A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 16/00 (2006.01) A61M 16/08 (2006.01) A61M 16/20 (2006.01)
Patent
CA 2157636
Patient airway baseline pressure levels are controlled in a ventilator having a pneumatically controlled exhalation valve without an external supply of pilot pressure, by supplying an internal source of controllable pilot pressure for operating the exhalation valve. The pressure of pressurized air supplied by an internal pump can be electrically controlled by pulse width modulation of a variable pulse duration signal. A second source of pressurized air for pilot pressure is provided, and in one embodiment is a reservoir provided for receiving pressurized air from the pump and from the exhalation circuit. A valve is connected to the pump means and the reservoir for receiving pressurized air from the pump in a first position, and for receiving pressurized air from the reservoir in a second position. When the valve means is in the second position, pressurized air is delivered at a pressure which is the greater of the pressurized air supplied by the pump means or the gas flow from the exhalation circuit.
Farnham Floyd R. III
O'mahony John J.
Puritan-Bennett Corporation
Smart & Biggar
LandOfFree
Method and apparatus for control of lung ventilator... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for control of lung ventilator..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for control of lung ventilator... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1845370