US5219328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrin sealant delivery method
Assignee: Artivion Inc
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Filing: 1990-01-03
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Granted: 1993-06-15
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Expires: 2010-01-03
Abstract
Abstract The present invention relates to a method for the formulation of fibrin sealant in a single delivery system. The method involves mixing a fibrinogen/Factor XIII precipitate solution with thrombin under conditions such that thrombin clotting activity is inhibited and said mixture is applied to a body site under conditions which activate the thrombin to convert fibrinogen into fibrin sealant. A single device, syringe or container, can be used to apply the fibrin sealant formulation.
Inventors
- 👤 Brenda S. Morse
- 👤 A. Denise Turner
- 👤 Robert T. McNally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:24
CPC Classifications
A; A61; A61L; A61L24/00; A61L24/04; A61L24/10; A61L24/106; A61B; A61B17/00; A61B17/00491; A61P; A61P7/00; A61P7/04; A61B2017/00495; A61B17/22; A61B2017/22082
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
A method of effecting the formation of fibrin sealant at a body site comprising: i) mixing, in a container means, an aqueous solution comprising fibrinogen, Factor XIII and mature thrombin under conditions such that thrombin clotting activity is inhibited; and ii) applying a preparation resulting from step (i) to said body site under conditions such that thrombin clotting activity is restored and said fibrin sealant is formed; wherein step (i) is carried out at a pH of less than 5.5, whereby thrombin clotting activity is inhibited.
Claim 2
Independent Claim
86 words
A method of effecting the formation of fibrin sealant at a body site comprising: i) mixing, in a container means, an aqueous solution comprising fibrinogen, Factor XIII and mature thrombin under conditions such that thrombin clotting activity is inhibited; and ii) applying a preparation resulting from step (i) to said body site under conditions such that thrombin clotting activity is restored and said fibrin sealant is formed; wherein step (i) is carried out at a pH of less than 5.5, whereby thrombin clotting activity is inhibited.
Claim 3
Dependent Claim
28 words
The method according to claim 1 wherein, in step (ii), the pH of said preparation resulting from step (i) is increased such that thrombin clotting activity is restored.
Claim 4
Dependent Claim
34 words
The method according to claim 2 wherein the pH of said preparation resulting from step (i) is increased upon contact of said preparation with body fluids of said patient present at said body site.
Claim 5
Dependent Claim
31 words
The method according to claim 2 wherein, in step (ii), the pH of said preparation resulting from step (i) is increased upon contact with a buffered capable of increasing the pH.
Claim 6
Independent Claim
90 words
A method of effecting the formation of fibrin sealant at a body site comprising: i) mixing, in a container means, an aqueous solution comprising fibrinogen, Factor XIII and mature thrombin under conditions such that thrombin clotting activity is inhibited; and ii) applying a preparation resulting from step (i) to said body site under conditions such that thrombin clotting activity is restored and said fibrin sealant is formed; wherein said solution of step (i) includes an amount of a photosensitive inhibitor of thrombin clotting activity sufficient to inhibit thrombin clotting activity.
Claim 7
Independent Claim
90 words
A method of effecting the formation of fibrin sealant at a body site comprising: i) mixing, in a container means, an aqueous solution comprising fibrinogen, Factor XIII and mature thrombin under conditions such that thrombin clotting activity is inhibited; and ii) applying a preparation resulting from step (i) to said body site under conditions such that thrombin clotting activity is restored and said fibrin sealant is formed; wherein said solution of step (i) includes an amount of a photosensitive inhibitor of thrombin clotting activity sufficient to inhibit thrombin clotting activity.
Claim 8
Dependent Claim
34 words
The method according to claim 5 wherein, in step (ii), said preparation resulting from step (i) is irradiated with light of a wavelength that inactivates said photosensitive inhibitor, whereby thrombin clotting activity is restored.
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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) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |