BIOLOGICAL SIGNAL PROCESSING APPARATUS AND MEDICAL APPARATUS CONTROLLING METHOD

• US 20110060714A1
• Filed: 09/09/2010
• Published: 03/10/2011
• Est. Priority Date: 09/09/2009
• Status: Active Grant

• Current Assignee: Nihon Kohden Corporation
• Original Assignee: Nihon Kohden Corporation
• Inventors: UKAWA, Teiji
• Granted Patent: US 9,566,008 B2
• Time in Patent Office: Days
• US Class Current: 706/52
• CPC Class Codes: A61B 5/021 Measuring pressure in heart or blood vessels A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/02125 of pulse wave propagation time
• CPC Class Codes: A61B 5/318 Heart-related electrical modalities, e.g. electrocardiography [ECG]
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• CPC Class Codes: G06N 7/01 Probabilistic graphical models, e.g. probabilistic networks
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment

Abstract

A biological signal processing apparatus includes: a provider which provides state probability which corresponds to a value of a first biological signal; an acquirer which acquires a first biological signal in time series from a living body and which acquires state probability in time series which corresponds to a value of the acquired first biological signal from the provider; and a determiner which acquires determination probability based on the state probability acquired by the acquirer and which performs determination whether a process is performed or not by using the determination probability.

Claims

1. A biological signal processing apparatus comprising:

a provider which provides state probability which corresponds to a value of a first biological signal;

an acquirer which acquires a first biological signal in time series from a living body and which acquires state probability in time series which corresponds to a value of the acquired first biological signal from the provider; and

a determiner which acquires determination probability based on the state probability acquired by the acquirer and which performs determination whether a process is performed or not by using the determination probability.

2. The biological signal processing apparatus according to claim 1, wherein the process includes a process of generating an alarm.

3. The biological signal processing apparatus according to claim 1, wherein the process includes a process of returning from an alarm temporary eliminated state.

4. The biological signal processing apparatus according to claim 1, wherein the process includes a process of acquiring a second biological signal.

5. The biological signal processing apparatus according to claim 1, wherein the determiner performs the determination by using a threshold.

6. The biological signal processing apparatus according to claim 5, wherein

the threshold includes an upper threshold and a lower threshold, and

the determiner performs the determination with hysteresis by using the upper threshold and the lower threshold.

7. The biological signal processing apparatus according to claim 1, wherein the determiner calculates the determination probability based on Bayes'"'"'s theorem.

8. The biological signal processing apparatus according to claim 1, further comprising:

a display; and

a display controller which displays the determination probability acquired by the determiner on the display.

9. The biological signal processing apparatus according to claim 1, further comprising:

a corrector which corrects the state probability acquired by the acquirer based on a second biological signal which is identical with or different from the first biological signal.

10. A method of controlling a medical apparatus, the method comprising:

acquiring a first biological signal in time series from a living body and acquiring state probability in time series which corresponds to a value of the acquired first biological signal; and

acquiring determination probability based on the acquired state probability and performing determination whether a process is performed or not by using the determination probability.

11. The method according to claim 10, wherein the process includes a process of generating an alarm.

12. The method according to claim 10, wherein the process includes a process of returning from an alarm temporary eliminated state.

13. The method according to claim 10, wherein the process includes a process of acquiring a second biological signal.

14. The method according to claim 10, wherein the determination is performed by using a threshold.

15. The method according to claim 14, wherein

the threshold includes an upper threshold and a lower threshold, and

the determination is performed with hysteresis by using the upper threshold and the lower threshold.

16. The method according to claim 10, wherein the determination probability is calculated based on Bayes'"'"'s theorem.

17. The method according to claim 10, further comprising:

displaying the determination probability.

18. The method according to claim 10, further comprising:

correcting the acquired state probability based on a second biological signal which is identical with or different from the first biological signal.