HIGH FREQUENCY OSCILLATION RESPIRATORY THERAPY
First Claim
1. A respiratory therapy device comprising:
- a housing defining a primary passageway having a patient interface side;
a flow diverter structure maintained by the housing in fluid communication with the primary passageway opposite the patient interface side, wherein the flow diverter structure is characterized by the absence of a venturi tube;
a high frequency pressure port maintained by the housing and configured for fluid connection to a source of oscillatory gas flow, the high frequency pressure port being fluidly associated with the flow diverter structure; and
an entrainment port maintained by the housing and openable to ambient air, the entrainment port being fluidly associated with the flow diverter structure;
wherein the device is configured such that flow characteristics of gas flow from an external source are altered upon interacting with the flow diverter structure to create a pressure drop for drawing in ambient air through the entrainment port in delivering a percussive pressure therapy to the patient interface side of the primary passageway.
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0 Petitions
Accused Products
Abstract
A respiratory therapy device including a housing, a flow diverter structure, a high frequency pressure port (HF port), and an entrainment port. The housing defines a primary passageway having a patient interface side. The flow diverter structure is in fluid communication with the primary passageway and is characterized by the absence of a venturi tube. The HF port is configured for fluid connection to a source of oscillatory gas flow, and is fluidly associated with the flow diverter structure. The entrainment port is openable to ambient air, and is fluidly associated with the flow diverter structure. With this construction, the device is configured such that flow characteristics of gas flow from an external source are altered upon interacting with the flow diverter structure to create a pressure drop for drawing in ambient air through the entrainment port in delivering a percussive pressure therapy to the patient side.
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Citations
23 Claims
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1. A respiratory therapy device comprising:
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a housing defining a primary passageway having a patient interface side; a flow diverter structure maintained by the housing in fluid communication with the primary passageway opposite the patient interface side, wherein the flow diverter structure is characterized by the absence of a venturi tube; a high frequency pressure port maintained by the housing and configured for fluid connection to a source of oscillatory gas flow, the high frequency pressure port being fluidly associated with the flow diverter structure; and an entrainment port maintained by the housing and openable to ambient air, the entrainment port being fluidly associated with the flow diverter structure; wherein the device is configured such that flow characteristics of gas flow from an external source are altered upon interacting with the flow diverter structure to create a pressure drop for drawing in ambient air through the entrainment port in delivering a percussive pressure therapy to the patient interface side of the primary passageway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A respiratory therapy system comprising:
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a respiratory therapy device including; a housing defining a primary passageway having a patient interface side, a flow diverter structure maintained by the housing in fluid communication with the primary passageway opposite the patient interface side, wherein the flow diverter structure is characterized by the absence of a venturi tube, a high frequency pressure port maintained by the housing and fluidly associated with the flow diverter structure, an entrainment port maintained by a housing and openable to ambient air, the entrainment port being fluidly associated with the flow diverter structure; and a source of oscillatory gas flow; wherein the source of oscillatory gas flow is fluidly connected to the high frequency pressure port; and further wherein the device is configured such that flow characteristics of gas flow from an external source are altered upon interacting with the flow diverter structure to create a pressure drop for drawing in ambient air through the entrainment port in delivering a percussive pressure therapy to the patient interface side of the primary passageway. - View Dependent Claims (19)
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20. A respiratory therapy device comprising:
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a housing defining a primary passageway having a patient interface side; a positive pressure port maintained by the housing and configured for fluid connection to a source of positive pressure gas flow; a flow diverter structure including an obstruction body movably maintained within the housing fluidly between the continuous positive pressure port and the primary passageway; a high frequency pressure port maintained by the housing and fluidly connected to the flow diverter structure, wherein the high frequency pressure port is configured for fluid connection to a source of oscillatory gas flow such that a pressure pulse delivered to the high frequency pressure port causes movement of the obstruction body; and an entrainment port maintained by the housing and openable to ambient air, the entrainment port being fluidly associated with the flow diverter structure; wherein the device is configured such that flow characteristics of gas flow from the positive pressure port are selectively altered upon interface with the obstruction body to deliver a percussive pressure therapy to the patient interface side of the primary passageway. - View Dependent Claims (21, 22, 23)
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Specification