Patents by Inventor Timothy G. J. Ehr
Timothy G. J. Ehr 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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Publication number: 20080167706Abstract: Improved stent configurations exhibiting limited recoil, resistance to compression and improved longitudinal flexibility.Type: ApplicationFiled: February 25, 2008Publication date: July 10, 2008Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Timothy J. Ley, Graig L. Kveen, Timothy G.J. Ehr, Brian J. Brown, David L. Friesen
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Publication number: 20080154354Abstract: A radially expandable stent comprising a plurality of spaced band-like elements and intersecting links is disclosed. The band-like elements have a generally serpentine configuration to provide continuous waves of generally sinusoidal character to each band-like element. The waves are characterized by a plurality of peaks and troughs taking a generally longitudinal direction along the cylinder such that the waves in the band-like elements open as the stent is expanded from a first diameter to a second diameter. The intersecting links are substantially U-shaped and terminate in first and second shanks. The first shank of a link emanates from a region between a peak and trough on a band-like element and the second shank of the link emanates from a region between a peak and trough on an adjacent band-like element.Type: ApplicationFiled: February 4, 2008Publication date: June 26, 2008Applicant: Boston Scientific Scimed, Inc.Inventors: Graig L. Kveen, Timothy G. J. Ehr, Brian J. Brown
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Patent number: 7335225Abstract: Improved stent configurations exhibiting limited recoil, resistance to compression and improved longitudinal flexibility.Type: GrantFiled: May 31, 2002Date of Patent: February 26, 2008Assignee: Boston Scientific Scimed, IncInventors: Timothy J. Ley, Graig L. Kveen, Timothy G. J. Ehr, Brian J. Brown, David L. Friesen
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Patent number: 7326245Abstract: This invention relates generally to a stent comprising a plurality of struts and a plurality of projecting elements integral with the struts. At least some of the struts and some of the projecting elements comprise a biologically active material. The struts are configured in a tubular shape or tubular sidewall having two ends. One end of at least one of the projecting elements defines an end of the stent when the stent is expanded. The invention is also directed to a method for delivering the biologically active material to body tissue of a patient by inserting such an expandable stent into body of the patient. The invention is further directed to a system comprising the expandable stent and a balloon catheter for expanding the stent.Type: GrantFiled: July 14, 2004Date of Patent: February 5, 2008Assignee: Boston Scientific Scimed, Inc.Inventors: Arthur L Rosenthal, Timothy G. J. Ehr, Matthew Miller
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Patent number: 7326243Abstract: A radially expandable stent comprising a plurality of spaced band-like elements and intersecting links is disclosed. The band-like elements have a generally serpentine configuration to provide continuous waves of generally sinusoidal character to each band-like element. The waves are characterized by a plurality of peaks and troughs taking a generally longitudinal direction along the cylinder such that the waves in the band-like elements open as the stent is expanded from a first diameter to a second diameter. The intersecting links are substantially U-shaped and terminate in first and second shanks. The first shank of a link emanates from a region between a peak and trough on a band-like element and the second shank of the link emanates from a region between a peak and trough on an adjacent band-like element.Type: GrantFiled: March 3, 2006Date of Patent: February 5, 2008Assignee: Boston Scientific Scimed, Inc.Inventors: Graig L. Kveen, Timothy G. J. Ehr, Brian J. Brown
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Patent number: 7022086Abstract: A guidewire having a marker member and method of manufacturing the same. In some embodiments, the invention includes a marker member disposed around the longitudinal axis of an elongate shaft and embedded within an outer sheath.Type: GrantFiled: May 21, 2002Date of Patent: April 4, 2006Assignee: Scimed Life Systems, Inc.Inventor: Timothy G. J. Ehr
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Patent number: 6945993Abstract: A radially expandable stent comprising a plurality of spaced band-like elements and intersecting links is disclosed. The band-like elements have a generally serpentine configuration to provide continuous waves of generally sinusoidal character to each band-like element. The waves are characterized by a plurality of peaks and troughs taking a generally longitudinal direction along the cylinder such that the waves in the band-like elements open as the stent is expanded from a first diameter to a second diameter. The intersecting links are substantially U-shaped and terminate in first and second shanks. The first shank of a link emanates from a region between a peak and trough on a band-like element and the second shank of the link emanates from a region between a peak and trough on an adjacent band-like element.Type: GrantFiled: November 4, 2002Date of Patent: September 20, 2005Assignee: Boston Scientific Scimed, Inc.Inventors: Craig L. Kveen, Timothy G. J. Ehr, Brian J. Brown
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Publication number: 20040249445Abstract: This invention relates generally to a stent comprising a plurality of struts and a plurality of projecting elements integral with the struts. At least some of the struts and some of the projecting elements comprise a biologically active material. The struts are configured in a tubular shape or tubular sidewall having two ends. One end of at least one of the projecting elements defines an end of the stent when the stent is expanded. The invention is also directed to a method for delivering the biologically active material to body tissue of a patient by inserting such an expandable stent into body of the patient. The invention is further directed to a system comprising the expandable stent and a balloon catheter for expanding the stent.Type: ApplicationFiled: July 14, 2004Publication date: December 9, 2004Inventors: Arthur L. Rosenthal, Timothy G.J. Ehr, Matthew Miller
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Publication number: 20040225231Abstract: A guidewire having a marker member and method of manufacturing the same. In some embodiments, the invention includes a marker member disposed around the longitudinal axis of an elongate shaft and embedded within an outer sheath.Type: ApplicationFiled: May 21, 2002Publication date: November 11, 2004Inventor: Timothy G.J. Ehr
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Publication number: 20040204752Abstract: The invention is directed to an expandable stent which is longitudinally flexible in both the unexpanded and expanded conditions. The stent includes spiral structures which at least partially unwind upon expansion of the stent to limit stent recoil. Regions of low strain in the stent during expansion are provided by the spiral structures.Type: ApplicationFiled: April 27, 2004Publication date: October 14, 2004Applicant: SCIMED LIFE SYSTEMS, INC.Inventors: Timothy G.J. Ehr, Graig L. Kveen
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Patent number: 6746479Abstract: The invention is directed to an expandable stent which is longitudinally flexible in both the unexpanded and expanded conditions. The stent includes spiral structures which at least partially unwind upon expansion of the stent to limit stent recoil. Regions of low strain in the stent during expansion are provided by the spiral structures.Type: GrantFiled: September 17, 2001Date of Patent: June 8, 2004Assignee: SciMed Life Systems, Inc.Inventors: Timothy G. J. Ehr, Graig L. Kveen
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Patent number: 6685653Abstract: An extension system for a pressure-sensing guidewire is disclosed. The guidewire includes an elongated tubular member having a proximal end, a distal end and a lumen extending between the proximal and distal ends. The guidewire also includes at least one opening disposed adjacent the distal end of the tubular member for providing fluid communication to the lumen. The system also includes an elongated extension member that is detachably connected to the proximal end of the tubular member. The system enables a catheter to be inserted over a pressure-sensing guidewire without removing the pressure-sensing guidewire from a patient.Type: GrantFiled: December 19, 2001Date of Patent: February 3, 2004Assignee: SciMed Life Systems, Inc.Inventors: Timothy G.J. Ehr, Bruce Howard Asmus, James E. Mayberry
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Patent number: 6676590Abstract: A radiation source for inhibiting restenosis including a radiation delivery tube having a radioactive distal region, the tube being adapted to slide over a guide wire within a radiation delivery catheter. One tube has radioactive material incorporated into the tube wall material. Another tube has radioactive material secured to the tube surface. One radiation delivery balloon catheter includes a common inflation and radiation delivery lumen, the lumen being sealed distally and having a radiation source guide wire within the lumen. The lumen is sealed from contact with bodily fluids and is filled with inflation fluid during use. In use, the catheter balloon is advanced to a site to be treated, the balloon inflated, and the radioactive tube advanced over the radiation source guide wire within the lumen.Type: GrantFiled: December 8, 1997Date of Patent: January 13, 2004Assignee: SciMed Life Systems, Inc.Inventors: Michael J. Urick, Timothy G. J. Ehr, Roger N. Hastings
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Patent number: 6652471Abstract: A pressure-sensing guidewire assembly with improved stiffness and torquability is disclosed. The guidewire assembly includes an elongated tubular member having a lumen extending therethrough. The lumen receives a torque enhancing mandrel that adds stiffness and torquability to the elongated tubular member. The torque enhancing member and elongated tubular member may have an atraumatic spring tip.Type: GrantFiled: November 28, 2001Date of Patent: November 25, 2003Assignee: SciMed Life Systems, Inc.Inventors: Timothy G. J. Ehr, Bruce Howard Asmus
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Publication number: 20030120175Abstract: A pressure sensing device is provided that can monitor and measure pressure at two points in a vessel or artery without moving the outer sheath or catheter of the device. The outer sheath or catheter includes two spaced apart openings that may be positioned in a vessel or artery on opposing sides of an occlusion. The device also includes an inner elongated tube with at least one opening. The inner elongated tube is slidable with respect to the outer sheath or catheter thereby permitting the opening of the elongated tube to be moved into selective registration with one of the openings of the outer sheath. A pressure measurement may be taken through one of the openings in the outer sheath by aligning the opening of the elongated tube with said opening and, then, a second pressure reading may be taken by sliding the elongated tube within the outer sheath so that the opening of the elongated tube is in registry with the other opening of the tubular sheath.Type: ApplicationFiled: December 20, 2001Publication date: June 26, 2003Inventors: Timothy G.J. Ehr, Bruce Howard Asmus
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Publication number: 20030120335Abstract: Improved stent configurations exhibiting limited recoil, resistance to compression and improved longitudinal flexibility are disclosed. The stent comprised of a plurality of annular elements aligned to form a cylindrical stent body. The annular elements are comprised of a plurality of open, generally boomerang-shaped segments interconnected top-to-bottom around each of the annular elements. Adjacent annular elements are interconnected by interconnecting element.Type: ApplicationFiled: December 17, 2002Publication date: June 26, 2003Applicant: SCIMED LIFE SYSTEMS, INC.Inventors: Timothy G.J. Ehr, Graig L. Kveen
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Publication number: 20030114775Abstract: An extension system for a pressure-sensing guidewire is disclosed. The guidewire includes an elongated tubular member having a proximal end, a distal end and a lumen extending between the proximal and distal ends. The guidewire also includes at least one opening disposed adjacent the distal end of the tubular member for providing fluid communication to the lumen. The system also includes an elongated extension member that is detachably connected to the proximal end of the tubular member. The system enables a catheter to be inserted over a pressure-sensing guidewire without removing the pressure-sensing guidewire from a patient.Type: ApplicationFiled: December 19, 2001Publication date: June 19, 2003Inventors: Timothy G. J. Ehr, Bruce Howard Asmus, James E. Mayberry
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Publication number: 20030100838Abstract: A pressure-sensing guidewire assembly with improved stiffness and torquability is disclosed. The guidewire assembly includes an elongated tubular member having a lumen extending therethrough. The lumen receives a torque enhancing mandrel that adds stiffness and torquability to the elongated tubular member. The torque enhancing member and elongated tubular member may have an atraumatic spring tip.Type: ApplicationFiled: November 28, 2001Publication date: May 29, 2003Inventors: Timothy G.J. Ehr, Bruce Howard Asmus
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Publication number: 20030055489Abstract: A radially expandable stent comprising a plurality of spaced band-like elements and intersecting links is disclosed. The band-like elements have a generally serpentine configuration to provide continuous waves of generally sinusoidal character to each band-like element. The waves are characterized by a plurality of peaks and troughs taking a generally longitudinal direction along the cylinder such that the waves in the band-like elements open as the stent is expanded from a first diameter to a second diameter. The intersecting links are substantially U-shaped and terminate in first and second shanks. The first shank of a link emanates from a region between a peak and trough on a band-like element and the second shank of the link emanates from a region between a peak and trough on an adjacent band-like element.Type: ApplicationFiled: November 4, 2002Publication date: March 20, 2003Applicant: SCIMED LIFE SYSTEMS, INC.Inventors: Graig L. Kveen, Timothy G. J. Ehr, Brian J. Brown
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Patent number: 6478816Abstract: A radially expandable stent comprising a plurality of spaced band-like elements and intersecting links is disclosed. The band-like elements have a generally serpentine configuration to provide continuous waves of generally sinusoidal character to each band-like element. The waves are characterized by a plurality of peaks and troughs taking a generally longitudinal direction along the cylinder such that the waves in the band-like elements open as the stent is expanded from a first diameter to a second diameter. The intersecting links are substantially U-shaped and terminate in first and second shanks. The first shank of a link emanates from a region between a peak and trough on a band-like element and the second shank of the link emanates from a region between a peak and trough on an adjacent band-like element.Type: GrantFiled: July 13, 2001Date of Patent: November 12, 2002Assignee: Scimed Life Systems, Inc.Inventors: Graig L. Kveen, Timothy G. J. Ehr, Brian J. Brown