Article coatings including oligomerized polyphenol layer and biological methods of use
Embodiments of the disclosure include coatings comprising an oligomerized polyphenol layer. The oligomerized polyphenol layer can be used as an intermediate coated layer on a medical device that hydrogen bonds to a synthetic or natural polymer, which in turn can be used as a top coat or further associated with another coated layer. The multilayered coatings can provide properties such as hemocompatibility or lubricity. In other embodiments, the oligomerized polyphenol layer is used on a medical device as a hemostatic layer configured to contact blood and promote coagulation. The oligomerized polyphenol layer can also be used on the inner surface (e.g., inner diameter) of a medical device to prevent bacterial adherence. The oligomerized polyphenol layer can also be used on the surface of a in vitro diagnostic article, or a cell culture device to, promote adsorption of a biological molecule.
1. A medical device comprising a water-insoluble hemostatic coating comprising an immobilized oligomerized polyphenol, the device configured so the immobilized oligomerized polyphenol comes in contact with a body fluid, and wherein the hemostatic coating has a thickness of less than 100 nm.
2. The medical device of claim 1 selected from the group consisting of vascular implants and grafts, wound dressings and wound management device, hemostatic barriers, occlusion articles, mesh and hernia plugs, patches, and uterine bleeding patches.
3. A method for promoting clotting at a target location in or on the body comprising placing the medical device of claim 1 in or on a target location in the body, wherein the coating contacts body fluid and promotes clotting at the target location.
4. The method of claim 3 wherein the coating promotes fibrinogen absorption.
5. A medical device comprising an inner surface comprising a water-insoluble coating, the coating comprising an immobilized oligomerized polyphenol, wherein the oligomerized polyphenol is in an oligomerized polyphenol layer having a thickness of less than 100 nm.
6. The medical device of claim 5 wherein the coating is formed on the inner diameter of a catheter.
7. A method for reducing or preventing the adherence of bacteria on a medical device surface, comprising implanting the device of claim 5 in a patient.
8. The medical device of claim 1 wherein the oligomerized polyphenol comprises (a) a polyphenol having a molecular weight in the range of 500-4000 Da, (b) a polyphenol having 12 or more phenolic hydroxyl groups, or both (a) and (b).
9. The medical device of claim 1 wherein (a) the oligomerized polyphenol comprises a polyphenol derived from esterification of a composition comprising gallic acid, (b) the oligomerized polyphenol comprises tannic acid, or both (a) and (b).
10. The medical device of claim 1 wherein the oligomerized polyphenol comprises an inorganic metal ion that crosslinks polyphenols.
11. The medical device of claim 1 wherein the hemostatic coating has thickness of less than 25 nm.
12. The medical device of claim 1 wherein the oligomerized polyphenol is formed by causing oligomerization of the polyphenol using a base.
13. The medical device of claim 5 wherein the oligomerized polyphenol layer has thickness of less than 25 nm.
14. The medical device of claim 5 wherein the oligomerized polyphenol is formed by causing oligomerization of the polyphenol using a base or an inorganic coordinating molecule.
15. The medical device of claim 5 wherein the coating comprises a first layer that is an oligomerized polyphenol layer and a second layer comprising a natural or synthetic polymer that is hydrogen bonded to the oligomerized polyphenol in the oligomerized polyphenol layer.
16. The medical device of claim 15 wherein the first and second coated layers have a combined thickness of less than 250 nm, or less than 100 nm.
17. The medical device of claim 1 wherein the water-insoluble hemostatic coating is formed by applying a coating composition comprising a polyphenol on a medical device surface and causing oligomerization of the polyphenol using a base or an inorganic coordinating molecule.