US5769883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biodegradable drug delivery vascular stent
Assignee: Boston Scientific Scimed Inc
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Filing: 1995-11-21
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Granted: 1998-06-23
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Expires: 2015-11-21
Abstract
Abstract A stent includes a main body of a generally tubular shape for insertion into a lumen of a vessel of a living being. The tubular main body includes a substantially biodegradable matrix having collagen IV and laminin that enclose voids within the matrix. The tubular main body also includes a biodegradable strengthening material in contact with the matrix to strengthen the matrix. The tubular main body is essentially saturated with drugs.
Inventors
- 👤 Paul J. Buscemi
- 👤 Elizabeth A. Stejskal
- 👤 II Donald F. Palme
- 👤 Lixiao Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:27
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61L; A61L31/00; A61L31/04; A61L31/041; A61L31/043; A61L31/044; A61L31/047; A61L31/14; A61L31/148; A61L31/16; A61F2/95; A61F2/958; A61F2210/00; A61F2210/0004; A61F2210/0014; A61F2210/0023; A61F2250/00; A61F2250/0058; A61F2250/0067; A61F2250/0068; A61L2300/00; A61L2300/40; A61L2300/42; A61L2300/60; A61L2300/602; A61L2300/604; A61L2300/606; A61L2300/62; A61L2300/622; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
A stent having a generally tubular main body for insertion into a lumen of a vessel of a living being wherein the tubular main body comprises a substantially biodegradable matrix that includes collagen IV and laminin that enclose voids within the matrix, and a biodegradable strengthening material composed of polylactic acid in contact with the matrix to strengthen the matrix, the tubular main body being essentially saturated with drugs and said tubular main body being expandable within a lumen of a vessel of a living being.
Claim 2
Dependent Claim
86 words
A stent having a generally tubular main body for insertion into a lumen of a vessel of a living being wherein the tubular main body comprises a substantially biodegradable matrix that includes collagen IV and laminin that enclose voids within the matrix, and a biodegradable strengthening material composed of polylactic acid in contact with the matrix to strengthen the matrix, the tubular main body being essentially saturated with drugs and said tubular main body being expandable within a lumen of a vessel of a living being.
Claim 3
Dependent Claim
16 words
The stent of claim 1 wherein the strengthening material includes particles dispersed within the biodegradable matrix.
Claim 4
Dependent Claim
16 words
The stent of claim 1 wherein the strengthening material includes a layer attached to the matrix.
Claim 5
Dependent Claim
13 words
The stent of claim 1 wherein the biodegradable matrix further includes a glycosaminoglucuronan.
Claim 6
Dependent Claim
10 words
The stent of claim 4 wherein the glycosaminoglucuronan includes heparin.
Claim 7
Dependent Claim
71 words
A stent having a generally tubular main body for insertion into a lumen of a vessel of a living being wherein the tubular main body comprises a substantially biodegradable matrix that includes collagen IV and laminin that enclose voids within the matrix, and a biodegradable strengthening material in contact with the matrix to strengthen the matrix, the tubular main body being essentially saturated with drugs, wherein the drugs include microencapsulated drugs.
Claim 8
Dependent Claim
71 words
A stent having a generally tubular main body for insertion into a lumen of a vessel of a living being wherein the tubular main body comprises a substantially biodegradable matrix that includes collagen IV and laminin that enclose voids within the matrix, and a biodegradable strengthening material in contact with the matrix to strengthen the matrix, the tubular main body being essentially saturated with drugs, wherein the drugs include microencapsulated drugs.
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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) | 2001-06-22 | 2001-12-22 | 2002-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-22 | 2005-12-22 | 2006-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-22 | 2009-12-22 | 2010-06-23 | $7700.00 | Window Closed / Lapsed |