Kink resistant cannula having buckle resistant apertures
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United States of America Patent
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-
Apr 1, 2014
Grant Date -
Feb 10, 2005
app pub date -
Jul 14, 2004
filing date -
Jul 15, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A cannula has a body with a proximal end and a distal end and a tip on the distal end. The tip has an outer wall defining a lumen opening at the end of the tip and extending to the proximal end of the cannula. The tip further comprises one or more ribs extending into the lumen to support the outer wall from kinking when the cannula is flexed. The outer wall has a inner surface defining the lumen and a plurality of non-circular apertures formed in the tip extending into the lumen. The apertures having a major axis and a minor axis. The major axis aligned in relation to a circumference of the outer wall to prevent puckering or buckling when the tip is bent. This alignment is also designed to support the outer wall from kinking when the tip is bent.
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