Patents by Inventor Charles E. Larsen
Charles E. Larsen 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: 8496658Abstract: An implantable intramedullary fixation structure adapted to be received in the intramedullary canal of a long bone is disclosed comprising a plurality of elongated segments. Each segment has a first end and a complementarily-shaped second end such that the first end of a segment cooperatively engages the second end of an adjacent segment. The segments define a guide aperture so as to be receivable over a guide for positioning in the intramedullary canal.Type: GrantFiled: September 11, 2012Date of Patent: July 30, 2013Assignee: Sonoma Orthopedic Products, Inc.Inventors: James D. Stoneburner, Matthew T. Harmon, Roelof Trip, Charles E. Larsen, Daniel F. Justin, Karen E. Mohr, Carlyle J. Creger, Mojan Goshayesh
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Patent number: 8430879Abstract: An implantable intramedullary fixation structure adapted to be received in the intramedullary canal of a long bone is disclosed comprising a plurality of elongated segments. Each segment has a first end and a complementarily-shaped second end such that the first end of a segment cooperatively engages the second end of an adjacent segment. The segments define a guide aperture so as to be receivable over a guide for positioning in the intramedullary canal.Type: GrantFiled: March 21, 2008Date of Patent: April 30, 2013Assignee: Sonoma Orthopedic Products, Inc.Inventors: James D. Stoneburner, Matthew T. Harmon, Roelof Trip, Charles E. Larsen, Daniel F. Justin, Karen E. Mohr, Carlyle J. Creger, Mojan Goshayesh
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Patent number: 8365721Abstract: A method for performing intraocular brachytherapy and an apparatus for performing the same is disclosed. The apparatus preferably comprises a hand-held delivery device that advances a radiation source into an associated cannula or probe that is positioned adjacent the target tissue. The handpiece provides for shielded storage of the radiation source when retracted from the cannula and includes a slider mechanism for advancing and retracting the radiation source. The radiation source is mounted to a wire that has a flexible distal end and a relatively stiffer proximal end. A positioning system for the cannula is also disclosed.Type: GrantFiled: August 27, 2010Date of Patent: February 5, 2013Assignee: NeoVista Inc.Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene deJuan, Mark S. Humayun, Eberhard Fritz, Rainer Pintaske, Sabine Willenkamp, Gerd T. Phillipps
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Publication number: 20130006245Abstract: An implantable intramedullary fixation structure adapted to be received in the intramedullary canal of a long bone is disclosed comprising a plurality of elongated segments. Each segment has a first end and a complementarily-shaped second end such that the first end of a segment cooperatively engages the second end of an adjacent segment. The segments define a guide aperture so as to be receivable over a guide for positioning in the intramedullary canal.Type: ApplicationFiled: September 11, 2012Publication date: January 3, 2013Applicant: SONOMA ORTHOPEDIC PRODUCTS, INC.Inventors: James D. Stoneburner, Matthew T. Harmon, Roelof Trip, Charles E. Larsen, Daniel F. Justin, Karen E. Mohr, Carlyle J. Creger, Mojan Goshayesh
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Publication number: 20120330088Abstract: Methods and apparatus for intraocular brachytherapy are disclosed in which a cannula is introduced into the eye for delivery of radiation to a target tissue. Techniques for properly locating the cannula with respect to the target tissue, for protecting non-target tissue, for regulating heat generated by x-ray emitters, and for combining therapies are disclosed.Type: ApplicationFiled: September 5, 2012Publication date: December 27, 2012Inventors: Richard A. Hillstead, Charles E. Larsen, Roelaf Trip, Cory S. Anderson, John N. Hendrick, Benjamin W. Woodward
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Patent number: 8292795Abstract: Methods and apparatus for intraocular brachytherapy are disclosed in which a cannula is introduced into the eye for delivery of radiation to a target tissue. Techniques for properly locating the cannula with respect to the target tissue, for protecting non-target tissue, for regulating heat generated by x-ray emitters, and for combining therapies are disclosed.Type: GrantFiled: September 22, 2010Date of Patent: October 23, 2012Assignee: NeoVista, Inc.Inventors: Richard A Hillstead, Charles E. Larsen, Roelof Trip, Cory S. Anderson, Eberhard Fritz, Rainer Pintaske
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Patent number: 8128627Abstract: An implantable segmented intramedullary structure adapted to be received in the intramedullary canal of a bone configurable between a relatively flexible, bent configuration for implantation or extraction and a relatively rigid, straightened configuration for bone treatment. The segmented intramedullary structure comprises a plurality of interconnected segments with a first interface and a complementarily-shaped second interface such that the first interface of a segment cooperatively engages the second interface of an adjacent segment. The segments define a channel for a tensioning member to lock the structure in a compressed configuration.Type: GrantFiled: December 29, 2008Date of Patent: March 6, 2012Assignee: Sonoma Orthopedic Products, Inc.Inventors: Daniel F. Justin, Karen E. Mohr, Carlyle J. Creger, Jeremy D. Borchert, James D. Stoneburner, Mojan Goshayesh, Matthew T. Harmon, Roelof Trip, Charles E. Larsen
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Patent number: 8012078Abstract: Method and apparatus are disclosed employing ionizing radiation for forming lines of ablation or lesions in cardiac tissue to treat atrial fibrillation or other electrophysiological problems with the heart. The apparatus may include a catheter in which the radiation source is advanced hydraulically after the catheter is in place within the heart. Various fixation devices are also disclosed for fixing the location of the catheter within the heart.Type: GrantFiled: February 22, 2007Date of Patent: September 6, 2011Assignee: Best VascularInventors: Raoul Bonan, Charles E. Larsen, Roelof Trip, Douglas B. Schumer, Jack C. Griffis, III, Andrew L. Lerohl
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Publication number: 20110196186Abstract: Method and apparatus are disclosed employing ionizing radiation. for forming lines of ablation or lesions in cardiac tissue to treat atrial fibrillation or other electrophysiological problems with the heart. The apparatus may include a catheter in which the radiation source is advanced hydraulically after the catheter is in place within the heart. Various fixation devices are also disclosed for fixing the location of the catheter within the heart.Type: ApplicationFiled: April 20, 2011Publication date: August 11, 2011Inventors: RAOUL BONAN, Charles E. Larsen, Roelof Trip, Douglas B. Schumer, Jack C. Griffis, III, Andrew L. Lerohl
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Patent number: 7951060Abstract: A method for performing intraocular brachytherapy and an apparatus for performing the same is disclosed. The apparatus preferably comprises a hand-held delivery device that advances a radiation source into an associated cannula or probe that is positioned adjacent the target tissue. The handpiece provides for shielded storage of the radiation source when retracted from the cannula and includes a slider mechanism for advancing and retracting the radiation source. The radiation source is mounted to a wire that has a flexible distal end and a relatively stiffer proximal end. A positioning system for the cannula is also disclosed.Type: GrantFiled: June 2, 2010Date of Patent: May 31, 2011Assignee: NeoVista, Inc.Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene de Juan, Mark Humayun, Eberhard Fritz, Rainer Pintaske
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Publication number: 20110021906Abstract: Methods and apparatus for intraocular brachytherapy are disclosed in which a cannula is introduced into the eye for delivery of radiation to a target tissue. Techniques for properly locating the cannula with respect to the target tissue, for protecting non-target tissue, for regulating heat generated by x-ray emitters, and for combining therapies are disclosed.Type: ApplicationFiled: September 22, 2010Publication date: January 27, 2011Inventors: Richard A. Hillstead, Charles E. Larsen, Roelof Trip, Cory S. Anderson, Eberhard Fritz, Rainer Pintaske, John N. Hendrick, Benjamin W. Woodward
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Publication number: 20110004045Abstract: A method for performing intraocular brachytherapy and an apparatus for performing the same is disclosed. The apparatus preferably comprises a hand-held delivery device that advances a radiation source into an associated cannula or probe that is positioned adjacent the target tissue. The handpiece provides for shielded storage of the radiation source when retracted from the cannula and includes a slider mechanism for advancing and retracting the radiation source. The radiation source is mounted to a wire that has a flexible distal end and a relatively stiffer proximal end. A positioning system for the cannula is also disclosed.Type: ApplicationFiled: August 27, 2010Publication date: January 6, 2011Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene deJuan, Mark S. Humayun, Eberhard Fritz, Rainer Pintaske, Sabine Willenkamp, Gerd T. Phillipps
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Publication number: 20100268013Abstract: A method for performing intraocular brachytherapy and an apparatus for performing the same is disclosed. The apparatus preferably comprises a hand-held delivery device that advances a radiation source into an associated cannula or probe that is positioned adjacent the target tissue. The handpiece provides for shielded storage of the radiation source when retracted from the cannula and includes a slider mechanism for advancing and retracting the radiation source. The radiation source is mounted to a wire that has a flexible distal end and a relatively stiffer proximal end. A positioning system for the cannula is also disclosed.Type: ApplicationFiled: June 2, 2010Publication date: October 21, 2010Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene deJuan, Mark Humayun, Eberhard Fritz, Rainer Pintaske
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Patent number: 7803103Abstract: Methods and apparatus for intraocular brachytherapy are disclosed in which a cannula is introduced into the eye for delivery of radiation to a target tissue. Techniques for properly locating the cannula with respect to the target tissue, for protecting non-target tissue, for regulating heat generated by x-ray emitters, and for combining therapies are disclosed.Type: GrantFiled: November 15, 2006Date of Patent: September 28, 2010Assignee: NeoVista Inc.Inventors: Richard A Hillstead, Charles E. Larsen, Roelof Trip, Cory S. Anderson
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Patent number: 7803102Abstract: A method for performing intraocular brachytherapy and an apparatus for performing the same is disclosed. The apparatus preferably comprises a hand-held delivery device that advances a radiation source into an associated cannula or probe that is positioned adjacent the target tissue. The handpiece provides for shielded storage of the radiation source when retracted from the cannula and includes a slider mechanism for advancing and retracting the radiation source. The radiation source is mounted to a wire that has a flexible distal end and a relatively stiffer proximal end. A positioning system for the cannula is also disclosed.Type: GrantFiled: November 7, 2006Date of Patent: September 28, 2010Assignee: NeoVista, Inc.Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene deJuan, Mark S. Humayun, Eberhard Fritz, Rainer Pintaske, Sabine Willenkamp, Gerd T. Phillipps
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Patent number: 7744520Abstract: A method for performing intraocular brachytherapy and an apparatus for performing the same is disclosed. The apparatus preferably comprises a hand-held delivery device that advances a radiation source into an associated cannula or probe that is positioned adjacent the target tissue. The handpiece provides for shielded storage of the radiation source when retracted from the cannula and includes a slider mechanism for advancing and retracting the radiation source. The radiation source is mounted to a wire that has a flexible distal end and a relatively stiffer proximal end. A positioning system for the cannula is also disclosed.Type: GrantFiled: February 11, 2005Date of Patent: June 29, 2010Assignee: NeoVista, Inc.Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene de Juan, Mark Humayun, Eberhard Fritz, Rainer Pintaske
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Publication number: 20100087821Abstract: Fracture fixation devices for placement within the intramedullary canal of a bone are disclosed. The devices disclosed include a tubular support including a liquid impermeable portion and a plurality of elongated members. The devices are typically used with a hardenable cement. Apparatus and methods for removing such devices are also disclosed.Type: ApplicationFiled: March 21, 2008Publication date: April 8, 2010Applicant: NOVALIGN ORTHOPAEDICS, INC.Inventors: Roelof Trip, James D. Stoneburner, Matthew T. Harmon, Charles E. Larsen, Mojan Goshayesh, Richard A. Hillstead, Steven B. Waite, Erik H. McDonald
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Publication number: 20090228008Abstract: An implantable segmented intramedullary structure adapted to be received in the intramedullary canal of a bone configurable between a relatively flexible, bent configuration for implantation or extraction and a relatively rigid, straightened configuration for bone treatment. The segmented intramedullary structure comprises a plurality of interconnected segments with a first interface and a complementarily-shaped second interface such that the first interface of a segment cooperatively engages the second interface of an adjacent segment. The segments define a channel for a tensioning member to lock the structure in a compressed configuration.Type: ApplicationFiled: December 29, 2008Publication date: September 10, 2009Applicant: OSTEOLIGN, INC.Inventors: Daniel F. Justin, Karen E. Mohr, Carlyle J. Creger, Jeremy D. Borchert, James D. Stoneburner, Mojan Goshayesh, Matthew T. Harmon, Roelof Trip, Charles E. Larsen
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Publication number: 20090228007Abstract: Methods of manufacturing, assembling, or treating a patient with an implantable segmented intramedullary structure adapted to be received in the intramedullary canal of a bone configurable between a relatively flexible, bent configuration for implantation or extraction and a relatively rigid, straightened configuration for bone treatment. The segmented intramedullary structure comprises a plurality of interconnected segments with a first interface and a complementarily-shaped second interface such that the first interface of a segment cooperatively engages the second interface of an adjacent segment. The segments define a channel for a tensioning member to lock the structure in a compressed configuration.Type: ApplicationFiled: December 29, 2008Publication date: September 10, 2009Applicant: OSTEOLIGN, INC.Inventors: Daniel F. Justin, James D. Stoneburner, Mojan Goshayesh, Mathew T. Harmon, Roelof Trip, Charles E. Larsen
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Publication number: 20090216232Abstract: A modular implantable segmented intramedullary structure adapted to be received in the intramedullary canal of a bone configurable between a relatively flexible, bent configuration for implantation or extraction and a relatively rigid, straightened configuration for bone treatment. The segmented intramedullary structure comprises a plurality of interconnected segments with a first interface and a complementarily-shaped second interface such that the first interface of a segment cooperatively engages the second interface of an adjacent segment. The segments define a channel for a tensioning member to lock the structure in a compressed configuration.Type: ApplicationFiled: December 29, 2008Publication date: August 27, 2009Applicant: OSTEOLIGN, INC.Inventors: Thomas B. Buford, III, Daniel F. Justin, Karen E. Mohr, Carlyle J. Creger, Jeremy D. Borchert, James D. Stoneburner, Mojan Goshayesh, Matthew T. Harmon, Roelof Trip, Charles E. Larsen