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).

  • Patent number: 8496658
    Abstract: 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: Grant
    Filed: September 11, 2012
    Date of Patent: July 30, 2013
    Assignee: 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
  • Patent number: 8430879
    Abstract: 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: Grant
    Filed: March 21, 2008
    Date of Patent: April 30, 2013
    Assignee: 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
  • Patent number: 8365721
    Abstract: 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: Grant
    Filed: August 27, 2010
    Date of Patent: February 5, 2013
    Assignee: 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
  • Publication number: 20130006245
    Abstract: 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: Application
    Filed: September 11, 2012
    Publication date: January 3, 2013
    Applicant: 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
  • Publication number: 20120330088
    Abstract: 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: Application
    Filed: September 5, 2012
    Publication date: December 27, 2012
    Inventors: Richard A. Hillstead, Charles E. Larsen, Roelaf Trip, Cory S. Anderson, John N. Hendrick, Benjamin W. Woodward
  • Patent number: 8292795
    Abstract: 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: Grant
    Filed: September 22, 2010
    Date of Patent: October 23, 2012
    Assignee: NeoVista, Inc.
    Inventors: Richard A Hillstead, Charles E. Larsen, Roelof Trip, Cory S. Anderson, Eberhard Fritz, Rainer Pintaske
  • Patent number: 8128627
    Abstract: 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: Grant
    Filed: December 29, 2008
    Date of Patent: March 6, 2012
    Assignee: 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
  • Patent number: 8012078
    Abstract: 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: Grant
    Filed: February 22, 2007
    Date of Patent: September 6, 2011
    Assignee: Best Vascular
    Inventors: Raoul Bonan, Charles E. Larsen, Roelof Trip, Douglas B. Schumer, Jack C. Griffis, III, Andrew L. Lerohl
  • Publication number: 20110196186
    Abstract: 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: Application
    Filed: April 20, 2011
    Publication date: August 11, 2011
    Inventors: RAOUL BONAN, Charles E. Larsen, Roelof Trip, Douglas B. Schumer, Jack C. Griffis, III, Andrew L. Lerohl
  • Patent number: 7951060
    Abstract: 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: Grant
    Filed: June 2, 2010
    Date of Patent: May 31, 2011
    Assignee: NeoVista, Inc.
    Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene de Juan, Mark Humayun, Eberhard Fritz, Rainer Pintaske
  • Publication number: 20110021906
    Abstract: 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: Application
    Filed: September 22, 2010
    Publication date: January 27, 2011
    Inventors: Richard A. Hillstead, Charles E. Larsen, Roelof Trip, Cory S. Anderson, Eberhard Fritz, Rainer Pintaske, John N. Hendrick, Benjamin W. Woodward
  • Publication number: 20110004045
    Abstract: 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: Application
    Filed: August 27, 2010
    Publication date: January 6, 2011
    Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene deJuan, Mark S. Humayun, Eberhard Fritz, Rainer Pintaske, Sabine Willenkamp, Gerd T. Phillipps
  • Publication number: 20100268013
    Abstract: 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: Application
    Filed: June 2, 2010
    Publication date: October 21, 2010
    Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene deJuan, Mark Humayun, Eberhard Fritz, Rainer Pintaske
  • Patent number: 7803103
    Abstract: 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: Grant
    Filed: November 15, 2006
    Date of Patent: September 28, 2010
    Assignee: NeoVista Inc.
    Inventors: Richard A Hillstead, Charles E. Larsen, Roelof Trip, Cory S. Anderson
  • Patent number: 7803102
    Abstract: 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: Grant
    Filed: November 7, 2006
    Date of Patent: September 28, 2010
    Assignee: 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
  • Patent number: 7744520
    Abstract: 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: Grant
    Filed: February 11, 2005
    Date of Patent: June 29, 2010
    Assignee: NeoVista, Inc.
    Inventors: Charles E. Larsen, Richard A. Hillstead, Roelof Trip, Eugene de Juan, Mark Humayun, Eberhard Fritz, Rainer Pintaske
  • Publication number: 20100087821
    Abstract: 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: Application
    Filed: March 21, 2008
    Publication date: April 8, 2010
    Applicant: 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
  • Publication number: 20090228008
    Abstract: 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: Application
    Filed: December 29, 2008
    Publication date: September 10, 2009
    Applicant: 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
  • Publication number: 20090228007
    Abstract: 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: Application
    Filed: December 29, 2008
    Publication date: September 10, 2009
    Applicant: OSTEOLIGN, INC.
    Inventors: Daniel F. Justin, James D. Stoneburner, Mojan Goshayesh, Mathew T. Harmon, Roelof Trip, Charles E. Larsen
  • Publication number: 20090216232
    Abstract: 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: Application
    Filed: December 29, 2008
    Publication date: August 27, 2009
    Applicant: 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