1
Russell L Trimble, Roger J Dolida, Frederick R Rose, Philip M Metzler: Nasal puff with adjustable sealing means. Puritan Bennett Corporation, Hovey Williams Timmons & Collins, November 8, 1988: US04782832 (430 worldwide citation)

An improved nasal puff assembly is provided which is of particular benefit in the treatment of obstructive sleep apnea and which is characterized by a gas-delivery puff which fits only in the nose of the patient and is therefore of relatively small size and can be comfortably worn. The nasal puff of ...


2
Roger A Gruenke, Russell L Trimble: Inspiratory airway pressure system using constant pressure and measuring flow signals to determine airway patency. Puritan Bennett Corporation, Fulwider Patton Lee & Utecht, August 27, 1996: US05549106 (267 worldwide citation)

An apparatus and method for facilitating the respiration of a patient are disclosed which are particularly useful in treating mixed and obstructive sleep apnea and certain cardiovascular conditions, among others, by increasing nasal air pressure delivered to the patient's respiratory passages just p ...


3
Edwin B Merrick: Artificially induced blood pulse for use with a pulse oximeter. Puritan Bennett Corporation, Fish & Richardson, November 28, 1989: US04883055 (255 worldwide citation)

An artificially induced blood pulse used for measuring oxygen saturation in arterial blood is produced by a cuff, wrapped around a body member having an artery upstream from a testing site, when a squeezing pulse is applied by the cuff to the body member.


4
Gardner J Kimm, Glen N Gee, Paul J Fennema, Warren G Sanborn: System and method for flow triggering of pressure supported ventilation. Puritan Bennett Corporation, Fulwider Patton Lee & Utecht, November 10, 1992: US05161525 (250 worldwide citation)

The system and method for flow triggering pressure supported ventilation include a source of a predetermined, preinspiratory, constant flow of breathing gas to a patient, one or more flow sensors for measuring the rate of gas flow in a flow path communicating with the patient, means for determining ...


5
Roger A Gruenke, Russell L Trimble, Christopher D Lasnier, Steven W Loethen, Jiri G Orlt, James A Snook, Marilyn S Wyble: Inspiratory airway pressure system with admittance determining apparatus and method. Puritan Bennett Corporation, Hovey Williams Timmons & Collins, August 4, 1992: US05134995 (237 worldwide citation)

An apparatus and method for facilitating the respiration of a patient are disclosed which are particularly useful in treating mixed and obstructive sleep apnea and certain cardiovascular conditions, among others, by increasing nasal air pressure delivered to the patient's respiratory passages just p ...


6
Gardner J Kimm, Glen N Gee, Paul J Fennema, Warren G Sanborn: System and method for flow triggering of pressure supported ventilation by comparison of inhalation and exhalation flow rates. Puritan Bennett Corporation, Fulwider Patton Lee & Utecht, August 26, 1997: US05660171 (237 worldwide citation)

The system and method for flow triggering pressure supported ventilation include a source of a predetermined, preinspiratory, constant flow of breathing gas to a patient, one or more flow sensors for measuring the rate of gas flow in a flow path communicating with the patient, means for determining ...


7
James A Snook, Thomas W Nelson, Marilyn S Wyble, Russell L Trimble: Inspiration oxygen saver. Puritan Bennett Corporation, Hovey Williams Timmons & Collins, July 3, 1990: US04938212 (234 worldwide citation)

A reliable, pulse-flow supplemental oxygen apparatus for alleviating respiratory ailments is provided which yields substantial savings in oxygen while giving the patient the physiological equivalent of a prescribed continuous stream of oxygen. The apparatus preferably includes a demand oxygen valve ...


8
Joseph Deighan, Steven L Phillips, Linn D Wanbaugh, Philip M Metzler: Compliance meter for respiratory therapy. Puritan Bennett Corporation, Fulwider Patton Lee & Utecht, May 21, 1996: US05517983 (226 worldwide citation)

A respiratory apparatus (10) operable for delivering a breathable gas to the airway of a patient includes a status monitor (24,26) for determining the status of usage of the unit by the patient and a timer (32) for determining the accumulated time of usage of the unit by the patient.


9
Gary J LaTorraca: Humidifier module for use in a gas humidification assembly. Puritan Bennett Corporation, Fulwider Patton Lee & Utecht, May 1, 1990: US04921642 (224 worldwide citation)

The humidifier module for use in a gas humidification unit has a humidification chamber and a water heating chamber separated by a water vapor permeable, liquid water impermeable membrane. Gas inlet and outlet ports are provided in the humidification chamber, a water inlet port is provided for the w ...


10
Steven L Phillips: Inhalation/exhalation respiratory phase detection circuit. Puritan Bennett Corporation, Fulwider Patton Lee & Utecht, August 8, 1995: US05438980 (205 worldwide citation)

An apparatus (10) for controlling the pressure of a respiratory gas delivered to a patient includes a phase detection circuit (24) for determining the inhalation and exhalation phases of the patient's respiratory cycle. More particularly, a flow signal representative of the respiratory flow is compa ...