Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Patient ventilator trigger circuit










Image Number 6 for United States Patent #3991790.

Disclosed herein is a patient ventilator apparatus having a pneumatic control system operable in three different modes wherein the apparatus assists the breathing of the patient, controls the patient's breathing in a timed manner, or operates in a combination assist/control mode according to certain predetermined conditions. Fluidic circuitry controls a valved bellows apparatus, which in turn supplies air to a patient subject to limitations of time, volume, and pressure, wherein the gas supplied to the bellows comprises an adjustable oxygen/air mixture. Fluidic timers are provided for use in the control mode of the circuitry, and identical fluidic circuitry combinations are provided for use in the assist mode to automatically trigger the ventilator apparatus into an inspiratory state according to the patient's breathing requirements and to trigger such apparatus into an exhalation state when a predetermined inspiratory pressure is attained.








 
 
  Recently Added Patents
Light-emitting device with a spacer at bottom surface
Dynamic web page construction based on determination of client device location
Multi-touch recognition resistive touch screen for recognizing multi-touch coordinates through capacitor charging time
LED illumination systems
Leaky wave mode solar receiver
Simplified algorithm for abnormal situation prevention in load following applications including plugged line diagnostics in a dynamic process
Systems, methods and apparatus for payment processing
  Randomly Featured Patents
Simplified multilayer circuit board
Collapsible pet carrier
Flat packaging of petri dishes for prolonged preservation and method of producing the same
Printing apparatus and power consumption reduction method of printing apparatus
Coin sensor
Keyboards having multiple groups of keys in the management of a process control plant
Light source device and projection display apparatus
Container for storing pasty or fluidic compositions and appointed dispensing of the same
Sampling frequency offset tracking method and OFDM system using the same
Kelly drive bushing adapter