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US 7,699,054 B2Granted
Positive expiratory pressure device
AssigneeSmiths Medical ASD, Inc.
InventorsRichard K. Pelerossi, Gregory S. King, Jennifer M. Foran, Lawrence A. Weinstein, Fredrick M. Richards, Christopher T. Zirps, Robert H. Elden
Life of this patent
Estimating the term…
Abstract
A multi-use, hand held, single patient oscillatory positive expiratory pressure respiratory therapy device which is easily assembled and disassembled for cleaning, and which is not position dependent during therapy, but operable through a wide range of device orientation.
Claims6
An oscillatory positive expiratory pressure therapy device, comprising:
- an air-flow tube having a path of air flow movement from an inlet opening for receiving expiratory air passed thereto by a user receiving respiratory therapy or care, through an outlet opening for discharging the expiratory air passed through said inlet opening;
- said air-flow tube including expiratory air responsive closure means positioned in said path of air flow movement and actuable between an open position and a closed position in response to the pressure of expiratory air passed thereto;
- said expiratory air responsive closure means including a normally closed non-linear discharge outlet which is opened in response to the presence of a predetermined pressure of expiratory air being passed in said path of air flow movement, and which closes in response to a predetermined rate of air pressure decrease through said non-linear discharge opening;
- and
- wherein said expiratory air responsive closure means positioned in said path of air flow movement and actuable between an open position and a closed position in response to the pressure of expiratory air passed thereto comprises an oscillatory rocker assembly including a rocker portion having a cone-shaped air-flow closure member pivotally supported on a rocker support portion to engage a tapered bell-shaped air-discharge outlet to form said non-linear air discharge outlet.
2 more elements
An oscillatory positive expiratory pressure therapy device, comprising:
- an air-flow tube having a path of air flow movement from an inlet opening for receiving expiratory air passed thereto by a user receiving respiratory therapy or care, through an outlet opening for discharging the expiratory air passed through said inlet opening;
- said air-flow tube including expiratory air responsive closure means positioned in said path of air flow movement and actuable between an open position and a closed position in response to the pressure of expiratory air passed thereto;
- said expiratory air responsive closure means including a normally closed tapered trumpet-shaped air-flow discharge outlet which is opened in response to the presence of a predetermined pressure of expiratory air being passed in said path of air flow movement, and which closes in response to a predetermined rate of air pressure decrease through said discharge opening;
- and
- said expiratory air responsive closure means including a cone-shaped air-flow closure member pivotally movable in response to expiratory air pressure between a closed position into engagement with said tapered trumpet-shaped air-flow discharge outlet blocking the flow of expiratory air in said path of air flow movement and an open position permitting the flow of expiratory air in said path of air flow movement thereby forming a non-linear discharge outlet.
2 more elements
Dependencies are inferred from the claim text.