Claims for Patent: 7,837,986

Summary for Patent: 7,837,986

Title:	Protein-based polymer tissue adhesives for medical use
Abstract:	Tissue adhesives formed by crosslinking albumin and/or gelatin with certain polyamines and/or polycarboxylates using a water-soluble carbodiimide are disclosed. The use of the tissue adhesives for medical and veterinary applications such as topical wound closure; and surgical procedures, such as intestinal anastomosis, vascular anastomosis, tissue repair, and ophthalmic procedures; drug delivery; anti-adhesive applications; and as a bulking agent to treat urinary incontinence are described.
Inventor(s):	Chenault; Henry Keith (Hockessin, DE)
Assignee:	E. I. du Pont de Nemours and Company (Wilmington, DE)
Application Number:	11/289,169
Patent Claims:	1. A kit comprising: A) a first vessel containing an aqueous solution comprising albumin, gelatin or a mixture thereof; B) a second vessel containing an undissolved water-soluble carbodiimide; and C) a third vessel, the contents of which comprise water; provided that: (i) the contents of at least one of the first or third vessels further comprise at least one of: (a) at least one water-dispersible multi-arm polyether amine, the total water-dispersible multi-arm polyether amine concentration being in the range of about 0.5% to about 20% by weight; or (b) a mixture of said water-dispersible multi-arm polyether amine of (i)(a) having a total concentration in the range of about 0.5% to about 20% by weight and at least one polycarboxylate selected from the group consisting of carboxymethyl cellulose, carboxymethyl dextran, and carboxymethyl starch, having a total polycarboxylate concentration in the range of about 0.5% to about 5% by weight; or (ii) the kit further comprises a fourth vessel containing at least one of: (a) at least one water-dispersible multi-arm polyether amine, as a neat liquid; or an aqueous solution comprising at least one water-dispersible multi-arm polyether amine, the total water-dispersible multi-arm polyether amine concentration being in the range of about 0.5% to about 20% by weight; or (c) an aqueous mixed water-dispersible multi-arm polyether amine/polycarboxylate solution comprising said at least one water-dispersible multi-arm polyether amine of (ii)(b) having a total water-dispersible multi-arm polyether amine concentration of about 0.5% to about 20% by weight, and at least one polycarboxylate selected from the group consisting of carboxymethyl cellulose, carboxymethyl dextran, and carboxymethyl starch, having a total polycarboxylate concentration of about 0.5% to about 5% by weight; or (iii) a combination of (i) and (ii); provided further that: (iv) if the aqueous solution in the first vessel of (A) comprises albumin, but not gelatin, then the concentration of albumin in the aqueous solution is about 25% to about 40% by weight; (v) if the aqueous solution in the first vessel of (A) comprises gelatin, but not albumin, then the concentration of gelatin in the aqueous solution is about 15% to about 35% by weight; and (vi) if the aqueous solution in the first vessel of (A) comprises a mixture of albumin and gelatin, then the total concentration of albumin and gelatin combined is about 15% to about 40% by weight. 2. The kit according to claim 1 wherein the albumin is selected from the group consisting of a mammalian serum albumin, an egg albumin, and mixtures thereof. 3. The kit according to claim 2 wherein the mammalian serum albumin is selected from the group consisting of bovine serum albumin, ovine serum albumin, porcine serum albumin, human serum albumin, equine serum albumin, lapine serum albumin, rat serum albumin, murine serum albumin, and mixtures thereof. 4. The kit according to claim 2 wherein the egg albumin is chicken egg albumin. 5. The kit according to claim 1 wherein the first, second, third, and fourth vessels and their contents are sterilized. 6. The kit according to claim 1 wherein the contents of at least one of the first, third, or fourth vessels further comprise an additive selected from the group consisting of pH modifiers, viscosity modifiers, antimicrobials, colorants, healing promoters, surfactants, anti-inflammatory agents, thrombogenic agents, and radio-opaque compounds. 7. The kit according to claim 1 wherein the undissolved water-soluble carbodiimide is selected from the group consisting of compounds represented by structures 1 and 2, wherein R.sup.1=hydrogen, methyl or ethyl, R.sup.2=methyl, ethyl, propyl, isopropyl or cyclohexyl, n=0, 1 or 2, m=1, 2 or 3, and X.sup.-=chloride, bromide, iodide, acetate, sulfate, hydrogen sulfate, methyl sulfate, methanesulfonate, ethanesulfonate, 1-propanesulfonate, 2-propanesulfonate, 1-butanesulfonate, benzenesulfonate, p-toluenesulfonate, or perchlorate ##STR00002## 8. The kit according to claim 1 wherein the undissolved water-soluble carbodiimide is selected from the group consisting of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide, 1-[3-(dimethylamino)propyl]-3-ethylcarbodiimide methiodide, and 1-cyclohexyl-3-(2-morpholinoethyl)carbodiimide metho-p-toluenesulfonate. 9. The kit according to claim 1 wherein the water-dispersible multi-arm polyether amine is selected from the group consisting of amino-terminated star polyethylene oxides, amino-terminated dendritic polyethylene oxides, amino-terminated comb polyethylene oxides, amino-terminated star polypropylene oxides, amino-terminated dendritic polypropylene oxides, amino-terminated comb polypropylene oxides, amino-terminated star copolymers of ethylene oxide and propylene oxide, amino-terminated dendritic copolymers of ethylene oxide and propylene oxide, amino-terminated comb copolymers of ethylene oxide and propylene oxide, amino-terminated star copolymers of ethylene oxide and trimethylene oxide, amino-terminated dendritic copolymers of ethylene oxide and trimethylene oxide, amino-terminated comb copolymers of ethylene oxide and trimethylene oxide, amino-terminated star copolymers of ethylene oxide and butylene oxide, amino-terminated dendritic copolymers of ethylene oxide and butylene oxide, amino-terminated comb copolymers of ethylene oxide and butylene oxide, amino-terminated star copolymers of ethylene oxide and tetrahydrofuran, amino-terminated dendritic copolymers of ethylene oxide and tetrahydrofuran, amino-terminated comb copolymers of ethylene oxide and tetrahydrofuran, amino-terminated dendritic polyamidoamines, polyoxyalkylene triamines, and mixtures thereof. 10. The kit according to claim 1 wherein the weight-average molecular weight of the water-dispersible multi-arm polyether amine is between about 2,000 and about 100,000 Daltons. 11. The kit according to claim 1 wherein the water-dispersible multi-arm polyether amine is an eight arm poly(ethylene glycol) having a molecular weight of 10,000 Daltons.

Details for Patent 7,837,986

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Grifols Therapeutics Llc	ALBUKED, PLASBUMIN-20, PLASBUMIN-25, PLASBUMIN-5	albumin (human)	For Injection	101138	10/21/1942		2024-12-01
Baxalta Us Inc.	BUMINATE, FLEXBUMIN	albumin (human)	Injection	101452	03/03/1954		2024-12-01
Csl Behring Ag	ALBURX	albumin (human)	Injection	102366	07/23/1976		2024-12-01
Grifols Biologicals Llc	ALBUTEIN	albumin (human)	Injection	102478	08/15/1978		2024-12-01
Instituto Grifols, S.a.	HUMAN ALBUMIN GRIFOLS	albumin (human)	Injection	103352	02/17/1995		2024-12-01
Instituto Grifols, S.a.	HUMAN ALBUMIN GRIFOLS	albumin (human)	Injection	103352	06/11/2003		2024-12-01
Csl Behring Llc	ALBUMINAR, ALBUMINAR-20, ALBUMINAR-25, ALBUMINAR-5	albumin (human)	Injection	103955	03/17/2000		2024-12-01