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Publication Number
US-12569640-B2
Publication Date
2026-03-10
Expiration Date
Abstract
A ventilator, including: a housing; a reservoir within the housing, wherein the reservoir has an internal chamber, an air inlet port, configured to place in fluid communication the internal chamber with atmospheric air, and an oxygen inlet port, configured to place in fluid communication the internal chamber with a source of oxygen; and a primary blower having an air inlet in fluid communication with the internal chamber, and an air outlet configured to be placed in fluid communication with an inspiration tube external of the ventilator housing, wherein the internal chamber presents a volume for gas mixing extending at least between the air inlet port, the oxygen inlet port and the primary blower air inlet, said volume configured for allowing mixing of air entering in the reservoir via the air inlet port with oxygen entering via the oxygen inlet port before any gas reaches the primary blower air inlet.
Core Innovation
The invention relates to an automated portable ventilator having a housing with a reservoir that mixes continuously supplied atmospheric air with oxygen before any gas reaches a primary blower. The reservoir includes an internal chamber with an air inlet port for atmospheric air and an oxygen inlet port for oxygen, and the internal chamber provides a volume for gas mixing between the air inlet port, the oxygen inlet port and the primary blower air inlet.
The ventilator further includes an exhalation pathway with an exhalation tube, an exhalation port, an exhalation conduit, and an exhalation valve configured to close during an inspiration phase and open during an exhalation phase. The exhalation valve comprises a chamber, an exhalation flow passage with an inlet coupled to the exhalation conduit and an outlet configured to discharge exhalation gas, and an opening providing fluid communication between the inlet and outlet.
A selecting element operates between the chamber and the opening of the exhalation flow passage and is selectively movable between a closed position and an open position, thereby preventing flow through the opening in the closed position and allowing flow in the open position. A switch valve provides selective switching between fluid communication with the chamber from the primary blower and from the secondary blower, with a first inlet connected to the primary blower, a second inlet connected to the secondary blower, and an outlet connected to the chamber.
Claims Coverage
The independent claim coverage describes 3 inventive features in the ventilator architecture: a reservoir for air/oxygen mixing ahead of a primary blower, an exhalation valve with a selecting element, and a switch valve that alternates between primary-blower and secondary-blower fluid communication to a chamber.
Air and oxygen mixing reservoir before the primary blower
A housing includes a reservoir internal chamber with an air inlet port configured to place the internal chamber in fluid communication with atmospheric air and an oxygen inlet port configured to place the internal chamber in fluid communication with a source of oxygen, wherein the internal chamber provides a volume for gas mixing before any gas reaches the primary blower air inlet.
Exhalation valve with selecting element that selectively blocks an exhalation flow passage
An exhalation valve is configured to control flow through the exhalation port and/or through the exhalation conduit, and comprises a chamber; an exhalation flow passage with an inlet coupled to receive exhalation gas from the exhalation conduit and an outlet configured to discharge exhalation gas; an opening providing fluid communication between the inlet and the outlet; and a selecting element movable between a closed position and an open position to prevent flow through the opening in the closed position and allow flow in the open position.
Switch valve alternating fluid communication between primary and secondary blowers
A switch valve comprises a first inlet connected to the primary blower, a second inlet connected to the secondary blower, and an outlet connected to the chamber, and is configured to switch between a first condition connecting the first inlet to the outlet and a second condition connecting the second inlet to the outlet.
The claim coverage centers on a ventilator with pre-blower air and oxygen mixing, a selectable exhalation valve, and a switch valve that alternates fluid communication between the primary blower and the secondary blower. Dependent claim content further includes controller or pilot-pressure logic tied to a set PEEP, constrained oxygen inlet flow passage cross-sectional area, and a threshold-pressure pressure relief mechanism venting to atmospheric air.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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