| 摘要 |
An elastomeric bag having opposite ends, a first opening at one of the bag ends and adapted to be connected to a resuscitator assembly, a second opening at the other of the bag ends, and a one-way flap valve at the second opening. The bag when compressed manually causes air to flow out through the first opening to the resuscitator assembly; and the bag, when allowed to expand, causes air to flow into the bag via the second opening past the one-way flap valve. A hollow plunger is slidably mounted within a cylinder bore, and a compressor spring biases the plunger. A post is located in the cylinder to seat one end of the spring, so that the spring urges the plunger toward the bag. An air vent is located in the cylinder and toward which the plunger is movable when the bag is compressed; and an air pressure release hole in the cylinder releases excess air pressure in the cylinder to the exterior, only after the plunger has been moved by air pressure to compress the spring to predetermined extent. |
