PHOTOCROSSLINKABLE SYNTHETIC POLYMERS
In certain embodiments, the present disclosure provides adhesive compositions and medical graft materials comprising adhesive compositions. In some forms, such adhesive compositions comprise are photocurable and comprise one or more phenol-enriched synthetic polymers.
1 . A medical composition comprising:
a photoactivatable catalyst,
an electron acceptor, and
a phenol-enriched synthetic polymer; and
a liquid carrier.
2 . The medical composition of claim 1 , wherein said synthetic polymer comprises polyethylene glycol, polyvinyl alcohol, polylactic acid, polyglycolic acid, poly(lactic-co-glycolic acid), and/or poly(glycerol sebacate).
3 . The medical composition of claim 2 wherein said synthetic polymer is a multi-arm synthetic polymer which has been chemically modified so that each arm terminates in a phenol group.
4 - 9 . (canceled)
10 . The medical composition of claim 1 , further comprising gelatin, optionally wherein said gelatin comprises phenol-modified gelatin.
11 . (canceled)
12 . The medical composition of claim 10 , wherein said phenol-enriched synthetic polymer and said phenol-modified gelatin are present in amounts such that a ratio of phenol groups of said phenol-enriched synthetic polymer and phenol groups of said phenol-modified gelatin is about 1:2.
13 . The medical composition of claim 10 , wherein 20% to 80% of the total phenol in the composition is provided by said phenol-enriched synthetic polymer.
14 . The medical composition of claim 1 , wherein said phenol-enriched synthetic polymer has a molecular mass of 2 kDa to 10 kDa.
15 . (canceled)
16 . A method of crosslinking a synthetic polymer, the method comprising:
irradiating a composition comprising a photoactivatable catalyst, an electron acceptor, and a phenol-enriched synthetic polymer to initiate a cross-linking reaction.
17 . The method of claim 16 , wherein said irradiating comprises exposing the composition to visible light for a duration sufficient to initiate a cross-linking reaction.
18 - 19 . (canceled)
20 . The method of claim 16 , wherein the synthetic polymer comprises polyethylene glycol, polyvinyl alcohol, polylactic acid, polyglycolic acid, poly(lactic-co-glycolic acid), and/or poly(glycerol sebacate).
21 . The method of claim 20 , wherein the synthetic polymer is a multi-arm synthetic polymer which has been chemically modified so that each arm terminates in a phenol group.
22 - 27 . (canceled)
28 . The method of claim 16 , wherein the composition further comprising gelatin, optionally wherein the gelatin comprises phenol-modified gelatin.
29 . (canceled)
30 . The method of claim 28 , wherein the phenol-enriched synthetic polymer and the phenol-modified gelatin are present in amounts such that a ratio of phenol groups of the phenol-enriched synthetic polymer and phenol groups of the phenol-modified gelatin is about 1:2.
31 . The method of claim 28 , wherein 20% to 80% of the total phenol in the composition is provided by the phenol-enriched synthetic polymer.
32 . The method of claim 16 , wherein the phenol-enriched synthetic polymer has a molecular mass of 2 kDa to 10 kDa.
33 . (canceled)
34 . The method of claim 16 , wherein the composition is carried by a substrate suitable for implantation.
35 . The method of claim 34 , wherein the substrate comprises an extracellular matrix material.
36 . A medical implant comprising:
a substrate suitable for implantation;
a medical adhesive carried by said substrate, said medical adhesive comprising:
a photoactivatable catalyst,
an electron acceptor, and
a phenol-enriched synthetic polymer.
37 . The medical implant of claim 36 , wherein said substrate comprises an extracellular matrix material, optionally wherein said extracellular matrix material comprises submucosa, renal capsule membrane, dermal collagen, dura mater, pericardium, fascia lata, serosa, peritoneum or basement membrane layers, or including liver basement membrane.
38 . (canceled)
39 . The medical implant of claim 37 , wherein the extracellular matrix material is in sheet form, and wherein said medical adhesive is carried on a first surface of the sheet form extracellular matrix material.
40 . The medical implant of claim 36 , wherein the medical adhesive is a crosslinked hydrogel.
41 . (canceled)
42 . The medical implant of claim 36 , wherein said synthetic polymer comprise polyethylene glycol, optionally wherein said polyethylene glycol comprises a multi-arm polyethylene glycol which has been chemically modified so that each arm terminates in a phenol group.
43 - 48 . (canceled)
49 . The medical implant of claim 36 , further comprising gelatin, optionally wherein said gelatin comprises phenol-modified gelatin.
50 . (canceled)
51 . The medical implant of claim 49 , wherein said phenol-enriched synthetic polymer and said phenol-modified gelatin are present in amounts such that a ratio of phenol groups of said phenol-enriched synthetic polymer and phenol groups of said phenol-modified gelatin is about 1:2.
52 . The medical implant of claim 49 , wherein 20% to 80% of the total phenol in the composition is provided by said phenol-enriched synthetic polymer.
53 . The medical implant of claim 36 , wherein said phenol-enriched synthetic polymer has a molecular mass of 2 kDa to 10 kDa.
54 - 69 . (canceled)
70 . A method of joining and/or sealing tissues in a surgical procedure, the method comprising:
applying a medical composition as described in claim 1 to a tissue portion; and
irradiating the tissue medical composition to initiate a cross-linking reaction between one or more endogenous proteins and the phenol-enriched synthetic polymer to seal the tissue portion or join the tissue portion to an adjacent tissue portion.