Device and process for controlling the depth of sedation of a mechanically respirated patient
First Claim
1. A device for controlling the depth of sedation of a mechanically respirated patient, the device comprising:
- a respirator;
a sensor array detecting a tidal volume and/or a respiration rate of the patient being respirated with said respirator;
a computing unit calculating measured values detected with the sensor array;
a drug regulating unit;
a drug dispensing unit for dispensing a drug to the patient being respirated; and
a central control device with stored desired values for a drug concentration to be dispensed as a function of a preselected depth of sedation corresponding to a corresponding variability over time of the tidal volume and/or the respiration rate, wherein the drug regulating unit sets the drug dispensing unit as a function of the detected tidal volume and/or the respiration rate for a preselected depth of sedation of the patient, wherein the measured values determined in the computing unit are calculated into parameters for the variability over time of the respiration rate and/or the tidal volume.
3 Assignments
0 Petitions
Accused Products
Abstract
A device is provided for controlling the depth of sedation of a respirated patient. The device includes a respirator (2) and a sensor array (1) for detecting the tidal volume and/or the respiration rate of the patient being respirated. A computing unit (5) is provided for calculating the measured values determined with the sensor array (1). A drug regulating unit (3), a drug dispensing unit (4), and a central control device (6) are provided. The central control device (6) has stored desired values for the drug concentration to be dispensed as a function of a preselected depth of sedation corresponding to the corresponding variability over time of the tidal volume and/or respiration rate. The drug regulating unit (3) sets the drug dispensing unit (4) as a function of the tidal volume detected and/or the respiration rate for a preselected depth of sedation of the patient.
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Citations
17 Claims
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1. A device for controlling the depth of sedation of a mechanically respirated patient, the device comprising:
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a respirator; a sensor array detecting a tidal volume and/or a respiration rate of the patient being respirated with said respirator; a computing unit calculating measured values detected with the sensor array; a drug regulating unit; a drug dispensing unit for dispensing a drug to the patient being respirated; and a central control device with stored desired values for a drug concentration to be dispensed as a function of a preselected depth of sedation corresponding to a corresponding variability over time of the tidal volume and/or the respiration rate, wherein the drug regulating unit sets the drug dispensing unit as a function of the detected tidal volume and/or the respiration rate for a preselected depth of sedation of the patient, wherein the measured values determined in the computing unit are calculated into parameters for the variability over time of the respiration rate and/or the tidal volume. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 11)
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9. A process of controlling the depth of sedation of a mechanically respirated patient, the process comprising the steps of:
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providing a respirator and respirating a patient with said respirator; providing a sensor array for detecting the tidal volume and/or a respiration rate of the patient being respirated with said respirator; providing a computing unit; calculating measured values detected with said sensor array using said computing unit; providing a drug regulating unit; providing a drug dispensing unit; providing a central control device with stored desired values for a drug concentration to be dispensed as a function of a preselected depth of sedation corresponding to a corresponding variability over time of the tidal volume and/or the respiration rate; dispensing a drug with the drug dispensing unit to the patient being respirated for inducing sedation using a preset drug dispensing rate having a desired depth of sedation corresponding to the actual depth of sedation; switching on the drug regulating unit, so that a time-dependent tidal volume flow and/or the respiration rate of the patient is measured; calculating parameters that represent the variability over time of the tidal volume and/or the respiration rate from the measured values and determining corresponding depths of sedation by means of classification or assessment rules using the central control device; and setting drug dispensing for a preset desired depth of sedation based on stored rules for the relationship between the depth of sedation and the drug concentration to be dispensed wherein the drug regulating unit sets the drug dispensing unit as a function of the parameters that represent the variability of the detected tidal volume and/or the respiration rate for the preselected depth of sedation of the patient. - View Dependent Claims (10)
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12. A process of controlling a depth of sedation of a patient, the process comprising the steps of:
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predetermining a desired depth of sedation for the patient; determining an initial drug dosage to place the patient at the desired depth of sedation; administering the initial drug dosage to the patient; measuring respiration of the patient over time after said administration of the initial drug dose; calculating a respiration variability parameter representing how the respiration varies over time from said measuring step; equating the respiration variability parameter with an actual depth of sedation; comparing said desired depth of sedation with said actual depth of sedation; selectively administering future drug dosages to the patient to minimize a difference between the desired depth of sedation and the actual depth of sedation. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification