CELL GROWTH-INHIBITING FILM, MEDICAL INSTRUMENT AND STENT FOR DIGESTIVE ORGANS

摘要

A cell growth-inhibiting film made of a resin having a porous structure formed at least on the surface thereof; a method of inhibiting cell growth comprising contacting the surface of a film made of a resin having a porous structure formed at least on the surface thereof with cells to thereby inhibit the growth of the cells in the contact area; a medical instrument wherein a medical instrument base is totally or partly coated with a film made of a resin having a porous structure formed at least on the surface; and a stent for digestive organs wherein a stent base is coated with a film made of a resin having a porous structure which is provided with penetrating holes having an average pore size of 0.1 to 20 mum and a coefficient of variance in pore size of 30% or less. Thus, it is possible to provide a material appropriately usable in constructing medical instruments which shows a cell growth inhibitor effect without resort to any physiologically active substance, and a stent for digestive organs which ensures the provision of a luminal space in an digestive organ and allows the permeation of a digestive fluid and digestive enzymes contained therein but does not allow the permeation cancer cells.