US5334216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hemostatic plug
Assignee: Boston Scientific Scimed Inc
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Filing: 1992-12-10
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Granted: 1994-08-02
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Expires: 2012-12-10
Abstract
Abstract A method of making a hemostatic plug for placement at a site where hemostatic treatment is indicated. The method comprises rolling a sheet of a hemostatic material a plurality of turns onto a generally cylindrical forming tool to thereby produce a rolled hemostatic plug having an opening therethrough along its longitudinal axis. In addition to employing one sheet of hemostatic material having a single density to form a plug, two sheets of hemostatic material having different densities can be rolled in tandem to each other on the forming tool, with one sheet overlapping an exposed wedge portion of the other sheet. The plugs thus formed can be longitudinally compressed if subsequent longitudinal expansion is desired. A typical placement site for which the plug is preferably employed is a puncture wound wherein an entry penetration of an artery and a tissue channel leading thereto are present.
Inventors
- 👤 Claude A. Vidal
- 👤 Russel J. Redmond
- 👤 Joshua Makower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:11
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/0057; A61B2017/00646; A61B2017/00654
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
72 words
A hemostatic plug for placement in a wound site where hemostatic treatment is indicated, the plug comprising at least one sheet of a hemostatic material of a predetermined length dimension, said sheet being rolled upon itself a plurality of times to create a tubular structure, said tubular structure being of a compressed length less than said predetermined length dimension, and having an opening along a longitudinal axis over its entire compressed length.
Claim 2
Dependent Claim
72 words
A hemostatic plug for placement in a wound site where hemostatic treatment is indicated, the plug comprising at least one sheet of a hemostatic material of a predetermined length dimension, said sheet being rolled upon itself a plurality of times to create a tubular structure, said tubular structure being of a compressed length less than said predetermined length dimension, and having an opening along a longitudinal axis over its entire compressed length.
Claim 3
Dependent Claim
29 words
A hemostatic plug as claimed in claim 1 wherein one end of said tubular structure is tapered at an angle of from about 10 degrees to about 45 degrees.
Claim 4
Dependent Claim
28 words
A hemostatic plug as claimed in claim 1 wherein the hemostatic material is chosen from the group consisting of collagen, hemostatic gelatin, modified polyglycolic acid-based material and thrombin.
Claim 5
Dependent Claim
14 words
A hemostatic plug as claimed in claim 3 wherein the hemostatic material is collagen.
Claim 6
Dependent Claim
24 words
A hemostatic plug as claimed in claim 1 wherein the plug is constructed of a single sheet of hemostatic material having a single density.
Claim 7
Dependent Claim
27 words
A hemostatic plug as claimed in claim 5 wherein the hemostatic material is collagen having a density from about 0.032 to about 0.042 gram per square inch.
Claim 8
Dependent Claim
24 words
A hemostatic plug as claimed in claim 6 wherein the collagen has a density from about 0.037 to about 0.038 gram per square inch.
Claim 9
Dependent Claim
79 words
A hemostatic plug for placement at a site where hemostatic treatment is indicated, the plug comprising a first rolled sheet of hemostatic material rolled upon itself a plurality of times and having a first density, and a second rolled sheet of hemostatic material rolled upon itself a plurality of times and having a second density, with said first and second rolled sheets disposed in tandem to each other and having an opening along a longitudinal axis for its entirety.
Claim 10
Dependent Claim
79 words
A hemostatic plug for placement at a site where hemostatic treatment is indicated, the plug comprising a first rolled sheet of hemostatic material rolled upon itself a plurality of times and having a first density, and a second rolled sheet of hemostatic material rolled upon itself a plurality of times and having a second density, with said first and second rolled sheets disposed in tandem to each other and having an opening along a longitudinal axis for its entirety.
Claim 11
Dependent Claim
24 words
A hemostatic plug as claimed in claim 8 wherein the hemostatic material of the first rolled sheet and the second rolled sheet is collagen.
Claim 12
Dependent Claim
52 words
A hemostatic plug as claimed in claim 9 wherein the density of the collagen of the first rolled sheet is from about 0.032 to about 0.042 gram per square inch, and the density of the collagen of the second rolled sheet is from about 0.095 to about 0.115 gram per square inch.
Claim 13
Dependent Claim
49 words
A hemostatic plug as claimed in claim 10 wherein the density of the collagen of the first rolled sheet is from about 0.037 to about 0.038 gram per square inch, and the density of the second rolled sheet is from about 0.105 to about 0.110 gram per square inch.
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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) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |