Small diameter, high torque catheter
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United States of America Patent
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Oct 14, 1997
Grant Date -
N/A
app pub date -
Sep 26, 1995
filing date -
Nov 12, 1993
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A catheter comprises an inner tubular member, a braided reinforcement layer, and a soft outer layer. The inner tubular member extends from a proximal end of the catheter to a first distal location. The braided reinforcement layer extends from the proximal end of the catheter to a second distal location which is usually located proximally from the first distal location. The soft outer layer extends from the proximal end of the catheter to a third distal location which is usually located distally of the first distal location. In this way, a catheter having a shaft region, a transition region, and a distal region, each with different strength and flexibility characteristics, can be obtained. Such catheter constructions are particularly useful for very small diameter access catheters.
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