Hemostatic Agent and Method

• US 20080076722A1
• Filed: 09/26/2007
• Published: 03/27/2008
• Est. Priority Date: 09/27/2006
• Status: Active Grant

• Current Assignee: Hemostasis LLC (Baxter International Inc.)
• Original Assignee: Hemostasis LLC (Baxter International Inc.)
• Inventors: Roberts, Keith A., Zia, Majid, Spearman, Michael R., Burban, John Henry
• Granted Patent: US 8,623,842 B2
• Time in Patent Office: Days
• US Class Current: 514/23
• CPC Class Codes: A61F 13/0206 with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
• CPC Class Codes: A61F 13/0226 characterised by the support layer
• CPC Class Codes: A61F 13/0246 characterised by the skin-adhering layer
• CPC Class Codes: A61F 13/0259 characterised by the release liner covering the skin adhering layer
• CPC Class Codes: A61F 2013/00217 not adhering to the wound with wax A61F2013/00161
• CPC Class Codes: A61F 2013/00468 applying local pressure
• CPC Class Codes: A61F 2013/00472 with chemical means
• CPC Class Codes: A61K 31/70 Carbohydrates; Sugars; Derivatives thereof sorbitol A61K31/047
• CPC Class Codes: A61K 31/718 Starch or degraded starch, e.g. amylose, amylopectin
• CPC Class Codes: A61L 15/32 Proteins, polypeptides; Degradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin A61L15/225 takes precedence
• CPC Class Codes: A61L 15/425 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 15/44 Medicaments
• CPC Class Codes: A61L 2300/418 Agents promoting blood coagulation, blood-clotting agents, embolising agents
• CPC Class Codes: A61M 35/006 using sponges, foams, absorbent pads or swabs as spreading means
• CPC Class Codes: A61P 7/00 Drugs for disorders of the blood or the extracellular fluid

Abstract

One aspect of the invention is a method of treating a wound to clot blood. A sponge material is applied to the wound. The sponge comprises a starch having hemostatic properties and at least one binding agent. The sponge may further comprise a porous, flexible material.

Claims

1. A method of treating a wound to clot blood comprising:

applying particles of a pregelatinized starch to a bleeding wound.

2. A bandage, comprising:

an adhesive portion to attach the bandage to the skin of a patient;

a depressible plunger that may be depressed after the bandage has been applied to apply downward pressure on a wound wherein the depressible plunger may latch in the depressed position;

a sponge material attached to the plunger directly or indirectly comprising at least a hemostatic material.

3. A hemostatic bandage comprising:

a bandage support comprising at least a wound portion and at least first and second tab portions;

a hemostatic agent attached directly or indirectly to the wound portion;

an adhesive coating on at least a part of each of the first and second tab portions;

wherein the first and second tab portions are configured such that they will be in tension with the wound portion when attached to skin using the adhesive in such a manner so as to cause a force on the wound portion that is at least partially downward in the direction of the wound.

4. A hemostatic bandage comprising:

a bandage support comprising at least a wound portion and an adhesive portion;

an absorbent hemostatic pad material attached directly or indirectly to the wound portion;

wherein the adhesive portion allows the bandage support to be secured to skin; and

a tab in contact with the hemostatic pad material that prevents the hemostatic pad material from contacting a wound until the tab is moved.

5. A bandage, comprising:

a first material configured to hold a plurality of hemostatic particles; and

particles of a pregelatinized starch held by the first material.

6. The bandage of claim 5 further comprising:

particles of calcium chloride.