Patent ID: 11951252
Assignee: TRUDELL MEDICAL INTERNATIONAL INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
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.