US4752294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Element for controlled growth into surgically intervened areas
Assignee: SUNSTAR LAUSANNE SA
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Filing: 1985-02-26
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Granted: 1988-06-21
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Expires: 2005-02-26
Abstract
Abstract An element for control growth of tissue into surgically intervened areas, e.g. for passages through skin or mucous membrane, or for controlled growth of tissue around surgically treated teeth which have lost part of the supporting tissue thereof, forms one or more undercut cavities (12) which are each available through one or more openings (16) on the outside of the element. The surfaces of the element which are exposed to surrounding tissue consist of or are coated with a biocompatible material.
Inventors
- 👤 Dan Lundgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:28
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61C; A61C8/00; A61C8/0012; A61F2/30; A61F2/30767; A61F2/30771; A61C8/0013; A61F2/0077; A61F2002/0086; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30159; A61F2002/30172; A61F2002/30795; A61F2002/30807; A61F2002/30808; A61F2002/3093; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0052; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00389; A61F2310/00395; A61F2310/00407
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
An element for guided tissue regeneration comprising a slot having a minimum width of 30 micrometers and extending substantially along the surface of the skin by implantation of the element in the intended position thereof, and at least one undercut cavity available from the outside of the element through said slot and extending at either side of the slot, said cavity having a minimum depth of 30 micrometers, the surfaces of the element to be exposed to surrounding tissue comprising a biocompatible material.
Claim 2
Dependent Claim
83 words
An element for guided tissue regeneration comprising a slot having a minimum width of 30 micrometers and extending substantially along the surface of the skin by implantation of the element in the intended position thereof, and at least one undercut cavity available from the outside of the element through said slot and extending at either side of the slot, said cavity having a minimum depth of 30 micrometers, the surfaces of the element to be exposed to surrounding tissue comprising a biocompatible material.
Claim 3
Dependent Claim
13 words
An element as in claim 1 having several cavities, adjacent cavities being interconnected.
Claim 4
Dependent Claim
12 words
An element as in claim 1 wherein the biocompatible material comprises titanium.
Claim 5
Dependent Claim
14 words
An element as in claims 1 wherein the biocompatible material comprises vacuum deposited titanium.
Claim 6
Dependent Claim
16 words
An element as in claim 1 wherein the cavity is bound by a perforated outer wall.
Claim 7
Dependent Claim
27 words
An element as in claim 1 wherein the element is tubular with the cavity available through openings in the outer and inner curved surface of the element.
Claim 8
Dependent Claim
43 words
An element as in claim 6 having first cavities which are available through openings in the outer curved surface, and second cavities which are available through openings in the inner curved surface, said first and second cavities being separated by a perforated wall.
Claim 9
Dependent Claim
12 words
An element as in claim 1 wherein the element is profiled externally.
References Cited (Backward Citations)
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Cited
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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) | 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 |