Patents by Inventor Lawrence E. Brennan
Lawrence E. Brennan 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: 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: 20080146967Abstract: 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: ApplicationFiled: July 31, 2003Publication date: June 19, 2008Inventors: 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: 6673025Abstract: 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: November 16, 1999Date of Patent: January 6, 2004Assignee: 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: 6652472Abstract: A guidewire for intraluminal advancement of a medical device within a patient which has an elongate core member with a flexible body member disposed on a distal section thereof. In one embodiment, the distal section of the elongate core member has at least one flexible segment with at least one pair of opposed tapered or parallel faces. Preferably the flexible segment with the tapered or parallel faces is disposed at the distal end of the elongate core and forms a shapable segment.Type: GrantFiled: July 1, 2002Date of Patent: November 25, 2003Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Mo Jafari, Sepehr Fariabi, Lawrence E. Brennan, Wayne E. Cornish, Marc M. Jalisi, David M. Anderson
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Publication number: 20030013993Abstract: A guidewire for intraluminal advancement of a medical device within a patient which has an elongate core member with a flexible body member disposed on a distal section thereof. In one embodiment, the distal section of the elongate core member has at least one flexible segment with at least one pair of opposed tapered or parallel faces. Preferably the flexible segment with the tapered or parallel faces is disposed at the distal end of the elongate core and forms a shapable segment.Type: ApplicationFiled: July 1, 2002Publication date: January 16, 2003Inventors: Mo Jafari, Sepehr Fariabi, Lawrence E. Brennan, Wayne E. Cornish, Marc M. Jalisi, David M. Anderson
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Patent number: 6491648Abstract: A guidewire for guiding a medical device within a patient which has an elongate core member with a flexible body member disposed about and secured to a distal core section and a flexible core segment or flexible core segment which has a first pair of opposed faces which define a first transverse dimension that tapers from a first value to a second larger value and a second pair of opposed faces which define a second transverse dimension that tapers from a first value to a second smaller value.Type: GrantFiled: December 21, 2000Date of Patent: December 10, 2002Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Wayne E. Cornish, Mark T. Richardson, Lawrence E. Brennan, Marc M. Jalisi, David M. Anderson, Mo Jafari, Sepehr Fariabi
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Patent number: 6464650Abstract: A guidewire for intraluminal advancement of a medical device within a patient which has an elongate core member with a flexible body member disposed on a distal section thereof. In one embodiment, the distal section of the elongate core member has at least one flexible segment with at least one pair of opposed tapered or parallel faces. Preferably the flexible segment with the tapered or parallel faces is disposed at the distal end of the elongate core and forms a shapable segment.Type: GrantFiled: December 31, 1998Date of Patent: October 15, 2002Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Mo Jafari, Sepehr Fariabi, Lawrence E. Brennan, Wayne E. Cornish, Marc M. Jalisi, David M. Anderson
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Patent number: 6132389Abstract: The disclosure is directed to a guidewire having an elongate core member with at least one distally tapered portion at the distal section, with a flexible body member disposed around said distal section. The flexible body member is preferably comprised of a metallic helical coil that has proximally tapered portion at the proximal end, with a diameter similar to the outer diameter of the elongate core member at the point of attachment thereto. The distal end of the flexible body member is attached to the distal end of the elongate core member. The proximal taper of the flexible body member provides a smooth transition from the elongate core member to the flexible body member while minimizing the amount of bonding material needed and the resulting localized stiff portion at the point of connection between the proximal end of the flexible body member and the elongate body member.Type: GrantFiled: April 23, 1998Date of Patent: October 17, 2000Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Wayne E. Cornish, Lawrence E. Brennan, David M. Anderson, Marc M. Jalisi
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Patent number: 4146889Abstract: In a system for reducing sidelobes in adaptive receiving array antennas, an auxiliary signal is radiated through an omnidirectional antenna collocated with the phase center of an adaptive array antenna. The auxiliary signal is so transmited as to form a probe or pilot beam with a notch in the main-beam direction by transmitting through both the omnidirectional and the array antenna simultaneously. The relative phases of both antennas are controlled to obtain near-zero radiation in the main-beam direction. Adaptive control loops receive returns from the probe beam and adjust the weights of the receiving array antenna. The receiving array weights are used to form a low sidelobe antenna pattern for reception of the main radar signal, which is transmitted with a directional pattern. Either time or frequency separation may be used to distinguish the probe beam from the main beam.Type: GrantFiled: January 20, 1972Date of Patent: March 27, 1979Assignee: Technology Service CorporationInventors: Lawrence E. Brennan, Irving S. Reed, Peter Swerling