1
James W Biondi, Douglas M Johnston, Gerhardt P Schroeder, Donald D Gilmore, Robert Reynolds: Ventilator control system and method. Cardiopulmonary Corporation, Testa Hurwitz & Thibeault, December 12, 2000: US06158432 (167 worldwide citation)

The invention features an exhalation assist device for adjusting the airway resistance in an exhalation circuit of a medical ventilator. The device includes a set of pressure, airflow and airway sensors, a controlling processor, a user interface, and a ventilatory unit in communication with a medica ...


2
Paul L Woodring, Gardner J Kimm, Robert L Stephenson, David R Rogers, Donald J Novkov, Rebecca A Mabry, Steve Harrington: Medical ventilator. Respironics, Gerald R Boss, Ryan A Schneider, Troutman Sanders, April 8, 2003: US06543449 (167 worldwide citation)

A ventilatory system which may be operated in an invasive and a non-invasive mode is provided utilizing a graphical user interface for presenting only those controlled parameters utilized for that specific mode of operation. Volume and pressure ventilatory support parameters are included for invasiv ...


3
Don Gilmore, Douglas Johnston, Gary Schroeder: Ventilator control system and method. Cardiopulmonary Corporation, Testa Hurwitz & Thibeault, August 3, 1999: US05931160 (156 worldwide citation)

A ventilator control system controls a ventilator pneumatic system in a medical ventilator. The ventilator control system includes a user interface, a memory and a processor. The user interface receives input values from a user for setting one or more breath parameters within a set of breath paramet ...


4
Michael Joseph Banner, Paul Bradford Blanch, Johannes H van Oostrom, Richard Joel Melker: Method and apparatus for controlling a medical ventilator. University of Florida, Needle & Rosenberg P C, May 21, 2002: US06390091 (146 worldwide citation)

An open- or closed-loop method and corresponding medical ventilator for providing breathing gas to a patient such that the patient exerts a desired work of breathing during pressure support ventilation, and such that the work of breathing of the patient is monitored and the pressure and/or flow rate ...


5
Mehdi M Jafari, Gardner J Kimm, Karrie McGuigan: Medical ventilator triggering and cycling method and mechanism. Respironics, Michael W Haas, September 30, 2003: US06626175 (134 worldwide citation)

A medical ventilator system and method that triggers, cycles, or both based on patient effort, which is determined from cross-correlating patient flow and patient pressure. The medical ventilator is also controlled such that sensitivity to a patient initiated trigger increases as the expiratory phas ...


6
James W Biondi, Douglas M Johnson, Donald D Gilmore, Robert Reynolds: Ventilator control system and method. Cardiopulmonary Corporation, Testa Hurwitz & Thibeault, July 1, 2003: US06584973 (130 worldwide citation)

The invention features an exhalation assist device for adjusting the airway resistance in an exhalation circuit of a medical ventilator. The device includes a set of pressure, airflow and airway sensors, a controlling processor, a user interface, and a ventilatory unit in communication with a medica ...


7
Kun Li: Gas flow control method in a blower based ventilation system. Nellcor Puritan Bennett, Baker Botts L, February 10, 2009: US07487773 (124 worldwide citation)

The invention is directed to a system and method for controlling the flow of gas from a medical ventilator into a patient's lungs. The control system provides for a non-linear feedforward controller to correct for disturbances caused by back pressure at the outlet of the blower of the medical ventil ...


8
Douglas F DeVries, Arie Cohen: Medical ventilator system. Bear Medical Systems, Howard J Klein, Gabor L Szekeres, July 9, 1985: US04527557 (118 worldwide citation)

A volume ventilator is disclosed which has a balloon valve type exhalation valve for permitting release of gases to the ambient environment during the exhalation period of artificial ventilation or spontaneous breathing, or when there is excess proximal pressure in the ventilator system. A pressure ...


9
Thomas P Westfall, Alberto Ruiz Vela, Anthony J Caterina, Clyde R Visser: Flow control system for medical ventilator. Bear Medical Systems, Klein & Szekeres, July 26, 1994: US05331995 (115 worldwide citation)

A system including the method employed, for controlling the flow of a pressurized gas through a variable orifice flow control valve in a pressurized gas conduit system, such as a ventilator, in response to either a desired flow rate/volume input signal, a desired pressure signal or both. With respec ...


10
Frederick A Stawitcke, William J Mordan, Holly B Jimison, Robert Piziali, Allen K Ream: Medical ventilator device parametrically controlled for patient ventilation. Hewlett Packard Company, Edward Y Wong, May 15, 1984: US04448192 (113 worldwide citation)

A ventilator which accommodates to a patient's efforts in breathing and to his change in respiratory requirements is provided by a system with a novel control law. The novel control law determines a target ideal pressure-volume wave-form which characterizes the patient's respiratory requirements; th ...