US4752295A
Expired / Lapsed
US
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Metal bone implant
Assignee: Sulzer AG
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Filing: 1986-01-28
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Granted: 1988-06-21
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Expires: 2006-01-28
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 pressure to an irregular shape.
Inventors
- 👤 Otto Frey
- 👤 Manfred Semlitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:20
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: 24
Claim 1
Independent Claim
44 words
A biocompatible metal bone implant comprising a biocompatible metal base element; and at least two biocompatible sheet metal walls secured to said base element to define a hollow body of irregular geometric shape with a cavity between said base element and each respective wall.
Claim 2
Dependent Claim
44 words
A biocompatible metal bone implant comprising a biocompatible metal base element; and at least two biocompatible sheet metal walls secured to said base element to define a hollow body of irregular geometric shape with a cavity between said base element and each respective wall.
Claim 3
Dependent Claim
20 words
A biocompatible metal bone implant as set forth in claim 1 wherein said walls are made of a superplastic material.
Claim 4
Dependent Claim
23 words
A biocompatible metal bone implant as set forth in claim 1 further comprising an elastic material of stable volume filling said hollow body.
Claim 5
Dependent Claim
25 words
A biocompatible metal bone implant as set forth in claim 1 wherein each wall includes at least a pair of sheets disposed in layered fashion.
Claim 6
Dependent Claim
23 words
A biocompatible metal bone implant as set forth in claim 4 wherein each sheet has a deformation resistance different from the other sheets.
Claim 7
Dependent Claim
22 words
A biocompatible metal bone implant as set forth in claim 1 wherein each wall has a thickness of at least one millimeter.
Claim 8
Dependent Claim
21 words
A biocompatible metal bone implant as set forth in claim 1 wherein said walls are made of as alpha/beta titanium alloy.
Claim 9
Dependent Claim
68 words
A biocompatible metal bone implant comprising a biocompatible shank extending from a distal end to a proximal end; and a plurality of biocompatible sheet metal walls secured to said shank to define a hollow body with said shank at said proximal end, said walls having an irregular geometric shape with at least two walls spaced from opposite sides of said shank to define a pair of cavities therewith.
Claim 10
Dependent Claim
68 words
A biocompatible metal bone implant comprising a biocompatible shank extending from a distal end to a proximal end; and a plurality of biocompatible sheet metal walls secured to said shank to define a hollow body with said shank at said proximal end, said walls having an irregular geometric shape with at least two walls spaced from opposite sides of said shank to define a pair of cavities therewith.
Claim 11
Dependent Claim
37 words
A biocompatible metal bone implant as set forth in claim 8 wherein each wall is formed of two plates, the outer of said two plates having a lesser deformation resistance than the inner of said two plates.
Claim 12
Dependent Claim
19 words
A biocompatible metal bone implant as set forth in claim 8 wherein said walls define a closed hollow body.
Claim 13
Dependent Claim
19 words
A biocompatible metal bone implant as set forth in claim 8 wherein said walls define an open hollow body.
Claim 14
Dependent Claim
36 words
A biocompatible metal bone implant as set forth in claim 8 wherein said shank has a plate-like base element at said proximal end and each wall is secured to an opposite side of said base element.
Claim 15
Dependent Claim
17 words
A biocompatible metal bone implant as set forth in claim 12 wherein said hollow body is impermeable.
Claim 16
Dependent Claim
21 words
A biocompatible metal bone implant as set forth in claim 12 wherein each wall is peripherally welded to said base element.
Claim 17
Dependent Claim
55 words
A biocompatible metal bone implant comprising a biocompatible anchoring shank; a biocompatible metal base element extending from said shank; and at least two sheet biocompatible metal walls secured to opposite sides of said base element to define a hollow body of irregular geometric shape with a cavity between said base element and each respective wall.
Claim 18
Dependent Claim
55 words
A biocompatible metal bone implant comprising a biocompatible anchoring shank; a biocompatible metal base element extending from said shank; and at least two sheet biocompatible metal walls secured to opposite sides of said base element to define a hollow body of irregular geometric shape with a cavity between said base element and each respective wall.
Claim 19
Dependent Claim
33 words
A biocompatible metal bone implant as set forth in claim 15 wherein said walls define a closed body and which further comprises an elastic material of stable volume filling said closed hollow body.
Claim 20
Dependent Claim
25 words
A biocompatible metal bone implant as set forth in claim 15 wherein each wall includes at least a pair of sheets disposed in layered fashion.
Claim 21
Dependent Claim
43 words
A biocompatible metal bone implant comprising a biocompatible metal base element; and at least two biocompatible sheet metal walls secured to said base element to define a hollow body of irregular geometric shape and to define an impermeable cavity with said base element.
Claim 22
Dependent Claim
43 words
A biocompatible metal bone implant comprising a biocompatible metal base element; and at least two biocompatible sheet metal walls secured to said base element to define a hollow body of irregular geometric shape and to define an impermeable cavity with said base element.
Claim 23
Dependent Claim
70 words
A biocompatible metal bone implant comprising a biocompatible shank extending from a distal end to a proximal end and including an enlarged neck at said proximal end and a shoulder intermediate said ends; and a plurality of biocompatible sheet metal walls secured to said shank between said shoulder and said neck to define a hollow body with said shank at said proximal end, said walls having an irregular geometric shape.
Claim 24
Dependent Claim
70 words
A biocompatible metal bone implant comprising a biocompatible shank extending from a distal end to a proximal end and including an enlarged neck at said proximal end and a shoulder intermediate said ends; and a plurality of biocompatible sheet metal walls secured to said shank between said shoulder and said neck to define a hollow body with said shank at said proximal end, said walls having an irregular geometric shape.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |