Portable light-weight ventilator system
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Publication Number
US-11291785-B2
Publication Date
2022-04-05
Expiration Date
Abstract
A ventilator system for providing respiratory support in cases of acute respiratory failure or severe trauma is described. The ventilator system has a ventilator and a tubing system. The system is characterized in that the ventilator has a continuous bleed valve configured to be open to air flow from the blower at all times when the blower is operating during both inspiration and expiration; thereby providing a minimal amount of pressure within a patient's lungs at the end of each exhalation—positive end expiratory pressure (PEEP). In an embodiment of the invention the system comprises a manifold block configured to hold the main operating elements of the ventilator.
Core Innovation
The invention provides a portable positive pressure ventilator system for providing respiratory support to a patient. The system includes a ventilator with a source of pressurized air, a manifold assembly, and a tubing system connected to the ventilator and the patient. The manifold assembly holds main operating components of the ventilator and a continuous bleed aperture.
The invention maintains respiratory support by providing a continuous flow of air via the continuous bleed aperture to the tubing system at all times while the source of pressurized air is operating. The continuous bleed aperture is formed as a small diameter hole that passes through a wall within the manifold block.
Within the manifold assembly, the manifold block includes three chambers formed within the interior of the manifold block. A first chamber comprises a diaphragm of a main inspiratory valve, a second chamber is configured as an inspiratory valve first connector for gas entering the manifold block, and a third chamber is configured as an inspiratory valve second connector connected on a distal end to the tubing system leading to the patient.
A wall separates the second chamber from the third chamber, and an opening leading from the first chamber into the second chamber is opened and closed by the diaphragm of the main inspiratory valve when activated by an inspiratory valve controller. The manifold block also creates outlet paths needed for fluidly connecting and operating the main operating components, and includes an outlet for an anti-asphyxia valve. Inspiratory and exhalation valve controllers are attached to exterior surfaces of the manifold block.
Claims Coverage
The provided content contains one independent claim, directed to a portable positive pressure ventilator system with a manifold block containing a continuous bleed aperture that provides continuous flow to the tubing system whenever the pressurized air source is operating. The claim also specifies the three-chamber manifold block, the diaphragm main inspiratory valve arrangement, the inspiratory and exhalation valve controllers, and an anti-asphyxia valve outlet.
Portable positive pressure ventilator system with continuous bleed aperture
A portable positive pressure ventilator system for providing respiratory support to a patient, including a ventilator with a source of pressurized air, a manifold assembly, and a tubing system connected to the ventilator and to the patient, where the manifold assembly comprises a manifold block holding main operating components and a continuous bleed aperture, and where, at all times while the source of pressurized air is operating, the ventilator provides a continuous flow of air via the continuous bleed aperture to the tubing system.
Three-chamber manifold block with diaphragm main inspiratory valve
A manifold block comprising three chambers formed within an interior of the manifold block: a first chamber comprising a diaphragm of a main inspiratory valve, a second chamber configured as an inspiratory valve first connector into which gas from the source of pressurized air enters the manifold block, and a third chamber configured as an inspiratory valve second connector connected on a distal end of the third chamber to the tubing system that leads to the patient; wherein a wall separates the second chamber from the third chamber, and an opening leading from the first chamber into the second chamber is opened and closed by the diaphragm of the main inspiratory valve when activated by the inspiratory valve controller.
Continuous bleed aperture as small diameter hole through manifold wall
The manifold block includes a small diameter hole that passes through the wall, and the small diameter hole is configured to be the continuous bleed aperture.
Manifold-integrated valve controller and anti-asphyxia outlet
An outlet for an anti-asphyxia valve and all flow paths needed for fluidly connecting and operating the main operating components of the ventilator are created within walls of the manifold block; and an inspiratory valve controller and an exhalation valve controller are attached to exterior surfaces of the manifold block.
The inventive focus is the combination of a portable positive pressure ventilator system with a manifold block that contains a continuous bleed aperture configured as a small diameter hole through a separating wall, providing continuous airflow to the tubing whenever the pressurized air source is operating, while integrating a three-chamber diaphragm main inspiratory valve arrangement with inspiratory and exhalation valve controllers and an anti-asphyxia valve outlet.
Stated Advantages
Provides continuous flow via the continuous bleed aperture while the source of pressurized air is operating.
Enables maintaining positive end expiratory pressure (PEEP) without turbine RPM fluctuations.
Reduces the need to compensate for small leaks.
Minimizes CO2 accumulation via dilution.
Reduces size and weight via compact manifold block and internal pneumatic channels.
Documented Applications
Respiratory support for a patient using the portable positive pressure ventilator system.
Use in positive pressure ventilation for acute respiratory failure and severe trauma [application context stated in provided partial content].
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