Biodegradable Adhesive Hydrogels

• US 20090294049A1
• Filed: 06/02/2008
• Published: 12/03/2009
• Est. Priority Date: 06/02/2008
• Status: Abandoned Application

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Guo, Ya, Udipi, Kishore
• Application Number:
  US12/131,591
• Publication Number:
  US 20090294049A1
• Time in Patent Office: Days
• US Class Current: 156/275.5
• CPC Class Codes: A61L 24/0031 Hydrogels or hydrocolloids
• CPC Class Codes: A61L 24/06 obtained by reactions only involving carbon-to-carbon unsaturated bonds A61L24/043, A61L24/046 take precedence
• CPC Class Codes: C08L 23/06 Polyethene

Abstract

Disclosed are methods for forming adhesive hydrogels on tissue surfaces comprising applying to a first tissue surface at a treatment site a first mixture comprising at least one photosensitive molecule and at least one initiator, exposing the first tissue surface to light having a wavelength sufficient to activate the photosensitive molecule to form an activated tissue surface, applying to the activated tissue surface or to a second surface a second mixture comprising at least one macromer, at least one cross-linking agent, and at least one initiator and contacting the first tissue surface with the second surface thus adhering the first tissue surface to the second surface through macromer cross-linking and resulting adhesive hydrogel formation.

Claims

1. A method for adhering a first surface to a second surface with an adhesive hydrogel wherein at least one of said first surface and said second surface is a tissue surface, said method comprising:

a) applying to said first surface a first mixture comprising at least one photosensitive molecule and at least one initiator;

b) applying to said second surface a second mixture comprising at least one macromer, at least one cross-linking agent, and at least one initiator;

c) contacting said first surface with said second surface after application of said first mixture and said second mixture; and

d) exposing said contacted surfaces to light having a wavelength sufficient to activate said photosensitive molecule, thereby forming an adhesive hydrogel and adhering said first surface to said second surface.

2. The method according to claim 1 wherein both of said first surface and said second surface are a tissue surface.

3. The method according to claim 1 wherein one of said first surface and said second surface is a tissue surface and the other of said first surface and said second surface is an implantable medical device or a tissue implant.

4. The method according to claim 3 wherein said tissue implant is selected from the group consisting of organ transplants, cultured cells, cultured tissue, skin, bone, ligaments, blood vessels, and heart valves.

5. The method according to claim 3 wherein said medical device is selected from the group consisting of joint implants, dental implants, soft tissue cosmetic prostheses, wound dressings, vascular prostheses, and ophthalmic prostheses.

6. The method according to claim 1 wherein said first mixture further comprises a cross-linking agent.

7. The method according to claim 1 wherein said at least one photosensitive molecule is selected from the group consisting of photosensitive dyes, quinones, hydroquinones, poly alkenes, polyaromatic compounds, ketones, unsaturated ketones, peroxides, halides, and derivatives thereof.

8. The method according to claim 7 wherein said photosensitive dye is selected from the group consisting of Eosin Y, Eosin B, fluorone, erythrosine, fluorecsein, indian yellow, and derivatives thereof.

9. The method according to claim 1 wherein said at least one initiator is an amino alcohol selected from the group consisting of methyldiethanolamine, triethanolamine, thiols, and amino alcohols having functional groups comprising C₁ to C₁₂ alkyls, C₃ to C₁₂ alkenyls, C₃ to C₁₂ alkynyls, C₆ to C₁₄ aryls, C₄ to C₁₂ heterocyclic alkyls, C₄ to C₁₂ heterocyclic alkenyls, C₄ to C₁₂ heterocyclic aryls, and derivatives thereof.

10. The method according to claim 1 wherein said at least one macromer is selected from the group consisting of polyethers, acrylates, polyesters, polyamides, polyurethanes, poly vinylpyrrolidinone, and derivatives thereof.

11. The method according to claim 10 wherein said at least one macromer is formed of monomers selected from the group consisting of polyethylene glycol derivatives, poly vinylpyrrolidinone, trimethylene carbonate, poly vinylpyrrolidinone derivatives, hydrophilic polyamides, polyurethanes, polysulfones, acrylates, and derivatives thereof.

12. The method according to claim 1 wherein said at least one cross-linking agent is selected from the group consisting of methyl methacrylate, ethyl methacrylate, 2-vinyl pyrrolidinone, propyl methacrylate, hexyl methacrylate, 2-hydroxyethyl methacrylate, lactide, caprolactone, glycolide, butyrolactone, siloxanes, polyethylene glycol, amide containing monomers, and derivatives thereof.

13. A method for forming adhesive hydrogels on tissue surfaces comprising:

a) applying to a first tissue surface at a treatment site a first mixture comprising at least one photosensitive molecule and at least one initiator;

b) applying to said first tissue surface a second mixture comprising at least one macromer, at least one cross-linking agent, and at least one initiator; and

c) contacting said first tissue surface with a second surface after application of said first mixture and said second mixture; and

d) exposing said contacted first tissue surface to light having a wavelength sufficient to activate said photosensitive molecule thus adhering said first tissue surface to said second surface through macromer cross-linking and resulting adhesive hydrogel formation.

14. The method according to claim 13 wherein said first mixture further comprises a cross-linking agent.

15. The method according to claim 13 wherein said at least one photosensitive molecule is selected from the group consisting of photosensitive dyes, quinones, hydroquinones, poly alkenes, polyaromatic compounds, ketones, unsaturated ketones, peroxides, halides, and derivatives thereof.

16. The method according to claim 15 wherein said photosensitive dye is selected from the group consisting of Eosin Y, Eosin B, fluorone, erythrosine, fluorecsein, indian yellow, and derivatives thereof.

17. The method according to claim 13 wherein said at least one initiator is an amino alcohol selected from the group consisting of methyldiethanolamine, triethanolamine, thiols, and amino alcohols having functional groups comprising C₁ to C₁₂ alkyls, C₃ to C₁₂ alkenyls, C₃ to C₁₂ alkynyls, C₆ to C₁₄ aryls, C₄ to C₁₂ heterocyclic alkyls, C₄ to C₁₂ heterocyclic alkenyls, C₄ to C₁₂ heterocyclic aryls, and derivatives thereof.

18. The method according to claim 13 wherein said at least one macromer is selected from the group consisting of polyethers, acrylates, polyesters, polyamides, polyurethanes, poly vinylpyrrolidinone, and derivatives thereof.

19. The method according to claim 18 wherein said macromer is formed of at least one monomer selected from the group consisting of polyethylene glycol derivatives, poly vinylpyrrolidinone, trimethylene carbonate, poly vinylpyrrolidinone derivatives, hydrophilic polyamides, polyurethanes, polysulfones, acrylates, and derivatives thereof.

20. The method according to claim 13 wherein said at least one cross-linking agent is selected from the group consisting of methyl methacrylate, ethyl methacrylate, 2-vinyl pyrrolidinone, propyl methacrylate, hexyl methacrylate, 2-hydroxyethyl methacrylate, lactide, caprolactone, glycolide, butyrolactone, siloxanes, polyethylene glycol, amide containing monomers, and derivatives thereof..

21. The method according to claim 13 wherein said second surface is selected from the group consisting of a second tissue surface, a tissue implant, and a medical device.

22. The method according to claim 21 wherein said tissue implant is selected from the group consisting of organ transplants, cultured cells, cultured tissue, skin, bone, ligaments, blood vessels, and heart valves.

23. The method according to claim 21 wherein said medical device is selected from the group consisting of joint implants, dental implants, soft tissue cosmetic prostheses, wound dressings, vascular prostheses, and ophthalmic prostheses.

24. The method according to claim 13 wherein said adhesive hydrogel forms a treatment form selected from the group consisting of tissue adhesives, surgical adhesion prevention barriers, implantable wound dressings, scaffolds for cellular growth, tissue sealants, wound covering agents, controlled release adhesives, and barriers in preventing postoperative adhesions.