Method of making an access graft and a vascular prosthesis

Details Method of making an access graft and a vascular prosthesis Method of making an access graft and a vascular prosthesis

1996-05-24

1998-05-26

Davis, Robert

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Plural sequential shaping or molding steps on same workpiece

264306, 264339, B29C 5308

Patent

active

057560358

ABSTRACT:
A vascular prosthesis is adapted for use as an access graft having a permanent set, kink-resistant U-bend section. A method for making the access graft includes the utilization of a tube of implantable material adapted to be attached in a blood circulatory system and to provide thereby a site for access for cannulation, the tube having a permanent set, kink-resistant U-shaped bent section and the method including the steps of forming a straight tube by a process which yields a set, dryable tube; taking a length of the tube and inserting in it along its length a flexible rod-like support member; wrapping the tube containing the support member around a core so as to define a bend in the tube, the bend being wet at this stage; drying the wet tube containing the support member while wrapped around the core to permanently shape the tube into a bent form; removing the dried tube from the core and removing the support member so as to form an access graft, U-shaped bent section.

REFERENCES:
patent: 2964796 (1960-12-01), Press
patent: 4257422 (1981-03-01), Duncan
patent: 4345414 (1982-08-01), Bornat et al.
patent: 4562597 (1986-01-01), Possis et al.
patent: 4888074 (1989-12-01), Pocknell
patent: 5132066 (1992-07-01), Charlesworth et al.

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