Respiration device and method for a respiration device

Patent metadata

Field	Value
Publication number	US-10159810-B2
Application number	US-201514834686-A
Country	US
Kind code	B2
Filing date	Aug 25, 2015
Priority date	Aug 28, 2014
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

The present invention relates to a method and a respiration device having a respiration unit for generating an airflow for the respiration and having a monitoring unit. The monitoring unit is used to detect a respiration parameter and to classify events in the respiration on the basis of monitoring of the respiration parameter. In this case, the monitoring unit is able and designed to carry out an event analysis to recognize an occurrence, which is characteristic for Cheyne-Stokes respiration, of chronologically successive events and for this purpose to ascertain the period length thereof and to compare them to one another and to register the presence of Cheyne-Stokes respiration when the compared period lengths each deviate by less than 40% from one another.

First claim

What is claimed is:

1. A respiration device, wherein the device comprises at least one respiration unit for generating an airflow for respiration and at least one monitoring unit for detecting at least one respiration parameter and for classifying events in the respiration on the basis of monitoring of the at least one respiration parameter, the monitoring unit being configured to carry out at least one event analysis to recognize an occurrence of chronologically successive events which is characteristic for Cheyne-Stokes respiration and for this purpose to ascertain period lengths between the chronologically successive events and to compare ascertained period lengths at least partially to one another and to register a presence of Cheyne-Stokes respiration when the compared period lengths deviate by less than 40% from one another.

2. The respiration device of claim 1 , wherein the monitoring unit is configured to carry out at least one event analysis for recognizing an occurrence of at least three chronologically successive events which is characteristic for Cheyne-Stokes respiration and for this purpose to ascertain at least one first period length between a first event and a second event and one second period length between a second event and a third event and to at least partially compare them to one another and to register a presence of Cheyne-Stokes respiration when the first period length and the second period length deviate from one another by less than 40%.

3. The respiration device of claim 1 , wherein the monitoring unit is configured to carry out at least one event analysis for recognizing an occurrence of at least four chronologically successive events which is characteristic for Cheyne-Stokes respiration and for this purpose to ascertain at least one first period length between a first event and a second event and one second period length between a second event and a third event and one third period length between a third event and a fourth event and to at least partially compare them to one another and to register a presence of Cheyne-Stokes respiration when the first period length and the second period length and also the second period length and the third period length each deviate by less than 40% from one another.

4. The respiration device of claim 3 , wherein the monitoring unit is configured to register the presence of Cheyne-Stokes respiration when the first period length and the second period length and also the second period length and the third period length each deviate by less than 35%.

5. The respiration device of claim 3 , wherein the monitoring unit is configured to register the presence of Cheyne-Stokes respiration when the first period length and the second period length and also the second period length and the third period length each deviate by less than 30%.

6. The respiration device of claim 1 , wherein the period lengths extend between a chronological middle of one event and a chronological middle of a following event.

7. The respiration device of claim 1 , wherein the monitoring unit is configured to sort events into at least two relevance classes, comprising at least one first relevance class comprising events which are relevant for Cheyne-Stokes respiration and at least one second relevance class comprising events which are irrelevant for Cheyne-Stokes respiration.

8. The respiration device of claim 7 , wherein the first relevance class comprises at least events of a hyperventilation and/or a hypoventilation and/or a hypopnea and/or an apnea and/or the second relevance class comprises at least events of inspiration, expiration, snoring, swallowing, speaking, nose blowing, and/or coughing, and/or a respiration interruption and/or a leak.

9. The respiration device of claim 7 , wherein the monitoring unit is configured to sort the events of the first relevance class into at least two validity classes for the event analysis, comprising a first validity class comprising events which typically occur in the case of Cheyne-Stokes respiration and a second validity class comprising events which typically do not occur in the case of Cheyne-Stokes respiration.

10. The respiration device of claim 9 , wherein the first validity class comprises at least events of a central apnea and/or a central hypopnea and/or the second validity class comprises at least events of an obstructive apnea and/or an obstructive hypopnea.

11. The respiration device of claim 9 , wherein the monitoring unit is configured to register the presence of Cheyne-Stokes respiration when at least three events occur in chronological succession and in this case at least two of the at least three events correspond to the first validity class and at most one event of the at least three events corresponds to the second validity class.

12. The respiration device of claim 1 , wherein the monitoring unit is configured to register the presence of Cheyne-Stokes respiration when a first and a second and a third period length are each at least 35 seconds and at most 95 seconds.

13. The respiration device of claim 1 , wherein the monitoring unit is configured to register the presence of Cheyne-Stokes respiration when a chronological duration of each one of the events taken into consideration for the event analysis is at most 80% of the period length.

14. The respiration device of claim 13 , wherein the monitoring unit is configured to register the presence of Cheyne-Stokes respiration when a chronological duration of each one of the events taken into consideration for the event analysis is at most 70% of the period length.

15. The respiration device of claim 1 , wherein the monitoring unit is configured to monitor at least one flow signal and/or at least one pressure signal from at least one associated sensor unit to detect at least one flow property and/or at least one pressure property of an airflow for the respiration and to analyze it on the basis of at least one algorithm, in order to classify an event.

16. The respiration device of claim 1 , wherein the monitoring unit is configured to output a corresponding notification to a user in the event of registered Cheyne-Stokes respiration and/or to consider it as a corresponding respiratory disturbance in a respiration statistic.

17. A method for operating a respiration device comprising at least one respiration unit for generating an airflow for respiration and at least one monitoring unit for detecting at least one respiration parameter and for classifying events in the respiration on the basis of monitoring of the respiration parameter, wherein, on the basis of at least one event analysis, at least one occurrence of chronologically successive events is recognized, which is characteristic for Cheyne-Stokes respiration, and for the event analysis, period lengths are ascertained between chronologically successive events and at least partially compared to one another, and a presence of Cheyne-Stokes respiration is registered when the compared period lengths deviate from one another by less than 40%.

18. The method of claim 17 , wherein three period lengths between at least four chronologically successive events are at least partially compared to one another and a presence of Cheyne-Stokes respiration is registered when all three compared period lengths each deviate from one another by less than 40%.

19. The method of claim 17 , wherein the method further comprises sorting events into at least two relevance classes, at least one first relevance class comprising events which are relevant for Cheyne-Stokes respiration and at least one seco

Assignees

• Weinmann Geraete Fuer Medizin Gmbh & Co Kg
• Loewenstein Medical Tech Sa

Inventors

• Doemer Benno
• Klausmann Dominic

Classifications

• G16H50/20

  for computer-aided diagnosis, e.g. based on medical expert systems · CPC title

• A61M2230/42

  Rate · CPC title

• A61M16/0069 Primary

  the speed thereof being controlled by respiratory parameters, e.g. by inhalation · CPC title

• A61B5/0826

  Detecting or evaluating apnoea events (sleep apnoea A61B5/4818) · CPC title

• A61M2205/50

  with microprocessors or computers · CPC title