IP Library › Granted Patent US 12,370,333
Granted Patent B2
US 12,370,333 · App. 17/521,810 · Granted Jul 29, 2025

Portable medical ventilator system using portable oxygen concentrators

Inventor: Samir Saleh Ahmad (San Diego, CA)
Assignee: Ventec Life Systems, Inc.
A61M16/022A61M16/0003A61M16/0066A61M16/04A61M16/06A61M16/0672A61M16/0875A61M16/0883A61M16/101A61M16/12A61M2016/003A61M2202/0208
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Quick Facts
Patent No.
US 12,370,333
App. No.
17/521,810
Granted
Jul 29, 2025
Kind
B2
Abstract

A portable medical ventilator using pulse flow from an oxygen concentrator to gain higher oxygen concentration includes a positive pressure source to deliver pressurized air to the patient and a negative pressure source to trigger the oxygen concentrator. A patient circuit attached to a patient interface mask connects the ventilator to the patient. The ventilator includes a controller module that is configured to generate a signal to the negative pressure device to trigger the concentrator to initiate one or more pulses of oxygen from the oxygen concentrator. The oxygen pulses are delivered to the patient interface directly through multi-tube or a multi lumen patient circuit. The oxygen does not mix with air in the ventilator or in the patient circuit and bypasses the leaks in the patient circuit and/or patient interface.

Claims (30)

1. A medical ventilator for delivering a pressurized breath to a patient and to use an oxygen source to increase FiO2 delivered to the patient, comprising:

a positive pressure source; and

a negative pressure source;

wherein the negative pressure source is configured to trigger delivery of oxygen or a second gas.

2. The medical ventilator of claim 1 , wherein the oxygen source delivers a continuous flow rate of oxygen.

3. The medical ventilator of claim 1 , wherein the oxygen source is a pulsed oxygen concentrator that delivers pulses of a bolus of oxygen.

4. The medical ventilator of claim 3 , wherein the negative pressure source is configured to trigger the oxygen source by generating a negative pressure in the ventilator at any time during patient inspiration and exhalation.

5. The medical ventilator of claim 3 , wherein the ventilator is configured so that the negative pressure source causes multiple triggering of the oxygen source for oxygen bolus delivery during inspiration.

6. The medical ventilator of claim 1 , wherein the ventilation delivery interface is a member selected from the group consisting of one or more intubation tubes, a non-rebreather mask, a partial rebreather mask, a full face mask, a total face mask, a nasal cannula, a nasal mask and a nasal pillow.

7. The medical ventilator of claim 1 , wherein the ventilation delivery interface further includes a third lumen, which is at least one of triggering lumen and a monitoring lumen.

8. A method for delivering a pressurized breath to a patient and to trigger an oxygen source to increase FiO2 delivered to the patient with the medical ventilator of claim 1 , comprising:

triggering delivery of the first medical gas and the second medical gas with the third lumen;

mixing the first medical gas and the second medical gas in the one or more mixing chambers of the ventilation delivery interface just prior to delivery to the patient and bypassing any interface leaks without mixing previously in the ventilator nor the ventilator circuit.

9. A medical ventilator for use with a supplemental oxygen source, the medical ventilator comprising:

a positive pressure source configured to direct a positive pressure of an inhalation gas to a patient circuit for delivery to a patient; and

a negative pressure source configured to generate and transmit a negative pressure to the supplemental oxygen source to trigger the supplemental oxygen source to direct oxygen to the patient circuit, via the medical ventilator, for delivery to the patient.

10. The medical ventilator of claim 9 wherein the negative pressure source is an electromechanical negative pressure device.

11. The medical ventilator of claim 9 wherein the positive pressure source is a blower.

12. The medical ventilator of claim 9 , further comprising a controller configured to provide a signal to the negative pressure source to cause the negative pressure source to generate the negative pressure.

13. The medical ventilator of claim 9 , further comprising a ventilator oxygen inlet configured to receive the oxygen from the supplemental oxygen source.

14. The medical ventilator of claim 9 wherein the negative pressure generated by the negative pressure source triggers delivery of a bolus of oxygen.

15. A medical ventilator system, comprising:

a ventilator having (a) a positive pressure source configured to generate a positive pressure of an inhalation gas, and (b) a negative pressure source configured to generate and transmit a negative pressure to an oxygen source to trigger the oxygen source to release oxygen into the ventilator; and

a patient circuit having a first lumen and a second lumen, wherein the patient circuit is configured to be coupled to the ventilator;

wherein the system is further configured such that the positive pressure of inspiration gas is routed through the first lumen of the patient circuit and the oxygen is routed through the second lumen of the patient circuit.

16. The medical ventilator system of claim 15 wherein the ventilator further includes an inhalation gas outlet and an oxygen outlet, and wherein the first lumen is configured to be coupled to the inhalation gas outlet and the second lumen is configured to be coupled to the oxygen outlet.

17. The medical ventilator system of claim 15 wherein the ventilator further includes a ventilator oxygen inlet configured to receive the oxygen from the oxygen source before the oxygen is routed through the second lumen.

18. The medical ventilator system of claim 15 wherein the negative pressure source is an electromechanical negative pressure device.

19. The medical ventilator system of claim 15 wherein the positive pressure source is a blower.

20. The medical ventilator system of claim 15 , further comprising a controller configured to provide a signal to the negative pressure source to cause the negative pressure source to generate the negative pressure.

Assignments (2)
NOTICE OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Feb 17, 2023
From: VENTEC LIFE SYSTEMS, INC.
To: TRUIST BANK
Reel/Frame 062781/0470 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 9, 2022
From: AHMAD, SAMIR SALEH
To: VENTEC LIFE SYSTEMS, INC.
Reel/Frame 061041/0290 →
Continuity (3)
Continuation 16381897 · Apr 11, 2019
Provisional Application 62670856 · May 13, 2018
Related Publication 20220313932A1 · Oct 6, 2022
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