Low flow percussive respiratory apparatus and related treatment
Inventors
Lee, James I-Che • Saied, Abdolreza • Thomson, Glen M.
Assignees
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Publication Number
US-11389605-B2
Publication Date
2022-07-19
Expiration Date
Abstract
A valve assembly attached to a capacitor such that pressurizing the capacitor to a first positive pressure threshold induces the valve assembly to open, the pressurized air is released to the patient, and then as the pressure in the capacitor drops to a second pressure threshold the valve closes and the capacitor begins to build pressure until the first positive pressure threshold is achieved and the process repeats. Relative to the valve assembly and integrated therein, is an incrementally adjustable index knob to vary the rate of a biasing force performing work against the actionable valve face of the diaphragm functional surface to set the performance of the valve assembly, thereby increasing the potential for correct operation across a range of oscillating rates supporting a broad spectrum of patient therapies and types.
Core Innovation
The invention relates to a percussive respiratory apparatus that uses a pneumatic valve assembly with a diaphragm positioned in a housing. The diaphragm moves between a first position and a second position to control whether a fluidic communication port is closed or spaced from the diaphragm, and a biasing member applies a force on the diaphragm to move it from the second position to the first position. An adjustable knob varies the force applied by the biasing member.
The apparatus includes a gas receiving chamber in fluidic communication with a first fluidic communication port. When the diaphragm moves from the first position, gas within the gas receiving chamber moves through the first and second fluidic communication ports to a patient interface through at least a first pathway, and when the diaphragm is in the first position, no gas exits the receiving chamber.
The patient interface includes a divided lumen having at least a first pathway adapted to provide an inhalation fluid and at least a second pathway adapted to channel exhalation fluid away from a patient. Dependent embodiments add a nebulizer assembly connected in fluid communication with the patient interface and an entrainment valve assembly connected to the gas receiving chamber with a third fluidic communication port that draws fluid from an external source into the entrainment valve assembly.
Claims Coverage
The independent claim describes a percussive respiratory apparatus with a diaphragm-actuated pneumatic valve controlling gas delivery to a patient interface, including a divided lumen for separated inhalation and exhalation pathways. The main inventive features are three: a diaphragm that selectively abuts and spaces from a fluidic communication port, a biasing member with an adjustable knob to vary diaphragm force, and a specific gas movement condition that prevents gas exiting the receiving chamber in a diaphragm state while exhaled gas is handled by a second pathway.
Diaphragm-actuated pneumatic valve with selective port sealing
A pneumatic valve assembly with a diaphragm positioned in the housing that moves between a first position and a second position, wherein the diaphragm abuts and closes a first fluidic communication port when in the first position and is spaced from the first fluidic communication port in the second position, and a second fluidic communication port spaced from the first fluidic communication port.
Adjustable knob varying biasing force on the diaphragm
A biasing member positioned on a first side of the diaphragm applying a force on the diaphragm to move the diaphragm from the second position to the first position, and an adjustable knob associated with the biasing member to vary the force applied by the biasing member on the diaphragm.
Gas receiving chamber communicating through first and second ports to patient interface
A gas receiving chamber in fluidic communication with the first fluidic communication port and a patient interface in fluid communication with the second fluidic communication port, with the patient interface including a divided lumen having at least a first pathway adapted to provide an inhalation fluid and at least a second pathway adapted to channel exhalation fluid away from a patient.
Diaphragm-state gas movement configuration
When the diaphragm moves from the first position gas within the gas receiving chamber moves through the first and second fluidic communication ports to the patient interface through at least the first pathway, when the diaphragm is in the first position no gas exits the receiving chamber, and at least the second pathway is configured to receive gas exhaled from a patient.
Overall claim coverage is centered on a diaphragm-actuated pneumatic valve that controls gas flow to a divided-lumen patient interface, with an adjustable knob varying the biasing force and a specific diaphragm-state gas movement configuration that enables inhalation flow while preventing gas exit from the receiving chamber in the first diaphragm position and routes exhaled gas to the second pathway.
Stated Advantages
Documented Applications
No documented applications found
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