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EP0202908A2
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Method for the production of endosseous implants
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1986-05-19
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Granted: —
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Expires: 2006-05-19
Abstract
Abstract An improved method for the production of endosseous implants which comprises 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 substantially not dissolve the hydroxyapatite but can dissolve calcium oxide and thereby dissolving out alkaline components. The endosseous implants of this invention show 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.
Inventors
- 👤 Kazuhiko Nakano
- 👤 Keiichirou Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 06:25
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61C; A61C8/00; A61C8/0012; A61F2/28; A61K; A61K6/00; A61K6/50; A61K6/58; A61K6/80; A61K6/831; A61K6/838; A61K6/84; A61K6/844; A61K6/849; A61K6/878; A61L; A61L27/00; A61L27/28; A61L27/30; A61L27/32; C; C23; C23C; C23C4/00; C23C4/04; C23C4/10; C23C4/11; C23C4/18; A61C8/0013; A61F2310/00; A61F2310/00389; A61F2310/00592; A61F2310/00796; A61L2430/00; A61L2430/02; Y; Y10; Y10S; Y10S623/00; Y10S623/92
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
55 words
A method for the production of endosseous implants comprising thermally spraying a hydroxyapatite-containing powder onto the surface of a metallic core material, and treating the thermally sprayed product with an aqueous solution which does substantially not dissolve the hydroxyapatite but does dissolve calcium oxide whereby the alkaline components are dissolved out from the said product.
Claim 2
Independent Claim
55 words
A method for the production of endosseous implants comprising thermally spraying a hydroxyapatite-containing powder onto the surface of a metallic core material, and treating the thermally sprayed product with an aqueous solution which does substantially not dissolve the hydroxyapatite but does dissolve calcium oxide whereby the alkaline components are dissolved out from the said product.
Claim 3
Dependent Claim
24 words
The method according to claim 1, wherein the aqueous solution is an aqueous solution comprising ammonium chloride, magnesium chloride, ammonium nitrate or magnesium nitrate.
Claim 4
Dependent Claim
20 words
The method according to claim 1, wherein the aqueous solution is an aqueous solution comprising sucrose, glucose, fructose or arabinose.
Claim 5
Dependent Claim
19 words
The method according to claim 1, wherein the aqueous solution is an aqueous solution of ethylene glycol and/or glycerol.
Claim 6
Dependent Claim
19 words
The method according to claim 1, wherein the aqueous solution is an aqueous solution of ammonium chloride and sucrose.
Claim 7
Dependent Claim
13 words
The method according to claim 1, wherein the thermal spraying is plasma spraying.
Claim 8
Independent Claim
23 words
The method according to any one of the preceding claims, wherein the core material is titanium, a titanium alloy, or a cobalt-chromium alloy.
Claim 9
Dependent Claim
31 words
The method according to claim 7, wherein the surface of the metallic core material has been treated to make the surface rough to provide better adhesion for the thermally sprayed material.
Claim 10
Independent Claim
25 words
The method according to any one of the preceding claims, wherein the treatment with the aqueous solution is at a temperature of 20 to 80°C.
References Cited (Backward Citations)
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