Coating processes – Medical or dental purpose product; parts; subcombinations;... – Particulate or unit-dosage-article base
Patent
1975-08-06
1977-04-05
Frinks, Ronald L.
Coating processes
Medical or dental purpose product; parts; subcombinations;...
Particulate or unit-dosage-article base
427203, 427206, 428 90, 3 1, 3 17, 128 1D, A61K 500, B05D 114, B05D 116, A61F 100
Patent
active
040163032
ABSTRACT:
Blood-contacting surfaces of artificial implant devices which have been flocked with fibers of a blood-compatible polymeric material to promote formation of a stable and viable biological lining when the device has been implanted in a living body, are treated to strengthen the bonds between the fibers and the substrate surface and to interlock the fibers with each other so as to substantially reduce the possibility of fiber separation and release from the substrate surface into the blood stream. The treatment is effected by applying to the flocked surface a dilute solution of an adhesive material in a solvent therefor, the content of the adhesive material in the treating solution being controlled so as to be sufficient to coat the fibers only at their points of contact with each other and with the substrate surface. When the solvent is thereafter evaporated from the substrate surface, secondary bonds of adhesive material are formed at such points of contact, leaving the fibers otherwise uncoated so as not to interfere with their biological lining formation-promoting properties.
REFERENCES:
patent: 3098755 (1963-07-01), Barth et al.
patent: 3956553 (1976-05-01), Palmer et al.
"An Improved Blood-Pump Interface for Left-Ventricular Bypass," by William F. Bernard et al., Annals of Surgery, vol. 168, No. 4, Oct. 1968, pp. 750-764.
Keiser John T.
Poirier Victor L.
Frinks Ronald L.
The United States of America
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