Stiffened dilatation catheter and method of manufacture
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United States of America Patent
Stats
-
Oct 4, 1988
Grant Date -
N/A
app pub date -
Sep 2, 1986
filing date -
Sep 2, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Stiffened dilation catheter and method of manufacturing the same. The catheter has a relatively stiff proximal end portion formed by bonding a relatively stiff tubular member coaxially within the proximal end portion of a relatively soft outer tubular member. The outer tubular member has a distensible portion which forms an inflatable balloon. An inner tubular member or shaft having an axial lumen adapted to receive a guide wire is positioned coaxially within the other tubular members. The distal end portions of the inner and outer tubular members are sealed together to close the distal end of the balloon, and an annular passageway for inflating and deflating the balloon is formed between the outer wall of the inner member and the inner wall of the stiffened proximal end portion of the outer tubular member. The relative wall thicknesses of the inner and outer tubular members can be varied to provide any desired stiffness or profile of stiffness along the length of the catheter.
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