| 摘要 |
<p>A device according to an aspect of the invention includes an air escapement conduit (52) having an inlet port providing air communication with a chest cavity (51) and an outlet port providing air communicaiton with a vacuum source (22), the conduit allowing an air flow from the inlet port (48) to the outlet port (49) in response to a pressure differential between the ports, and a detector responsive to the air flow that provides a signal (S1) related to the air flow. The device may include an indicator device (60) operable to provide evacuation information in response to the signal. The air escapement conduit may include a bubble chamber (42) or a valving mechanism (210). The detector may be a pressure differential sensor (122) operable to detect a difference in air pressure between the inlet port and the outlet port, and generate a signal related (S1) to the difference.</p> |
