RESPIRATORY THERAPY DEVICE
First Claim
1. A device for providing respiratory therapy to a patient during at least a portion of a patient breathing cycle including an inspiratory phase and an expiratory phase, the device comprising:
- a housing including a patient inlet, an exhaust outlet, a first chamber fluidly disposed between the patient inlet and the exhaust outlet, a second chamber adjacent the first chamber, a first pressurized fluid supply inlet fluidly coupled to the first chamber and a second pressurized fluid supply inlet fluidly coupled to the second chamber; and
an interrupter valve assembly associated with the housing and disposed within the second chamber, the interrupter valve assembly including a control port fluidly connecting the patient inlet and the first chamber, and a valve body adapted to selectively obstruct fluid flow through the control port, wherein the interrupter valve assembly further includes a drive shaft carrying the valve body such that with movement of the drive shaft, the valve body selectively covers the control port, and a drive mechanism for moving the drive shaft; and
wherein the device is adapted such that fluid flow from the second pressurized fluid supply inlet to the second chamber drives the drive mechanism.
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Accused Products
Abstract
A respiratory therapy device including a housing and an interrupter valve assembly. The housing is sized for handling by a patient and defines a patient breathing passage extending from a patient end and through which a patient inhales and exhales air. The interrupter valve assembly is carried by the housing and includes a control port, a valve body, and a drive mechanism. Expiratory airflow is released from the patient breathing passage through the control port. The valve body is sized to at least partially obstruct fluid flow through the control port. The drive mechanism moves the valve body relative to the control port in response to the expiratory airflow such that the valve body repeatedly transitions between a position of maximum obstruction and a position of minimum obstruction relative to the control port to create an oscillatory positive expiratory pressure effect.
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Citations
15 Claims
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1. A device for providing respiratory therapy to a patient during at least a portion of a patient breathing cycle including an inspiratory phase and an expiratory phase, the device comprising:
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a housing including a patient inlet, an exhaust outlet, a first chamber fluidly disposed between the patient inlet and the exhaust outlet, a second chamber adjacent the first chamber, a first pressurized fluid supply inlet fluidly coupled to the first chamber and a second pressurized fluid supply inlet fluidly coupled to the second chamber; and an interrupter valve assembly associated with the housing and disposed within the second chamber, the interrupter valve assembly including a control port fluidly connecting the patient inlet and the first chamber, and a valve body adapted to selectively obstruct fluid flow through the control port, wherein the interrupter valve assembly further includes a drive shaft carrying the valve body such that with movement of the drive shaft, the valve body selectively covers the control port, and a drive mechanism for moving the drive shaft; and wherein the device is adapted such that fluid flow from the second pressurized fluid supply inlet to the second chamber drives the drive mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification