Oxygen regulation with at least two SPO2 monitors and automatic recognition of a signal having a higher rating

Patent metadata

Field	Value
Publication number	US-9254368-B2
Application number	US-201113310195-A
Country	US
Kind code	B2
Filing date	Dec 2, 2011
Priority date	Dec 2, 2011
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A process and a device for oxygen regulation of a patient having at least two SPO 2 monitors and a control for automatic recognition of which measurements are more reliable. The measurement from one or more of the two SPO 2 is used to control the oxygen concentration delivered to a patient based on a comparison of the measurements from the at least two SPO 2 monitors.

First claim

What is claimed is:

1. A process for controlling a respirator, the process comprising the steps of:
providing a first oxygen saturation monitor;
providing a second oxygen saturation monitor;
detecting a first measurement signal with said first oxygen saturation monitor, said first measurement signal comprising a first patient blood oxygen saturation measurement;
detecting a second measurement signal with said second oxygen saturation monitor, said second measurement signal comprising a second patient blood oxygen saturation measurement;
determining a measuring reliability rating for each of said first measurement signal and said second measurement signal when said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement are greater than or equal to a predetermined oxygen saturation threshold;
comparing the measuring reliability rating associated with said first measurement signal with the measuring reliability rating associated with said second measurement signal when said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement are greater than or equal to the predetermined oxygen saturation threshold to provide a comparison of measuring reliability ratings;
selecting at least one of said first measurement signal associated with said first oxygen saturation monitor and said second measurement signal associated with said second oxygen saturation monitor based on said comparison of measuring reliability ratings to define at least one selected measurement signal;
controlling an oxygen concentration delivered to the patient based on said at least one selected oxygen saturation measurement.

2. A process in accordance with claim 1 , wherein said measuring reliability rating is determined based on at least a comparison of said first patient blood oxygen saturation measurement and said second blood oxygen saturation measurement.

3. A process in accordance with claim 2 , wherein said measuring reliability rating associated with one of said first measurement and said second measurement is increased when said one of said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement is greater than another one of said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement.

4. A process in accordance with claim 3 , further comprising:
providing an electrocardiography device;
measuring the patient with said electrocardiography device to provide a reference heart rate;
detecting a first patient heart rate signal with said first oxygen saturation monitor, said first patient heart rate signal comprising a first patient heart rate measurement;
detecting a second patient heart rate signal with said second oxygen saturation monitor, said second patient heart rate signal comprising a second patient heart rate measurement;
comparing said first patient heart rate measurement with said reference heart rate measurement;
comparing said second patient heart rate measurement with said reference heart rate, wherein said measuring reliability rating is determined based on said comparison of said first patient heart rate measurement with said reference heart rate and said comparison of said second patient heart rate measurement with said reference heart rate.

5. A process in accordance with claim 4 , wherein said measuring reliability rating associated with one of said first measurement signal and said second measurement signal is increased when a difference between said reference heart rate and at least one of said first patient heart rate measurement and said second patient heart rate measurement is less than a difference between said reference heart rate and another one of said first patient heart measurement and said second patient heart rate measurement.

6. A process in accordance with claim 4 , wherein said measuring reliability rating associated with said one of said first measurement signal and said second measurement signal is greater than said measuring reliability rating associated with said another one of said first measurement signal and said second measurement signal, said at least one selected measurement signal corresponding to said one of said first measurement signal and said second measurement signal with said greater measuring reliability rating.

7. A process in accordance with claim 4 , wherein said at least one selected measurement signal comprises an average of said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement.

8. A process in accordance with claim 1 , wherein said predetermined oxygen saturation threshold is eighty percent.

9. A process in accordance with claim 8 , further comprising:
providing an alarm element;
activating said alarm element when said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement are less than said predetermined oxygen saturation threshold.

10. A process in accordance with claim 1 , further comprising:
providing an oxygen saturation bedside monitor, said oxygen saturation bedside monitor providing said second patient blood oxygen saturation measurement as output; and
transferring said second patient blood oxygen saturation measurement signal to said second oxygen saturation monitor via a network.

11. A device for controlling a respirator, the device comprising:
a first oxygen saturation monitor detecting a first measurement signal, said first measurement signal comprising a first patient blood oxygen saturation measurement;
a second oxygen saturation monitor detecting a second measurement signal, said second measurement signal comprising a second patient blood oxygen saturation measurement;
a measurement selection means for determining a reliability rating for each of said first measurement signal and said second measurement signal and for comparing said reliability rating of said first measurement signal with said reliability rating of said second measurement signal when said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement is greater than a predetermined oxygen saturation threshold and for selecting at least one of said first measurement signal and said second measurement signal based on said comparison of said measuring reliability rating associated with said first measurement signal and said measuring reliability rating associated with said second measurement signal when said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement is greater than said predetermined oxygen saturation threshold to define at least one selected measurement signal;
a means for controlling an oxygen concentration delivered to a patient based on said at least one selected measurement signal.

12. A device in accordance with claim 11 , wherein said measuring reliability rating is determined via said measurement selection means based on at least a comparison of said first patient blood oxygen saturation measurement and said second blood oxygen saturation measurement.

13. A device in accordance with claim 12 , wherein said measurement selection means increases said reliability rating associated with one of said first measurement signal and said second measurement signal when one of said first patient blood oxygen saturation measurement and said second patient blood oxygen saturation measurement is greater than another one of said first patient blood oxygen saturation measurement and said second patient blood

Assignees

• Von Blumenthal Tilman
• Null Donald
• Draegerwerk Ag & Co Kgaa

Inventors

• Von Blumenthal Tilman
• Null Donald

Classifications

• A61M2016/1025

  the O2 concentration · CPC title

• A61M16/12

  by mixing different gases · CPC title

• A61M16/16

  Devices to humidify the respiration air {(A61M16/1045 takes precedence)} · CPC title

• A61M2202/0208

  Oxygen · CPC title

• A61M2230/06

  Heartbeat rate only · CPC title