Edmond Y Chu

6766800, Jul 27, 2004

Aug 30, 2002

10/231859

Edmond Chu - San Diego CA
Tim Quinn - Carlsbad CA
Larry Murdock - Alta Loma CA
Hung Tran - Yorba Linda CA

Sensormedics Corporation - Yorba Linda CA

A61M 1600

12820524, 12820525, 12820712, 12820628, 12820621, 12820418, 12820423, 1376012

A valve for use in continuous positive airway pressure (CPAP) devices includes a valve body that is disposed at or between the patient mask and the source of positive airway pressure. The valve body includes first and second exhaust paths for exhausting gas from the mask. A floating valve seat is disposed in the valve body and is moveable between first and second positions. A moveable spring-biased piston is releasably engaged with the floating valve seat. When the floating valve seat is in the first position, the moveable spring-biased piston is disengaged from the valve seat and gas travels out the first exhaust flowpath. When the floating valve seat is in the second position, the moveable spring-biased piston is engaged with the valve seat and gas travels out the second exhaust flowpath. The valve provides substantially constant positive airway pressure to the patient at pressures above the threshold pressure level of the valve. When the pressure drops below the threshold value, the valve opens a secondary flowpath in the valve.

20040084048, May 6, 2004

May 12, 2003

10/437409

Alex Stenzler - Long Beach CA, US
Tim Quinn - Carlsbad CA, US
Edmond Chu - San Diego CA, US
Hiroshi Sasano - Nagoya, JP
Ron Somogyi - Toronto, CA
George Volgyesi - Toronto, CA
Steve Iscoe - Kingston, CA
David Preiss - Thornhill, CA
Eltan Prisman - Thornhill, CA
Alex Vesely - Toronto, CA
Joseph Fisher - Thornhill, CA

A62B018/08

128/206120, 128/206150, 128/206130, 128/205270

A method and device for effective delivery of a gas such as oxygen for inhalation are described that sequentially dilute room air to the flow of gas during a respiratory cycle. A mask assembly is described that comprises an inspiratory and expiratory limb each containing a very low resistance one-way valve, and a sequential dilution conduit (leading from the atmosphere to the inspiratory limb) with a one-way valve that has a slightly positive cracking pressure. A sequential dilution valve may also be placed in the sequential dilution conduit. Additionally, to reduce exposure of harmful agents to others that may be in the same room as the patient using the mask, filters may be included in the mask or connected to an exit port. The filter may be used to filter any harmful agents including, but not limited to, infectious agents, anesthetic gas, or toxic or harmful chemicals or gas.

20050011524, Jan 20, 2005

Jul 9, 2004

10/887747

Marguerite Thomlinson - Irvine CA, US
Edmond Chu - San Diego CA, US
Jim Ventress - Tustin CA, US

A62B007/00
A61M015/08

128207180

A nasal interface device for use in the nares of a patient for positive airway pressure applications includes a pair of nasal prongs, each prong having a bore, a first end, a second end, and at least one deformable flap disposed proximate to the first end of each prong. The device further includes a body having a distal portion and a proximal portion forming a chamber, the proximal portion having apertures to receive the second ends of the nasal prongs, the chamber being in communication with the bores of the nasal prongs, and at least one exhalation port disposed within the body. The device includes at least one gas inlet on the distal portion of the body, the at least one gas inlet in communication with the chamber. In one preferred aspect of the invention, the at least one flap is deformable within the nares of a patient thereby creating a substantially airtight seal.

20060258949, Nov 16, 2006

May 10, 2006

11/431905

Norman Thomas - Golden CO, US
Edmond Chu - Erie CO, US

Ferraris Respiratory, Inc. - Louisville CO

A61B 5/08

600538000, 600532000

A pulmonary testing device and method are provided that measure an inspired volume of a selected gas component. In one configuration, the selected gas component is injected into the device in an airway of the device upstream of a gas analyzer. The device has opposing open ends, one for the patient's mouth and the other for inspiration of air.

20100076275, Mar 25, 2010

Jul 24, 2009

12/508830

Edmond Chu - Erie CO, US
Robert Graham Buchanan - Broomfield CO, US
John A. Van Tol - Saratoga WY, US
Eric J. Norgard - Louisville CO, US

A61B 5/00

600300

A system and method for remote health monitoring is described. One embodiment includes a portable health monitoring device comprising a data transfer interface configured to receive a protocol, wherein the protocol comprises branching logic, a display configured to present a user with at least one question from the branching logic, a user interface configured to receive information from the user, a diagnostic device interface configured to communicate with a diagnostic device, a memory configured to store data related to the user, and a processor configured to analyze at least a portion of the data related to the user, wherein the processor is further configured to transmit at least a portion of the data related to the user to a monitoring location via the data transfer interface.

20110021940, Jan 27, 2011

Jul 21, 2009

12/506826

Edmond Chu - Erie CO, US
Rich Rosenthal - Superior CO, US
Larry Murdock - Alta Loma CA, US

A61B 5/08
G09B 23/28

600529, 434262

A system and method for obtaining measurements of a person's pulmonary diagnostic is described. One embodiment includes a method of providing audible signals related to measurement of pulmonary function, the method comprising receiving a pulmonary input through a receiver, transferring the pulmonary input to a sensor, generating an input signal, using the sensor, based on the pulmonary input, and generating a responsive audible signal through a speaker, wherein the responsive audible signal is based on the input signal. The pulmonary input may comprise, for example, an inhalation, exhalation, gas content reading, or other pulmonary input. The responsive audible signal may comprise a verbal audible signal, a tone, or some combination of both. The responsive audible signal could be for instruction and/or encouragement. The method could further include generating audible instruction signals that are not necessarily related to the pulmonary input.

6265750, Jul 24, 2001

Jul 15, 1999

9/353907

Chang-Dong Feng - Long Beach CA
Edmond Y. Chu - San Diego CA

Teledyne Technologies Incorporated - Los Angeles CA

H01L 2714

257414

An electrochemical gas sensor including a substrate defining an opening therethrough, a sensing electrode connected to a first surface of the substrate and adjacent a first end of the opening, a diffusion barrier connected to the sensing electrode, a counter electrode adjacent a second end of the opening, and an electrolyte located in the opening between the sensing electrode and the counter electrode.

47076194, Nov 17, 1987

Feb 13, 1985

6/701079

Edmond Y. Chu - Carlsbad CA
Vance I. Valencia - San Diego CA

Maxwell Laboratories, Inc. - San Diego CA

G11C 1302

307106

A saturable inductor switch. The switch includes a number of spaced cores disposed adjacent one another with each core being made of ferromagnetic material. An insulative layer is disposed about each core and each core has an electrical winding about the insulative layer for that core. Each winding has a first end and a second end and is electrically connected to its respective core intermediate the ends. The windings are connected in series. All the cores have substantially the same size and shape, and all windings have substantially the same number of turns.