Patents by Inventor Jamie Henderson
Jamie Henderson 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: 8475875Abstract: The present invention relates to methods and apparatus for manufacturing a treated web. The subject methods and apparatus involve the control of numerous variables, including, without limitation, web tension (both overall web tension as well as the web tension immediately before and after each individual blade), angle of entry of web into each blade, blade angle in relation to horizontal reference point, blade pressure against moving web, angle of exit of web from each blade, web speed, number of blades, the pressure of the leading nip rolls, the pressure of the trailing nip rolls, static control, thickness of each blade, bevel on each blade, oven cure temperature, oven cure dwell time, blade temperature and blade surfaces and edge conditions and blade finish.Type: GrantFiled: June 10, 2011Date of Patent: July 2, 2013Assignee: Nextec Applications, Inc.Inventors: Randy Meirowitz, Jamie Henderson, Michael Wang
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Patent number: 8257431Abstract: Methods of making multi-furcated grafts and, more particularly, a bifurcated graft from at least one ePTFE member are provided. Also provided are grafts made according to such methods.Type: GrantFiled: November 1, 2006Date of Patent: September 4, 2012Assignee: Boston Scientific Scimed, Inc.Inventors: Jamie Henderson, Krzysztof Sowinski, Ronald Rakos
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Publication number: 20110287180Abstract: The present invention relates to methods and apparatus for manufacturing a treated web. The subject methods and apparatus involve the control of numerous variables, including, without limitation, web tension (both overall web tension as well as the web tension immediately before and after each individual blade), angle of entry of web into each blade, blade angle in relation to horizontal reference point, blade pressure against moving web, angle of exit of web from each blade, web speed, number of blades, the pressure of the leading nip rolls, the pressure of the trailing nip rolls, static control, thickness of each blade, bevel on each blade, oven cure temperature, oven cure dwell time, blade temperature and blade surfaces and edge conditions and blade finish.Type: ApplicationFiled: June 10, 2011Publication date: November 24, 2011Inventors: Randy Meirowitz, Jamie Henderson, Michael Wang
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Patent number: 7980283Abstract: The present invention relates to methods and apparatus for manufacturing a treated web. The subject methods and apparatus involve the control of numerous variables, including, without limitation, web tension (both overall web tension as well as the web tension immediately before and after each individual blade), angle of entry of web into each blade, blade angle in relation to horizontal reference point, blade pressure against moving web, angle of exit of web from each blade, web speed, number of blades, the pressure of the leading nip rolls, the pressure of the trailing nip rolls, static control, thickness of each blade, bevel on each blade, oven cure temperature, oven cure dwell time, blade temperature and blade surfaces and edge conditions and blade finish.Type: GrantFiled: January 16, 2008Date of Patent: July 19, 2011Assignee: Nextec Applications, Inc.Inventors: Michael Wang, Randy Meirowitz, Jamie Henderson
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Patent number: 7871550Abstract: A method of making an ePTFE tubular structure includes the steps of (a) forming a tube of polytetrafluoroethylene; (b) longitudinally stretching the polytetrafluoroethylene tube to form an expanded polytetrafluoroethylene tube, where the expanded polytetrafluoroethylene tube includes fibrils oriented in a longitudinal direction of the tube and nodes oriented in a circumferential direction of the tube; and (c) placing the expanded polytetrafluoroethylene tube circumferentially exterior to a longitudinal foreshortening and radially expanding mechanism, where radial pressure from the foreshortening mechanism radially expands the ePTFE tubular structure and reorients the fibrils non-longitudinally.Type: GrantFiled: February 11, 2004Date of Patent: January 18, 2011Assignee: Boston Scientific Scimed, Inc.Inventors: Krzysztof Sowinski, Jamie Henderson, Howard Wolek
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Patent number: 7857843Abstract: A differentially expanded vascular graft for implantation within a body includes a PTFE tube formed of a homogeneous material. The PTFE tube has a longitudinal first portion which has been longitudinally expanded, and a longitudinal second portion which has been longitudinally expanded. The first and second portions have respective microstructures which are different from one another. A method and apparatus for making the differentially expanded vascular graft of the present invention facilitates the formation of the various expanded portions of the PTFE tube.Type: GrantFiled: December 31, 2004Date of Patent: December 28, 2010Assignee: Boston Scientific Scimed, Inc.Inventor: Jamie Henderson
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Patent number: 7806922Abstract: The vascular graft includes a PTFE tube having non-expanded portions formed from sintering a PTFE green tube extrudate. The non-expanded portions are distributed longitudinally along the PTFE tube. The PTFE tube also has expanded portions formed subsequent to the sintering of the PTFE green tube extrudate. The expanded and non-expanded portions are integral with one another, and alternate with one another along the length of the PTFE tube. The expanded and non-expanded portions each have a respective stiffness, where the stiffness of the non-expanded portion is greater than that of the expanded portion.Type: GrantFiled: December 31, 2004Date of Patent: October 5, 2010Assignee: Boston Scientific Scimed, Inc.Inventors: Jamie Henderson, Dennis Kujawski
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Patent number: 7655035Abstract: The vascular graft includes a conduit structure having outer and inner wall surfaces. The conduit structure includes a longitudinal central portion having a flexibility. The conduit structure further includes a pair of longitudinal intermediate portions each of which are integral with the central portion and located longitudinally such that the central portion is between the intermediate portions. The intermediate portions each have a flexibility which is less than the flexibility of the central portion.Type: GrantFiled: October 5, 2005Date of Patent: February 2, 2010Assignee: Boston Scientific Scimed, Inc.Inventors: Krzysztof Sowinski, Jamie Henderson
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Publication number: 20090181589Abstract: The present invention relates to methods and apparatus for manufacturing a treated web. The subject methods and apparatus involve the control of numerous variables, including, without limitation, web tension (both overall web tension as well as the web tension immediately before and after each individual blade), angle of entry of web into each blade, blade angle in relation to horizontal reference point, blade pressure against moving web, angle of exit of web from each blade, web speed, number of blades, the pressure of the leading nip rolls, the pressure of the trailing nip rolls, static control, thickness of each blade, bevel on each blade, oven cure temperature, oven cure dwell time, blade temperature and blade surfaces and edge conditions and blade finish.Type: ApplicationFiled: January 16, 2008Publication date: July 16, 2009Applicant: Nextec Applications, Inc.Inventors: Randy Meirowitz, Jamie Henderson, Michael Wang
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Publication number: 20080114434Abstract: The smart textile vascular graft is used with an electrical control unit. The vascular graft includes a tube structure formed of a textile material. At least one active fiber is incorporated in the textile material. The active fiber provides electrical coupling thereof to the electrical control unit to provide for transmission of a control signal between the active fiber and control unit. The active fiber has at least one physical characteristic which is variable and corresponds to the control signal to provide communication between the active fiber and electrical control unit relating to the physical characteristic.Type: ApplicationFiled: January 15, 2008Publication date: May 15, 2008Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventor: Jamie Henderson
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Publication number: 20080103587Abstract: Methods of making multi-furcated grafts and, more particularly, a bifurcated graft from at least one ePTFE member are provided. Also provided are grafts made according to such methods.Type: ApplicationFiled: November 1, 2006Publication date: May 1, 2008Inventors: Jamie Henderson, Krzysztof Sowinski, Ronald Rakos
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Patent number: 7318838Abstract: The smart textile vascular graft is used with an electrical control unit. The vascular graft includes a tube structure formed of a textile material. At least one active fiber is incorporated in the textile material. The active fiber provides electrical coupling thereof to the electrical control unit to provide for transmission of a control signal between the active fiber and control unit. The active fiber has at least one physical characteristic which is variable and corresponds to the control signal to provide communication between the active fiber and electrical control unit relating to the physical characteristic.Type: GrantFiled: December 31, 2004Date of Patent: January 15, 2008Assignee: Boston Scientific Scimed, Inc.Inventor: Jamie Henderson
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Publication number: 20070244539Abstract: An implantable microporous ePTFE tubular vascular graft exhibits long term patency, superior radial tensile strength and suture hole elongation resistance. The graft includes a first ePTFE tube and a second ePTFE tube circumferentially disposed over the first tube. The first ePTFE tube exhibits a porosity sufficient to promote cell endothelization, tissue ingrowth and healing. The second ePTFE tube exhibits enhanced radial strength in excess of the radial tensile strength of the first tube.Type: ApplicationFiled: June 7, 2007Publication date: October 18, 2007Inventors: David Lentz, Jamie Henderson, Edward Dormier, Richard Zdrahala, Gary Loomis, Ronald Rakos, Krzysztof Sowinski
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Patent number: 7244271Abstract: An implantable microporous ePTFE tubular vascular graft exhibits long term patency, superior radial tensile strength and suture hole elongation resistance. The graft includes a first ePTFE tube and a second ePTFE tube circumferentially disposed over the first tube. The first ePTFE tube exhibits a porosity sufficient to promote cell endothelization, tissue ingrowth and healing. The second ePTFE tube exhibits enhanced radial strength in excess of the radial tensile strength of the first tube.Type: GrantFiled: April 9, 2004Date of Patent: July 17, 2007Assignee: Boston Scientific Scimed, Inc.Inventors: David Lentz, Jamie Henderson, Edward Dormier, Richard Zdrahala, Gary Loomis, Ronald Rakos, Krzysztof Sowinski
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Publication number: 20070078512Abstract: The vascular graft includes a conduit structure having outer and inner wall surfaces. The conduit structure includes a longitudinal central portion having a flexibility. The conduit structure further includes a pair of longitudinal intermediate portions each of which are integral with the central portion and located longitudinally such that the central portion is between the intermediate portions. The intermediate portions each have a flexibility which is less than the flexibility of the central portion.Type: ApplicationFiled: October 5, 2005Publication date: April 5, 2007Inventors: Krzysztof Sowinski, Jamie Henderson
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Publication number: 20060282037Abstract: A graft, for example, an arterio-venous shunt graft, is provided, which in a first aspect of the subject invention, is formed with longitudinal ribs. With fibrotic tissue ingrowth between the ribs, a composite rib/tissue layer is formed about the graft. The ribs provide counteracting lateral force against the embedded tissue to seal punctures formed therethrough during hemodialysis procedures. To provide additional surface area for puncturing, the graft may be formed with a truncated cross-section. With a second aspect of the invention, the graft is mounted onto a strip to prevent kinking, twisting or bending during an implantation procedure.Type: ApplicationFiled: August 22, 2006Publication date: December 14, 2006Inventors: Jamie Henderson, Warren Joeckel, Ronald Rakos
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Publication number: 20060195174Abstract: A prosthesis, and method for forming same, are provided which includes expanded polytetrafluoroethylene (ePTFE) tubes having angularly offset node and fibril configurations. Also, the node and fibril configurations are angularly offset from the longitudinal axes of the respective tubes, providing resistance against failure in the longitudinal direction.Type: ApplicationFiled: April 24, 2006Publication date: August 31, 2006Inventor: Jamie Henderson
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Publication number: 20060155371Abstract: A differentially expanded vascular graft for implantation within a body includes a PTFE tube formed of a homogeneous material. The PTFE tube has a longitudinal first portion which has been longitudinally expanded, and a longitudinal second portion which has been longitudinally expanded. The first and second portions have respective microstructures which are different from one another. A method and apparatus for making the differentially expanded vascular graft of the present invention facilitates the formation of the various expanded portions of the PTFE tube.Type: ApplicationFiled: December 31, 2004Publication date: July 13, 2006Inventor: Jamie Henderson
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Publication number: 20060149366Abstract: The vascular graft is for implantation within a body and has a PTFE tube structure including a length and inner and outer wall surfaces. The tube structure has a non-expanded portion formed from sintering a PTFE green tube extrudate and an expanded portion formed subsequent to the sintering. The expanded and non-expanded portions are of the same extrudate. The expanded portion has a region which adjoins the non-expanded portion wherein a degree of expansion of the region is limited by the non-expanded portion. The limiting of the expansion by the non-expanded portion is attenuated at a location of the region which is remote from the non-expanded portion. A method for making the vascular graft facilitates the formation of the non-expanded and expanded portions of the PTFE tube structure.Type: ApplicationFiled: December 31, 2004Publication date: July 6, 2006Inventor: Jamie Henderson
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Publication number: 20060147487Abstract: The smart textile vascular graft is used with an electrical control unit. The vascular graft includes a tube structure formed of a textile material. At least one active fiber is incorporated in the textile material. The active fiber provides electrical coupling thereof to the electrical control unit to provide for transmission of a control signal between the active fiber and control unit. The active fiber has at least one physical characteristic which is variable and corresponds to the control signal to provide communication between the active fiber and electrical control unit relating to the physical characteristic.Type: ApplicationFiled: December 31, 2004Publication date: July 6, 2006Inventor: Jamie Henderson