Mechanical ventilator system

• US 20090133695A1
• Filed: 03/21/2008
• Published: 05/28/2009
• Est. Priority Date: 11/27/2007
• Status: Abandoned Application

• Current Assignee: Chamkurkishtiah P. Rao, Diana C. Lister
• Original Assignee: Chamkurkishtiah P. Rao, Diana C. Lister
• Inventors: LISTER, DIANA C., RAO, CHAMKURKISHTIAH P.
• Application Number:
  US12/076,751
• Publication Number:
  US 20090133695A1
• Time in Patent Office: Days
• US Class Current: 128/204.220
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/0836 Measuring rate of CO2 production
• 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 5/6801 specially adapted to be attached to or worn on the body surface
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61M 16/0003 Accessories therefor, e.g. sensors, vibrators, negative pressure
• 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 16/1005 with O2 features or with parameter measurement
• CPC Class Codes: A61M 16/12 by mixing different gases
• CPC Class Codes: A61M 16/125 Diluting primary gas with ambient air
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit
• CPC Class Codes: A61M 2016/1025 the O2 concentration
• CPC Class Codes: A61M 2230/06 Heartbeat rate only
• CPC Class Codes: A61M 2230/205 partial oxygen pressure (P-O2)

Abstract

The mechanical ventilator system is a compact and portable artificial respiration system. A negative pressure vortex generator delivers an FiO₂ mix from an air-oxygen blender to the patient during the patient'"'"'s inhalations, but remains idle during the patient'"'"'s exhalations. Exhaust gases generated by the patient are released through an exhaust gas valve. During operation, the patient'"'"'s oxygen saturation level is measured by an infrared pulse-oxygen probe, and an FiO₂ autoregulator is in communication with the probe to receive oxygen saturation level signals. The FiO₂ autoregulator is coupled with the air-oxygen blender to control the oxygen proportion of the FiO₂ mix. An automatic pressure flow sensor is fluidly coupled with the patient'"'"'s airway to control actuation of the negative pressure vortex generator. The automatic flow sensor is coupled with a controller, which actuates a vortex generator trigger circuit in communication with the vortex generator.

Claims

1. A mechanical ventilator system, comprising:

a negative pressure vortex generator;

means for measuring oxygen saturation in a patient'"'"'s blood;

an air-oxygen blender for outputting oxygen to the patient;

means for delivering the output from the air-oxygen blender to the patient, the means for delivering the output being in fluid communication with the negative pressure vortex generator and the air-oxygen blender, the means for delivering the output from the air-oxygen blender to the patient being actuated during the patient'"'"'s inhalations and being idle during the patient'"'"'s exhalations;

means for controlling a fraction of inspired oxygen in the output from the air-oxygen blender, the means for controlling being in communication with the means for measuring oxygen saturation in a patient'"'"'s blood; and

means for controlling positive end-expiratory pressure of expired air from the patient, the means for controlling positive end-expiratory pressure being in communication with the negative pressure vortex generator.

2. The mechanical ventilator system as recited in claim 1, wherein the means for controlling the fraction of inspired oxygen in the output from the air-oxygen blender comprises a stepper motor.

3. The mechanical ventilator system as recited in claim 1, wherein the means for measuring oxygen saturation in the patient'"'"'s blood comprises a sensor adapted to be worn by the patient.

4. The mechanical ventilator system as recited in claim 3, wherein the sensor comprises an infrared pulse oxygen probe.

5. The mechanical ventilator system as recited in claim 1, further comprising means for selectively actuating said negative pressure vortex generator.

6. The mechanical ventilator system as recited in claim 5, further comprising an automatic flow sensor in communication with the means for selectively actuating said negative pressure vortex generator.

7. The mechanical ventilator system as recited in claim 6, wherein the automatic flow sensor is a pressure sensor.

8. The mechanical ventilator system as recited in claim 6, wherein the automatic flow sensor is a carbon dioxide sensor.

9. The mechanical ventilator system as recited in claim 1, further comprising means for measuring and controlling the output from the air-oxygen blender being delivered to the patient.

10. The mechanical ventilator system as recited in claim 9, wherein the means for measuring and controlling the output comprises at least one pressure gauge.

11. The mechanical ventilator system as recited in claim 1, further comprising a display in communication with the air-oxygen blender and the means for measuring oxygen saturation in a patient'"'"'s blood.

12. A mechanical ventilator system, comprising:

means for measuring oxygen saturation in a patient'"'"'s blood;

an air-oxygen blender for outputting oxygen to the patient;

means for delivering the output from the air-oxygen blender to the patient, the means for delivering the output being in fluid communication with the air-oxygen blender, the means for delivering the output being actuated during the patient'"'"'s inhalations and being idle during the patient'"'"'s exhalations;

a stepper motor coupled with the air-oxygen blender for controlling a fraction of inspired oxygen in the output from the air-oxygen blender, the stepper motor being in communication with the means for measuring oxygen saturation in a patient'"'"'s blood; and

means for displaying the oxygen saturation of the patient'"'"'s blood.

13. The mechanical ventilator system as recited in claim 12, further comprising a negative pressure vortex generator, the negative pressure vortex generator being in fluid communication with the means for delivering the output from the air-oxygen blender to the patient.

14. The mechanical ventilator system as recited in claim 12, wherein the means for measuring oxygen saturation in a patient'"'"'s blood comprises a sensor adapted to be worn by the patient.

15. The mechanical ventilator system as recited in claim 14, wherein the sensor is an infrared pulse oxygen probe.

16. The mechanical ventilator system as recited in claim 15, further comprising a pulse oxygen controller in communication with the infrared pulse oxygen probe and the stepper motor.

17. The mechanical ventilator system as recited in claim 16, further comprising a stepper motor controller in communication with the pulse oxygen controller and the stepper motor.

18. The mechanical ventilator system as recited in claim 17, further comprising means for processing pulse-oxygen data in communication with the pulse oxygen controller and the stepper motor controller, the means for processing pulse-oxygen data transmitting control signals to the stepper motor controller responsive to measured levels of the oxygen saturation of the patient'"'"'s blood.

19. The mechanical ventilator system as recited in claim 12, further comprising means for measuring the patient'"'"'s heart rate.

20. The mechanical ventilator system as recited in claim 19, further comprising means for displaying the patient'"'"'s heart rate.