CARDIAC REGULATING APPARATUS AND REGULATING METHOD THEREOF

• US 20160325102A1
• Filed: 06/26/2015
• Published: 11/10/2016
• Est. Priority Date: 05/04/2015
• Status: Abandoned Application

• Current Assignee: National Chiao Tung University (Government of The Republic of China)
• Original Assignee: National Chiao Tung University (Government of The Republic of China)
• Inventors: CHANG, Chia-Chi, HSIAO, Tzu-Chien, HSU, Hung-Yi
• Application Number:
  US14/751,156
• Publication Number:
  US 20160325102A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/02028 Determining haemodynamic parameters not otherwise provided for, e.g. cardiac contractility or left ventricular ejection fraction
• CPC Class Codes: A61B 5/02116 of pulse wave amplitude A61B5/02225 takes precedence
• CPC Class Codes: A61B 5/0215 by means inserted into the body catheters A61M25/00
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• CPC Class Codes: A61B 5/686 Permanently implanted devices, e.g. pacemakers, other stimulators, biochips A61B5/6861 takes precedence
• CPC Class Codes: A61N 1/36564 controlled by blood pressure
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371

Abstract

A cardiac regulating apparatus and a cardiac regulating method are disclosed. The cardiac regulating apparatus includes a control unit, a sensing unit and an analyzing unit. The control unit is configured for outputting a cardiac control signal in accordance with a heart rate of a heart. The sensing unit is configured for acquiring a blood pulse signal. In response to the cardiac control signal having a first constant cardiac rhythm, the analyzing unit is configured for analyzing amplitude and reflected wave time of the blood pulse signal, and for outputting a regulation parameter according to the amplitude and the reflected wave time of the blood pulse signal. The control unit is configured for regulating the cardiac control signal according to the regulation parameter from the first constant cardiac rhythm to a second constant cardiac rhythm different from the first constant cardiac rhythm.

Claims

1. A cardiac regulating apparatus, comprising:

a control unit, configured for outputting a cardiac control signal in accordance with a heart rate of a heart;

a sensing unit, configured for acquiring a blood pulse signal; and

an analyzing unit, in response to the cardiac control signal having a first constant cardiac rhythm, the analyzing unit being configured for analyzing amplitude and reflected wave time of the blood pulse signal, and outputting a regulation parameter according to the amplitude and the reflected wave time of the blood pulse signal, wherein the control unit is configured for regulating the cardiac control signal according to the regulation parameter from the first constant cardiac rhythm to a second constant cardiac rhythm different from the first constant cardiac rhythm.

2. The cardiac regulating apparatus of claim 1, wherein the regulation parameter has a time-varying spectrum value, and the control unit is configured for regulating the cardiac control signal according to the regulation parameter and the spectrum value from the first constant cardiac rhythm to the second constant cardiac rhythm.

3. The cardiac regulating apparatus of claim 1, wherein, in response to the amplitude or the reflected wave time of the blood pulse signal being decreased, the analyzing unit increases the regulation parameter.

4. The cardiac regulating apparatus of claim 1, wherein, in response to the amplitude or the reflected wave time of the blood pulse signal being increased, the analyzing unit decreases the regulation parameter.

5. The cardiac regulating apparatus of claim 2, wherein, in response to the spectrum value being higher than a predetermined value, the control unit decreases variations of the cardiac control signal.

6. A cardiac regulating method, comprising:

outputting a cardiac control signal in accordance with a heart rate of a heart;

acquiring a blood pulse signal;

analyzing amplitude and reflected wave time of the blood pulse signal in response to the cardiac control signal having a first constant cardiac rhythm;

outputting a regulation parameter according to the amplitude and the reflected wave time of the blood pulse signal; and

regulating the cardiac control signal according to the regulation parameter from the first constant cardiac rhythm to a second constant cardiac rhythm different from the first constant cardiac rhythm.

7. The cardiac regulating method of claim 6, wherein the regulation parameter has a time-varying spectrum value, and the cardiac regulating method further comprises regulating the cardiac control signal according to the regulation parameter and the spectrum value from the first constant cardiac rhythm to the second constant cardiac rhythm.

8. The cardiac regulating method of claim 6, wherein, in response to the amplitude or the reflected wave time of the blood pulse signal being decreased, the cardiac regulating method further comprises increasing the regulation parameter.

9. The cardiac regulating method of claim 6, wherein,

in response to the amplitude or the reflected wave time of the blood pulse signal being increased, the cardiac regulating method further comprises decreasing the regulation parameter.

10. The cardiac regulating method of claim 7, wherein,

in response to the spectrum value being higher than a predetermined value, the cardiac regulating method further comprises decreasing variations of the cardiac control signal.