Thin wall catheter having enhanced torqueability characteristics
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United States of America Patent
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Apr 4, 1995
Grant Date -
N/A
app pub date -
May 18, 1994
filing date -
May 18, 1994
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A diagnostic catheter comprises an inner layer of 100 percent polyamide over which is a braided metal wire sleeve and an outer layer formed as a blend of either the polyamide and PEBA along with a suitable radiopaque filler or, alternatively, a blend of PEBA having different durometers. Affixed either directly to the end of the above tubular body or to a stem member secured to that tubular body is a soft-tip formed from a blend of PEBA whose hardness is such that the catheter can be considered as having an atraumatic tip. The resulting catheter exhibits excellent torque and column strength characteristics while providing a relatively large diameter lumen for a given outside diameter.
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