US6090996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implant matrix
Assignee: Collagen Matrix Inc
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Filing: 1997-08-04
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Granted: 2000-07-18
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Expires: 2017-08-04
Abstract
Abstract An implant which includes a porous matrix sheet made of a biopolymeric material which is biocompatible and bioresorbable. The porous matrix sheet has at least one portion spaced from and overlapping another portion of the matrix sheet, and has a density ranging from about 0.05 g/cm 3 to about 1.3 g/cm 3 , a pore size ranging from about 0.1 μm to about 1,500 μm, and a spacing between overlapping portions of the matrix sheet ranging from about 0.1 μm to about 2,000 μm.
Inventors
- 👤 Shu-Tung Li
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:50
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/14; A61L31/148; A61L31/04; A61L31/043; A61L31/044; A61L31/146; A61B; A61B17/00; A61B17/00234; A61B17/0057; A61B17/11; A61B2017/00004
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
165 words
An implant comprising a porous matrix sheet made of biocompatible and bioresorbable biopolymeric material, said matrix sheet having at least one portion spaced from and overlapping another portion of said matrix sheet; wherein said implant having a density ranging from about 0.05 g/cm 3 to about 1.3 g/cm 3 , a pore size ranging from about 0.1 μm to about 1,500 μm, and a spacing between overlapping portions of said matrix sheet ranging from about 0.1 μm to about 2,000 μm, and, upon absorption of a fluid, is expandable geometrically and directionally and has a volume expansion rate ranging from about 2 cm 3 /cm 3 to about 100 cm 3 /cm 3 , and, in the expanded state, has a density ranging from about 0.01 g/cm 3 to about 0.5 g/cm 3 , a pore size ranging from about 10 μm to about 2,000 μm, and a spacing between overlapping portions of said matrix sheet ranging from about 10 μm to about 5,000 μm.
Claim 2
Dependent Claim
165 words
An implant comprising a porous matrix sheet made of biocompatible and bioresorbable biopolymeric material, said matrix sheet having at least one portion spaced from and overlapping another portion of said matrix sheet; wherein said implant having a density ranging from about 0.05 g/cm 3 to about 1.3 g/cm 3 , a pore size ranging from about 0.1 μm to about 1,500 μm, and a spacing between overlapping portions of said matrix sheet ranging from about 0.1 μm to about 2,000 μm, and, upon absorption of a fluid, is expandable geometrically and directionally and has a volume expansion rate ranging from about 2 cm 3 /cm 3 to about 100 cm 3 /cm 3 , and, in the expanded state, has a density ranging from about 0.01 g/cm 3 to about 0.5 g/cm 3 , a pore size ranging from about 10 μm to about 2,000 μm, and a spacing between overlapping portions of said matrix sheet ranging from about 10 μm to about 5,000 μm.
Claim 3
Dependent Claim
36 words
The implant of claim 1, wherein said implant, upon absorption of a fluid, is expandable having a volume expansion rate ranging from about 4 cm 3 /cm 3 to about 80 cm 3 /cm 3 .
Claim 4
Dependent Claim
16 words
The implant of claim 2, wherein said implant is radially expandable upon absorption of a fluid.
Claim 5
Dependent Claim
16 words
The implant of claim 2, wherein said implant is longitudinally expandable upon absorption of a fluid.
Claim 6
Dependent Claim
16 words
The implant of claim 4, wherein said implant is radially expandable upon absorption of a fluid.
Claim 7
Dependent Claim
21 words
The implant of claim 1, wherein said matrix sheet is spirally rolled so that said implant has a generally cylindrical shape.
Claim 8
Dependent Claim
36 words
The implant of claim 6, wherein said implant, upon absorption of a fluid, is expandable having a volume expansion rate ranging from about 4 cm 3 /cm 3 to about 80 cm 3 /cm 3 .
Claim 9
Dependent Claim
16 words
The implant of claim 7, wherein said implant is radially expandable upon absorption of a fluid.
Claim 10
Dependent Claim
16 words
The implant of claim 7, wherein said implant is longitudinally expandable upon absorption of a fluid.
Claim 11
Dependent Claim
16 words
The implant of claim 9, wherein said implant is radially expandable upon absorption of a fluid.
Claim 12
Dependent Claim
26 words
The implant of claim 1, wherein said matrix sheet is sinusoidally folded so that said implant is generally shaped as a cylinder or as a parallelepiped.
Claim 13
Dependent Claim
36 words
The implant of claim 11, wherein said implant, upon absorption of a fluid, is expandable having a volume expansion rate ranging from about 4 cm 3 /cm 3 to about 80 cm 3 /cm 3 .
Claim 14
Dependent Claim
16 words
The implant of claim 12, wherein said implant is radially expandable upon absorption of a fluid.
Claim 15
Dependent Claim
16 words
The implant of claim 12, wherein said implant is longitudinally expandable upon absorption of a fluid.
Claim 16
Dependent Claim
16 words
The implant of claim 14, wherein said implant is radially expandable upon absorption of a fluid.
Claim 17
Dependent Claim
11 words
The implant of claim 6, wherein said biopolymeric material is collagen.
Claim 18
Dependent Claim
36 words
The implant of claim 16, wherein said implant, upon absorption of a fluid, is expandable having a volume expansion rate ranging from about 4 cm 3 /cm 3 to about 80 cm 3 /cm 3 .
Claim 19
Dependent Claim
16 words
The implant of claim 17, wherein said implant is radially expandable upon absorption of a fluid.
Claim 20
Dependent Claim
16 words
The implant of claim 17, wherein said implant is longitudinally expandable upon absorption of a fluid.
Claim 21
Dependent Claim
16 words
The implant of claim 19, wherein said implant is radially expandable upon absorption of a fluid.
Claim 22
Dependent Claim
11 words
The implant of claim 11, wherein said biopolymeric material is collagen.
Claim 23
Dependent Claim
36 words
The implant of claim 21, wherein said implant, upon absorption of a fluid, is expandable having a volume expansion rate ranging from about 4 cm 3 /cm 3 to about 80 cm 3 /cm 3 .
Claim 24
Dependent Claim
16 words
The implant of claim 22, wherein said implant is radially expandable upon absorption of a fluid.
Claim 25
Dependent Claim
16 words
The implant of claim 22, wherein said implant is longitudinally expandable upon absorption of a fluid.
Claim 26
Dependent Claim
16 words
The implant of claim 24, wherein said implant is radially expandable upon absorption of a fluid.
Claim 27
Dependent Claim
11 words
The implant of claim 1, wherein said biopolymeric material is collagen.
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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) | 2003-07-18 | 2004-01-17 | 2004-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-18 | 2008-01-17 | 2008-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-18 | 2012-01-17 | 2012-07-18 | $7700.00 | Window Closed / Lapsed |