US6010336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Living body-supporting member and preparation process thereof
Assignee: Kyocera Corp
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Filing: 1995-12-20
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Granted: 2000-01-04
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Expires: 2015-12-20
Abstract
Abstract A living body-supporting member having a surface layer with multiple pores regularly arranged therein, in which the porous portions constituting the living body-supporting member are made of ceramics giving no harm to a human body. And a method to perforate multiple pores in a green sheet made of the ceramics, to laminate the green sheets so that pores communicate with each other, and to fire it. The living body-supporting member is coupled with the bone, and there is no risk that it may drop from the supporting portion. Even if the substrate is composed of ceramics, the substrate and the surface layer can be integrally coupled with each other, thereby there is no risk that both of them are separated. Furthermore, according to the above method, the pore shapes of the porous body can be preliminarily designed so that pores communicate with each other while being displaced for every certain depth, and it can be accurately controlled in the production thereof.
Inventors
- 👤 Toshihiko Shimotoso
- 👤 Akira Terui
- 👤 Hiroyuki Kitano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:41
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/30; A61F2/30767; A61L; A61L27/00; A61L27/02; A61L27/10; A61L27/12; A61F2/38; A61F2/3859; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30011; A61F2002/30108; A61F2002/30199; A61F2002/30261; A61F2/30907; A61F2002/30909; A61F2002/30915; A61F2002/30929; A61F2/3094; A61F2002/30971; A61F2230/00; A61F2230/0063; A61F2230/0082; A61F2250/00; A61F2250/0014; A61F2250/0023; A61F2250/0024; A61F2310/00; A61F2310/00005; A61F2310/00179; A61F2310/00293
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
121 words
A process of preparing a living body supporting member, comprising: providing a plurality of green sheets of biologically inert ceramic material, each of the plurality of green sheets having a thickness between about 100 and 1000 microns, perforating each of the plurality of green sheets with a plurality of regularly spaced pores, laminating the plurality of green sheets so that the plurality of regularly spaced pores of each green sheet is displaced relative to the plurality of regularly spaced pores of at least one adjacent green sheet and the plurality of regularly spaced pores of each green sheet communicates with the plurality of regularly spaced pores of at least one adjacent green sheet, and firing the laminated plurality of green sheets.
Claim 2
Dependent Claim
121 words
A process of preparing a living body supporting member, comprising: providing a plurality of green sheets of biologically inert ceramic material, each of the plurality of green sheets having a thickness between about 100 and 1000 microns, perforating each of the plurality of green sheets with a plurality of regularly spaced pores, laminating the plurality of green sheets so that the plurality of regularly spaced pores of each green sheet is displaced relative to the plurality of regularly spaced pores of at least one adjacent green sheet and the plurality of regularly spaced pores of each green sheet communicates with the plurality of regularly spaced pores of at least one adjacent green sheet, and firing the laminated plurality of green sheets.
Claim 3
Dependent Claim
42 words
A process of preparing a living body supporting member according to claim 1, further comprising a step of bonding the plurality of laminated green sheets to a plate of biologically inert ceramic material thicker than each of the plurality of green sheets.
Claim 4
Dependent Claim
30 words
A process of preparing a living body supporting member according to claim 2, wherein the plate and the plurality of laminated green sheets use the same biologically inert ceramic material.
Claim 5
Dependent Claim
54 words
A process of preparing a living body supporting member according to claim 3, further comprising a step of firing the plurality of laminated green sheets bonded to the plate to form a two-layer structure including a porous portion formed from the plurality of laminated green sheets and a dense portion formed from the plate.
Claim 6
Dependent Claim
114 words
A process of preparing a living body supporting member according to claim 1, further comprising: a step of dividing the plurality of green sheets into first and second groups; a step of perforating each of the green sheets in the first group with first pores at a first pitch, each of the first pores having a first diameter; a step of perforating each of the green sheets in the second group with pores at a second pitch greater than the first pitch, each of the second pores having a second diameter; and a step of alternately laminating the perforated green sheets in the first group and the perforated green sheets in the second group.
Claim 7
Dependent Claim
23 words
A process of preparing a living body supporting member according to claim 5, wherein the second diameter is greater than the first diameter.
Claim 8
Dependent Claim
42 words
A process of preparing a living body supporting member according to claim 6, further comprising a step of bonding the plurality of laminated green sheets to a plate of biologically inert ceramic material thicker than each of the plurality of green sheets.
Claim 9
Dependent Claim
30 words
A process of preparing a living body supporting member according to claim 7, wherein the plate and the plurality of laminated green sheets use the same biologically inert ceramic material.
Claim 10
Dependent Claim
54 words
A process of preparing a living body supporting member according to claim 8, further comprising a step of firing the plurality of laminated green sheets bonded to the plate to form a two-layer structure including a porous portion formed from the plurality of laminated green sheets and a dense portion formed from the plate.
Claim 11
Dependent Claim
123 words
A process of preparing a living body supporting member, comprising: providing a plurality of green sheets of biologically inert ceramic material, each of the plurality of green sheets having a thickness between about 100 and 1000 microns, perforating each of the plurality of green sheets with a plurality of regularly spaced slits, laminating the plurality of green sheets so that the plurality of regularly spaced slits of each green sheet is disposed transverse with respect to the plurality of regularly spaced slits of at least one adjacent green sheet and the plurality of regularly spaced slits of each green sheet communicates with the plurality of regularly spaced slits of at least one adjacent green sheet, and firing the laminated plurality of green sheets.
Claim 12
Dependent Claim
123 words
A process of preparing a living body supporting member, comprising: providing a plurality of green sheets of biologically inert ceramic material, each of the plurality of green sheets having a thickness between about 100 and 1000 microns, perforating each of the plurality of green sheets with a plurality of regularly spaced slits, laminating the plurality of green sheets so that the plurality of regularly spaced slits of each green sheet is disposed transverse with respect to the plurality of regularly spaced slits of at least one adjacent green sheet and the plurality of regularly spaced slits of each green sheet communicates with the plurality of regularly spaced slits of at least one adjacent green sheet, and firing the laminated plurality of green sheets.
Claim 13
Dependent Claim
42 words
A process of preparing a living body supporting member according to claim 10, wherein the regularly spaced slits of each of the plurality of green sheets are perforated to extend across substantially the width of each of the plurality of green sheets.
Claim 14
Dependent Claim
50 words
A process of preparing a living body supporting member according to claim 11, wherein the plurality of green sheets are laminated so that the plurality of regularly spaced slits of each green sheet is disposed transverse with respect to the plurality of regularly spaced slits of an adjacent green sheet.
Claim 15
Dependent Claim
42 words
A process of preparing a living body supporting member according to claim 10, further comprising a step of bonding the plurality of laminated green sheets to a plate of biologically inert ceramic material thicker than each of the plurality of green sheets.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-01-03 | 2003-07-05 | 2004-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-03 | 2007-07-05 | 2008-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-03 | 2011-07-05 | 2012-01-04 | $7700.00 | Window Closed / Lapsed |