Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Arterial prosthesis – Stent structure
Patent
1988-08-25
1991-01-22
Isabella, David J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Arterial prosthesis
Stent structure
A61F 206
Patent
active
049868322
ABSTRACT:
Disclosed is an artificial blood comprising a vessel wall that is comprised of plural layers and is porous as a whole, wherein an innermost layer has open-cell structure in which pores are connected through each other, and has a thickness of not less than 5 .mu.m or more and not more than 2/3 of the thickness of the vessel wall. Also disclosed is a process for preparing an artificial blood vessel, comprising the steps of; solidifying a layer that has been formed on the surface of a rod-like substrate by coating a solution comprising a polymeric compound, followed by desolvation to make a rod; coating a solution having the same composition as the solution comprising a polymeric compound, on the inner surface of the rod, and spraying a powder which is insoluble to the polymeric compound solution thereon; solidifying the polymeric compound solution coated on the inner surface of the rod, followed by desolvation; and removing the powder from the polymeric compound.
REFERENCES:
patent: 4576608 (1986-03-01), Homsy
patent: 4657544 (1987-04-01), Pinchuk
patent: 4813966 (1989-03-01), Gilding et al.
patent: 4822352 (1989-04-01), Joh et al.
Hirata Yoshimi
Kaneko Noriaki
Moriwaki Masahiro
Isabella David J.
Ube Industries Ltd.
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