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).

  • Publication number: 20080147166
    Abstract: 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: Application
    Filed: October 31, 2007
    Publication date: June 19, 2008
    Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, William D. Voorhees, Thomas G. Kozma
  • Publication number: 20080132992
    Abstract: 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: Application
    Filed: June 5, 2007
    Publication date: June 5, 2008
    Applicants: Cook Incorporated, MED Institute, Inc.
    Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees
  • Publication number: 20040180042
    Abstract: 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: Application
    Filed: March 26, 2004
    Publication date: September 16, 2004
    Inventors: William A. Cook, Michael C. Hiles, Thomas G. Kozma, Umesh H. Patel
  • Publication number: 20040158185
    Abstract: 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: Application
    Filed: November 20, 2003
    Publication date: August 12, 2004
    Inventors: Christopher J. Moran, Mark W. Bleyer, Thomas G. Kozma, Umesh H. Patel
  • Patent number: 6774278
    Abstract: 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: Grant
    Filed: February 20, 1998
    Date of Patent: August 10, 2004
    Assignees: Cook Incorporated, MED Institute, Inc.
    Inventors: Anthony O. Ragheb, Brian L. Bates, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III, Anthony H. Gershlick
  • Patent number: 6730064
    Abstract: 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 is 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: Grant
    Filed: May 7, 2001
    Date of Patent: May 4, 2004
    Assignees: Cook Incorporated, Med Institute Inc.
    Inventors: Anthony O. Ragheb, Brian L. Bates, Neal E. Fearnot, William D. Voorhees, III, Thomas G. Kozma
  • Publication number: 20040047909
    Abstract: Methods of making coated implantable medical devices are provided. The methods include positioning a first layer comprising a bioactive on at least a portion of a structure, and positioning at least one porous layer over the first layer. The at least one porous layer has a thickness adequate to provide a controlled release of the bioactive.
    Type: Application
    Filed: April 14, 2003
    Publication date: March 11, 2004
    Inventors: Anthony O. Ragheb, Neal E. Fearnot, William D. Voorhees, Thomas G. Kozma, Brian L. Bates, Thomas A. Osborne
  • Patent number: 6530951
    Abstract: A silver 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 layer 18 of a bioactive material posited on one surface of structure 12; and at least one porous layer 20 posited over the bioactive material layer 18 posited on one surface of structure 12 and the bioactive-material-free surface. Also included is a layer or impregnation of silver 45. Preferably, the structure 12 is a coronary stent. The porous layer 20 is comprised of a polymer applied preferably by vapor or plasma deposition and provides a controlled release of the bioactive material. It is particularly preferred that the polymer is a polyamide, parylene or a parylene derivative, which is deposited without solvents, heat or catalysts, merely by condensation of a monomer vapor. Silver is included as a base material, coating or included in a carrier, drug, medicament material utilized with the implantable stent.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: March 11, 2003
    Assignees: Cook Incorporated, MED Institute Inc.
    Inventors: Brian L. Bates, Neal E. Fearnot, Thomas G. Kozma, Thomas A. Osborne, Anthony O. Ragheb, Joseph W. Roberts, William D. Voorhees, III
  • Publication number: 20030041386
    Abstract: 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: Application
    Filed: March 2, 2001
    Publication date: March 6, 2003
    Inventors: William A. Cook, Michael C. Hiles, Thomas G. Kozma, Umesh H. Patel
  • Publication number: 20030036794
    Abstract: 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: Application
    Filed: August 19, 2002
    Publication date: February 20, 2003
    Applicant: Cook Incorporated
    Inventors: Anthony O. Ragheb, Neal E. Fearnot, William D. Voorhees, Thomas G. Kozma, Brian L. Bates, Thomas A. Osborne
  • Publication number: 20030028243
    Abstract: 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: Application
    Filed: August 14, 2002
    Publication date: February 6, 2003
    Applicant: Cook Incorporated
    Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, William D. Voorhees, Thomas G. Kozma
  • Publication number: 20030028244
    Abstract: 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: Application
    Filed: August 14, 2002
    Publication date: February 6, 2003
    Applicant: Cook Incorporated
    Inventors: Brian L. Bates, Anthony O. Ragheb, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees
  • Publication number: 20020032414
    Abstract: 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 is 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: Application
    Filed: May 7, 2001
    Publication date: March 14, 2002
    Inventors: Anthony O. Ragheb, Brian L. Bates, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees
  • Patent number: 6299604
    Abstract: 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 is 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: Grant
    Filed: August 20, 1999
    Date of Patent: October 9, 2001
    Assignees: Cook Incorporated, MED Institute Inc.
    Inventors: Anthony O. Ragheb, Brian L. Bates, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
  • Patent number: 6206931
    Abstract: 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: Grant
    Filed: August 22, 1997
    Date of Patent: March 27, 2001
    Assignees: Cook Incorporated, Cook Biotech, Inc., MED Institute, Inc.
    Inventors: William A. Cook, Michael C. Hiles, Thomas G. Kozma, Umesh H. Patel
  • Patent number: 6096070
    Abstract: 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 layer 18 of a bioactive material posited on one surface of structure 12; and at least one porous layer 20 posited over the bioactive material layer 18 posited on one surface of structure (12) and the bioactive-material-free surface. Preferably, the structure 12 is a coronary stent. The porous layer 20 is comprised of a polymer applied preferably by vapor or plasma deposition and provides a controlled release of the bioactive material. It is particularly preferred that the polymer is a polyamide, parylene or a parylene derivative, which is deposited without solvents, heat or catalysts, merely by condensation of a monomer vapor. Also disclosed is the method of manufacture of the device 10, as well as a method of using it in medical treatments.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: August 1, 2000
    Assignees: MED Institute Inc., Cook Inc.
    Inventors: Anthony O. Ragheb, Brian L. Bates, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
  • Patent number: 5873904
    Abstract: A silver implantable medical device 29 includes a structure 12 adapted for introduction into the vascular system, esophagus, trachea, colon, biliary tract, or urinary tract; at least one layer 18 of a bioactive material posited on one surface of structure 12; and at least one porous layer 20 posited over the bioactive material layer 18 posited on one surface of structure (12) and the bioactive-material-free surface. Also included is a layer or impregnation of silver 45. Preferably, the structure 12 is a coronary stent. The porous layer 20 is comprised of a polymer applied preferably by vapor or plasma deposition and provides a controlled release of the bioactive material. It is particularly preferred that the polymer is a polyamide, parylene or a parylene derivative, which is deposited without solvents, heat or catalysts, merely by condensation of a monomer vapor. Silver is included as a base material, coating or included in a carrier, drug, medicant material utilized with the implantable stent.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: February 23, 1999
    Assignees: Cook Incorporated, MED Institute, Inc.
    Inventors: Anthony O. Ragheb, Brian L. Bates, Neal E. Fearnot, Thomas A. Osborne, Thomas G. Kozma, Joseph W. Roberts, William D. Voorhees, III
  • Patent number: 5824049
    Abstract: 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 layer 18 of a bioactive material posited on one surface of structure 12; and at least one porous layer 20 posited over the bioactive material layer 18 posited on one surface of structure (12) and the bioactive-material-free surface. Preferably, the structure 12 is a coronary stent. The porous layer 20 is comprised of a polymer applied preferably by vapor or plasma deposition and provides a controlled release of the bioactive material. It is particularly preferred that the polymer is a polyamide, parylene or a parylene derivative, which is deposited without solvents, heat or catalysts, merely by condensation of a monomer vapor. Also disclosed is the method of manufacture of the device 10, as well as a method of using it in medical treatments.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: October 20, 1998
    Assignee: MED Institute, Inc.
    Inventors: Anthony O. Ragheb, Brian L. Bates, Neal E. Fearnot, Thomas G. Kozma, William D. Voorhees, III
  • Patent number: 5609629
    Abstract: 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 layer 18 of a bioactive material positioned over the structure 12; and at least one porous layer 20 positioned over the bioactive material layer 18. Preferably, the structure 12 is a coronary stent, and the bioactive material is at least one of heparin, dexamethasone or a dexamethasone derivative. The device 10 includes layers 18 and 22 of heparin and dexamethasone, the layer 22 of dexamethasone being positioned above the layer 18 of heparin. The layers of bioactive material also can be individual materials or a combination of different materials. Unexpectedly, the more soluble heparin markedly promotes the release of the less soluble dexamethasone above it. The porous layer 20 is composed of a polymer applied by vapor or plasma deposition and provides a controlled release of the bioactive material.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 11, 1997
    Assignee: MED Institute, Inc.
    Inventors: Neal E. Fearnot, Thomas G. Kozma, Anthony O. Ragheb, William D. Voorhees