IP Library Granted Patent US 8,697,118
Granted Patent B2
US 8,697,118 · App. 13/622,690 · Granted Apr 15, 2014

Stabilizers for hemostatic products

Inventors: Curtis E. Olson (St. Paul, MN); Philip A. Messina (Woodbury, MN)
Assignee: St. Teresa Medical, Inc.
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Quick Facts
Patent No.
US 8,697,118
App. No.
13/622,690
Granted
Apr 15, 2014
Kind
B2
Abstract

A hemostatic product that includes a dextran support, at least one hemostatic agent and at least one hemostatic agent stabilizer. The at least one hemostatic agent is selected from the group consisting of thrombin and fibrinogen. The at least one hemostatic agent is associated with the dextran support. The at least one hemostatic agent stabilizer is associated with the at least one hemostatic agent.

Claims (13)

1. A hemostatic product comprising:

a dextran support;

a hemostatic agent stabilizer mixture comprising sucrose and dextran; and

a hemostatic mixture comprising the hemostatic agent stabilizer mixture and at least one hemostatic agent selected from the group consisting of thrombin and fibrinogen, wherein the hemostatic mixture is applied to the dextran support.

2. The hemostatic product of claim 1 , wherein the hemostatic agent stabilizer mixture is provided at a concentration of up to about 5 percent by weight of the hemostatic product.

3. The hemostatic product of claim 1 , and further comprising a solubility enhancing agent added to the hemostatic agent stabilizer mixture.

4. The hemostatic product of claim 3 , wherein the solubility enhancing agent comprises at least one detergent.

5. The hemostatic product of claim 3 , wherein the solubility enhancing agent is provided at a concentration of up to about 1 percent by weight of the hemostatic product.

6. The hemostatic product of claim 1 , wherein the hemostatic product does not exhibit degradation that is visible without magnification when maintained at a temperature of less than about 120° F. for at least about 2 years.

7. The hemostatic product of claim 1 , wherein the dextran support comprises a plurality of electrospun dextran fibers.

8. The hemostatic product of claim 1 , wherein the hemostatic mixture is applied to the dextran support so that the fibrinogen is placed on the dextran support at a concentration of between about 20 and 60 milligrams per square centimeter of the dextran support, wherein the hemostatic mixture is applied to the dextran support so that the thrombin is placed on the dextran support at a concentration of between about 2 and 200 NIH Units per square centimeter of the dextran support, or wherein the hemostatic mixture is applied to the dextran support so that the thrombin and fibrinogen are placed on the dextran support in a substantially uniform manner.

9. The hemostatic product of claim 1 , wherein the thrombin is salmon thrombin, wherein the fibrinogen is salmon fibrinogen and wherein the thrombin and the fibrinogen are in particulate form.

10. The hemostatic product of claim 1 , wherein the hemostatic product further comprises a support material that is associated with the dextran support, wherein the support material is selected from the group consisting of gauze, compressed electrospun dextran, polyglycolytic acid polymers, polylactic acid polymers, caprolactone polymers, charged nylon and combinations thereof.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 19, 2012
From: OLSON, CURTIS E.; MESSINA, PHILIP A.
To: ST. TERESA MEDICAL, INC.
Reel/Frame 028990/0637 →
Continuity (6)
Provisional Application 61548258 · Oct 18, 2011
Provisional Application 61548260 · Oct 18, 2011
Provisional Application 61548261 · Oct 18, 2011
Provisional Application 61585303 · Jan 11, 2012
Provisional Application 61589060 · Jan 20, 2012
Related Publication 20130095165A1 · Apr 18, 2013