Resources Contact Us Home
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
Multi-dimensional tuple support in rule engines
Surround sound effects provided by cell phones
Configurations and methods for effluent gas treatment
Synchronization of communication equipment
Systems and methods for controlling registration of advancing substrates in absorbent article converting lines
Boring machine
Shield for vacuum circuit breaker
  Randomly Featured Patents
Reference sphere detecting device, reference sphere position detecting device, and three-dimensional-coordinate measuring device
Battery charger dashboard
Methods and systems for assigning objects to processing units
Initiation of network treatment for data packet associated with real-time application different from network treatment applicable to data packet non-associated with the real-time application
Oral composition exhibiting enhanced uptake by dental tissue of noncationic antibacterial agents
Method of manufacturing a semiconductor device
Electric fault current limiter having superconducting elements inside a cryogenic vessel and bushings for connecting an external circuit
Hand tool machine, in particular drilling machine
Opening-closing device of western style toilet seat and seat cover