Surgery – Diagnostic testing – Respiratory
Reexamination Certificate
2007-04-24
2007-04-24
Nasser, Robert L. (Department: 3735)
Surgery
Diagnostic testing
Respiratory
C600S538000, C600S542000
Reexamination Certificate
active
10259007
ABSTRACT:
A device according to an aspect of the invention includes an air escapement conduit having an inlet port providing air communication with a chest cavity and an outlet port providing air communication with a vacuum source, the conduit allowing an air flow from the inlet port to the outlet port in response to a pressure differential between the ports, and a detector responsive to the air flow that provides a signal related to the air flow. The device may include an indicator device operable to provide evacuation information in response to the signal. The air escapement conduit may include a bubble chamber or a valving mechanism. The detector may be a pressure differential sensor operable to detect a difference in air pressure between the inlet port and the outlet port, and generate a signal related to the difference.
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Knobbe Martens Olson & Bear LLP
Nasser Robert L.
Natnithithadha Navin
Spiration, Inc.
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