Procedure for the control of a respirator device as well as apparatus for monitoring

• US 7,305,987 B2
• Filed: 03/23/2001
• Issued: 12/11/2007
• Est. Priority Date: 03/24/2000
• Status: Expired due to Term

• Current Assignee: Gottlieb Weinmann Gerate Fur Medizin Und Arbeitsschutz GmbH & Co.
• Original Assignee: Gottlieb Weinmann Gerate Fur Medizin Und Arbeitsschutz GmbH & Co.
• Inventors: Schöller, Bernd, Graetz, Bernd, Maurer, Jörg
• Primary Examiner(s): Douglas, Steven O.
• Application Number:
  US09/816,014
• Publication Number:
  US 20010039950A1
• Time in Patent Office: 2,454 Days
• Field of Search: 128/204.18, 128/204.22, 128/204.25, 128/204.26, 128/205.29, 128/205.25, 128/204.21, 128/204.23, 128/202.22
• US Class Current: 128/204.18
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/085 Measuring impedance of respiratory organs or lung elasticity
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61B 7/003 Detecting lung or respiration noise
• CPC Class Codes: A61M 16/0006 with means for creating vibrations in patients' airways
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/0069 the speed thereof being controlled by respiratory parameters, e.g. by inhalation
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• CPC Class Codes: A61M 2016/0036 in the breathing tube and used in both inspiratory and expiratory phase

Abstract

The procedure and the apparatus serve for the control of a respirator device which is used for the supply of breathable gas to a patient. At least one sensor for the capture of the time-wise evolution of at least one respirator-treatment parameter is provided. The sensor can be arranged in the area of an air delivery which encompasses a respirator device as well as a connecting installation. The sensor is connected to an analyzer which carries out a pattern recognition and which is connected to a control for the modification of at least one respirator-treatment parameter. In order to implement the pattern recognition, one captures—at least at intervals—the time-wise evolution of at least one of the respirator-treatment parameters.

Claims

1. A procedure for the control of a respirator device, in which one can set at least two different pressure levels for a breathable gas supply, comprising:

capturing at least one respirator-treatment parameter by measurement technique; and

evaluating the at least one respirator-treatment parameter for the control of a respirator-treament pressure, wherein the at least one respirator-treatment parameter is modified as a function of a pattern recognition, and wherein, in order to carry out the pattern recognition, a time-wise evolution of the at least one respirator-treatment parameter is captured, at least at intervals, and is analyzed with respect to typical evolution patterns;

based on a pattern recognition, analyzing at least one characteristic of the respirator device selected from the group consisting of defect, reduced performance, leak in the region of the apparatus or in the region of a hose connection; and

when the analyzing yields a result indicating a functional disturbance or an increased risk of device failure, generating a signal indicative of the functional disturbance or the risk of device failure;

wherein the two different pressure levels of the respirator device are higher than the air pressure of the environment to support a device function in CPAP therapy.

2. A procedure according to claim 1, wherein an existing pressure level for breathing support is overlaid, at least temporarily, with a stimulating stream oscillating at a defined frequency.

3. A procedure according to claim 1, wherein after a selective evaluation of an oscillatory pressure amplitude, occurring with a frequency of a stimulating stream in the air delivery of a patient, corresponding to a breathing resistance of the patient, a selection of the respective pressure amplitude is carried out.

4. A procedure according to claim 3, wherein at least one electrical signal is evaluated during the pattern recognition.

5. A procedure according to claim 1, wherein a physical signal is evaluated during the pattern recognition.

6. A procedure according to claim 3, wherein a derivation of classes of errors is implemented in a context of the pattern recognition.

7. A procedure according to claim 1, wherein an OPS signal (Oscillating Pressure Signal) is evaluated.

8. A procedure according to claim 1, wherein a static pressure signal is evaluated.

9. A procedure according to claim 1, wherein a pressure variation is evaluated.

10. A procedure according to claim 1, wherein a flow signal is evaluated.

11. A procedure according to claim 1, wherein a signal proportional to at least one of the flow signal and a pressure-dependent signal is evaluated.

12. A procedure according to claim 1, wherein an electrical-drive parameter of a compressed-gas supply is evaluated.

13. A procedure according to claim 1, wherein, in the pattern recognition, distinctive form features are evaluated.

14. A procedure according to claim 1, wherein, in the pattern recognition, distinctive time features are evaluated.

15. A procedure according to claim 1, wherein, following the pattern recognition, a class assignment is carried out.