A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 16/00 (2006.01) B62B 9/00 (2006.01) A61M 16/06 (2006.01)
Patent
CA 2109017
METHOD AND APPARATUS FOR THE INTERMITTENT DELIVERY OF OXYGEN THERAPY TO A PERSON ABSTRACT An apparatus for supplying measured doses of respirating gas to a person in synchronization with the respiratory cycle of said person comprising: (a) step control relay means having a connection adapted for con- necting to a source of respirating gas, said step control relay means being adapted to be controlled by a microcon- troller means; (b) gas flow sensor means adapted for determining the onset or expiry of an inspiration phase of the person, said gas flow sensor means being connected to a respiratory gas outlet adapted for connection to the respiratory tract of said person, said gas flow sensor means being connected to said step control relay means to enable respiratory gas upon command from the microcontrol- ler to be transferred from said step control relay means to said flow sensor means, and ultimately to the person, said flow sensor means being adapted to deliver transmit elec- tric signals to the microcontroller in synchronization with the onset and termination of the inspiration phase by the person; (c) electrical power supply means adapted for connection to said microcontroller and upon command from the microcontroller, delivering an electrical current to said step control relay means; (d) a microcontroller means adapted to receive electric signals from said gas flow sensor means, and to deliver programmed electric signals to said step control relay means; (e) a liquid display crystal means adapted to display programmed data from said micro- computer controller means, and data received from said gas flow sensor means; and (f) keyboard switching means con- nected to said microcontroller unit means for enabling manual signals to be conveyed to said microcontroller means and displayed on said liquid display crystal means.
Smith Donald M.
Townley Roderick Malcolm
Metropolitan Clinical Laboratories (1987) Ltd.
Oyen Wiggs Green & Mutala Llp
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