Oscillating positive expiratory pressure device
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.
1. A respiratory treatment device comprising:
a housing enclosing at least one chamber;
a chamber outlet configured to permit air in the housing to exit the housing;
a chamber inlet configured to permit air outside the housing to enter the housing;
a flow path defined between the chamber inlet and the chamber outlet;
a restrictor member positioned in the flow path, the restrictor member being configured to move in response to the flow of air along the flow path 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; and,
a one-way pressure threshold valve associated with one of the chamber inlet or the chamber outlet, the one-way pressure threshold valve being configured to close one of the chamber inlet or the chamber outlet until a threshold pressure is obtained;
wherein the flow of air along the flow path is prevented while the one-way pressure threshold valve remains closed, and the restrictor member does not move between the closed position and the open position; and,
wherein the flow of air along the flow path is permitted after the one-way pressure threshold valve opens, and the restrictor member moves between the closed position and the open position in response to the flow of air along the flow bath.
2. The respiratory treatment device of claim 1 , further configured to provide oscillating pressure therapy in series with pressure-threshold therapy.
3. The respiratory treatment device of claim 1 , wherein an exhalation flow path is defined between the chamber inlet and the chamber outlet, the one-way pressure threshold valve is associated with the chamber outlet, and the one-way pressure threshold valve is configured to close the chamber outlet until a threshold exhalation pressure is obtained.
4. The respiratory treatment device of claim 3 , further comprising a vane in fluid communication with the exhalation flow path, the vane being operatively connected to the restrictor member and configured to reciprocate between a first position and a second position in response to a flow of air along the exhalation flow path.
5. The respiratory treatment device of claim 4 , wherein air traversing the exhalation flow path passes the restrictor member first, followed by the vane, followed by the one-way pressure threshold valve.
6. The respiratory treatment device of claim 1 , wherein all air that enters the housing through the chamber inlet exits the housing through the chamber outlet.
7. The respiratory treatment device of claim 1 , wherein air traversing the flow path passes through the one-way pressure threshold valve once a threshold pressure is obtained.
8. The respiratory treatment device of claim 1 , wherein a back pressure is transmitted to a user exhaling into or inhaling from the housing while the one-way pressure threshold valve remains closed.
9. A respiratory treatment device comprising:
a housing enclosing at least one chamber;
a chamber outlet configured to permit air in the housing to exit the housing;
a chamber inlet configured to permit air outside the housing to enter the housing;
a flow path defined between the chamber inlet and the chamber outlet;
a restrictor member positioned in the flow path, the restrictor member being 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, the vane being operatively connected to the restrictor member and configured to reciprocate between a first position and a second position in response to a flow of air along the flow path; and,
a one-way valve associated with one of the chamber inlet or the chamber outlet, the one-way valve being configured to close one of the chamber inlet or the chamber outlet until a threshold pressure is obtained;
wherein air traversing the flow path passes through the one-way valve once a threshold pressure is obtained.
10. The respiratory treatment device of claim 9 , further configured to provide oscillating pressure therapy in series with pressure-threshold therapy.
11. The respiratory treatment device of claim 9 , wherein all air that enters the housing through the chamber inlet exits the housing through the chamber outlet.
12. The respiratory treatment device of claim 9 , wherein an exhalation flow path is defined between the chamber inlet and the chamber outlet, and wherein air traversing the exhalation flow path passes the restrictor member first, followed by the vane, followed by the one-way valve.
13. The respiratory treatment device of claim 9 , wherein an inhalation flow path is defined between the chamber inlet and the chamber outlet, and wherein air traversing the inhalation flow path passes the one-way valve first, followed by the restrictor member, followed by the vane.
14. A respiratory treatment device comprising:
a housing enclosing at least one chamber;
a chamber outlet configured to permit air in the housing to exit the housing;
a chamber inlet configured to permit air outside the housing to enter the housing;
a flow path defined between the chamber inlet and the chamber outlet;
a restrictor member positioned in the flow path, the restrictor member being configured to move in response to the flow of air along the flow path 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 one-way valve associated with one of the chamber inlet or the chamber outlet, the one-way valve being configured to close one of the chamber inlet or the chamber outlet until a threshold pressure is obtained; and,
wherein an inhalation flow path is defined between the chamber inlet and the chamber outlet, the one-way valve is associated with the chamber inlet, and the one-way valve is configured to close the chamber inlet until a threshold inhalation pressure is obtained.
15. The respiratory treatment device of claim 14 , further comprising a vane in fluid communication with the inhalation flow path, the vane being operatively connected to the restrictor member and configured to reciprocate between a first position and a second position in response to a flow of air along the inhalation flow path.
16. The respiratory treatment device of claim 15 , wherein air traversing the inhalation flow path passes the one-way valve first, followed by the restrictor member, followed by the vane.
17. The respiratory treatment device of claim 14 , wherein air traversing the flow path passes through the one-way valve once the threshold inhalation pressure is obtained.
18. The respiratory treatment device of claim 14 , further configured to provide oscillating pressure therapy in series with pressure-threshold therapy.
19. The respiratory treatment device of claim 14 , wherein all air that enters the housing through the chamber inlet exits the housing through the chamber outlet.