Method of coating medical devices and device coated thereby

Details Method of coating medical devices and device coated thereby Method of coating medical devices and device coated thereby

1995-02-06

1996-08-06

McFarland, Anthony

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

20419211, 20419214, 623 16, C23C 1446

Patent

active

055430198

ABSTRACT:
The invention features a method of depositing a coating on a medical device. The method includes: a) placing the medical device in an evacuated chamber, b) introducing a noble gas into the chamber, c) providing at least one target in the chamber, spaced from the device, and d) sputter depositing a coating onto the device by applying power to the target so that the noble gas forms a plasma in the vicinity of the target and material is sputtered from the target by ion bombardment and deposited on the device.
In another aspect, the invention features a medical device having a coating deposited by a plasma sputtering process. Preferably, the coating is a calcium containing compound.

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David R. Cooley et al.,--The Journal of Prosthetic Dentistry--"The advantages of coated titanium implants prepared by radiofrequency sputtering from hydroxyapatite", Jan. 1992, vol. 67, No. 1, pp. 93-100.
L. Torrisi and G. Foti--Appl. Phys. Lett.--"keV ion sputtering of hydrozyapatite", 62(3), 18 Jan. 1993, pp. 237-239.
J.L. Ong et al.,--Biomaterials--"Structure, solubility and bond strength of thin calcium phosphate coatings produced by ion beam sputter deposition", 1992, vol. 13, No. 4, pp. 249-255.
W.R. Lacefield--Ann. N.Y. Acad. of Sciences--"Hydroxyapatite Coatings", 1988, pp. 72-81.
J.L. Ong et al.--The 17th Annual Meeting of the Society for Biomaterials--"Properties of calcium-phosphate coatings produced by ion-beam sputter deposition", May 1-5, 1991, p. 4.
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