMINED RELATIONSHIP BETWEEN THE VALUE OF SAID FUNCTION AND SAID FIRST SIGNAL;

MEANS FOR APPLYING SAID LAST-MENTIONED PULSES TO SAID COUNTER;

AND MEANS TO PREVENT THE APPLICATION OF PULSES TO SAID COUNTER IN RESPONSE TO A PREDETERMINED RELATIONSHIP BETWEEN THE VALUE OF SAID FUNCTION AND SAID SECOND SIGNAL.