MONITORING DEVICE FOR A THERAPY DEVICE AND PROCESS

• US 20080011294A1
• Filed: 07/03/2007
• Published: 01/17/2008
• Est. Priority Date: 07/14/2006
• Status: Abandoned Application

• Current Assignee: Dragerwerk AG & Company KGaA (FPS Vermögensverwaltung GmbH)
• Original Assignee: Draeger Medical Incorporated (FPS Vermögensverwaltung GmbH)
• Inventors: HEESCH, Ralf, SCHMID, Robert
• Application Number:
  US11/773,042
• Publication Number:
  US 20080011294A1
• Time in Patent Office: Days
• US Class Current: 128/200.24
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/01 specially adapted for anaesthetising A61M16/104, A61M16/18 take precedence
• CPC Class Codes: A61M 16/021 operated by electrical means A61M16/202 – A61M16/205 take precedence
• CPC Class Codes: A61M 2016/103 the CO2 concentration
• CPC Class Codes: A61M 2016/1035 the anaesthetic agent concentration
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2230/432 partial CO2 pressure (P-CO2)
• CPC Class Codes: A61M 2230/437 the anaesthetic agent concentration

Abstract

A monitoring device for monitoring a therapy device, for example, an anesthesia device or a respirator, is provided by which an alarm device for triggering an alarm when the value drops beyond a warning limit (4) is automatically activated when a determined therapy parameter drops beyond this warning limit (4). The warning limit (4) is set automatically in this case. In addition, a therapy device monitored by the monitoring device and especially an anesthesia device as well as a respirator are provided. A process for triggering an alarm as well as a process for treating a patient is also provided.

Claims

1. A monitoring device for a therapy device for a patient, the monitoring device comprising:

determination means for determining a therapy parameter;

alarm means that can be activated to an activated state for triggering an alarm when said therapy parameter is beyond a warning limit in the activated state of said alarm means;

automatic alarm means for automatically activating the alarm means when the therapy parameter is beyond a threshold value.

2. A monitoring device in accordance with claim 1, further comprising a means for setting a maximum value for said warning limit.

3. A monitoring device in accordance with claim 1, further comprising a means for filtering the therapy parameter over a time period.

4. A monitoring device in accordance with claim 1, further comprising a means for filtering by means of a sliding mean value.

5. A monitoring device in accordance with claim 1, further comprising a means for setting and/or correcting said warning limit in case of changes in set values by means of a model calculation.

6. A monitoring device in accordance with claim 1, further comprising a means for deactivating the alarm means when a therapy parameter taken into account for setting said warning limit assumes a value equal to or lower than said threshold value.

7. A monitoring device in accordance with claim 1, further comprising a means for automatically setting said warning limit during anesthesia by means of a gas when a minimum alveolar concentration (MAC) value of the gas is above a lower threshold value.

8. A monitoring device in accordance with claim 7, further comprising a means for automatically setting said warning limit at a value that equals a predeterminable percentage of the lowest of the MAC values taken into account for setting said warning limit, an inspiratory MAC value and/or expiratory MAC value and/or a MAC value filtered as a function of the action time and/or another MAC value, of the gas.

9. A monitoring device in accordance with claim 7, wherein said alarm means is activated for triggering an alarm when said inspiratory MAC value and said expiratory MAC value drop beyond said threshold value.

10. A monitoring device in accordance with claim 7, wherein said alarm means has an alarm intensity increasing over the course of time and/or for calculating a point in time at which said MAC value filtered as a function of the action time of the gas will drop beyond said lower threshold value.

11. A monitoring device in accordance with claim 10, further comprising a means for calculating the point in time of the alarm as a function of an action time constant of the particular, fastest acting gas in case of the use of two or more gases.

12. A monitoring device in accordance with claim 7, further comprising a means for determining a MAC value of each gas in case of the use of two or more gases and a means for determining a respective corresponding total MAC value.

13. A monitoring device in accordance with claim 1, wherein the monitoring device is in combination with therapy device components to form a therapy device.

14. A process for triggering an alarm during the treatment of a patient via a monitoring device, the process comprising the steps of:

determining a therapy parameter;

triggering an alarm by an alarm device that can be activated in an activated state of the alarm means when the therapy parameter passes beyond a warning limit;

automatically activating the alarm means when the therapy parameter exceeds a threshold value.

15. A process in accordance with claim 14, wherein a maximum value is determined for said warning limit.

16. A process in accordance with claim 14, wherein a therapy parameter is filtered over a time period.

17. A process in accordance with claim 14, wherein a filtering of the therapy parameter is performed by means of a sliding mean value.

18. A process in accordance with claim 14, wherein changes in set values are taken into account by means of a model calculation for setting and/or correcting said warning limit.

19. A process in accordance with claim 14, wherein said warning limit is set during anesthesia by a gas when a MAC value of the gas exceeds a lower threshold value.

20. A process in accordance with claim 19, wherein said warning limit is set at a value that equals a predetermined percentage of the lowest of the values taken into account for setting said warning limit from a group of MAC values, which comprises an inspiratory MAC value and/or an expiratory MAC value and/or a MAC value filtered as a function of the action time of the gas and/or another MAC value.

21. A process in accordance with claim 19, wherein an alarm is triggered when said inspiratory MAC value and said expiratory MAC value drop beyond said threshold value.

22. A process in accordance with claim 19, wherein the alarm takes place with an intensity increasing over the course of time and/or a point in time at which said MAC value, filtered as a function of the action time, will drop beyond said lower threshold value is calculated.

23. A process in accordance with claim 19, wherein a calculation of the point in time of the alarm is performed as a function of an action time constant of the particular, fastest acting gas if two or more than two gases are used.

24. A process in accordance with claim 19, wherein the alarm device is deactivated when a value taken into account for setting said warning limit assumes a value equal to or lower than said lower threshold value.

25. A process in accordance with claim 19, further comprising the steps of:

determining a MAC value of each gas in case of the use of two or more gases; and

determining a respective corresponding total MAC value.

26. A process in accordance with claim 14, further comprising using the monitoring device as part of a therapy device.

27. A process in accordance with claim 26, further comprising using the therapy device for treating a patient based on at least one therapy parameter.

28. A therapy device for a patient, the therapy device comprising:

therapy means for treating a patient based on at least one therapy parameter;

a monitoring device including determination means for determining the value of one of the therapy parameters, an alarm device in one of an activated state and a none activated state, said alarm triggering an alarm when the one of the therapy parameters has a value beyond a warning limit in the activated state of said alarm device;

automatic alarm means for automatically activating the alarm means when the therapy parameter is beyond a threshold value.