Flexible breathing circuit
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United States of America Patent
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Nov 6, 1990
Grant Date -
N/A
app pub date -
Nov 3, 1988
filing date -
Nov 3, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A breathing circuit for providing conduit from a breathing apparatus or anaesthetic device to a patient, the breathing circuit being generally coaxial and including a first flexible tube and a second flexible tube inside the first flexible tube. The first flexible tube has a smooth inner surface and a reinforcing cord or ribbing along its length and integral around its outer surface. The first flexible tube has a relatively thin wall with the cord, which is preferably in a spiral, providing structural strength or stiffness while retaining flexibility.
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