IP Library › Granted Patent US 12,434,026
Granted Patent B2
US 12,434,026 · App. 18/161,762 · Granted Oct 7, 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 12,434,026
App. No.
18/161,762
Filed
Jan 30, 2023
Granted
Oct 7, 2025
Kind
B2
Art Unit
3612
USPC
128/204.26
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 (40)

1. A system for delivering at least two gases to a patient, the system comprising:

a respiratory device including:

a pressurized gas outlet configured to release a pressurized gas, and

a secondary gas outlet configured to release a second gas;

a patient mask;

a patient circuit for delivering the pressurized gas and the second gas to the patient mask, the patient circuit including:

a first lumen configured to fluidly couple the pressurized gas outlet to the patient mask, and

a second lumen configured to fluidly couple the secondary gas outlet to the patient mask,

wherein the patient circuit is configured to be coupled to a side of the patient mask relative to an orientation of the patient mask when the patient mask is worn by the patient such that the pressurized gas and the second gas enter the patient mask from the side; and

a leak structure,

wherein the system is configured such that (a) some of the pressurized gas leaks to an environment external to the patient mask and the patient circuit via the leak structure during delivery of the pressurized gas, and (b) the second lumen bypasses the leak structure such that the second gas does not leak to the environment external to the patient mask and the patient circuit via the leak structure during delivery of the second gas.

2. The system of claim 1 wherein the patient mask includes a non-rebreather mask, a partial rebreather mask, and/or a nasal mask.

3. The system of claim 1 wherein the patient mask is configured to cover a nose and mouth of the patient when the patient mask is worn by the patient.

4. The system of claim 1 wherein the patient circuit is configured to be coupled to a single side of the patient mask such that the pressurized gas and the second gas enter the patient mask from a single side of the patient mask.

5. The system of claim 1 wherein the pressurized gas includes ventilation gases, and wherein the second gas includes oxygen.

6. The system of claim 1 wherein the respiratory device includes a ventilator.

7. The system of claim 1 wherein the leak structure is positioned along the patient circuit and in fluid communication with the first lumen.

8. The system of claim 1 wherein the patient circuit includes a third lumen for triggering delivery of the pressurized gas and/or the second gas.

9. A delivery interface system for delivering at least two gases to a patient, the delivery interface system comprising:

a patient mask configured to be worn by a patient;

a patient circuit for delivering a pressurized ventilation gas and oxygen to the patient mask, the patient circuit including:

a first lumen configured to deliver the pressurized ventilation gas to the patient mask, and

a second lumen configured to deliver the oxygen to the patient mask,

wherein the patient circuit is configured to be coupled to be coupled to a side of the patient mask relative to an orientation of the patient mask when the patient mask is worn by the patient such that the pressurized ventilation gas and the oxygen enter the patient mask from the side; and

a leak structure,

wherein (a) the first lumen is configured to be in fluid communication with the leak structure such that some of the pressurized ventilation gas leaks to an environment external to the patient mask and/or the patient circuit via the leak structure during delivery of the pressurized ventilation gas, and (b) the second lumen bypasses the leak structure such that the oxygen does not leak to the environment external to the patient mask and/or the patient circuit via the leak structure.

10. The system of claim 9 wherein the leak structure is positioned along the patient circuit and in fluid communication with the first lumen.

11. The system of claim 9 wherein the patient circuit is configured to be coupled to a single side of the patient mask such that the pressurized gas and the second gas enter the patient mask from a single side of the patient mask.

12. The system of claim 9 wherein the patient mask includes a non-rebreather mask, a partial rebreather mask, and/or a nasal mask.

13. The system of claim 9 wherein the patient mask is configured to cover a nose and mouth of the patient when the patient mask is worn by the patient.

14. The system of claim 9 wherein the patient mask is configured to define a chamber in fluid communication with the patient's nose and/or mouth, the patient mask further including an inlet configured to permit the pressurized gas and the oxygen to enter the chamber.

15. A patient delivery interface assembly for delivering a pressurized gas and a second gas to a patient, the delivery interface assembly comprising:

a mask structure configured to define a chamber at least partially covering the patient's mouth and/or nose, wherein the mask structure is configured to form a seal at the user's mouth and/or nose and includes an inlet in a single side of the mask structure relative to an orientation of the mask structure when the mask structure is worn by the patient, the inlet being configured to permit the pressurized gas and the second gas to enter the chamber; and

a leak structure fluidly coupling an interior of the patient delivery interface assembly to an environment external to the patient delivery interface assembly,

wherein the patient delivery interface assembly is configured such that (a) at least some of the pressurized gas leaks to the external environment via the leak structure during delivery of the pressurized gas, and (b) the second gas does not leak to the external environment via the leak structure during delivery of the second gas.

16. The delivery interface assembly of claim 15 wherein the patient mask includes a non-rebreather mask, a partial rebreather mask, and/or a nasal mask.

17. The delivery interface assembly of claim 15 wherein the mask is configured such that the pressurized gas and the second gas mix in the chamber before being delivered to the patient.

18. The delivery interface assembly of claim 15 wherein the pressurized gas includes ventilation gas and the second gas includes oxygen.

19. The delivery interface assembly of claim 15 wherein the mask structure includes the leak structure.

20. The delivery interface assembly of claim 15 wherein the delivery interface assembly is configured for use with a dual-lumen patient circuit having a first lumen for delivering the pressurized gas to the delivery interface assembly and a second lumen for delivering the second gas to the delivery interface assembly.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 30, 2023
From: AHMAD, SAMIR SALEH
To: VENTEC LIFE SYSTEMS, INC.,
Reel/Frame 062537/0132 →
Continuity (4)
Continuation 17521810 · Nov 8, 2021
Continuation 16381897 · Apr 11, 2019
Provisional Application 62670856 · May 13, 2018
Related Publication 20230173206A1 · Jun 8, 2023
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