Artificial implant with fiber-flocked blood-contacting surface

Details Artificial implant with fiber-flocked blood-contacting surface Artificial implant with fiber-flocked blood-contacting surface

1976-11-01

1978-04-18

Frinks, Ronald L.

Surgery

Truss

Pad

3 14, 3 17, 128 1D, A61F 100, A61F 124, A61M 103

Patent

active

040842665

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 biologicial lining formation-promoting properties.

REFERENCES:
patent: 3992725 (1976-11-01), Homsy
"An Improved Blood-Pump Interface for Left-Vetricular Bypass" by W. F. Bernhard et al., Annals of Surgery, vol. 168, No. 4, Oct. 1968, pp. 750-764.

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