Balloon catheter and manufacturing method of the same
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United States of America Patent
Stats
-
Aug 27, 1991
Grant Date -
N/A
app pub date -
Jul 10, 1989
filing date -
Jan 13, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A balloon catheter is provided, which comprises a catheter body made of a flexible tube provided with at least one inner channel and with an annular groove formed on an outer surface near the distal end portion of the tube, and a balloon covering the annular groove in such a manner that the outer diameter of the balloon is equal to or smaller than a maximum diameter of the distal end portion of the tube, the balloon being expanded or shrunk through another inner channel. A method of manufacturing the balloon catheter which comprises the steps of reducnig an outer diameter of a distal end portion of the catheter body while keeping a desired inner channel undamaged, mounting a tubular heat-resistant member to a prospective balloon mounting portion of the reduced diameter portion, molding a reduced diameter portion extruded from the heat-resistant member into a spherical shape, and mounting an inflatable balloon to the balloon mounting portion after removing the heat-resistant member.
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