1
Marcel D Jaffre, Zachary D Paul, Winslow K Duff, Michael Bobeck, Lance Busch: Exhaust port assembly for a pressure support system. Respironics, Michael W Haas, February 8, 2005: US06851425 (181 worldwide citation)

An exhaust port assembly comprising a conduit carries a flow of gas. A vent assembly having a fixed exhaust area is provided on the conduit for venting a flow of exhaust gas from within the conduit to ambient atmosphere. The vent assembly is configured so as to minimize noise associated with the flo ...


2
Kevin Bowen, Daniel Jonczak, Gregory Yurko, Douglas M Mechlenburg, Winslow K Duff, Mark D Angelo: Method and apparatus for monitoring and controlling a medical device. RIC Investments, Michael W Haas, June 5, 2007: US07225809 (98 worldwide citation)

A medical device, such as pressure support system, and a method of communicating with such a device using an information storage device. The information storage device, in one embodiment, is adapted to be provided in a slot in the medical device so that information for controlling the operating of t ...


3
Greg Matthews, Michael T Kane, Winslow K Duff, Rochelle Eisert, Daniel Martin: Auto-titration pressure support system and method of using same. RIC Investments, Michael W Haas, January 30, 2007: US07168429 (79 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 ...


4
Peter D Hill, Michael H Kissel, John Frank, Michael T Kane, Susan L Bann, Winslow K Duff: Average volume ventilation. RIC Investments, Michael W Haas, March 14, 2006: US07011091 (61 worldwide citation)

A ventilator supplies a plurality of volumes of fluid to a patient during a like plurality of inhalations by the patient. Each volume of fluid is supplied at an inspiratory positive airway pressure during a corresponding inhalation by the patient. A volume of fluid received by the patient is determi ...


5
Winslow K Duff, Patrick W Truitt, Douglas W Keeports: Pressure support system with a primary and a secondary gas flow and a method of using same. Respironics, Michael W Haas, August 7, 2001: US06269811 (56 worldwide citation)

A pressure support system that includes a pressure generating system employing a pressure generator that provides a primary flow of gas to a patient and a supplemental gas system providing a supplemental flow of gas to the patient. A selectively acutable valve associated with the supplemental gas sy ...


6
Greg Matthews, Winslow K Duff, Daniel Martin, Uday S Shankar, Heather Ressler: Auto-titration bi-level pressure support system and method of using same. RIC Investments, Michael W Haas, May 10, 2011: US07938114 (51 worldwide citation)

A bi-level pressure support system and method of treating disordered breathing that optimizes the pressure delivered to the patient during inspiration and expiration to treat the disordered breathing while minimizing the delivered pressure for patient comfort. The pressure generating system generate ...


7
Patrick W Truitt, Winslow K Duff: Monitoring fluid flow in a pressure support system. Respironics, Michael W Haas, November 11, 2003: US06644311 (44 worldwide citation)

The present invention pertains to a pressure support system in which a flow or volume of gas is measured without using a dedicated flow element used in a conventional flow meter. Instead, the present invention provides a tortuous gas flow path in which a pressure differential is created between two ...


8
William A Truschel, Winslow K Duff, Michael T Kane, Andrew L Shissler: Pressure support system and method. RIC Investments, Michael W Haas, May 16, 2006: US07044129 (39 worldwide citation)

A pressure generating system and method for generating a flow of fluid at a pressure above atmospheric pressure. The system includes a pressure generator and a pressure regulator downstream of the pressure generator. The system monitors a characteristic associated with the pressure regulator, the fl ...


9
William D Marriott, Winslow K Duff, Francis X McDonald: Pneumatic operated valve stroke timing. Combustion Engineering, L James Ristas, John H Mulholland, July 19, 1994: US05329956 (36 worldwide citation)

A non-intrusive method for timing the full operational motion of a valve plug (26) in an electrically actuated, pneumatically operated valve (10). An actuation signal is sent to the valve actuator (54). A coil of wire (68) around the valve actuator solenoid (56), an accelerometer (70) on the solenoi ...


10
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 ...