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Patent US6033719A successfully refreshed from Google Patents.
US6033719A
Expired / Lapsed
US
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Method for covalent attachment of biomolecules to surfaces of medical devices
Assignee: Medtronic Inc
•
Filing: 1998-01-22
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Granted: 2000-03-07
•
Expires: 2018-01-22
Abstract
Abstract A method for making a medical device having at least one biomolecule immobilized on a substrate surface is provided. The method may include combining a biomolecule comprising a 1,2 dicarbonyl moiety with a material comprising a guanidino moiety to form an immobilized biomolecule on a medical device biomaterial surface through covalent bonds. Another method of the present invention may include combining a biomolecule comprising a guanidino moiety with a material comprising a 1,2 dicarbonyl moiety to form an immobilized biomolecule on a medical device biomaterial surface through covalent bonds. Additionally, one method of the present invention may be employed to crosslink biomolecules, located in solution or on a medical device biomaterial surface, thereby forming a crosslinked biomaterial or a crosslinked medical device coating.
Inventors
- 👤 James R. Keogh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:30
CPC Classifications
A; A61; A61L; A61L33/00; A61L33/0076; A61L33/0082; A61L27/00; A61L27/28; A61L27/34; A61L29/00; A61L29/08; A61L29/085; A61L31/00; A61L31/08; A61L31/10
Claims Analysis
Total Claims: 83
Claim 1
Independent Claim
108 words
A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the medical device having a suitable biomaterial forming the surface, a guanidino moiety being disposed on the surface; (b) providing a biomolecule, the biomolecule comprising a 1,2 dicarbonyl moiety; and (c) combining the 1,2 dicarbonyl moiety with the guanidino moiety to form covalent bonds, the covalent bonds immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating.
Claim 2
Independent Claim
108 words
A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the medical device having a suitable biomaterial forming the surface, a guanidino moiety being disposed on the surface; (b) providing a biomolecule, the biomolecule comprising a 1,2 dicarbonyl moiety; and (c) combining the 1,2 dicarbonyl moiety with the guanidino moiety to form covalent bonds, the covalent bonds immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating.
Claim 3
Dependent Claim
13 words
The method of claim 1, further comprising the addition of a stabilizing agent.
Claim 4
Dependent Claim
12 words
The method of claim 2, wherein the stabilizing agent is borate ion.
Claim 5
Dependent Claim
72 words
The method of claim 1, wherein the medical device is selected from the group consisting of a blood-contacting medical device, a tissue-contacting medical device, a bodily fluid-contacting medical device, an implantable medical device, an extracorporeal medical device, a blood oxygenator, a blood pump, tubing for carrying blood, an endoprosthesis medical device, a vascular graft, a stent, a pacemaker lead, a heart valve, temporary intravascular medical device, a catheter and a guide wire.
Claim 6
Dependent Claim
14 words
The method of claim 1, wherein the guanidino moiety is an arginine amino acid.
Claim 7
Dependent Claim
13 words
The method of claim 1, wherein the biomolecule is a naturally occurring biomolecule.
Claim 8
Dependent Claim
13 words
The method of claim 1, wherein the biomolecule is a chemically synthesized biomolecule.
Claim 9
Dependent Claim
128 words
The method of claim 1, wherein the biomolecule is selected from the group consisting of a globular protein, a structural protein, a membrane protein, a cell attachment protein, a protein, a structural peptide, a membrane peptide, a cell attachment peptide, a peptide, an anti-inflammatory agent, an antibody, an antigen, an immunoglobulin, a defense agent, a catalyst, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a proteoglycan, a toxin, an antibiotic agent, an antibacterial agent, an antimicrobial agent, a regulatory agent, a transport agent, a fibrous agent, a blood agent, a clotting agent, a platelet agent, an antithrombotic agent, an anticoagulant agent, a polysaccharide, a carbohydrate, a fatty acid, a nucleic acid, a DNA segment, RNA segment, a lectin, a drug, a vitamin and a ligand.
Claim 10
Dependent Claim
31 words
The method of claim 1, wherein at least a portion of the surface forms at least one of a tube, a rod, a membrane, a balloon, a bag and a sheet.
Claim 11
Dependent Claim
92 words
The method of claim 1, wherein the surface comprises at least one of a biocompatible material selected from the group consisting of metal, titanium, titanium alloys, tin-nickel alloys, shape memory alloys, aluminum oxide, platinum, platinum alloys, stainless steel, MP35N stainless steel, elgiloy, stellite, pyrolytic carbon, silver carbon, glassy carbon, polymer, polyamide, polycarbonate, polyether, polyester, polyolefin, polyethylene, polypropylene, polystyrene, polyurethane, polyvinyl chloride, polyvinylpyrrolidone, silicone elastomer, fluoropolymer, polyacrylate, polyisoprene, polytetrafluoroethylene, rubber, ceramic, hydroxapatite, human protein, human tissue, animal protein, animal tissue, bone, skin, teeth, collagen, laminin, elastin, fibrin, wood, cellulose, compressed carbon and glass.
Claim 12
Independent Claim
107 words
A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, a 1,2 dicarbonyl moiety being disposed on the surface; (b) providing a biomolecule, the biomolecule comprising a guanidino moiety; and (c) combining the guanidino moiety with the 1,2 dicarbonyl moiety to form covalent bonds, the covalent bonds immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating.
Claim 13
Independent Claim
107 words
A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, a 1,2 dicarbonyl moiety being disposed on the surface; (b) providing a biomolecule, the biomolecule comprising a guanidino moiety; and (c) combining the guanidino moiety with the 1,2 dicarbonyl moiety to form covalent bonds, the covalent bonds immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating.
Claim 14
Dependent Claim
13 words
The method of claim 11, further comprising the addition of a stabilizing agent.
Claim 15
Dependent Claim
12 words
The method of claim 12, wherein the stabilizing agent is borate ion.
Claim 16
Dependent Claim
71 words
The method of claim 11, wherein the device is selected from the group consisting of a blood-contacting medical device, a tissue-contacting medical device, a bodily fluid-contacting medical device, an implantable medical device, an extracorporeal medical device, a blood oxygenator, a blood pump, tubing for carrying blood, an endoprosthesis medical device, a vascular graft, a stent, a pacemaker lead, a heart valve, temporary intravascular medical device, a catheter and a guide wire.
Claim 17
Dependent Claim
14 words
The method of claim 11, wherein the guanidino moiety is an arginine amino acid.
Claim 18
Dependent Claim
13 words
The method of claim 11, wherein the biomolecule is a naturally occurring biomolecule.
Claim 19
Dependent Claim
13 words
The method of claim 11, wherein the biomolecule is a chemically synthesized biomolecule.
Claim 20
Dependent Claim
128 words
The method of claim 11, wherein the biomolecule is selected from the group consisting of a globular protein, a structural protein, a membrane protein, a cell attachment protein, a protein, a structural peptide, a membrane peptide, a cell attachment peptide, a peptide, an anti-inflammatory agent, an antibody, an antigen, an immunoglobulin, a defense agent, a catalyst, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a proteoglycan, a toxin, an antibiotic agent, an antibacterial agent, an antimicrobial agent, a regulatory agent, a transport agent, a fibrous agent, a blood agent, a clotting agent, a platelet agent, an antithrombotic agent, an anticoagulant agent, a polysaccharide, a carbohydrate, a fatty acid, a nucleic acid, a DNA segment, RNA segment, a lectin, a drug, a vitamin and a ligand.
Claim 21
Dependent Claim
31 words
The method of claim 11, wherein at least a portion of the surface forms at least one of a tube, a rod, a membrane, a balloon, a bag and a sheet.
Claim 22
Dependent Claim
92 words
The method of claim 11, wherein the surface comprises at least one of a biocompatible material selected from the group consisting of metal, titanium, titanium alloys, tin-nickel alloys, shape memory alloys, aluminum oxide, platinum, platinum alloys, stainless steel, MP35N stainless steel, elgiloy, stellite, pyrolytic carbon, silver carbon, glassy carbon, polymer, polyamide, polycarbonate, polyether, polyester, polyolefin, polyethylene, polypropylene, polystyrene, polyurethane, polyvinyl chloride, polyvinylpyrrolidone, silicone elastomer, fluoropolymer, polyacrylate, polyisoprene, polytetrafluoroethylene, rubber, ceramic, hydroxapatite, human protein, human tissue, animal protein, animal tissue, bone, skin, teeth, collagen, laminin, elastin, fibrin, wood, cellulose, compressed carbon and glass.
Claim 23
Independent Claim
125 words
A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, an amine moiety being disposed on the surface; (b) combining the amine moiety with a guanidino forming agent to form a guanidino moiety on the surface; (c) providing a biomolecule, the biomolecule comprising a 1,2 dicarbonyl moiety; and (d) combining the 1,2 dicarbonyl moiety with the guanidino moiety to form covalent bonds, the covalent bonds immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating.
Claim 24
Independent Claim
125 words
A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, an amine moiety being disposed on the surface; (b) combining the amine moiety with a guanidino forming agent to form a guanidino moiety on the surface; (c) providing a biomolecule, the biomolecule comprising a 1,2 dicarbonyl moiety; and (d) combining the 1,2 dicarbonyl moiety with the guanidino moiety to form covalent bonds, the covalent bonds immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating.
Claim 25
Dependent Claim
13 words
The method of claim 21, further comprising the addition of a stabilizing agent.
Claim 26
Dependent Claim
12 words
The method of claim 22, wherein the stabilizing agent is borate ion.
Claim 27
Dependent Claim
71 words
The method of claim 21, wherein the device is selected from the group consisting of a blood-contacting medical device, a tissue-contacting medical device, a bodily fluid-contacting medical device, an implantable medical device, an extracorporeal medical device, a blood oxygenator, a blood pump, tubing for carrying blood, an endoprosthesis medical device, a vascular graft, a stent, a pacemaker lead, a heart valve, temporary intravascular medical device, a catheter and a guide wire.
Claim 28
Dependent Claim
39 words
The method of claim 21, wherein the guanidino forming agent is selected from the group consisting of S-ethylthiouronium bromide, S-ethylthiouronium chloride, O-methylisourea, O-methylisouronium sulfate, O-methylisourea hydrogen sulfate, S-methylisothiourea, 2-methyl-1-nitroisourea, aminoiminomethanesulfonic acid, cyanamide, cyanoguanide, dicyandiamide, 3,5-dimethyl-1-guanylpyrazole nitrate and 3,5-dimethyl pyrazole.
Claim 29
Dependent Claim
14 words
The method of claim 21, wherein the guanidino moiety is an arginine amino acid.
Claim 30
Dependent Claim
13 words
The method of claim 21, wherein the biomolecule is a naturally occurring biomolecule.
Claim 31
Dependent Claim
13 words
The method of claim 21, wherein the biomolecule is a chemically synthesized biomolecule.
Claim 32
Dependent Claim
128 words
The method of claim 21, wherein the biomolecule is selected from the group consisting of a globular protein, a structural protein, a membrane protein, a cell attachment protein, a protein, a structural peptide, a membrane peptide, a cell attachment peptide, a peptide, an anti-inflammatory agent, an antibody, an antigen, an immunoglobulin, a defense agent, a catalyst, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a proteoglycan, a toxin, an antibiotic agent, an antibacterial agent, an antimicrobial agent, a regulatory agent, a transport agent, a fibrous agent, a blood agent, a clotting agent, a platelet agent, an antithrombotic agent, an anticoagulant agent, a polysaccharide, a carbohydrate, a fatty acid, a nucleic acid, a DNA segment, RNA segment, a lectin, a drug, a vitamin and a ligand.
Claim 33
Dependent Claim
31 words
The method of claim 21, wherein at least a portion of the surface forms at least one of a tube, a rod, a membrane, a balloon, a bag and a sheet.
Claim 34
Dependent Claim
92 words
The method of claim 21, wherein the surface comprises at least one of a biocompatible material selected from the group consisting of metal, titanium, titanium alloys, tin-nickel alloys, shape memory alloys, aluminum oxide, platinum, platinum alloys, stainless steel, MP35N stainless steel, elgiloy, stellite, pyrolytic carbon, silver carbon, glassy carbon, polymer, polyamide, polycarbonate, polyether, polyester, polyolefin, polyethylene, polypropylene, polystyrene, polyurethane, polyvinyl chloride, polyvinylpyrrolidone, silicone elastomer, fluoropolymer, polyacrylate, polyisoprene, polytetrafluoroethylene, rubber, ceramic, hydroxapatite, human protein, human tissue, animal protein, animal tissue, bone, skin, teeth, collagen, laminin, elastin, fibrin, wood, cellulose, compressed carbon and glass.
Claim 35
Independent Claim
122 words
A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, a 1,2 dicarbonyl moiety being disposed on the surface; (b) providing a biomolecule, the biomolecule comprising an amine moiety; (c) combining the amine moiety with a guanidino forming agent to form a guanidino moiety; and (d) combining the guanidino moiety with the 1,2 dicarbonyl moiety to form covalent bonds, the covalent bonds immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating.
Claim 36
Independent Claim
122 words
A method of forming a coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, a 1,2 dicarbonyl moiety being disposed on the surface; (b) providing a biomolecule, the biomolecule comprising an amine moiety; (c) combining the amine moiety with a guanidino forming agent to form a guanidino moiety; and (d) combining the guanidino moiety with the 1,2 dicarbonyl moiety to form covalent bonds, the covalent bonds immobilizing the biomolecule on the surface, the immobilized biomolecule forming the coating.
Claim 37
Dependent Claim
13 words
The method of claim 32, further comprising the addition of a stabilizing agent.
Claim 38
Dependent Claim
12 words
The method of claim 33, wherein the stabilizing agent is borate ion.
Claim 39
Dependent Claim
71 words
The method of claim 32, wherein the device is selected from the group consisting of a blood-contacting medical device, a tissue-contacting medical device, a bodily fluid-contacting medical device, an implantable medical device, an extracorporeal medical device, a blood oxygenator, a blood pump, tubing for carrying blood, an endoprosthesis medical device, a vascular graft, a stent, a pacemaker lead, a heart valve, temporary intravascular medical device, a catheter and a guide wire.
Claim 40
Dependent Claim
39 words
The method of claim 32, wherein the guanidino forming agent is selected from the group consisting of S-ethylthiouronium bromide, S-ethylthiouronium chloride, O-methylisourea, O-methylisouronium sulfate, O-methylisourea hydrogen sulfate, S-methylisothiourea, 2-methyl-1-nitroisourea, aminoiminomethanesulfonic acid, cyanamide, cyanoguanide, dicyandiamide, 3,5-dimethyl-1-guanylpyrazole nitrate and 3,5-dimethyl pyrazole.
Claim 41
Dependent Claim
14 words
The method of claim 32, wherein the guanidino moiety is an arginine amino acid.
Claim 42
Dependent Claim
13 words
The method of claim 32, wherein the biomolecule is a naturally occurring biomolecule.
Claim 43
Dependent Claim
13 words
The method of claim 32, wherein the biomolecule is a chemically synthesized biomolecule.
Claim 44
Dependent Claim
128 words
The method of claim 32, wherein the biomolecule is selected from the group consisting of a globular protein, a structural protein, a membrane protein, a cell attachment protein, a protein, a structural peptide, a membrane peptide, a cell attachment peptide, a peptide, an anti-inflammatory agent, an antibody, an antigen, an immunoglobulin, a defense agent, a catalyst, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a proteoglycan, a toxin, an antibiotic agent, an antibacterial agent, an antimicrobial agent, a regulatory agent, a transport agent, a fibrous agent, a blood agent, a clotting agent, a platelet agent, an antithrombotic agent, an anticoagulant agent, a polysaccharide, a carbohydrate, a fatty acid, a nucleic acid, a DNA segment, RNA segment, a lectin, a drug, a vitamin and a ligand.
Claim 45
Dependent Claim
31 words
The method of claim 32, wherein at least a portion of the surface forms at least one of a tube, a rod, a membrane, a balloon, a bag and a sheet.
Claim 46
Dependent Claim
92 words
The method of claim 32, wherein the surface comprises at least one of a biocompatible material selected from the group consisting of metal, titanium, titanium alloys, tin-nickel alloys, shape memory alloys, aluminum oxide, platinum, platinum alloys, stainless steel, MP35N stainless steel, elgiloy, stellite, pyrolytic carbon, silver carbon, glassy carbon, polymer, polyamide, polycarbonate, polyether, polyester, polyolefin, polyethylene, polypropylene, polystyrene, polyurethane, polyvinyl chloride, polyvinylpyrrolidone, silicone elastomer, fluoropolymer, polyacrylate, polyisoprene, polytetrafluoroethylene, rubber, ceramic, hydroxapatite, human protein, human tissue, animal protein, animal tissue, bone, skin, teeth, collagen, laminin, elastin, fibrin, wood, cellulose, compressed carbon and glass.
Claim 47
Independent Claim
109 words
A method of forming a crosslinked coating on a surface of a medical device, the coating being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing a first biomolecule, the first biomolecule comprising a 1,2 dicarbonyl moiety; (b) providing a second biomolecule, the second biomolecule comprising a guanidino moiety; (c) combining the guanidino moiety with the 1,2 dicarbonyl moiety to form covalent bonds, the covalent bonds crosslinking the two materials together to form a crosslinked biomaterial; (d) providing a medical device surface: and (e) immobilizing the crosslinked biomaterial on the surface, the crosslinked biomaterial forming the coating.
Claim 48
Independent Claim
109 words
A method of forming a crosslinked coating on a surface of a medical device, the coating being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing a first biomolecule, the first biomolecule comprising a 1,2 dicarbonyl moiety; (b) providing a second biomolecule, the second biomolecule comprising a guanidino moiety; (c) combining the guanidino moiety with the 1,2 dicarbonyl moiety to form covalent bonds, the covalent bonds crosslinking the two materials together to form a crosslinked biomaterial; (d) providing a medical device surface: and (e) immobilizing the crosslinked biomaterial on the surface, the crosslinked biomaterial forming the coating.
Claim 49
Dependent Claim
13 words
The method of claim 43, further comprising the addition of a stabilizing agent.
Claim 50
Dependent Claim
12 words
The method of claim 44, wherein the stabilizing agent is borate ion.
Claim 51
Dependent Claim
90 words
The method of claim 43, wherein the first biomolecule is selected from the group consisting of an anticoagulant, an antithrombotic, a clotting agent, a platelet agent, an anti-inflammatory, an antibody, an immunoglobulin, a defense agent, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a globular protein, a blood agent, a regulatory agent, a transport agent, a fibrous agent, a structural protein, a membrane protein, a cell attachment protein, a structural peptide, a membrane peptide, a cell attachment peptide, a proteoglycan, a toxin, an antibiotic, and a ligand.
Claim 52
Dependent Claim
14 words
The method of claim 43, wherein the guanidino moiety is an arginine amino acid.
Claim 53
Dependent Claim
90 words
The method of claim 43, wherein the second biomolecule is selected from the group consisting of an anticoagulant, an antithrombotic, a clotting agent, a platelet agent, an anti-inflammatory, an antibody, an immunoglobulin, a defense agent, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a globular protein, a blood agent, a regulatory agent, a transport agent, a fibrous agent, a structural protein, a membrane protein, a cell attachment protein, a structural peptide, a membrane peptide, a cell attachment peptide, a proteoglycan, a toxin, an antibiotic, and a ligand.
Claim 54
Dependent Claim
83 words
The method of claim 43, wherein the medical device is selected from the group consisting of a blood-contacting medical device, a tissue-contacting medical device, a bodily fluid-contacting medical device, an implantable medical device, an extracorporeal medical device, a blood oxygenator, a blood pump, tubing for carrying blood, an endoprosthesis medical device, a cell seeding medical device, a cell binding medical device, a cell separating medical device, a vascular graft, a stent, a heart valve, a tissue glue and a temporary intravascular medical device.
Claim 55
Dependent Claim
32 words
The method of claim 43, wherein at least a portion of the crosslinked biomaterial forms at least one of a tube, a rod, a membrane, a balloon, a bag and a sheet.
Claim 56
Dependent Claim
15 words
The method of claim 43, wherein the crosslinked biomaterial is combined with a third biomolecule.
Claim 57
Dependent Claim
90 words
The method of claim 51, wherein the third biomolecule is selected from the group consisting of an anticoagulant, an antithrombotic, a clotting agent, a platelet agent, an anti-inflammatory, an antibody, an immunoglobulin, a defense agent, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a globular protein, a blood agent, a regulatory agent, a transport agent, a fibrous agent, a structural protein, a membrane protein, a cell attachment protein, a structural peptide, a membrane peptide, a cell attachment peptide, a proteoglycan, a toxin, an antibiotic, and a ligand.
Claim 58
Independent Claim
131 words
A method of forming a crosslinked coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, a first guanidino moiety being disposed on the surface; (b) providing two or more biomolecules, the biomolecules comprising a second guanidino moiety and a 1,2 dicarbonyl moiety; (c) combining the biomolecules with the surface; and (d) allowing the first and second guanidino moieties to combine with the 1,2 dicarbonyl moieties to form covalent bonds, the bonds immobilizing and crosslinking the biomolecules on the surface, the immobilized and crosslinked biomolecules forming the coating.
Claim 59
Independent Claim
131 words
A method of forming a crosslinked coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, a first guanidino moiety being disposed on the surface; (b) providing two or more biomolecules, the biomolecules comprising a second guanidino moiety and a 1,2 dicarbonyl moiety; (c) combining the biomolecules with the surface; and (d) allowing the first and second guanidino moieties to combine with the 1,2 dicarbonyl moieties to form covalent bonds, the bonds immobilizing and crosslinking the biomolecules on the surface, the immobilized and crosslinked biomolecules forming the coating.
Claim 60
Dependent Claim
13 words
The method of claim 53, further comprising the addition of a stabilizing agent.
Claim 61
Dependent Claim
12 words
The method of claim 54, wherein the stabilizing agent is borate ion.
Claim 62
Dependent Claim
72 words
The method of claim 53, wherein the medical device is selected from the group consisting of a blood-contacting medical device, a tissue-contacting medical device, a bodily fluid-contacting medical device, an implantable medical device, an extracorporeal medical device, a blood oxygenator, a blood pump, tubing for carrying blood, an endoprosthesis medical device, a vascular graft, a stent, a pacemaker lead, a heart valve, temporary intravascular medical device, a catheter and a guide wire.
Claim 63
Dependent Claim
17 words
The method of claim 53, wherein the first or second guanidino moiety is an arginine amino acid.
Claim 64
Dependent Claim
12 words
The method of claim 53, wherein the biomolecules are naturally occurring biomolecules.
Claim 65
Dependent Claim
12 words
The method of claim 53, wherein the biomolecules are chemically synthesized biomolecules.
Claim 66
Dependent Claim
128 words
The method of claim 53 wherein the biomolecules are selected from the group consisting of a globular protein, a structural protein, a membrane protein, a cell attachment protein, a protein, a structural peptide, a membrane peptide, a cell attachment peptide, a peptide, an anti-inflammatory agent, an antibody, an antigen, an immunoglobulin, a defense agent, a catalyst, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a proteoglycan, a toxin, an antibiotic agent, an antibacterial agent, an antimicrobial agent, a regulatory agent, a transport agent, a fibrous agent, a blood agent, a clotting agent, a platelet agent, an antithrombotic agent, an anticoagulant agent, a polysaccharide, a carbohydrate, a fatty acid, a nucleic acid, a DNA segment, RNA segment, a lectin, a drug, a vitamin and a ligand.
Claim 67
Dependent Claim
31 words
The method of claim 53, wherein at least a portion of the surface forms at least one of a tube, a rod, a membrane, a balloon, a bag and a sheet.
Claim 68
Dependent Claim
92 words
The method of claim 53, wherein the surface comprises at least one of a biocompatible material selected from the group consisting of metal, titanium, titanium alloys, tin-nickel alloys, shape memory alloys, aluminum oxide, platinum, platinum alloys, stainless steel, MP35N stainless steel, elgiloy, stellite, pyrolytic carbon, silver carbon, glassy carbon, polymer, polyamide, polycarbonate, polyether, polyester, polyolefin, polyethylene, polypropylene, polystyrene, polyurethane, polyvinyl chloride, polyvinylpyrrolidone, silicone elastomer, fluoropolymer, polyacrylate, polyisoprene, polytetrafluoroethylene, rubber, ceramic, hydroxapatite, human protein, human tissue, animal protein, animal tissue, bone, skin, teeth, collagen, laminin, elastin, fibrin, wood, cellulose, compressed carbon and glass.
Claim 69
Dependent Claim
24 words
The method of claim 53, wherein the first or second guanidino moiety is formed by combining an amine moiety with a guanidino forming agent.
Claim 70
Dependent Claim
39 words
The method of claim 63, wherein the guanidino forming agent is selected from the group consisting of S-ethylthiouronium bromide, S-ethylthiouronium chloride, O-methylisourea, O-methylisouronium sulfate, O-methylisourea hydrogen sulfate, S-methylisothiourea, 2-methyl-1-nitroisourea, aminoiminomethanesulfonic acid, cyanamide, cyanoguanide, dicyandiamide, 3,5-dimethyl-1-guanylpyrazole nitrate and 3,5-dimethyl pyrazole.
Claim 71
Independent Claim
132 words
A method of forming a crosslinked coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, a first 1,2 dicarbonyl moiety being disposed on the surface; (b) providing two or more biomolecules, the biomolecules comprising a guanidino moiety and a second 1,2 dicarbonyl moiety; (c) combining the biomolecules with the surface; and (d) allowing the guanidino moieties to combine with the first and second 1,2 dicarbonyl moieties to form covalent bonds, the bonds immobilizing and crosslinking the biomolecules on the surface, the immobilized and crosslinked biomolecules forming the coating.
Claim 72
Independent Claim
132 words
A method of forming a crosslinked coating on a surface of a medical device, the coating imparting improved biocompatibility characteristics to the surface, the surface being suitable for contacting bodily tissues or fluids in or temporarily removed from a living mammalian subject, the method comprising: (a) providing the medical device, the device having a suitable biomaterial forming the surface, a first 1,2 dicarbonyl moiety being disposed on the surface; (b) providing two or more biomolecules, the biomolecules comprising a guanidino moiety and a second 1,2 dicarbonyl moiety; (c) combining the biomolecules with the surface; and (d) allowing the guanidino moieties to combine with the first and second 1,2 dicarbonyl moieties to form covalent bonds, the bonds immobilizing and crosslinking the biomolecules on the surface, the immobilized and crosslinked biomolecules forming the coating.
Claim 73
Dependent Claim
13 words
The method of claim 65, further comprising the addition of a stabilizing agent.
Claim 74
Independent Claim
11 words
The method of claim wherein the stabilizing agent is borate ion.
Claim 75
Dependent Claim
72 words
The method of claim 65, wherein the medical device is selected from the group consisting of a blood-contacting medical device, a tissue-contacting medical device, a bodily fluid-contacting medical device, an implantable medical device, an extracorporeal medical device, a blood oxygenator, a blood pump, tubing for carrying blood, an endoprosthesis medical device, a vascular graft, a stent, a pacemaker lead, a heart valve, temporary intravascular medical device, a catheter and a guide wire.
Claim 76
Dependent Claim
14 words
The method of claim 65, wherein the guanidino moiety is an arginine amino acid.
Claim 77
Dependent Claim
12 words
The method of claim 65, wherein the biomolecules are naturally occurring biomolecules.
Claim 78
Dependent Claim
12 words
The method of claim 65, wherein the biomolecules are chemically synthesized biomolecules.
Claim 79
Dependent Claim
128 words
The method of claim 65, wherein the biomolecules are selected from the group consisting of a globular protein, a structural protein, a membrane protein, a cell attachment protein, a protein, a structural peptide, a membrane peptide, a cell attachment peptide, a peptide, an anti-inflammatory agent, an antibody, an antigen, an immunoglobulin, a defense agent, a catalyst, an enzyme, a hormone, a growth factor, a neurotransmitter, a cytokine, a proteoglycan, a toxin, an antibiotic agent, an antibacterial agent, an antimicrobial agent, a regulatory agent, a transport agent, a fibrous agent, a blood agent, a clotting agent, a platelet agent, an antithrombotic agent, an anticoagulant agent, a polysaccharide, a carbohydrate, a fatty acid, a nucleic acid, a DNA segment, RNA segment, a lectin, a drug, a vitamin and a ligand.
Claim 80
Dependent Claim
31 words
The method of claim 65, wherein at least a portion of the surface forms at least one of a tube, a rod, a membrane, a balloon, a bag and a sheet.
Claim 81
Dependent Claim
92 words
The method of claim 65, wherein the surface comprises at least one of a biocompatible material selected from the group consisting of metal, titanium, titanium alloys, tin-nickel alloys, shape memory alloys, aluminum oxide, platinum, platinum alloys, stainless steel, MP35N stainless steel, elgiloy, stellite, pyrolytic carbon, silver carbon, glassy carbon, polymer, polyamide, polycarbonate, polyether, polyester, polyolefin, polyethylene, polypropylene, polystyrene, polyurethane, polyvinyl chloride, polyvinylpyrrolidone, silicone elastomer, fluoropolymer, polyacrylate, polyisoprene, polytetrafluoroethylene, rubber, ceramic, hydroxapatite, human protein, human tissue, animal protein, animal tissue, bone, skin, teeth, collagen, laminin, elastin, fibrin, wood, cellulose, compressed carbon and glass.
Claim 82
Dependent Claim
21 words
The method of claim 65, wherein the guanidino moiety is formed by combining an amine moiety with a guanidino forming agent.
Claim 83
Dependent Claim
33 words
The method of claim 75, wherein the guanidino forming agent is selected from the group consisting of S-ethylthiouronium bromide, S-ethylthiouronium chloride, O-methylisourea, O-methylisouronium sulfate, O-methylisourea hydrogen sulfate, S-methylisothiourea, 2-methyl-1-nitroisourea, aminoiminomethanesulfonic acid, cyanamide, cyanoguanide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2003-03-07 | 2003-09-06 | 2004-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-03-07 | 2007-09-06 | 2008-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-03-07 | 2011-09-06 | 2012-03-07 | $7700.00 | Window Closed / Lapsed |