Huff cough simulation device
AssigneeTrudell Medical International
InventorsStephen Costella, Robert Morton, James Schmidt
Life of this patent
Estimating the term…
Abstract
A respiratory treatment device having an inlet configured to receive exhaled air into the device, an outlet configured to permit exhaled air to exit the device, a valve moveable in response to a threshold exhalation pressure at the inlet between a closed position where the flow of air from the inlet to the outlet is restricted, and an open exhalation position where the flow of air from the inlet to the outlet is less restricted, and a valve brace configured to support the valve, wherein a position of the valve brace relative to the valve is selectively adjustable to increase or decrease the threshold exhalation pressure.
Claims20
A respiratory treatment device comprising:
- an inlet configured to permit air into the device;
- an outlet configured to permit air to exit the device;
- a valve moveable in response to a flow of air between the inlet and the outlet from a closed position where the flow of air between the inlet and the outlet is restricted, to an open position where the flow of air between the inlet and the outlet is less restricted;
- and,
- a spring proximate the valve, the spring moveable to return the valve to the closed position, after the valve is moved to the open position;
- wherein the valve is configured to remain in the open position after the flow of air from the inlet to the outlet concludes.
A respiratory treatment device comprising:
- an inlet configured to permit air into the device;
- an outlet configured to permit air to exit the device;
- a flap valve moveable in response to a flow of air between the inlet and the outlet from a closed position where the flow of air between the inlet and the outlet is restricted, to an open position where the flow of air between the inlet and the outlet is less restricted;
- and,
- a spring moveable to return the valve to the closed position, after the valve is moved to the open position;
- wherein when the valve is in the closed position, the spring does not bias the valve.
A respiratory treatment device comprising:
- an inlet configured to permit air into the device;
- an outlet configured to permit air to exit the device;
- a valve moveable in response to a flow of air between the inlet and the outlet from a closed position where the flow of air between the inlet and the outlet is restricted, to an open position where the flow of air between the inlet and the outlet is less restricted;
- and,
- a spring moveable by application of an external force from a user of the respiratory treatment device to return the valve to the closed position, after the valve is moved to the open position;
- wherein the spring is molded-in with a portion of a housing of the device.
Dependencies are inferred from the claim text.