Method of making a catheter

Details Method of making a catheter Method of making a catheter

1978-01-25

1979-05-22

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264230, 264274, 264327, 264345, B29C 2300

Patent

active

041559665

ABSTRACT:
A catheter assembly including a plastic tube having a cup-shaped bulb at one end and which is oval in cross section. The walls of the bulb are thicker than the remainder of the tube and a hub is molded about the bulb both interiorly and exteriorly thereof. The bulb is formed by placing the tube on a mandrel, which extends from a mandrel carrier, and thereafter placing the carrier on a base so that the upper end of the tube and mandrel extend through a slot and into a heating cavity defined by a housing. The upper end of the tube is subjected to radiant heat on opposite sides thereof to heat the circumference of the tube unevenly to form and define the cup-shaped bulb. The upper end of the tube is heated to a temperature close to its melting point.

REFERENCES:
patent: 2378901 (1945-06-01), Amrhein
patent: 3000057 (1961-09-01), Swedlow
patent: 3092439 (1963-06-01), Harrison
patent: 3545168 (1970-12-01), Day
patent: 3929943 (1975-12-01), Klimaszewski

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