Patent US5466530A successfully refreshed from Google Patents.
US5466530A
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Biocompatible components fabricated from a substantially consolidated stock of material
Assignee: Biomet Manufacturing LLC
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Filing: 1993-01-21
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Granted: 1995-11-14
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Expires: 2013-01-21
Abstract
Abstract A method for forming biocompatible components from a stock of substantially completely consolidated material. The method includes the step of forming an incompletely consolidated stock from a powder. The substantially completely consolidated stock is then formed from the incompletely consolidated stock. Finally, the substantially completely consolidated stock is then machined to form the biocompatible component.
Inventors
- 👤 Garry L. England
- 👤 Joel C. Higgins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:27
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30721; A61F2/30734; A61F2/30767; B; B22; B22F; B22F3/00; B22F3/12; B22F3/14; B22F3/15; B22F7/00; B22F7/002; B29; B29C; B29C43/00; B29C43/006; B29C43/02; B29C43/10; B29C43/12; B29C43/14; B30; B30B; B30B11/00; B30B11/001; C; C23; C23C; C23C4/00; C23C4/18; A61F2/3094; A61F2/32; A61F2/36; A61F2/3662; A61F2/367; A61F2/38; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30065; A61F2210/00; A61F2210/0071; A61F2310/00; A61F2310/00389; A61F2310/00395; A61F2310/00407; A61F2310/00413; B22F2998/00; B22F2998/10; B22F2999/00; B29C2791/00; B29C2791/001; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/0658; B29K2023/0683; B29K2101/00; B29K2101/12; B29K2105/00; B29K2105/04; B29K2105/06; B29K2105/12; B29K2105/25; B29K2105/251; B29K2995/00; B29K2995/0037; B29K2995/0056; B29K2995/0089; B29L; B29L2031/00; B29L2031/753; B29L2031/7532; Y; Y10; Y10S; Y10S623/00; Y10S623/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
A biocompatible component resistant to wear fabricated from a substantially consolidated stock of material, said biocompatible component formed by the steps of: preparing said substantially consolidated stock from an ultra high molecular weight polyethylene powder by: (a) subjecting said powder to a cold isostatic pressure treatment thereby forming an incompletely consolidated stock from said powder, (b) subjecting said incompletely consolidated stock to a hot isostatic pressure treatment to form said substantially consolidated stock from said incompletely consolidated stock while controlling crystallinity so as to substantially avoid increasing the crystallinity of the substantially consolidated stock above that of the powder; and machining said substantially consolidated stock to form said biocompatible component.
Claim 2
Dependent Claim
110 words
A biocompatible component resistant to wear fabricated from a substantially consolidated stock of material, said biocompatible component formed by the steps of: preparing said substantially consolidated stock from an ultra high molecular weight polyethylene powder by: (a) subjecting said powder to a cold isostatic pressure treatment thereby forming an incompletely consolidated stock from said powder, (b) subjecting said incompletely consolidated stock to a hot isostatic pressure treatment to form said substantially consolidated stock from said incompletely consolidated stock while controlling crystallinity so as to substantially avoid increasing the crystallinity of the substantially consolidated stock above that of the powder; and machining said substantially consolidated stock to form said biocompatible component.
Claim 3
Dependent Claim
48 words
The biocompatible component according to claim 1, wherein said step of subjecting said powder to a cold isostatic pressure treatment includes the steps of: placing said powder into a first flexible container; and subjecting said first flexible container to a pressure sufficient to form said incompletely consolidated stock.
Claim 4
Dependent Claim
50 words
The biocompatible component according to claim 2, wherein said step of placing said powder into a first flexible container includes the steps of: placing said powder in a substantially cylindrical container formed from polyurethane. enclosing said substantially cylindrical container with a plug; and evacuating and sealing said substantially cylindrical container.
Claim 5
Dependent Claim
57 words
The biocompatible component according to claim 2, wherein said step of subjecting said incompletely consolidated stock to a hot isostatic pressure treatment includes the steps of: placing said incompletely consolidated stock into a second flexible container; and subjecting said second flexible container to a sufficient pressure and temperature so as to form said substantially completely consolidated stock.
Claim 6
Dependent Claim
52 words
The biocompatible component according to claim 4, wherein said step of placing said incompletely consolidated stock into a second flexible container includes the step of placing said incompletely consolidated stock in a foilized heat sealable container formed from a layer of aluminum foil, a polyester vapor barrier, and a heat sealable layer.
Claim 7
Dependent Claim
38 words
The biocompatible component according to claim 5, wherein said step of placing said incompletely consolidated stock into a second flexible container includes the steps of: substantially enclosing said second flexible container; and substantially evacuating said second flexible container.
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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) | 1998-11-13 | 1999-05-15 | 1999-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-13 | 2003-05-15 | 2003-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-13 | 2007-05-15 | 2007-11-14 | $7700.00 | Window Closed / Lapsed |