Dry double-sided material for adhesion of wet tissues and devices
A method of adhering wet tissues together includes providing a dry adhesive material that contains one or more hydrophilic polymers, one or more amine coupling groups, and one or more cross linkers. The method including the steps of placing the dry adhesive material in contact with one or more wet tissue surfaces; allowing the dry adhesive material to absorb liquid from the one or more wet surfaces to thereby swell the adhesive material; allowing instant crosslinking by intermolecular interactions between the adhesive material and the one or more wet surfaces; and allowing quick covalent crosslinking between the adhesive material and the one or more wet surfaces.
1. A therapeutic agent delivery device for attachment to one or more wet tissue surfaces and for releasing one or more therapeutic agents to a target site comprising:
(i) a dry adhesive material layer having a top surface and a bottom surface, the dry adhesive material layer comprising:
one or more hydrophilic polymers;
one or more amine coupling groups, and
one or more cross linkers,
wherein, the dry adhesive material layer is in the form of a film or tape having the top surface and the bottom surface, and wherein the dry adhesive material layer has a liquid content such that placement of one or more of the top and/or bottom surfaces of the dry adhesive material layer in contact with the one or more wet surfaces causes the dry adhesive material layer to absorb liquid from the one or more wet surfaces, swell to form temporary crosslinking between the dry adhesive material layer and the wet surface, and form covalent crosslinking between the one or more amine coupling groups and the one or more wet surfaces,
wherein the dry adhesive material layer further comprises poly (acrylic acid) grafted with N-hydroxysuccinimide ester, and crosslinked by biodegradable gelatin methacrylate; and
(ii) one or more therapeutic agent loaded patch disposed on one or more of the top surface and bottom surface of the dry adhesive material layer.
2. The therapeutic agent delivery device of claim 1 , wherein the one or more hydrophilic polymers are selected from polyacrylic acid, polyacrylamide, polyvinyl alcohol, polyhydroxy ethyl methacrylate, polyethylene glycol, poly vinyl pyrrolidone, poly styrene sulfonate, casein, albumin, gelatin, collagen, chitosan, hyaluronic acid, alginic acid, oxidized alginate, pectin, and combinations thereof.
3. The therapeutic agent delivery device of claim 1 , wherein the one or more amine coupling groups are selected from N-hydroxysuccinimide ester, N-hydroxysulfosuccinimide ester, aldehyde, imidoester, epoxide, isocyanate, catechol, and combinations thereof.
4. The therapeutic agent delivery device of claim 1 , wherein the one or more crosslinkers are selected from gelatin methacrylate, hyaluronic acid methacrylate, oxidized methacrylic alginate, polycaprolactone diacrylate, N,N′-bis (acryloyl) cystamine, N,N′-methylenebis (acrylamide), polyethylene glycol diacrylate, polyethylene glycol dimethacrylate, and combinations thereof.
5. The therapeutic agent delivery device of claim 1 , wherein after the covalent crosslinking is formed between the one or more amine coupling groups and the one or more wet surfaces, the swollen dry adhesive material layer transforms into a layer of a hydrogel.
6. The therapeutic agent delivery device of claim 1 , wherein the dry adhesive material layer is biodegradable.
7. The therapeutic agent delivery device of claim 1 , wherein the dry adhesive material layer is in the form of a flat sheet, a perforated sheet, a double sided tape or film, and a perforated double sided tape or film.