Implantable catheters with non-adherent contacting polymer surfa

Details Implantable catheters with non-adherent contacting polymer surfa Implantable catheters with non-adherent contacting polymer surfa

1982-09-24

1985-08-20

Apley, Richard J.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604280, 128DIG14, 128DIG21, 427 2, 427 39, A61M 2500

Patent

active

045361797

ABSTRACT:
Catheters for long term implantation having polymer surfaces in face-to-face contact which are provided with a thin film coating of a glow discharge plasma polymerized fluorocarbon to prevent adhesion of the contacting surfaces. The polymerized fluorocarbon film, between about 50 and 1000 Angstroms in thickness, is bonded to the substrate material giving a low surface energy without changing its bulk properties. The low surface energy will prevent adhesion of cured polymer surfaces in contact and act as a lubricant. The smooth pinhole-free films will control or prevent diffusion into or out of the bulk material. These biocompatible films provide an alternative use for polymers whose bulk properties are unacceptable but whose surface properties are desirable.

REFERENCES:
patent: 2814296 (1957-11-01), Everett
patent: 3703585 (1972-11-01), Agnone et al.
patent: 3922378 (1975-11-01), Kline
patent: 4100113 (1978-07-01), McCain
patent: 4125152 (1978-11-01), Kestner et al.
patent: 4160454 (1979-07-01), Foux
Chem. Abst.; vol. 95; 1981; No. 95: 209403q; "Thin Film Dep. by Plasma Poly. and Its App."; Hozumi et al.; Jitsumu Hyomen Gijutsu; 1981, 28(7); pp. 318-323 (Japanese).
"Silastic Intravenous Catheter"; Stewart et al.; The Bulletin of the Dow Corning Cent. for Aid to Med. Res.; Apr. 1962; pp. 5-6.
K. G. Budinski, J. Vac. Sci. Technol., 12:786-789, 1975.

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