Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Removing surface portion of composite workpiece to expose...
Patent
1984-04-05
1985-11-05
Lowe, James
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Removing surface portion of composite workpiece to expose...
128658, 264162, 264173, 264232, 264275, 264292, 264320, 264322, 264341, 425318, 425393, 604280, B29C 1702
Patent
active
045512922
ABSTRACT:
A method of forming a soft, deformable tip at the distal end of an elongated, flexible catheter made from a thermoplastic or elastomeric material in which the tip portion is first heated to soften the plastic and, subsequently, a specially prepared forming tool is inserted into the lumen of the catheter at the distal end and advanced to the point where an annular protuberance of a predetermined outside diameter is forced into the lumen so as to stretch and shape the plastic to conform to the forming tool. The distal end is then cooled and the forming tool removed, leaving a soft, collapsible segment integrally formed at the distal end of the catheter.
REFERENCES:
patent: T872012 (1970-03-01), Holt
patent: 2972779 (1961-02-01), Cowley
patent: 4459255 (1984-07-01), Sheridan
Fletcher Bruce W.
Reese Edward W.
Rydell Mark A.
Angiomedics, Inc.
Haugen Orrin M.
Lowe James
Nikolai Thomas J.
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