Patents by Inventor William M. Colone
William M. Colone 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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Patent number: 8158041Abstract: Extruded, stretched, sintered tubular PTFE materials are produced which are suited for use in the medical field as liners and covers for expandable stents. The PTFE materials have an unusually low REC (Radial Expansion Coefficient) and RER (Radial Expansion Ratio).Type: GrantFiled: December 28, 2007Date of Patent: April 17, 2012Assignee: Bard Peripheral Vascular, Inc.Inventor: William M. Colone
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Patent number: 7465483Abstract: Extruded, stretched, sintered tubular PTFE materials are produced which are suited for use in the medical field as liners and covers for expandable stents. The PTFE materials have an unusually low REC (Radial Expansion Coefficient) and RER (Radial Expansion Ratio).Type: GrantFiled: February 5, 2004Date of Patent: December 16, 2008Assignee: C.R.Bard Inc.Inventor: William M. Colone
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Publication number: 20080143011Abstract: Extruded, stretched, sintered tubular PTPE materials are produced which are suited for use in the medical field as liners and covers for expandable stents. The PTFE materials have an unusually low REC (Radial Expansion Coefficient) and RER (Radial Expansion Ratio).Type: ApplicationFiled: December 28, 2007Publication date: June 19, 2008Inventor: William M. Colone
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Publication number: 20040157024Abstract: Extruded, stretched, sintered tubular PTFE materials are produced which are suited for use in the medical field as liners and covers for expandable stents. The PTFE materials have an unusually low REC (Radial Expansion Coefficient) and RER (Radial Expansion Ratio).Type: ApplicationFiled: February 5, 2004Publication date: August 12, 2004Inventor: William M. Colone
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Patent number: 6620190Abstract: Extruded, stretched, sintered tubular PTFE materials are produced which are suited for use in the medical field as liners and covers for expandable stents. The PTFE materials have an unusually low REC (Radial Expansion Coefficient) and RER (Radial Expansion Ratio).Type: GrantFiled: December 26, 1996Date of Patent: September 16, 2003Assignee: Impra, Inc., a subsidiary of C.R. Bard, Inc.Inventor: William M. Colone
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Patent number: 6605119Abstract: A method is disclosed for making vascular prostheses from ePTFE said prostheses having a diameter which is larger, and a wall thickness which is smaller than previously achievable using ram extrusion techniques. The method consists of extruding a PTFE tube, finish processing the tube into an ePTFE tube, laterally dilating it by expansion in incremental steps, calendering the tube after each dilating step, while the tube is being maintained at an elevated temperature. Once the tube is dilated it can be sintered with another tube to form a laminate. Alternatively, a wire stent may be joined with one or more tubes, thereby biasing the laminate to a cylindrical configuration.Type: GrantFiled: November 1, 2000Date of Patent: August 12, 2003Assignee: Endomed, Inc.Inventors: William M. Colone, Kevin G. Farl, Barbara L. Teeter, William L. Creer, Joseph B. Sinnott
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Patent number: 6443981Abstract: A method is disclosed for making vascular prostheses from ePTFE said prostheses having a diameter which is larger, and a wall thickness which is smaller than previously achievable using ram extrusion techniques. The method consists of extruding a PTFE tube, finish processing the tube into an ePTFE tube, laterally dilating it by expansion in incremental steps, calendering the tube after each dilating step, while the tube is being maintained at an elevated temperature. Once the tube is dilated it can be sintered with another tube to form a laminate. Alternatively, a wire stent may be joined with one or more tubes, thereby biasing the laminate to a cylindrical configuration.Type: GrantFiled: May 19, 2000Date of Patent: September 3, 2002Assignee: Endomed, Inc.Inventors: William M. Colone, Kevin G. Farl, Barbara L. Teeter, William L. Creer, Joseph B. Sinnott
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Patent number: 6402779Abstract: An intraluminal device such as a stent graft is formed of a conformable ePTFE tube and preferably a compressed self-expanding stent affixed to the tube. The conformable tube is made by a special process which insures that the tube is radially deformable up to a predetermined diameter without exceeding the plastic deformation limit of the tube. The stent has a relaxed diameter larger than the diameter of the expanded tube after insertion so that the tube is biased to a cylindrical shape. The process for making the tube involves progressively dilating a small diameter extruded tube until a desired diameter is achieved. The tube is then contracted on a small diameter mandrel by heating.Type: GrantFiled: July 26, 1999Date of Patent: June 11, 2002Assignee: Endomed, Inc.Inventors: William M. Colone, Kevin G. Farl, Barbara L. Teeter, William L. Creer, Joseph B. Sinnott
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Patent number: 6187054Abstract: A method is disclosed for making vascular prostheses from ePTFE said prostheses having a diameter which is larger, and a wall thickness which is smaller than previously achievable using ram extrusion techniques. The method consists of extruding a PTFE tube, finish processing the tube into an ePTFE tube, laterally dilating it by expansion in incremental steps, calendering the tube after each dilating step, while the tube is being maintained at an elevated temperature. Once the tube is dilated it can be sintered with another tube to form a laminate. Alternatively, a wire stent may be joined with one or more tubes, thereby biasing the laminate to a cylindrical configuration.Type: GrantFiled: February 4, 1999Date of Patent: February 13, 2001Assignee: Endomed Inc.Inventors: William M. Colone, Kevin G. Farl, Barbara L. Teeter, William L. Creer, Joseph B. Sinnott
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Patent number: 6183481Abstract: A device for disposing a radially self-expanding endoprosthesis in a body lumen. The implantation device includes an elongated catheter having a distal end and an outer surface over which the endoprosthesis is placed a sheath disposed to releasably surround at least a portion of the endoprosthesis, holding the endoprosthesis on the catheter in a radially contracted state, and a flexible elongation release element cooperating with the sheath. The sheath is released, permitting the surrounded portion of the endoprosthesis to expand, by axial withdrawal of the release element.Type: GrantFiled: September 22, 1999Date of Patent: February 6, 2001Assignee: Endomed Inc.Inventors: Peter Y. Lee, William M. Colone, Barbara L. Teeter, William L. Creer, Kevin G. Farl
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Patent number: 5152782Abstract: A non-porous coated PTFE graft includes a PTFE tube having a conventional porous inner cylindrical wall and a non-porous elastomeric coating applied over at least a portion of the outer cylindrical wall of the PTFE tube to render such portion of the outer cylindrical wall non-porous. The elastomeric coating is made of polyurethane or another biocompatible non-porous elastomer and precludes tissue ingrowth into the outer cylindrical wall, minimizes suture hole bleeding, and increases suture retention strength, while reducing the incidence of serous weepage. The elastomeric coating is preferably applied by mounting the PTFE tube upon a mandrel of like diameter and either dip coating or spray coating all, or selected portions, of the PTFE tube with liquified polyurethane. After the polyurethane coating is completely dried, the non-porous vascular graft is removed form the mandrel and is ready for use.Type: GrantFiled: May 26, 1989Date of Patent: October 6, 1992Assignee: Impra, Inc.Inventors: Rajagopal R. Kowligi, Robert C. Farnan, William M. Colone, Linda V. Della Corna, Joseph B. Sinnott
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Patent number: 5104400Abstract: A vascular patch for closing an incision in a blood vessel includes a base layer of expanded polytetrafluoroethylene (PTFE) having an outer coating of an elastomeric, biocompatible material such as polyurethane to minimize suture hole bleeding. Suture guidelines are formed upon the ablumenal side of the PTFE base layer prior to application of the elastomeric coating to facilitate proper and consistent placement of sutures. A colorant is added to the elastomeric coating to identify the ablumenal side of the vascular patch. The vascular patch is made by mounting an expanded PTFE tube upon a mandrel and applying a water based PTFE ink as a helical stripe about the outer surface of the PTFE tube to form the suture guidelines. The striped PTFE tube is then dip-coated or spray-coated with the elastomeric coating to which the colorant has been added. The PTFE tube is slit to form a flat sheet from which vascular patches are cut.Type: GrantFiled: August 28, 1991Date of Patent: April 14, 1992Assignee: Impra, Inc.Inventors: Ramon Berguer, Robert C. Farnan, William M. Colone, Rajagopal R. Kowligi, Linda V. Della Corna, Joseph B. Sinnott
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Patent number: 5100422Abstract: A vascular patch for closing an incision in a blood vessel includes a base layer of expanded polytetrafluoroethylene (PTFE) having an outer coating of an elastomeric, biocompatible material such as polyurethane to minimize suture hole bleeding. Suture guidelines are formed upon the ablumenal side of the PFTE base layer prior to application of the elastomeric coating to facilitate proper and consistent placement of sutures. A colorant is added to the elastomeric coating to identify the ablumenal side of the vascular patch. The vascular patch is made by mounting an expanded PTFE tube upon a mandrel and applying a water based PFTE ink as a helical stripe about the outer surface of the PTFE tube to form the suture guidelines. The striped PTFE tube is then dip-coated or spray-coated with the elastomeric coating to which the colorant has been added. The PTFE tube is slit to form a flat sheet from which vascular patches are cut.Type: GrantFiled: May 26, 1989Date of Patent: March 31, 1992Assignee: Impra, Inc.Inventors: Ramon Berguer, Robert C. Farnan, William M. Colone, Rajagopal R. Kowligi, Linda V. Della Corna, Joseph B. Sinnott
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Patent number: 4955899Abstract: A longitudinally compliant PTFE graft is provided by compressing at least a portion of a porous PTFE tube along its longitudinal axis and coating at least the outer wall of the compressed portion of the PTFE tube with a biocompatible elastomer for allowing the compressed portion of the tube to be stretched along the longitudinal axis. The PTFE tube is compressed by pulling the tube over a cylindrical mandrel of like diameter and applying a compression force to the tube along its longitudinal axis. The compressed portion(s) is (are) secured against movement upon the mandrel, and a coating of liquified polyurethane or other biocompatible elastomer is then applied over at least the compressed portion(s) of the tube. The elastomeric coating may be applied by dip coating or spray coating techniques. After the elastomeric coating has dried, the completed graft is removed from the mandrel.Type: GrantFiled: May 26, 1989Date of Patent: September 11, 1990Assignee: Impra, Inc.Inventors: Linda V. Della Corna, Robert C. Farnan, William M. Colone, Rajagopal R. Kowligi
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Patent number: 4822341Abstract: A vascular access fistula includes a smooth, continuous PTFE tube having a hard sintered tube section integrally joined at its opposing ends with expanded PTFE tube sections. Inlet and outlet access port holes are formed in the hard sintered tube section to provide acute access to the fistula. A port collar surrounds the hard sintered tube section to facilitate the attachment of dual lumen tubing thereto. Following implantation of the access fistula, the dual lumen tubing temporarily extends through the skin to provide acute access while the access fistula heals. The port collar houses a slide valve which selectively couples the inlet and outlet access port holes to the dual lumen tubing for acute access. After the access fistula has healed, the slide valve is closed, the dual lumen tubing is cut off from the port collar, and chronic vascular access is provided by percutaneous cannulation of the implanted PTFE tube.Type: GrantFiled: November 20, 1987Date of Patent: April 18, 1989Assignee: Impra, Inc.Inventor: William M. Colone