1
Mark H Sanders, Ronald J Zdrojkowski: Method and apparatus for maintaining airway patency to treat sleep apnea and other disorders. Respironics, Carothers and Carothers, September 22, 1992: US05148802 (323 worldwide citation)

An improved methodology and apparatus for the treatment of sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient.


2
Ronald J Zdrojkowski, Frank V Blazek, John Raymond Pujol: Flow regulating valve and method. Respironics, J Stewart Brams, November 11, 1997: US05685296 (204 worldwide citation)

A flow regulating system including a valve and a method for maintaining a constant gas flow rate through a patient circuit to ambient exhaust at varying gas pressure by means of differential gas pressure applied to opposed sides of a valve diaphragm.


3
Rudolph J Kranys, Marlin S Heilman, Ronald J Zdrojkowski, George R Swann: Angiographic injector. Medrad, Fleit & Jacobson, February 8, 1977: US04006736 (200 worldwide citation)

An apparatus for injecting fluid, specifically contrast media, into the vascular system of a human being or other animal. The apparatus comprises a head portion and a control unit. The head portion includes the motor and drive components, and carries a removable syringe cartridge containing the flui ...


4
Ronald J Zdrojkowski: Leak compensation method and apparatus for a breathing system. Respironics, J Stewart Brams, May 24, 1994: US05313937 (163 worldwide citation)

An improved methodology and apparatus for the treatment of sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous respiration of the patient.


5
Ronald J Zdrojkowski: Breathing gas delivery method and apparatus. Respironics, J Stewart Brams, May 27, 1997: US05632269 (161 worldwide citation)

An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spon ...


6
Mark H Sanders, Ronald J Zdrojkowski: Breathing gas delivery method and apparatus. Respironics, J Stewart Brams, July 18, 1995: US05433193 (159 worldwide citation)

An improved methodology and apparatus for delivery of breathing gas such as fop the treatment of sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spontaneous re ...


7
Ronald J Zdrojkowski, Mark Estes: Breathing gas delivery method and apparatus. Respironics, J Stewart Brams, September 8, 1998: US05803065 (123 worldwide citation)

An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spon ...


8
Ronald J Zdrojkowski, Mark Estes: Breathing gas delivery method and apparatus. Respironics, Michael W Haas, October 23, 2001: US06305374 (114 worldwide citation)

An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spon ...


9
Ronald J Zdrojkowski, Mark Estes: Breathing gas delivery method and apparatus. Respironics, Michael W Haas, February 29, 2000: US06029664 (106 worldwide citation)

A method of detecting changes in a person's respiration between inspiration and expiration by monitoring of gas flow characteristics.


10
Ronald J Zdrojkowski, Mark H Sanders, Mark Estes: Breathing gas delivery method and apparatus. RIC Investments, Michael W Haas, September 27, 2005: US06948497 (102 worldwide citation)

An improved methodology and systems for delivery of breathing gas such as for the treatment of obstructive sleep apnea through application of alternating high and low level positive airway pressure within the airway of the patient with the high and low airway pressure being coordinated with the spon ...