Method for making a vascular graft

Details Method for making a vascular graft Method for making a vascular graft

1984-12-06

1990-03-20

Lorin, Hubert C.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including use of vacuum

264573, 264230, 264232, 264340, 264342R, B29C 5700

Patent

active

049099795

ABSTRACT:
A mandrel assembly supports an umbilical cord during the shaping and curing of the cord for use as a vascular graft. The mandrel assembly has a pair of mandrel members adapted to be releasably connected in end-to-end relation. Adjacent end sections of the mandrel members have reduced cross sectional shapes to provide the graft with a throat to restrict the flow of blood through the vascular graft. Each mandrel member has a low friction outer surface to facilitate the insertion and withdrawal of the mandrel member from the lumen of the umbilical cord. In one embodiment, the adjacent ends and neck portions of the mandrel members have small holes. A vacuum pump draws air from within the mandrel members to withdraw moisture from the tissue of the umbilical cord and hold the umbilical cord in conforming relationship with the joined mandrel members during the forming and curing of the umbilical cord.

REFERENCES:
patent: 4126659 (1978-11-01), Blad
patent: 4546499 (1985-10-01), Possis et al.

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