US5370692A
Expired / Lapsed
US
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Rapid, customized bone prosthesis
Assignee: BIOZ LLC
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Filing: 1992-08-14
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Granted: 1994-12-06
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Expires: 2012-08-14
Abstract
Abstract Prosthetic bone implants are fabricated to approximately replicate a patient's original bone. Medical computer aided imaging techniques are applied to generate a data base representing the size and shape of the original bone in a three dimensional coordinate system. The implantable replica is fabricated using the data base and free form manufacturing to sequentially solidify adjoining, cross-sectional intervals of a fluid material. Appropriate fluid materials include ceramic particles which may be selectively bonded by sintering or bonding with a polymer, and a monomer which is polymerized at selected regions by an incident laser beam.
Inventors
- 👤 David J. Fink
- 👤 Salvatore T. DiNovo
- 👤 Thomas J. Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:05
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/4097; G05B19/4099; A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/3094; A61F2/30942; B; B29; B29C; B29C41/00; B29C41/34; B29C41/36; B29C64/00; B29C64/10; B29C64/165; A61C; A61C13/00; A61C13/0003; A61C13/0006; A61C13/0019; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30011; A61F2002/30948; A61F2002/30952; A61F2002/30957; A61F2002/30968; A61F2002/3097; A61F2250/00; A61F2250/0014; A61F2250/0023; B29K; B29K2105/00; B29K2105/0002; B29K2105/0058; B29K2105/0073; B33; B33Y; B33Y80/00; G05B2219/00; G05B2219/30; G05B2219/45; G05B2219/45168; G05B2219/49; G05B2219/49017; G05B2219/49018; Y; Y10; Y10S; Y10S623/00; Y10S623/901; Y10S623/912; Y10S623/914
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
29 words
A method for fabricating an implantable device, the method comprising: fabricating an approximate replica of bone by sequentially solidifying adjoining, cross-sectional intervals of a fluid material along an axis.
Claim 2
Independent Claim
29 words
A method for fabricating an implantable device, the method comprising: fabricating an approximate replica of bone by sequentially solidifying adjoining, cross-sectional intervals of a fluid material along an axis.
Claim 3
Dependent Claim
65 words
A method in accordance with claim 1 wherein a design data base is first generated by scanning at least a portion of an animal's body using imaging techniques to generate a design data base of measurement data representing size and shape of the bone in a three dimensional coordinate system and then fabricating said replica in correspondence with the data in said design data base.
Claim 4
Dependent Claim
19 words
A method in accordance with claim 2 wherein the step of solidifying a fluid material comprises bonding ceramic particles.
Claim 5
Dependent Claim
34 words
A method in accordance with claim 2 wherein the scanning step comprises generating the data base by scanning a body part of a healthy individual animal and archiving the data base for subsequent use.
Claim 6
Dependent Claim
33 words
A method in accordance with claim 4 wherein the method further comprises modifying the data base to make selected changes in the size and shape of the bone represented by the data base.
Claim 7
Dependent Claim
21 words
A method in accordance with claim 1 wherein the step of solidifying a fluid material comprises bonding a photo-active polymeric material.
Claim 8
Dependent Claim
19 words
A method in accordance with claim 1 wherein the step of solidifying a fluid material comprises sintering ceramic particles.
Claim 9
Dependent Claim
30 words
A method in accordance with claim 1 wherein the step of solidifying a fluid material comprises bonding particles a first ceramic material together with particles of a second ceramic material.
Claim 10
Dependent Claim
21 words
A method in accordance with claim 1 wherein the step of solidifying fluid material comprises cementing particles together with a polymer.
Claim 11
Dependent Claim
43 words
A method in accordance with claim 1 wherein the fluid material comprises ceramic particles suspended in a liquid monomer and wherein the monomer is polymerized to form a solid polymer network and wherein at least a part of the polymer is then removed.
Claim 12
Dependent Claim
29 words
A method in accordance with claim 1 wherein the fluid material comprises ceramic particles and wherein the solidified replica is then reacted with an agent to change its composition.
Claim 13
Dependent Claim
11 words
A customized implantable device prepared by the method of claim 1.
Claim 14
Dependent Claim
11 words
A customized implantable device prepared by the method of claim 2.
References Cited (Backward Citations)
US4936862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |