US4800639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a metal bone implant
Assignee: Sulzer AG
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Filing: 1987-06-12
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Granted: 1989-01-31
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Expires: 2007-06-12
Abstract
Abstract The metal bone implant is constructed with thin sheets of superplastic material which are deformed into irregular contours. The sheets are welded to the solid base element of the implant and thereafter deformed outwardly under fluid presure to an irregular shape.
Inventors
- 👤 Otto Frey
- 👤 Manfred Semlitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:52
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30907; A61F2/32; A61F2/36; A61F2/3662; A61F2/367; A61F2/3094; A61F2002/30001; A61F2002/30316; A61F2002/30329; A61F2002/30451; A61F2002/30535; A61F2002/30581; A61F2002/30593; A61F2002/30599; A61F2002/30604; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2002/30975; A61F2002/3678; A61F2002/368; A61F2220/00; A61F2220/0025; A61F2220/0058; A61F2250/00; A61F2250/0058; A61F2250/006; A61F2250/0063; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49826; Y10T29/49861
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A method of making a bone implant comprising the steps of securing at least two sheet metal plates on a proximal end of a metal base element leaving a distal end of the metal base element exposed; and deforming each sheet metal plate outwardly of said base element in a mold to form a hollow cavity therebetween and an irregular surface on the plates.
Claim 2
Independent Claim
64 words
A method of making a bone implant comprising the steps of securing at least two sheet metal plates on a proximal end of a metal base element leaving a distal end of the metal base element exposed; and deforming each sheet metal plate outwardly of said base element in a mold to form a hollow cavity therebetween and an irregular surface on the plates.
Claim 3
Dependent Claim
32 words
A method as set forth in claim 1 wherein said step of deforming the plates includes forcing a fluid pressure medium between the base element and the plates to deform the plates.
Claim 4
Dependent Claim
34 words
A method as set forth in claim 1 which includes the steps of securing two sheet metal plates on opposite sides of the base element and deforming each plate outwardly of the base element.
Claim 5
Dependent Claim
26 words
A method as set forth in claim 3 wherein a fluid pressure medium is forced between each plate and the base element to deform each plate.
Claim 6
Independent Claim
64 words
A method of making a bone implant comprising the steps of securing a pair of metal sheets to at least one side of a base element in a gas-tight manner; and forcing a fluid pressure medium between the sheets and the base element to deform the sheets outwardly of the base element to define a hollow cavity between said sheets and said base element.
Claim 7
Independent Claim
64 words
A method of making a bone implant comprising the steps of securing a pair of metal sheets to at least one side of a base element in a gas-tight manner; and forcing a fluid pressure medium between the sheets and the base element to deform the sheets outwardly of the base element to define a hollow cavity between said sheets and said base element.
Claim 8
Dependent Claim
33 words
A method as set forth in claim 5 which further includes the step of deforming the sheets against a mold having an irregular surface to deform the sheets into a corresponding irregular shape.
Claim 9
Dependent Claim
20 words
A method as set forth in claim 5 wherein the sheets are made of superplastic material and are plastically deformed.
References Cited (Backward Citations)
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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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |