Method for controlling a ventilating apparatus using a simulator arrangement

• US 4,917,080 A
• Filed: 05/19/1989
• Issued: 04/17/1990
• Est. Priority Date: 05/19/1988
• Status: Expired due to Fees

• Current Assignee: Dragerwerk AG
• Original Assignee: Dragerwerk AG
• Inventors: Bayerlein, Jorg
• Primary Examiner(s): Eickholt, Eugene H.
• Application Number:
  US07/354,030
• Time in Patent Office: 333 Days
• Field of Search: 128/204.21, 128/204.23, 128/204.26, 128/671, 128/716, 128/718, 128/719, 128/720, 128/721, 128/722, 128/724, 128/725-730, 73/23, 73/195
• US Class Current: 128/204.23
• CPC Class Codes: A61M 16/00 Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes stimulating the respiratory movement by mechanical, pneumatic or electrical means, iron lungs combined with gas breathing means A61H31/00
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/104 specially adapted for anaesthetics A61M16/18 takes precedence
• CPC Class Codes: A61M 2205/702 automatically during use
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)

Abstract

The invention is directed to a method for controlling a ventilating apparatus wherein an adjustment selected according to patient data is changed for optimization after a work-in time period. A first simulator unit simulating the characteristic values of the ventilating apparatus and a second simulator unit simulating patient parameters taken from patient data are connected to a ventilating apparatus such that the new adjustment is processed first on the first simulator unit with unchanged adjustment of the ventilating apparatus. The resulting output values of the first simulator unit are coupled with the patient data of the second simulator unit such that the effects of the changed adjustment on the patient are derived as simulated new patient data. A switchover of the ventilating apparatus to the new adjustment can take palce by means of a control command.

Claims

1. A method of controlling a ventilating apparatus for which a new adjustment selected according to patient data is to be made for optimization after a work-in time period, the method comprising the steps of:

connecting both a first simulator unit defining a model of the ventilating apparatus and simulating the characteristic values of the ventilating apparatus and a second simulator unit defining a model of the patient and simulating the patient parameters derived from the patient data to said ventilating apparatus such that the new adjustment is first carried out on said first simulating unit without changing the adjustment of said ventilating apparatus thereby obtaining resulting output values at the output of said first simulator unit;

coupling said resulting output values of said first simulator unit with said patient data of said second simulator unit such that effects of the new adjustment on the patient can be derived as simulated new patient data; and

,

switching over said ventilating apparatus to said new adjustment via a control command.

2. The method of claim 1, wherein the application of the patient data to said second simulator unit is continued;

and, the parameters for said patient module are improved from this patient data thereby improving the simulation.

3. A circuit arrangement for carrying out a method of controlling a ventilating apparatus for which a new adjustment selected according to patient data is made for optimization after a work-in time period, the circuit arrangement comprising:

a plurality of sensors for sensing respective data on the patient;

a first display unit for receiving said data;

a first simulator unit defining a model of the ventilating apparatus and simulating the characteristic values thereof;

a second simulator unit connected to said sensors for also receiving said data, said second simulator unit defining a model of the patient and simulating the patient parameters derived from the patient data;

adjusting means for setting said new adjustment, said adjusting means being connected to said first simulator unit so as to permit said new adjustment to be carried out in said first simulator unit and to provide output values indicative thereof while the adjustment of said ventilating apparatus remains unchanged;

said second simulator unit having an input connected to said first simulator unit for receiving said output values thereof and coupling said output values with the patient data so as to facilitate the derivation of the effect of the new adjustment on the patient as simulated new patient data;

a second display unit connected to said second simulator unit for receiving and displaying the simulated new patient data; and

,

a control switch for selectively connecting said adjusting means to the ventilating apparatus in response to a control command for setting the ventilating apparatus to said new adjustment.