GB2163960A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Ceramic prosthesis with porous surface
Assignee: Kyocera Corp
•
Filing: 1985-07-23
•
Granted: —
•
Expires: 2005-07-23
Abstract
No abstract record available.
Inventors
- 👤 Takeru Miwa
- 👤 Iwao Noda
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 05:23
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61L; A61L27/00; A61L27/28; A61L27/30; A61L27/306; C04B41/45; C04B41/50; C04B41/5025; C04B41/80; C04B41/81; C04B41/85; C04B41/87; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30242; A61F2002/30929; A61F2/3094; A61F2002/30968; A61F2230/00; A61F2230/0063; A61F2230/0071; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00185; A61F2310/00203; A61F2310/00389; A61F2310/00592; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
53 words
A ceramic prosthesis for the living body characterised in that a plurality of ceramic particles are bonded by sintering into one body with the surface of a ceramic substrate of alumina ceramics, zirconia ceramics or the like to permit the ingrowth of bone cells into gaps between the particles of said ceramic particles.
Claim 2
Dependent Claim
53 words
A ceramic prosthesis for the living body characterised in that a plurality of ceramic particles are bonded by sintering into one body with the surface of a ceramic substrate of alumina ceramics, zirconia ceramics or the like to permit the ingrowth of bone cells into gaps between the particles of said ceramic particles.
Claim 3
Dependent Claim
72 words
A ceramic prosthesis for the living body characterised in that a thin ceramic layer is formed over the surface of a ceramic substrate of alumina ceramics, zirconia ceramics or the like and a plurality of ceramic particles are bonded by sintering into one body with the surface of said ceramic substrate via said ceramic layer to permit the ingrowth of bone cells into gaps between the particles of said ceramic 10 particles.
Claim 4
Dependent Claim
72 words
A ceramic prosthesis for the living body characterised in that a thin ceramic layer is formed over the surface of a ceramic substrate of alumina ceramics, zirconia ceramics or the like and a plurality of ceramic particles are bonded by sintering into one body with the surface of said ceramic substrate via said ceramic layer to permit the ingrowth of bone cells into gaps between the particles of said ceramic 10 particles.
Claim 5
Dependent Claim
43 words
A ceramic prosthesis for the living body according to Claim 1 or 2 wherein said ceramic particles consist at least one kind of alumina ceramics, zirconia ceramics, said ceramic particles being in the range of 100 to 2500 ji in mean particle size.
Claim 6
Dependent Claim
66 words
A ceramic prosthesis for the living body according to claim 1 or 2 wherein said ceramic particles 15 are in the range of 250 to 350 11 in mean particles size and have gaps of 100 to 150 L formed between said particles to permit the ingrowth of bone cells into the gaps between said particles to form bone tissue in a short period of time.
Claim 7
Dependent Claim
67 words
A ceramic prosthesis for the living body according to Claim 1 or 2 wherein said ceramic particles are in the range of 1000 to 1500 R in mean particle size and have gaps of 400 to 600 R formed between 20 the particles to permit the ingrowth of bone cells into the gaps between said particles to form bone tis sue in a long period of time.
Claim 8
Dependent Claim
40 words
A ceramic prosthesis for the living body according to Claim 1 or 2 wherein said ceramic particles are bonded to the surface of said ceramic substrate in a distribution density of 16 to 50,000 particleS/CM2 in one to five layers.
Claim 9
Dependent Claim
34 words
A ceramic prosthesis for the living body according to Claim 2 wherein when said particles are 100 to 600 [1 in particle size, the thickness of said ceramic layer is 20 to 100 R.
Claim 10
Dependent Claim
34 words
A ceramic prosthesis for the living body according to Claim 2 wherein when said particles are 600 to 2500 [ú in particle size, the thickness of said ceramic layer is 100 to 200 11.
Claim 11
Dependent Claim
33 words
A ceramic prosthesis for the living body according to any one of claims 2, 6, 7 and 8 wherein said 30 ceramic layer contains a glass component consisting essentially of SiO, and/or 13201'
Claim 12
Independent Claim
76 words
A method of producing a ceramic p-osthesis for the living body characterized in that the method comprises applying a ceramic slurry onto a ceramic substrate to form a ceramic layer, dispersedly plac ing ceramic particles in a specified distribution density over that surface of said ceramic slurry and sintering thereafter said ceramic particles layer and substrate in a high temperature atmosphere of 1300 to 18000C to bond said particles to said ceramic via said ceramic layer.
Claim 13
Independent Claim
76 words
A method of producing a ceramic p-osthesis for the living body characterized in that the method comprises applying a ceramic slurry onto a ceramic substrate to form a ceramic layer, dispersedly plac ing ceramic particles in a specified distribution density over that surface of said ceramic slurry and sintering thereafter said ceramic particles layer and substrate in a high temperature atmosphere of 1300 to 18000C to bond said particles to said ceramic via said ceramic layer.
Claim 14
Dependent Claim
40 words
A method of producing a ceramic prosthesis for the living body according to Claim 10 wherein said ceramic particles are also coated beforehand with a ceramic slurry and are bonded by sintering to said ceramic substrate via said ceramic layer.
Claim 15
Dependent Claim
55 words
A method of producing a ceramic prosthesis for the living body according to Claim 10 wherein 40 said ceramic slurry contains less than 30% by weight of glass component. Printed in the UK for HMSO, D8818935, 1186, 7102. Published by The Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.