Flexible tubular member for catheter construction
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United States of America Patent
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-
Oct 2, 1990
Grant Date -
N/A
app pub date -
Mar 31, 1989
filing date -
Mar 31, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A catheter having a two-part tubular member that defines a passageway which extends completely through the catheter. One part of the tubular member is a relatively stiff tube having a reduced wall thickness at its distal end that is spirally cut to increase its flexibility. A more flexible sheath covers the reduced thickness, distal portion of the relatively stiff tube to insure that the tubular member can hold pressure. A preferred flexible sheath or tube is constructed using a biaxially oriented polymer such as nylon or polyethylene.
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