Method of making an outer cannula for an intravenous cannula and

Details Method of making an outer cannula for an intravenous cannula and Method of making an outer cannula for an intravenous cannula and

1996-12-04

2000-07-04

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

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

264296, 264323, 425393, B29C 5700

Patent

active

060834404

ABSTRACT:
A method for making an outer cannula of an intravenous cannula. An insert pin (3) is inserted into an outer cannula (1) having a hub (12) and a tube (11) made of a shape memory polyurethane resin and having an untreated distal end portion, until a tip end of the insert pin (3) reaches a position retracted from a distal end of the tube (11). While holding the position of the insert pin (3), the tube (11) with the insert pin (3) is forced into a cavity in a mold (4) heated to a temperature of 120.degree. C. to 180.degree. C. until the insertion of the tube into the cavity is obstructed. Subsequently, the insert pin (3) is moved within the tube (11) toward the extremity of the tube until the tip end of insert pin (3) reaches a first predetermined position in the mold (4). After maintaining the tube at the mold temperature until the tube is softened, the insert pin is further moved within the tube toward the extremity thereof and held in position for a certain period of time. The mold (4) is then cooled for a certain period of time. Then, the tube (11) is removed from the mold (4) together with insert pin (3), and subsequently the insert pin (3) is removed from the tube (11). Finally, the distal end portion of the tube (11) is cut to a desired length.

REFERENCES:
patent: 4404159 (1983-09-01), McFarlane
patent: 4551292 (1985-11-01), Fletcher et al.
patent: 4661300 (1987-04-01), Daugherty
patent: 4961809 (1990-10-01), Martin
patent: 5135599 (1992-08-01), Martin et al.
patent: 5178803 (1993-01-01), Tsuchida et al.
patent: 5360330 (1994-11-01), Jensen et al.
patent: 5409644 (1995-04-01), Martin et al.
patent: 5716410 (1998-02-01), Wang et al.
Patent Abstracts of Japan, Publication No. 62-270063, Publication Date: Nov. 8, 1988.

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