Patent Number: 6,254,544

Title: Heart-function monitor apparatus

Abstract: An apparatus for monitoring a function of a heart of a person, including a pre-ejection period measuring device which non-invasively measures a pre-ejection period, an ejection-period measuring device which non-invasively measures an ejection period, an aorta-pressure estimating device for estimating a blood pressure in an aorta of the subject, a telediastolic-aorta-pressure determining device for determining, based on an aorta blood pressure estimated by the aorta-pressure estimating device, a telediastolic blood pressure in the aorta at a telediastolic time of the heart, a telesystolic-aorta-pressure determining device for determining, based on an aorta blood pressure estimated by the aorta-pressure estimating device, a telesystolic blood pressure in the aorta at a telesystolic time of the heart, and a cardiac-mechanical-efficiency determining device for determining, based on the measured pre-ejection period, the measured ejection period, the determined telediastolic aorta blood pressure, and the determined telesystolic aorta blood pressure, a cardiac mechanical efficiency of the person according a predetermined relationship between (A) cardiac mechanical efficiency and (B) (b1) pre-ejection period, (b2) ejection period, (b3) telediastolic aorta blood pressure, and (b4) telesystolic aorta blood pressure.

Inventors: Hayashi; Kazuko (Kyoto, JP)

Assignee: Colin Corporation

International Classification: A61B 5/026 (20060101); A61B 5/029 (20060101); A61B 5/0205 (20060101); A61B 5/022 (20060101); A61B 5/024 (20060101); A61B 5/0245 (20060101); A61B 005/02 ()

Expiration Date: 07/03/2018