51
Ho Peter Chi Fai, Andrews Derrick: Cushion for patient interface. Ric Investments, GASTINEAU Cheryl, June 29, 2006: WO/2006/069345 (31 worldwide citation)

A respiratory mask (30) is provided having an outer shell (34) coupled to a cushion (32) for the delivery of a gas to a user. The cushion (32) of the respiratory mask (30) has a pleat (82) and varied wall thicknesses about the device in order to provide varying degrees of flexibility and support abo ...


52
Patrick W Truitt, Richard J Lordo, Joseph J Gesner: Pressure support system and method and a pressure control valve for use in such a system and method. RIC Investments, Michael W Haas, November 14, 2006: US07134434 (30 worldwide citation)

A pressure support system having enhanced noise reduction and a valve assembly for use in pressure support system. The pressure support system includes a pressure generator having an inlet and an outlet. A first conduit defining a tortuous path is coupled between a gas source and the inlet of the pr ...


53
Patrick W Truitt, William A Truschel, Bernie F Hete, Michael Bobeck, Michael W Haas: Apparatus and method for providing high frequency variable pressure to a patient. RIC Investments, Richard J Coldren, Michael W Haas, Timothy A Nathan, January 23, 2007: US07165547 (30 worldwide citation)

A high frequency pressure oscillation device that selective restricts the flow of breathing gas to or from a patient to produce pressure spikes in the patient's airway that facilitate clearing secretions from the patient's airway. The device includes a patient circuit that defines a closed path betw ...


54
Peter Chi Fai Ho, Lance Busch: Cushion inside a cushion patient interface. RIC Investments, Michael W Haas, October 30, 2007: US07287528 (28 worldwide citation)

A patient interface device including a cushion assembly having a cushion-in-a-cushion arrangement and a system for supplying a flow of gas to a patient using such an interface device. The patient interface includes a mask shell having a patient side and an outer side opposite the patient side adapte ...


55
William A Truschel, Patrick W Truitt, Winslow K Duff: Measurement of a fluid parameter in a pressure support system. RIC Investments, Michael W Haas, November 29, 2005: US06968842 (28 worldwide citation)

A pressure support system has a motor, a switching element that supplies power to motor windings, and a blower coupled to the motor. Rotation of the blower elevates a pressure of fluid in a patient circuit coupled to an outlet of the blower. A rotational speed controller maintains the motor at a set ...


56
Mark C Estes, John Fiore, Douglas M Mechlenburg, Heather Ressler, Jeff Kepler: Method and apparatus for providing positive airway pressure to a patient. RIC Investments, Michael W Haas, October 12, 2010: US07810496 (26 worldwide citation)

A system including methods and apparatus for treatment of a medical disorder such as obstructive sleep apnea or congestive heart failure. The system involves applying a gain to flow rate of pressurized gas delivered to a patient during inspiratory and/or expiratory phases of a respiratory cycle to d ...


57
Jerome Matula Jr, Jason P Eaton, Steven C Stegman, Luke Stonis, Greg Merz, Keith Grider, Nic Davirro, Chris Von Dohen, Justin Rothermel: Patient interface device. Ric Investments, Michael W Haas, March 8, 2011: US07900628 (26 worldwide citation)

A patient interface device that includes a support member sized and configured to span at least a portion of a patient's face while remaining below the patient's eyes responsive to the patient interface device being donned by such a patient. A sealing assembly is attached to the support member via a ...


58
Greg Matthews, Michael T Kane, Winslow K Duff, Rochelle Siirola, Daniel Martin, Heather Ressler, Uday Shankar: Auto-titration pressure support system and method of using same. RIC Investments, Michael W Haas, November 9, 2010: US07827988 (25 worldwide citation)

A pressure support system and method of treating disordered breathing that optimizes the pressure delivered to the patient to treat the disordered breathing while minimizing the delivered pressure for patient comfort. The controller in the pressure support system operates as a set of prioritized con ...


59
Ben Haberland, Uday S Shankar: Apnea/hypopnea detection system and method. RIC Investments, Michael W Haas, October 10, 2006: US07118536 (25 worldwide citation)

An apnea/hypopnea detection system and method that monitors a patient's respiratory flow, determines (a) a long term RMS energy based on the flow, (b) a long term threshold determined based on the long term RMS energy, and (c) a short term RMS energy based on the flow. Determining whether the patien ...


60
Kai Kuck, Joseph Orr, Lara Brewer: Noninvasive effective lung volume estimation. RIC Investments, April 20, 2010: US07699788 (25 worldwide citation)

Methods for noninvasively measuring, or estimating, functional residual capacity or effective lung volume include obtaining carbon dioxide and flow measurements at or near the mouth of a subject. Such measurements are obtained during baseline breathing and during and shortly after inducement of a ch ...