Hemostatic devices
AssigneeTeleflex Life Sciences Limited
InventorsDina Dubey, Denny Lo
Life of this patent
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Abstract
Hemostatic devices for promoting blood clotting can include a substrate (e.g., gauze, textile, sponge, sponge matrix, one or more fibers, etc.), a hemostatic material disposed thereon such as kaolin clay, and a binder material such as crosslinked calcium alginate with a high guluronate monomer molar percentage disposed on the substrate to substantially retain the hemostatic material material. When the device is used to treat a bleeding wound, at least a portion of the clay material comes into contact with blood to accelerate clotting. Moreover, when exposed to blood, the binder has low solubility and retains a majority of the clay material on the gauze. A bandage that can be applied to a bleeding wound to promote blood clotting includes a flexible substrate and a gauze substrate mounted thereon.
Claims11
A hemostatic device comprising:
- a gauze substrate;
- a hemostatic aluminosilicate;
- and
- a water-insoluble, crosslinkable, biocompatible, polymeric binder configured to immobilize the hemostatic aluminosilicate on the substrate such that the hemostatic aluminosilicate does not visibly separate from the substrate in the presence of water;
- wherein the hemostatic device is not saturated before use;
- wherein the binder resists dissolving in blood;
- wherein the device is configured such that when treating bleeding, application of the device is capable of causing blood to be absorbed into the gauze substrate and causing at least a portion of the hemostatic aluminosilicate to come into direct contact with blood to assist in accelerating clotting, but the device resists releasing the hemostatic material into a bleeding wound.
Dependencies are inferred from the claim text.