US5380589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biotextured surfaces
Assignee: Wisconsin Alumni Research Foundation
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Filing: 1993-04-19
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Granted: 1995-01-10
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Expires: 2013-04-19
Abstract
Abstract Synthetic biotextured surfaces and methods to produce the surface are disclosed. The surfaces mimic the topography of a surface of a naturally occurring sub-endothelial or sub-epithelial extracellular matrix. This is achieved by removing a cell layer from the naturally occurring extracellular matrix substrate, covering the extracellular matrix with a casting material, and allowing the casting material to harden. One then removes extracellular matrix from the casting material to uncover a negative core, and then uses the negative core to cast the replica material. By removing the negative core from the replica material one then creates the synthetic surface.
Inventors
- 👤 Steven L. Goodman
- 👤 Ralph M. Albrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; A61F2/062; A61F2/0077; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1397; Y10T428/24; Y10T428/24033; Y10T428/24041
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
54 words
An article having an artificial surface in the form of a casting which essentially replicates a portion of a peripheral surface of a mammalian sub-endothelial extracellular matrix or sub-epithelial extracellular matrix, wherein the article was formed by using a molding core that has a surface that is an inverse representation of the peripheral surface.
Claim 2
Dependent Claim
54 words
An article having an artificial surface in the form of a casting which essentially replicates a portion of a peripheral surface of a mammalian sub-endothelial extracellular matrix or sub-epithelial extracellular matrix, wherein the article was formed by using a molding core that has a surface that is an inverse representation of the peripheral surface.
Claim 3
Dependent Claim
13 words
The article of claim 1, wherein said matrix is a sub-endothelial extracellular matrix.
Claim 4
Dependent Claim
13 words
The article of claim 1, wherein the artificial surface is made of plastic.
Claim 5
Dependent Claim
11 words
The article of claim 1, wherein the article is a conduit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-01-09 | 1998-07-11 | 1999-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-09 | 2002-07-11 | 2003-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-09 | 2006-07-11 | 2007-01-10 | $7700.00 | Window Closed / Lapsed |