Insufflation/exsufflation airway clearance apparatus
First Claim
1. An apparatus comprising:
- a blower having an intake and an exhaust;
a direction valve having an intake port operationally connected to said blower intake, an exhaust port operationally connected to said blower exhaust, an atmosphere port, and a common port;
an oscillator having a connector port and a valve port operationally connected to said valve common port, said oscillator including a chamber between said connector port and said valve port and a rotatable disc within said chamber;
a patient interface coupled to the connector port and in communication with a patient'"'"'s respiratory tract;
a controller controlling operation of said apparatus;
said apparatus having an insufflation mode wherein said controller sets said direction valve such that said exhaust port is operationally connected to said common port and said intake port is operationally connected to said atmosphere port, thereby providing positive pressure at said patient interface for an insufflation;
said apparatus having an exsufflation mode wherein said controller sets said direction valve such that said intake port is operationally connected to said common port and said exhaust port is operationally connected to said atmosphere port, thereby providing negative pressure at said patient interface for an exsufflation; and
said apparatus having a flutter mode wherein said controller rotates said rotatable disc at a settable frequency during exsufflation.
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Accused Products
Abstract
An MIE apparatus has a blower, a direction valve, an oscillator, and a mask hose connector. The blower is connected to the direction valve, which is connected to the oscillator, which is connected to the hose connector. During insufflation, a direction valve connects exhaust of a blower to an oscillator, causing positive pressure at the hose connector. During exsufflation, the direction valve connects the blower intake to the oscillator, causing negative pressure at the hose connector. The oscillator is a butterfly valve with a 360° rotating disc. During insufflation, the disc is fixed to steadily modulate the airflow. During exsufflation, the oscillator is inactive or in flutter mode. When inactive, the disc is fixed to allow maximum air flow. In flutter mode, the disc continuously rotates so that the air flow rapidly alternates between maximum and minimum.
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Citations
20 Claims
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1. An apparatus comprising:
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a blower having an intake and an exhaust; a direction valve having an intake port operationally connected to said blower intake, an exhaust port operationally connected to said blower exhaust, an atmosphere port, and a common port; an oscillator having a connector port and a valve port operationally connected to said valve common port, said oscillator including a chamber between said connector port and said valve port and a rotatable disc within said chamber; a patient interface coupled to the connector port and in communication with a patient'"'"'s respiratory tract; a controller controlling operation of said apparatus; said apparatus having an insufflation mode wherein said controller sets said direction valve such that said exhaust port is operationally connected to said common port and said intake port is operationally connected to said atmosphere port, thereby providing positive pressure at said patient interface for an insufflation; said apparatus having an exsufflation mode wherein said controller sets said direction valve such that said intake port is operationally connected to said common port and said exhaust port is operationally connected to said atmosphere port, thereby providing negative pressure at said patient interface for an exsufflation; and said apparatus having a flutter mode wherein said controller rotates said rotatable disc at a settable frequency during exsufflation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification