System for generating noninvasive respiratory monitor signals

• US 9,277,890 B2
• Filed: 04/30/2013
• Issued: 03/08/2016
• Est. Priority Date: 02/25/2013
• Status: Active Grant

• Current Assignee: Simulation, LLC
• Original Assignee: Dynasthetics, LLC
• Inventors: Syroid, Noah, Orr, Joseph
• Primary Examiner(s): EGLOFF, PETER RICHARD
• Application Number:
  US13/874,030
• Publication Number:
  US 20140243629A1
• Time in Patent Office: 1,043 Days
• Field of Search: 434/268
• US Class Current: 1/1
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/4836 Diagnosis combined with treatment in closed-loop systems or methods A61B5/0036 takes precedence
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence
• CPC Class Codes: A61M 16/0063 Compressors
• CPC Class Codes: A61M 16/026 specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
• CPC Class Codes: A61M 16/12 by mixing different gases
• CPC Class Codes: A61M 16/122 with dilution
• CPC Class Codes: A61M 16/204 used for inhalation control
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit
• CPC Class Codes: A61M 2202/0225 Carbon oxides, e.g. Carbon dioxide
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)
• CPC Class Codes: A61M 2230/432 partial CO2 pressure (P-CO2)
• CPC Class Codes: G09B 23/303 specially adapted to simulate circulation of bodily fluids

Abstract

A system for simulating various clinical conditions which are detectable by a noninvasive respiratory monitor is provided. The simulated clinical conditions may be displayed on a noninvasive respiratory monitor to replicate a variety of disease states to provide training for a clinician. The system may include a pulse oximetry simulation device and/or a CO₂ delivery system.

Claims

1. A system for generating simulated noninvasive respiratory monitor signals comprising:

a pulse oximetry simulation device configured to generate a first signal that is detectable by a noninvasive respiratory monitor;

a CO₂ delivery system configured to generate a second signal that is detectable by a noninvasive respiratory monitor, wherein the second signal that is detectable by a noninvasive respiratory monitor is a flow of air having a concentration of CO₂;

a control valve configured to deliver the concentration of CO₂ in the flow of air and wherein the control valve is configured to deliver a variable flow of CO₂;

a computer system disposed in communication with the pulse oximetry simulation device and the CO₂ delivery system, wherein the computer system is configured to digitally control the potentiometer to thereby modulate the first signal and the second signal;

wherein the pulse oximetry simulation device further comprises one or more photodetectors and a LED, and wherein the first signal that is detectable by the noninvasive respiratory monitor is light emitted from the LED; and

wherein the digitally controlled potentiometer is in electrical communication with the LED, and wherein the digitally controlled potentiometer is configured to modulate the intensity of the light emitted by the LED.

2. The system for generating noninvasive respiratory monitor signals according to claim 1, further comprising a flow sensor, wherein the flow sensor is in communication with the control valve to control the concentration of CO₂ in the flow of air.

3. A system for generating simulated noninvasive respiratory monitor signals comprising:

a pulse oximetry simulation device configured to generate a first signal that is detectable by a noninvasive respiratory monitor;

a CO₂ delivery system configured to generate a second signal that is detectable by a noninvasive respiratory monitor, wherein the second signal that is detectable by a noninvasive respiratory monitor is a flow of air having a concentration of CO₂;

a control valve;

a first flow sensor for measuring the pressure of air along a first flow path and a second flow sensor for measuring the pressure of CO₂ along a second flow path; and

a computer system disposed in communication with the pulse oximetry simulation device and the CO₂ delivery system, wherein the computer system is configured to digitally control the potentiometer to thereby modulate the first signal and the second signal;

wherein the pulse oximetry simulation device further comprises one or more photodetectors and a LED, and wherein the first signal that is detectable by the noninvasive respiratory monitor is light emitted from the LED;

wherein the digitally controlled potentiometer is in electrical communication with the LED, and wherein the digitally controlled potentiometer is configured to modulate the intensity of the light emitted by the LED.

4. The system for generating noninvasive respiratory monitor signals according to claim 3, further comprising a control valve, wherein the computer system produces a signal that is sent to the control valve, the signal being adjustable and dependent on the ratio of the measured pressure of air and the measure pressure of CO₂.