Patents by Inventor Mark T. Richardson
Mark T. Richardson 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: 9287870Abstract: Embodiments of a drain modulator that uses high power switch sensing to control active pulldown are generally described herein. In some embodiments, a logic and sense module is arranged to receive a control signal for controlling an on and an off state of an input of a switch to turn a high power voltage at an output of the switch on and off. A pullup module and a pulldown module are coupled to the input of the switch. An active pulldown module coupled to the output of the switch. The logic and sense module monitors the input to the switch and activates the active pulldown module to drain the output of the switch to a zero voltage when the input of the switch transitions to the off state.Type: GrantFiled: November 8, 2013Date of Patent: March 15, 2016Assignee: Raytheon CompanyInventors: Mark T. Richardson, Denpol Kultran, George W. Gerace, Richard D. Young, Mark E. Stading, Jeffrey H. Saunders
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Publication number: 20150130657Abstract: Embodiments of a drain modulator that uses high power switch sensing to control active pulldown are generally described herein. In some embodiments, a logic and sense module is arranged to receive a control signal for controlling an on and an off state of an input of a switch to turn a high power voltage at an output of the switch on and off. A pullup module and a pulldown module are coupled to the input of the switch. An active pulldown module coupled to the output of the switch. The logic and sense module monitors the input to the switch and activates the active pulldown module to drain the output of the switch to a zero voltage when the input of the switch transitions to the off state.Type: ApplicationFiled: November 8, 2013Publication date: May 14, 2015Applicant: Raytheon CompanyInventors: Mark T. Richardson, Denpol Kultran, George W. Gerace, Richard D. Young, Mark E. Stading, Jeffrey H. Saunders
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Patent number: 8708933Abstract: The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.Type: GrantFiled: November 12, 2012Date of Patent: April 29, 2014Assignee: Abbott Cardiovascular Systems Inc.Inventors: Wayne E. Cornish, John Schreiner, James M. Jacob, Marc M. Jalisi, Mark T. Richardson, Kent C. Stalker, Olin J. Palmer
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Patent number: 8613712Abstract: A guide wire for advancing a medical device such as a catheter through a patient's body lumen which has an elongated core with proximal and distal core section, a flexible tubular member such as a coil on the distal end. The wire core includes surface textures that are translated into the overlying coating. Alternatively, the coating has its own surface texture. The surface textures include randomly or non-randomly spaced bumps, divots, ridges, helical grooves, longitudinal grooves, undulations, etc.Type: GrantFiled: September 16, 2003Date of Patent: December 24, 2013Assignee: Abbott Cardiovascular Systems Inc.Inventors: David H. Burkett, Kevin Britton, Ryan Grandfield, Peter J. D'Aquanni, David Wrolstad, Edwin P. Mahieu, Wayne E. Cornish, Mark T. Richardson
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Patent number: 8308660Abstract: The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.Type: GrantFiled: June 1, 2011Date of Patent: November 13, 2012Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Wayne E. Cornish, John F. Schreiner, James M. Jacobs, Marc M. Jalisi, Mark T. Richardson, Kent C. B. Stalker, Olin J. Palmer
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Patent number: 8257278Abstract: A guide wire for guiding a medical device within a patient is disclosed. The guide wire has a solid inner core made of high modulus material such as Conichrome® or a rhenium alloy, and an outer shell made of a flexible, kink resistant material such as a nickel-titanium alloy. Preferably, the modulus of elasticity of the inner core material is at least about 20 percent greater than that of the outer shell material. The outer shell is mechanically joined to the inner core through a drawing or cladding process. In various embodiments, the distal end of the guide wire can be tapered by grinding away the outer shell to expose the inner core. Because of its stiffness, it can be manually shaped by the physician or cardiologist.Type: GrantFiled: May 14, 2002Date of Patent: September 4, 2012Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Jonathan M. Howland, Wayne E. Cornish, Mark T. Richardson
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Patent number: 8226577Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: GrantFiled: September 4, 2009Date of Patent: July 24, 2012Assignee: Abbott Cardiovascular Systems Inc.Inventors: Marc M. Jalisi, David M. Anderson, Wayne E. Cornish, Nancy A. Nicotra, Mark T. Richardson
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Patent number: 8123702Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: GrantFiled: March 11, 2008Date of Patent: February 28, 2012Assignee: Abbott Cardiovascular Systems Inc.Inventors: Ryan Grandfield, Mark T. Richardson, Peter D'Aquanni, Wayne E. Cornish, Jonathan M. Howland
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Patent number: 8057405Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: GrantFiled: March 12, 2008Date of Patent: November 15, 2011Assignee: Abbott Cardiovascular Systems Inc.Inventors: Marc Mehrzad Jalisi, David M. Anderson, Wayne E. Cornish, Nancy A. Nicotra, Mark T. Richardson
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Publication number: 20110230840Abstract: The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.Type: ApplicationFiled: June 1, 2011Publication date: September 22, 2011Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Wayne E. Cornish, John Schreiner, James Jacobs, Marc M. Jalisi, Mark T. Richardson, Kent C. Stalker, Olin J. Palmer
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Patent number: 7972283Abstract: The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.Type: GrantFiled: March 12, 2008Date of Patent: July 5, 2011Assignee: Abbott Cardiovascular Systems Inc.Inventors: Wayne E. Cornish, John F. Schreiner, James M. Jacobs, Marc M. Jalisi, Mark T. Richardson, Kent C. B. Stalker, Olin J. Palmer
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Patent number: 7878985Abstract: The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.Type: GrantFiled: September 11, 2003Date of Patent: February 1, 2011Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Wayne E. Cornish, John Schreiner, James Jacobs, Marc M. Jalisi, Mark T. Richardson, Kent C. Stalker, Olin J. Palmer
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Patent number: 7717864Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: GrantFiled: April 21, 2003Date of Patent: May 18, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Ryan Grandfield, Mark T. Richardson, Peter D'Aquanni, Wayne E. Cornish, Jonathan M. Howland
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Patent number: 7645242Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: GrantFiled: December 22, 1999Date of Patent: January 12, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Marc Mehrzad Jalisi, David M. Anderson, Wayne E. Cornish, Nancy A. Nicotra, Mark T. Richardson
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Publication number: 20100004562Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: ApplicationFiled: September 4, 2009Publication date: January 7, 2010Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: Marc M. Jalisi, David M. Anderson, Wayne E. Cornish, Nancy A. Nicotra, Mark T. Richardson
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Publication number: 20090131913Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: ApplicationFiled: March 11, 2008Publication date: May 21, 2009Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: Ryan Grandfield, Mark T. Richardson, Peter D'Aquanni, Wayne E. Cornish, Jonathan M. Howland
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Publication number: 20090062773Abstract: The invention is directed to a guidewire having a distal section with multiple distally tapered core segments with at least two contiguous distally tapering core segments in which the most distal tapered core segment preferably has a greater degree of taper than the proximally contiguous tapered core segment. The invention is also directed to an elongated intracorporeal device, preferably a guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal section of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that preferably is configured to produce a linear change in stiffness of the core over a longitudinal section of the device.Type: ApplicationFiled: March 12, 2008Publication date: March 5, 2009Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: Wayne E. Cornish, John Schreiner, James Jacobs, Marc M. Jalisi, Mark T. Richardson, Kent C. Stalker, Olin J. Palmer
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Patent number: 7494474Abstract: A guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal portion of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that is configured to produce a linear change in stiffness of the core over a longitudinal portion of the device. An embodiment has a plurality of radiopaque elements that may be intermittent, continuous or in the form of a helical ribbon for scaled measurement of intracorporeal structure under fluoroscopic imaging. Another embodiment has at least one layer of polymer over the distal end of the device.Type: GrantFiled: July 31, 2003Date of Patent: February 24, 2009Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Mark T. Richardson, David M. Anderson, Emmanuel C. Biagtan, Lawrence E. Brennan, David H. Burkett, Wayne E. Cornish, Robert C. Esselstein, James Jacobs, Marc M. Jalisi, Daryush P. Mirzaee, Olin J. Palmer, John Schreiner, Kent C. Stalker
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Patent number: 7455646Abstract: A guidewire or section thereof, that has a core member or the like with a plurality of contiguous tapered segments having taper angles that are configured to produce a linear change in stiffness over a longitudinal portion of the device. The device may also have a core section with a continuously changing taper angle to produce a curvilinear profile that is configured to produce a linear change in stiffness of the core over a longitudinal portion of the device. An embodiment has a plurality of radiopaque elements that may be intermittent, continuous or in the form of a helical ribbon for scaled measurement of intracorporeal structure under flouroscopic imaging. Another embodiment has at least one layer of polymer over the distal end of the device.Type: GrantFiled: June 26, 2007Date of Patent: November 25, 2008Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Mark T. Richardson, David M. Anderson, Emmanuel C. Biagtan, Lawrence E. Brennan, David H. Burkett, Wayne E. Cornish, Robert C. Esselstein, James Jacobs, Marc M. Jalisi, Daryush P. Mirzaee, Olin J. Palmer, John Schreiner, Kent C. Stalker
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Publication number: 20080200879Abstract: The present invention is directed to an intracorporeal device, preferably a guidewire, and method for making the device. The guidewire of the present invention is formed, at least in part, of a composite elongate core formed, at least in part, of precipitation hardened material. The elongate core members of the present invention will have an ultimate tensile strength and modulus of elasticity greater than the same for an identically dimensioned elongate member formed from superelastic NITINOL alone.Type: ApplicationFiled: March 12, 2008Publication date: August 21, 2008Applicant: Advanced Cardiovascular Systems, Inc.Inventors: Marc Mehrzad Jalisi, David M. Anderson, Wayne E. Cornish, Nancy A. Nicotra, Mark T. Richardson