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A resuscitation valve assembly includes a housing with an inlet port adapted to be connected to a pressurized breathable gas source, such as oxygen, an outlet port adapted to be connected to a patient's airway and an ambient air port. The inhalation chamber is connected to the pressurized gas source

A resuscitation valve assembly includes a housing with an inlet port adapted to be connected to a pressurized breathable gas source, such as oxygen, an outlet port adapted to be connected to a patient's airway and an ambient air port. The inhalation chamber is connected to the pressurized gas source when a manually operated valve, within the housing, is open and is disconnected from the inhalation chamber when the valve is closed. An inhalation/exhalation check valve is disposed between the inhalation chamber, the outlet port and the ambient air port to conduct the high pressure gas through the outlet port and into the patient's airway, vent the patient's exhaled gas through the ambient air port and allow ambient air to flow through the outlet port in response to the patient's spontaneous breathing.

대표청구항 ▼

A resuscitation valve assembly includes a housing with an inlet port adapted to be connected to a pressurized breathable gas source, such as oxygen, an outlet port adapted to be connected to a patient's airway and an ambient air port. The inhalation chamber is connected to the pressurized gas source

A resuscitation valve assembly includes a housing with an inlet port adapted to be connected to a pressurized breathable gas source, such as oxygen, an outlet port adapted to be connected to a patient's airway and an ambient air port. The inhalation chamber is connected to the pressurized gas source when a manually operated valve, within the housing, is open and is disconnected from the inhalation chamber when the valve is closed. An inhalation/exhalation check valve is disposed between the inhalation chamber, the outlet port and the ambient air port to conduct the high pressure gas through the outlet port and into the patient's airway, vent the patient's exhaled gas through the ambient air port and allow ambient air to flow through the outlet port in response to the patient's spontaneous breathing. ter than the resistance of the first coil so that said value of said second current is determined primarily by the resistance of the second coil. 9. A fuel injection apparatus according to any one of claims 1 to 7, wherein said first and second switching circuits each include a transistor provided with a surge absorbed diode. 10. An internal combustion engine comprising a fuel injection apparatus for injecting fuel, a fuel supply system for supplying fuel into said fuel injection apparatus, a cylinder for burning therein fuel injected by said fuel injection apparatus, a piston reciprocating in said cylinder, an intake system for supplying air into said cylinder, an ignition device for igniting a fuel-air mixture inside said cylinder, an exhaust system for exhausting gas from the inside of said cylinder, and an engine control unit for controlling said intake system, said exhaust system, said ignition device and said fuel injection device, said fuel injection apparatus being provided with an electromagnetic fuel injection valve and a driving circuit driving said electromagnetic fuel injection valve, and said electromagnetic fuel injection valve being provided with a fuel injection hole, a valve seat on an upstream side of said fuel injection hole, a valve body for effecting valve opening of a fuel passage between said valve body and said valve seat, and a coil for generating a driving force for displacing said valve body, wherein said magnetic fuel injection valve is provided with a first coil having a large rate of change in time of magnetomotive force and a second coil having a smaller rate of change in time of magnetomotive force than said first coil, one end of said first coil is connected to a plus side of a power supply of said driving circuit, the other end of said first coil is connected to one end of said second coil and to a minus side of said power supply using a fir