Resources Contact Us Home
Patient ventilator trigger circuit

Image Number 7 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
Data architecture and user interface for plasma processing related software applications
Actuators and moveable elements with position sensing
Preparation and use of meristematic cells belonging to the Dendrobium phalaenopsis, Ansellia, Polyrrhiza, Vanilla, Cattleya and Vanda genera with high content of phenylpropanoids, hydrosoluble
Detecting the type of NAT firewall using messages
Apparatus and method to simulate a power trip to a disk drive
Over the counter medicinal container with surface ornamentation
Floor standing rack
  Randomly Featured Patents
Determining a trust level of a user in a social network environment
Isolation monitoring system and method utilizing a variable emulated inductance
Benzothiadiazepine derivatives, processes for their preparation and pharmaceutical compositions containing them
Cutting-tooth anchor for suction dredge and method of making same
Flow regulator
Network device and method for local routing of data traffic
Photographic color developer solution and processing method by use thereof
Filter press
Treatment and prevention of mucositis in cancer patients
Method computer program product and computer system for modifying roles that trigger application services