System and method to estimate signal artifacts

• US 20070032705A1
• Filed: 10/06/2004
• Published: 02/08/2007
• Est. Priority Date: 10/10/2003
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Ali, Walid
• Granted Patent: US 8,602,985 B2
• Time in Patent Office: Days
• US Class Current: 600/300
• CPC Class Codes: A61B 5/00 Measuring for diagnostic purposes radiation diagnosis A61B6/00; diagnosis by ultrasonic, sonic or infrasonic waves A61B8/00; Identification of persons
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/4806 Sleep evaluation A61B5/4821 takes precedence; devices for inducing sleep A61M21/02
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: G06F 2218/02 Preprocessing
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A method and system are disclosed that detect signal artifacts in one or more event signals. The system and method may be used to estimate whether a monitored signal includes artifacts based upon a statistical analysis using a transform function.

Claims

1. A device comprising:

a controller;

a memory coupled to the controller; and

an input interface arranged to received at least two event signals,

wherein the controller is arranged to determine an estimated value of at least one of the at least two event signals using a transform function and at least the other of the at least two event signals, and to determine a deviation between the estimated event signal and the at leat one event signal, and to determine whether an artifact is present in the at least one event signal in accordance with the deviation.

2. The device according to claim 1 wherein the device is a patient monitoring system.

3. The device according to claim 2 wherein the at least two event signals are patient monitored data signals.

4. The device according to claim 3 further comprising an alarm indicator coupled to the controller, the alarm indicator being triggered if no artifact was determined.

5. The device according to claim 1 further comprising a memory for recording the at least tow event signals.

6. The device according to claim 1, wherein the device is a server forming part of a client-server network.

8. The method according to claim 1 wherein the method is used with a patient monitoring system.

9. The method according to claim 8 wherein the at least two event signals are patient monitored data signals.

10. The method according to claim 9 further comprising the step of providing an alarm indication if no artifact was determined in the at least one event signal.

7. A method for detecting a signal artifact in an event signal, the method comprising the steps of:

receiving at least two event signals;

determining an estimated value of at least one of the at least two event signals using a transform function and at least the other of the at least two event signals;

determining a deviation between the estimated event signal and the at leat one event signal; and

determining whether an artifact is present in the at least one event signal in accordance with the deviation.

11. The method according to claim 7 further comprising the step of recording the at least two event signals.

12. The method according to claim 7, wherein the method is used in a server or client forming part of a client-server network.

13. A system for detecting a signal artifact in an event signal, comprising:

means for receiving at least two event signals;

means for determining an estimated value of at least one of the at least two event signals using a transform function and at least the other of the at least two event signals;

means for determining a deviation between the estimated event signal and the at leat one event signal; and

means for determining whether an artifact is present in the at least one event signal in accordance with the deviation.

14. The system according to claim 13 wherein the system is a patient monitoring system.

15. The system according to claim 14 wherein the at least two event signals are patient monitored data signals.