GB2237564A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Calcium phosphate bone fillers
Assignee: Mitsubishi Mining and Cement Co Ltd
•
Filing: 1989-11-03
•
Granted: —
•
Expires: 2009-11-03
Abstract
Abstract A filler for filling in defects in bones or regions of osteoporosis contains calcium phosphate with particles of cylindrical or polygonal column shape. A cross-sectional contour is substantially the same along the length of the filler particles and the ratio of length to diameter of the cross-section thereof is in the range from 0.1 to 10. Phosphate is e.g. hydroxyapatite, calcium pyrophosphate, tricalcium phosphate etc.
Inventors
- 👤 Michael John Atkinson
- 👤 Peter Hugh Birch
- 👤 Hideaki Takahiashi
- 👤 Teruo Haba
- 👤 Hiroyasu Takeuchi
- 👤 Masahiro Hirano
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 12:45
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/28; A61L; A61L27/00; A61L27/02; A61L27/12; A61L27/14; A61L27/22; A61L27/225; A61F2/30; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/3028; A61F2230/00; A61F2230/0063; A61F2230/0069; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293; A61F2310/00365; A61F2310/00377; A61L2430/00; A61L2430/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
40 words
A bone filler containing a calcium phosphate compound and being shaped as a cylinder or a polygonal column with a substantially uniform cross-sectional shape and with a ratio of length to maximum cross sectional width being from 0.1 to 10.
Claim 2
Dependent Claim
40 words
A bone filler containing a calcium phosphate compound and being shaped as a cylinder or a polygonal column with a substantially uniform cross-sectional shape and with a ratio of length to maximum cross sectional width being from 0.1 to 10.
Claim 3
Dependent Claim
26 words
A bone filler according to claim 1, wherein the calcium phosphate compound is tricalcium phosphate, hydroxyapatite, tetracalcium phosphate, oxyapatite, calcium pyrophosphate, fluoroapatite or a mixture thereof
Claim 4
Dependent Claim
21 words
A bone filler according to claim 1 or claim 2, having a maximum crosssectional width of from 0.2 to 10 film.
Claim 5
Dependent Claim
21 words
A bone filler according to any preceding claim, further containing an additive comprising bone morphogenetic protein, fibrin or a mixture thereof.
Claim 6
Dependent Claim
33 words
A bone filler according substantially as described herein. to claim 1 ' Published 1991 at The Patent Office. State House. 66/71 High Holborn. London WCIR47P. Further copies maybe obtained from Sales Branch. Unit
Claim 7
Dependent Claim
18 words
Nine Mile Point Cwmilclinfach. Cross Keys, Newport. NPI 714Z. Printed by Multiplex techniques lid, St Mary Cray. Kent.
Claim 8
Dependent Claim
18 words
Nine Mile Point Cwmilclinfach. Cross Keys, Newport. NPI 714Z. Printed by Multiplex techniques lid, St Mary Cray. Kent.
References Cited (Backward Citations)
US4330514A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.