Method for the production of endosseous implants

Patent 4687675 Issued on August 18, 1987. Estimated Expiration Date:

May 20, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Implants for bones, joints and tooth roots
Patent #: 4146936
Issued on: 04/03/1979
Inventor: Aoyagi , et al.

Implants for bones, joints or tooth roots Patent #: 4223412
Issued on: 09/23/1980
Inventor: Aoyagi , et al.

Inventors

Assignee

Sumitomo Chemical Company, Limited

Application

No. 06/865089 filed on 05/20/1986

US Classes:

427/2.27, Inorganic oxygen-containing compound containing layer formed (e.g., hydroxyapatite, ceramic, glass)427/352, Liquid extraction of coating constituent or cleaning coating427/422, Heated coating material427/447, Organic containing coating606/76, Specialized coating or material623/920METHOD OR APPARATUS FOR PREPARING OR TREATING PROSTHETIC

Examiners

Primary: Beck, Shrive

Attorney, Agent or Firm

Birch, Stewart, Kolasch and Birch

International Classes

A61C 8/00 (20060101)
A61F 2/30 (20060101)
C23C 4/10 (20060101)
A61L 27/00 (20060101)
A61L 27/32 (20060101)
A61K 6/00 (20060101)
C23C 4/18 (20060101)
A61F 2/00 (20060101)

Foreign Application Priority Data

1985-05-20 JP

Abstract

An improved method for the production of endosseous implants is disclosed. The method includes thermally spraying a hydroxyapatite-containing powder onto the surface of a metallic core material, and treating the resultant product with an aqueous solution which does not substantially dissolve the hydroxyapatite but can dissolve calcium oxide, to thereby dissolve out alkaline components. The endosseous implants of this invention have excellent mechanical properties and excellent affinity to the living body without hematolysis, and hence, are useful for the treatment or recovery of defective or lost bones, joints and tooth roots.