Implantable medical device formed from a refractory metal having a thin coating disposed thereon
AssigneeMedtronic, Inc.
InventorDuane L. Rosenberg
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Abstract
An implantable medical device formed from a drawn refractory metal and having an improved biocompatible surface is described. The method by which the device is made includes coating a refractory metal article with platinum by a physical vapor deposition process and subjecting the coating article to drawing in a diamond die. The drawn article can be incorporated into an implantable medical device without removing the deposited metal.
Claims1
An implantable medical device comprising an elongated article intended for exposure to body tissue or body fluids, the elongated article comprising a refractory metal coated by a physical vapor disposition process to form a coating thereon, the coating forming a biologically inert metal lubricant having a thickness ranging between about 500 Angstrom and about 3000 Angstrom, the article being drawn in a diamond die to form a smooth biocompatible surface finish.
Dependencies are inferred from the claim text.