US Patent No: 6,253,764

Number of patents in Portfolio can not be more than 2000

Control of delivery pressure in CPAP treatment or assisted respiration

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Abstract

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A pressure control apparatus (10) for CPAP treatment or assisted respiration. The apparatus (10) includes an inlet chamber (20) for connection to a primary supply of air or other breathable gas at a pressure at or above a maximum treatment pressure, an outlet chamber (30) for communication with a mask (14) or the like, a diaphragm (32) for communication with a portion of the outlet chamber (30), means (22) to provide a predetermined force to the diaphragm (32), a first valve means (36) operable to open a flow path between the outlet chamber (30) and the inlet chamber (20) in response to deflection of the diaphragm (32) in a first direction and a second valve means (40) operable to provide an exhaust path from the outlet chamber (30) to atmosphere in response to deflection of the diaphragm (32) in a second direction opposite to the first direction. When the pressure of gas in the outlet chamber (30) produces a force on the diaphragm (32) below the predetermined force the force differential on the diaphragm (32) causes it to deflect in the first direction and cause the first valve means (36) to open and to cause an equilibrating flow of gas from the inlet chamber (20). When the pressure of gas in the outlet chamber (30) produces a force on the diaphragm (32) above the predetermined force the force differential on the diaphragm (32) causes it to deflect in the second direction and cause the second valve means (40) to open.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
RESMED LIMITEDBELLA VISTA NEW SOUTH WALES789

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Calluaud, Michel Hunter's Hill, AU 15 525

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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Other [Check patent profile for assignment information] (31)
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Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INVACARE CORPORATION (6)
6,990,980 Carbon dioxide-based Bi-level CPAP control 26 2001
7,152,598 System and method for providing a breathing gas 35 2003
7,621,270 System and method for providing a breathing gas 4 2005
8,640,701 Carbon dioxide-based bi-level CPAP control 0 2005
8,261,742 Method and apparatus for adjusting desired pressure in positive airway pressure devices 1 2008
8,066,004 System and method for providing a breathing gas 10 2009
 
RESMED LIMITED (6)
6,526,974 Pressure control in CPAP treatment or assisted respiration 12 2000
6,745,770 Flow diverter for controlling the pressure and flow rate in a CPAP device 45 2002
6,895,964 Flow diverter for controlling the pressure and flow rate in a CPAP device 28 2004
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7,527,055 Flow diverter for controlling the pressure and flow rate in CPAP device 0 2006
7,694,679 Flow diverter for controlling the pressure and flow rate in CPAP device 0 2008
 
EMERGENT RESPIRATORY LLC (2)
7,721,735 Portable gas powered positive pressure breathing apparatus and method 9 2006
8,365,728 Portable gas powered positive pressure breathing apparatus and method 0 2010
 
RIC INVESTMENTS, LLC. (2)
7,793,660 Method of treating obstructive sleep apnea 7 2005
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3M INNOVATIVE PROPERTIES COMPANY (1)
6,666,209 Method and system of calibrating air flow in a respirator system 20 2001
 
ACOBA, LLC (1)
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FSP INSTRUMENTS, LLC (1)
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SENSORMEDICS CORPORATION (1)
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SIESTAMED, TECHNOLOGIES (1)
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