Method and device for generating an alarm during a machine-assisted patient ventilation

An alarm and patient technology, applied in medical equipment, applications, alarms, etc., can solve problems such as indistinguishability and no known assessment

Active Publication Date: 2015-09-16
DRAGERWERK AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, no device is known today from the prior art that evaluates information about specific existing respiratory disturbances
Therefore it is not possible to distinguish between hypothetical and actual patient risk

Method used

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  • Method and device for generating an alarm during a machine-assisted patient ventilation
  • Method and device for generating an alarm during a machine-assisted patient ventilation
  • Method and device for generating an alarm during a machine-assisted patient ventilation

Examples

Experimental program
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Embodiment Construction

[0042] exist figure 1 , the temporal profile of a standard respiration is graphically shown against the evolution of three different pathological respiration patterns. when in figure 1 When the variation curve of standard respiration is shown in a relative to the volume of inhalation and exhalation, figure 1 b-1d contains views of Biot respiration, tidal respiration, and ataxia respiration.

[0043] tidal breathing ( figure 1c) is characterized in that the single breath is a waveform. This means: the tidal volume first increases and depletes, and there is apnea between individual breaths. Here, too, the breathing rate can vary.

[0044] In contrast to this, figure 1 The breath volume and frequency of the ataxia breaths shown in d are different, wherein here too the breathing maneuver can be interrupted due to longer pauses, ie apnea.

[0045] exist figure 1 In the Biot respiration shown in b it is important that a continuous, uniform and sufficiently deep respiration i...

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PUM

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Abstract

A device and process generates an alarm during a machine-assisted ventilation of a patient. A minute volume is measured and a median of the minute volume and a lower critical limit value of the minute volume and a time delay are determined and are recorded in a control device. A reference signal is determined as a function of the lower critical limit value for the minute volume and the time delay based on the median of the minute volume. From the reference signal an alarm limit value located below the lower critical limit value as well as a value for a maximum tolerated duration of apnea of the patient are derivable. An alarm signal is generated both during an undershooting of the lower critical limit value over a period of time that is longer than the established time delay and during an undershooting of the alarm limit value.

Description

technical field [0001] The invention relates to a method and a device for generating an alarm during mechanical patient ventilation according to the preamble of claim 1 . Furthermore, the invention relates to a controller and to software executed in the controller for carrying out the method. Background technique [0002] In many cases, artificial ventilation is required when treating patients, for example in the field of intensive care, during surgery or in emergency situations. Depending on the application, the external device here completely takes over the ventilation or support of the patient. Thus, for example, ventilation devices without a rebreather are used for artificial ventilation of patients in intensive care units in hospitals, whereas in anesthesia devices with a closed system the expiratory gas exhaled by the patient continues to be used as inspiratory gas. The solution for generating an alarm explained in detail below can be used both for a correspondingly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/02A61B5/091G16Z99/00
CPCA61M2205/3386A61M2205/18A61M16/0051A61B5/091G08B21/02G16Z99/00A61M2016/0033A61B5/746A61M16/021G16H40/63A61M16/024
Inventor 比尔格·兰德韦尔
Owner DRAGERWERK AG
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