EP0520690A2
Expired / Lapsed
EP
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Calcium phosphate type hardening material for repairing living hard tissue
Assignee: Nitta Gelatin Inc
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Filing: 1992-06-18
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Granted: —
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Expires: 2012-06-18
Abstract
Abstract Hardening materials are provided which show excellent kneading-processability and uniform filling property of their pastes and are controlable to moderate setting time. In addition, the pH of the neighborhood of the filled part immediately after filling into living body lies in a weakly basic region, and the materials are able to integrate into living hard tissue. The materials are made by combining a powder component containing at least tetracalcium phosphate and calcium hydrogen phosphate with a liquid component containing secondary phosphate and organic acid ions.
Inventors
- 👤 Yoshinobu C/O Osaka Plant Mandai
- 👤 Kohji C/O Osaka Plant Nagatomi
- 👤 Kazuhiko C/O Osaka Plant Minamigawa
- 👤 Fumihito C/O Osaka Plant Sugihara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 01:00
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/02; A61L27/12; A61K; A61K6/00; A61K6/80; A61K6/831; A61K6/838; A61K6/849; A61K6/864; A61L24/00; A61L24/02; A61F; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
35 words
A haedening material for repairing living hard tissue, being made by combining a powder component containing at least tetracalcium phosphate and calcium hydrogen phosphate with a liquid component containing secondary phosphate and organic acid ions.
Claim 2
Dependent Claim
36 words
The material of claim 1 wherein the liquid component is a buffer solution containing at least one of disodium hydrogen phosphate and dipotassium hydrogen phosphate and containing at least one of citric acid and malic acid.
Claim 3
Dependent Claim
9 words
The material of claim 1 further containing a thickner.
Claim 4
Dependent Claim
9 words
The material of claim 2 further containing a thickner.
Claim 5
Dependent Claim
29 words
The material of claim 3 wherein the thickner is at least one selected from the group consisting of carboxymethyl cellulose sodium, poly(glutamic acid) and its salts, and hydroxypropyl cellulose.
Claim 6
Dependent Claim
29 words
The material of claim 4 wherein the thickner is at least one selected from the group consisting of carboxymethyl cellulose sodium, poly(glutamic acid) and its salts, and hydroxypropyl cellulose.
Claim 7
Dependent Claim
20 words
The material of any one of claims 1, 2, 3, 4, 5 and 6 further containing a X-ray contrast medium.
References Cited (Backward Citations)
No citation records indexed.
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