Method of making a catheter having a fuseless tip

Details Method of making a catheter having a fuseless tip Method of making a catheter having a fuseless tip

1986-03-05

1988-06-28

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Forming continuous work followed by cutting

264150, 264167, 264173, 425132, 604264, B29C 4706, B29C 6322

Patent

active

047537655

ABSTRACT:
A method is providing for making a thin-walled catheter of the type having a distal end adapted to be formed into a curve and guided through branching blood vessels or the like so that the catheter is provided with a two-layered tubular body portion having a rigid inner sheath and a flexible outer sheath, which may be radiopaque. The catheter exhibits excellent torque response and control while being especially thin-walled, thereby permitting minimization of the outer diameter size while providing excellent liquid flow rates therethrough and excellent strength properties. The tip portion is fuseless with respect to the rest of the catheter, the tip portion being an integral extension of the flexible outer sheath that is formed over a gap between lengths of the rigid inner sheath.

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