Oscillating positive expiratory pressure device
First Claim
1. A respiratory treatment device comprising:
- an inlet configured to receive exhaled air into the device;
an outlet configured to permit air to exit the device;
an opening positioned in an exhalation flow defined between the inlet and the outlet;
a restrictor member configured to rotate relative to the opening between a closed position where the flow of air through the opening is restricted, and an open position where the flow of air through the opening is less restricted; and
,a vane configured to rotate the restrictor member between the closed position and the open position in response to the flow of air between the inlet and the outlet;
wherein the restrictor member and the vane have a combined center of gravity positioned to bias the restrictor member to the closed position during a period of no air flow through the opening.
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Accused Products
Abstract
A respiratory treatment device comprising at least one chamber, a chamber inlet configured to receive air into the at least one chamber, at least one chamber outlet configured to permit air to exit the at least one chamber, and a flow path defined between the chamber inlet and the at least one chamber outlet. A restrictor member positioned in the flow path is moveable between a closed position, where a flow of air along the flow path is restricted, and an open position, where the flow of air along the flow path is less restricted. A vane in fluid communication with the flow path is operatively connected to the restrictor member and is configured to reciprocate between a first position and a second position in response to the flow of air along the flow path.
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Citations
20 Claims
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1. A respiratory treatment device comprising:
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an inlet configured to receive exhaled air into the device; an outlet configured to permit air to exit the device; an opening positioned in an exhalation flow defined between the inlet and the outlet; a restrictor member configured to rotate relative to the opening between a closed position where the flow of air through the opening is restricted, and an open position where the flow of air through the opening is less restricted; and
,a vane configured to rotate the restrictor member between the closed position and the open position in response to the flow of air between the inlet and the outlet; wherein the restrictor member and the vane have a combined center of gravity positioned to bias the restrictor member to the closed position during a period of no air flow through the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A respiratory treatment device comprising:
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an inlet configured to receive exhaled air into the device; an outlet configured to permit air to exit the device; an opening positioned in an exhalation flow path defined between the inlet and the outlet, a restrictor member configured to move relative to the opening between a closed position where the flow of air along the exhalation flow path is restricted, and an open position where the flow of air along the exhalation flow path is less restricted; a vane configured to move the restrictor member between the closed position and the open position in response to the flow of air along the exhalation flow path; and
,an orifice positioned adjacent the vane, the exhalation flow path passing through the orifice, the orifice having a cross sectional area less than a cross sectional area of the inlet; wherein the restrictor member and the vane have a combined center of gravity positioned to bias the restrictor member to the closed position during a period of no air flow along the exhalation flow path. - View Dependent Claims (10, 11, 12, 13)
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14. A respiratory treatment device comprising:
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an inlet configured to receive exhaled air into the device; an outlet configured to permit air to exit the device; an opening positioned in an exhalation flow path defined between the inlet and the outlet, a restrictor member configured to move relative to the opening between a closed position where a flow of air along the exhalation flow path is restricted, and an open position where the flow of air along the exhalation flow path is less restricted; a vane configured to move the restrictor member between the closed position and the open position in response to the flow of air along the exhalation flow path, the vane having an axis of rotation; and
,an orifice positioned adjacent the vane, the exhalation flow path passing through the orifice, wherein a direction of the flow of air through the orifice is aligned with the axis of rotation of the vane; wherein the restrictor member and the vane have a combined center of gravity positioned to bias the restrictor member to the closed position during a period of no air flow along the exhalation flow path. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification