Patents by Inventor Thomas G. Kozma
Thomas G. Kozma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20150150696Abstract: Bioactive-coated medical devices are provided, including coated vascular stents. The medical device coating can include a coating layer posited over at least a portion of the medical device surface, and can include a butyl methacrylate polymer or an ethylene-vinyl acetate copolymer in combination with a bioactive material that can function as both an immunosuppressive agent and an antiproliferative agent. Optionally, multilayer coatings can further include an adhesion promoting layer comprising parylene positioned between the coating layer and the medical device surface, a porous layer comprising butyl methacrylate positioned over at least a portion of the coating layer, or both. The coating layer preferably comprises between about 0.5 and 2.0 ?g/mm2 of the bioactive material on the outer surface of the medical device. The bioactive material can be absorbed into the coating layer, which can have a thickness of between about 0.5 ?m to about 5 ?m.Type: ApplicationFiled: February 13, 2015Publication date: June 4, 2015Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
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Patent number: 8945206Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one coating layer 16 posited on one surface of the structure; and at least one layer 18 of a bioactive material posited on at least a portion of the coating layer 16, wherein the coating layer 16 provides for the controlled release of the bioactive material from the coating layer. In addition, at least one porous layer 20 can be posited over the bioactive material layer 18, wherein the porous layer includes a polymer and provides for the controlled release of the bioactive material therethrough. Preferably, the structure 12 is a coronary stent. The porous layer 20 includes a polymer applied preferably by vapor or plasma deposition and provides for a controlled release of the bioactive material.Type: GrantFiled: June 23, 2009Date of Patent: February 3, 2015Assignee: Cook Medical Technologies LLCInventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
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Patent number: 8920516Abstract: A graft prostheses (11), materials and method for implanting, transplanting, replacing, or repairing a part of a patient. The graft prosthesis includes a purified, collagen-based matrix structure removed from a submucosa tissue source. The submucosa tissue source is purified by disinfection and removal steps to deactivate and remove contaminants, thereby making the purified structure biocompatible and suitable for grafting on and/or in a patient.Type: GrantFiled: January 26, 2010Date of Patent: December 30, 2014Assignees: Cook Biotech Incorporated, Cook Medical Technologies LLCInventors: William A. Cook, Michael C. Hiles, Thomas G. Kozma, Umesh H. Patel
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Patent number: 8920515Abstract: A graft prostheses (11), materials and method for implanting, transplanting, replacing, or repairing a part of a patient. The graft prosthesis includes a purified, collagen-based matrix structure removed from a submucosa tissue source. The submucosa tissue source is purified by disinfection and removal steps to deactivate and remove contaminants, thereby making the purified structure biocompatible and suitable for grafting on and/or in a patient.Type: GrantFiled: October 31, 2007Date of Patent: December 30, 2014Assignees: Cook Biotech Incorporated, Cook Medical Technologies LLCInventors: William A. Cook, Michael C. Hiles, Thomas G. Kozma, Umesh H. Patel
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Patent number: 8808392Abstract: A graft prostheses (11), materials and method for implanting, transplanting, replacing, or repairing a part of a patient. The graft prosthesis includes a purified, collagen-based matrix structure removed from a submucosa tissue source. The submucosa tissue source is purified by disinfection and removal steps to deactivate and remove contaminants, thereby making the purified structure biocompatible and suitable for grafting on and/or in a patient.Type: GrantFiled: October 31, 2007Date of Patent: August 19, 2014Assignees: Cook Biotech Incorporated, Cook Medical Technologies LLCInventors: William A. Cook, Michael C. Hiles, Thomas G. Kozma, Umesh H. Patel
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Patent number: 8758428Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one coating layer 16 posited on one surface of the structure; and at least one layer 18 of a bioactive material posited on at least a portion of the coating layer 16, wherein the coating layer 16 provides for the controlled release of the bioactive material from the coating layer. In addition, at least one porous layer 20 can be posited over the bioactive material layer 18, wherein the porous layer includes a polymer and provides for the controlled release of the bioactive material therethrough. Preferably, the structure 12 is a coronary stent. The porous layer 20 includes a polymer applied preferably by vapor or plasma deposition and provides for a controlled release of the bioactive material.Type: GrantFiled: October 31, 2007Date of Patent: June 24, 2014Assignee: Cook Medical Technologies LLCInventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, William D. Voorhees, III, Thomas G. Kozma
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Patent number: 8716227Abstract: A graft prostheses (11), materials and method for implanting, transplanting, replacing, or repairing a part of a patient. The graft prosthesis includes a purified, collagen-based matrix structure removed from a submucosa tissue source. The submucosa tissue source is purified by disinfection and removal steps to deactivate and remove contaminants, thereby making the purified structure biocompatible and suitable for grafting on and/or in a patient.Type: GrantFiled: October 31, 2007Date of Patent: May 6, 2014Assignee: Cook Biotech IncorporatedInventors: William A. Cook, Michael C. Hiles, Thomas G. Kozma, Umesh H. Patel
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Patent number: 8556962Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one coating layer 16 posited on one surface of the structure; and at least one layer 18 of a bioactive material posited on at least a portion of the coating layer 16, wherein the coating layer 16 provides for the controlled release of the bioactive material from the coating layer. In addition, at least one porous layer 20 can be posited over the bioactive material layer 18, wherein the porous layer includes a polymer and provides for the controlled release of the bioactive material therethrough. Preferably, the structure 12 is a coronary stent. The porous layer 20 includes a polymer applied preferably by vapor or plasma deposition and provides for a controlled release of the bioactive material.Type: GrantFiled: May 25, 2005Date of Patent: October 15, 2013Assignee: Cook Medical Technologies LLCInventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
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Patent number: 8469943Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one coating layer 16 posited on one surface of the structure; and at least one layer 18 of a bioactive material posited on at least a portion of the coating layer 16, wherein the coating layer 16 provides for the controlled release of the bioactive material from the coating layer. In addition, at least one porous layer 20 can be posited over the bioactive material layer 18, wherein the porous layer includes a polymer and provides for the controlled release of the bioactive material therethrough. Preferably, the structure 12 is a coronary stent. The porous layer 20 includes a polymer applied preferably by vapor or plasma deposition and provides for a controlled release of the bioactive material.Type: GrantFiled: October 12, 2010Date of Patent: June 25, 2013Assignee: Cook Medical Technologies LLCInventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
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Patent number: 8439942Abstract: A medical device (40) including a collagenous biomaterial (10) for causing embolus and treating an aneurysm. The collagenous biomaterial (10) includes a small intestine submucosa (12) that is configured into various components (16) for causing a vascular occlusion or a packing aneurysm lumen.Type: GrantFiled: December 3, 2010Date of Patent: May 14, 2013Assignee: Cook Bioteck IncorporatedInventors: Christopher J. Moran, Thomas G. Kozma, Umesh H. Patel, Mark W. Bleyer
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Patent number: 8257433Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract, and at least one layer 18 of an immunosuppressive agent posited over at least one surface of the structure 12. Optionally, the device 10 can include at least one porous, preferably polymeric layer 20 posited over the layer 18 of immunosuppressive agent, and can alternatively or additionally include at least one coating layer 16 posited on one surface of the structure 12, the at least one layer 18 of immunosuppessive agent being posited in turn on at least a portion of the coating layer 16. The porous layer 20 and the coating layer 16 each provide for the controlled release of the bioactive material from the device 10. The structure 12 is preferably configured as a coronary stent. The polymer of the porous layer 20 is preferably applied by vapor or plasma deposition.Type: GrantFiled: October 31, 2007Date of Patent: September 4, 2012Assignee: Cook Medical Technologies LLCInventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
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Publication number: 20110196479Abstract: A coated implantable medical device includes a structure adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one coating layer posited on one surface of the structure; and at least one layer of a bioactive material posited on at least a portion of the coating layer. Preferably the structure is a stent graft.Type: ApplicationFiled: April 18, 2011Publication date: August 11, 2011Applicants: Cook Incorporated, MED Institute, Inc.Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Feamot, Thomas G. Kozma, William D. Voorhees, III
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Publication number: 20110077679Abstract: A medical device (40) including a collagenous biomaterial (10) for causing embolus and treating an aneurysm. The collagenous biomaterial (10) includes a small intestine submucosa (12) that is configured into various components (16) for causing a vascular occlusion or a packing aneurysm lumen.Type: ApplicationFiled: December 3, 2010Publication date: March 31, 2011Inventors: Christopher J. Moran, Thomas G. Kozma, Umesh H. Patel, Mark W. Bleyer
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Publication number: 20110076329Abstract: A graft prostheses (11), materials and method for implanting, transplanting, replacing, or repairing a part of a patient. The graft prosthesis includes a purified, collagen-based matrix structure removed from a submucosa tissue source. The submucosa tissue source is purified by disinfection and removal steps to deactivate and remove contaminants, thereby making the purified structure biocompatible and suitable for grafting on and/or in a patient.Type: ApplicationFiled: January 26, 2010Publication date: March 31, 2011Inventors: William A. Cook, Michael C. Hiles, Thomas G. Kozma, Umesh H. Patel
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Patent number: 7901453Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract, and at least one layer 18 of an immunosuppressive agent posited over at least one surface of the structure 12. Optionally, the device 10 can include at least one porous, preferably polymeric layer 20 posited over the layer 18 of immunosuppressive agent, and can alternatively or additionally include at least one coating layer 16 posited on one surface of the structure 12, the at least one layer 18 of immunosuppressive agent being posited in turn on at least a portion of the coating layer 16. The porous layer 20 and the coating layer 16 each provide for the controlled release of the bioactive material from the device 10. The structure 12 is preferably configured as a coronary stent. The polymer of the porous layer 20 is preferably applied by vapor or plasma deposition.Type: GrantFiled: October 31, 2007Date of Patent: March 8, 2011Assignees: Cook Incorporated, MED Institute, Inc.Inventors: Anthony O. Ragheb, Neal E. Fearnot, William D. Voorhees, III, Thomas G. Kozma, Brian L. Bates, Thomas A. Osborne
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Patent number: 7896914Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one coating layer 16 posited on one surface of the structure; and at least one layer 18 of a bioactive material posited on at least a portion of the coating layer 16, wherein the coating layer 16 provides for the controlled release of the bioactive material from the coating layer. In addition, at least one porous layer 20 can be posited over the bioactive material layer 18, wherein the porous layer includes a polymer and provides for the controlled release of the bioactive material therethrough. Preferably, the structure 12 is a coronary stent. The porous layer 20 includes a polymer applied preferably by vapor or plasma deposition and provides for a controlled release of the bioactive material.Type: GrantFiled: October 31, 2007Date of Patent: March 1, 2011Assignees: Cook Incorporated, MED Institute, Inc.Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
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Publication number: 20110046723Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one coating layer 16 posited on one surface of the structure; and at least one layer 18 of a bioactive material posited on at least a portion of the coating layer 16, wherein the coating layer 16 provides for the controlled release of the bioactive material from the coating layer. In addition, at least one porous layer 20 can be posited over the bioactive material layer 18, wherein the porous layer includes a polymer and provides for the controlled release of the bioactive material therethrough. Preferably, the structure 12 is a coronary stent. The porous layer 20 includes a polymer applied preferably by vapor or plasma deposition and provides for a controlled release of the bioactive material.Type: ApplicationFiled: October 12, 2010Publication date: February 24, 2011Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
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Patent number: 7867275Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one coating layer 16 posited on one surface of the structure; and at least one layer 18 of a bioactive material posited on at least a portion of the coating layer 16, wherein the coating layer 16 provides for the controlled release of the bioactive material from the coating layer. In addition, at least one porous layer 20 can be posited over the bioactive material layer 18, wherein the porous layer includes a polymer and provides for the controlled release of the bioactive material therethrough. Preferably, the structure 12 is a coronary stent. The porous layer 20 includes a polymer applied preferably by vapor or plasma deposition and provides for a controlled release of the bioactive material.Type: GrantFiled: September 1, 2006Date of Patent: January 11, 2011Assignees: Cook Incorporated, MED Institute, Inc.Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, William D. Voorhees, III, Thomas G. Kozma
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Patent number: 7862605Abstract: A coated implantable medical device 10 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract, and at least one layer 18 of a bioactive agent posited over at least one surface of the structure 12. Optionally, the device 10 can include at least one porous, preferably polymeric layer 20 posited over the layer 18 of bioactive agent, and can alternatively or additionally include at least one coating layer 16 posited on one surface of the structure 12, the at least one layer 18 of bioactive agent being posited in turn on at least a portion of the coating layer 16. The porous layer 20 and the coating layer 16 each provide for the controlled release of the bioactive material from the device 10. The structure 12 is preferably configured as a stent graft. The polymer of the porous layer 20 is preferably applied by vapor or plasma deposition.Type: GrantFiled: November 27, 2006Date of Patent: January 4, 2011Assignees: MED Institute, Inc., Cook IncorporatedInventors: Anthony O. Ragheb, Brian L. Bates, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
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Patent number: 7857825Abstract: A medical device (40) including a collagenous biomaterial (10) for causing embolus and treating an aneurysm. The collagenous biomaterial (10) includes a small intestine submucosa (12) that is configured into various components (16) for causing a vascular occlusion or a packing aneurysm lumen.Type: GrantFiled: November 20, 2003Date of Patent: December 28, 2010Assignee: Cook Biotech IncorporatedInventors: Christopher J. Moran, Mark W. Bleyer, Thomas G. Kozma, Umesh H. Patel