Patents by Inventor John L. Sommer

John L. Sommer 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).

  • Publication number: 20100292768
    Abstract: Electrical medical leads having active fixation electrodes, particularly helix electrodes intended to be screwed into body tissue, e.g., the heart, are disclosed having selectively applied insulation to optimize exposed electrode surface area and dispose the exposed electrode surface area toward tissue that is less traumatized by injury caused by screwing in the fixation helix. In a preferred fabrication method, an outer helical surface is masked by contact with a masking tube while a dielectric coating is applied to the inner helical surface of the coil turns of the helix, and the masking tube is removed when the dielectric coating has set. In one variation, at least one aperture is formed through the masking tube sidewall exposing an area of the outer helical surface thereby interrupting the uninsulated outer helical electrode.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 18, 2010
    Applicant: Medtronic, Inc.
    Inventors: John L. Sommer, Daniel C. Sigg, James A. Coles, JR.
  • Publication number: 20100256719
    Abstract: An improved medical lead assembly and method of use is provided. The lead assembly includes a lead body, and a spring member positioned adjacent to the lead body. The spring member may be deployed a selectable amount to maintain the lead body in a fixed location within a patient's body. The spring member may be an expandable coil, a mesh structure that is similar to a stent, or any other similar device that may be positioned in a low-profile state during a lead implant procedure. After the lead is positioned at a target destination, the spring member may be deployed an amount that is selected based on the characteristics of the surrounding tissue, including vessel size. According to one aspect of the invention, the lead assembly may provide means for facilitating chronic lead extraction.
    Type: Application
    Filed: June 15, 2010
    Publication date: October 7, 2010
    Applicant: Medtronic, Inc.
    Inventors: Vicki L. Bjorklund, John L. Sommer, Douglas S. Hine, Charles J. Love, Douglas N. Hess, Nicolaas M. Lokhoff
  • Patent number: 7783365
    Abstract: An elongate medical electrical lead conductor includes a layer of hydrolytically stable polyimide formed thereover.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: August 24, 2010
    Assignee: Medtronic, Inc.
    Inventors: Michael J. Ebert, John L. Sommer, Richard D. Ries, Jordan D. Honeck, Pedro A. Meregotte, Kenneth R. Brennen
  • Patent number: 7736198
    Abstract: An improved medical lead assembly and method of use is provided. The lead assembly includes a lead body, and a spring member positioned adjacent to the lead body. The spring member may be deployed a selectable amount to maintain the lead body in a fixed location within a patient's body. The spring member may be an expandable coil, a mesh structure that is similar to a stent, or any other similar device that may be positioned in a low-profile state during a lead implant procedure. After the lead is positioned at a target destination, the spring member may be deployed an amount that is selected based on the characteristics of the surrounding tissue, including vessel size. According to one aspect of the invention, the lead assembly may provide means for facilitating chronic lead extraction.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: June 15, 2010
    Assignee: Medtronic, Inc.
    Inventors: Vicki L. Bjorklund, John L. Sommer, Douglas S. Hine, Charles J. Love, Douglas N. Hess, Nicolaas M. Lokhoff
  • Patent number: 7720550
    Abstract: Electrical medical leads having active fixation electrodes, particularly helix electrodes intended to be screwed into body tissue, e.g., the heart, are disclosed having selectively applied insulation to optimize exposed electrode surface area and dispose the exposed electrode surface area toward tissue that is less traumatized by injury caused by screwing in the fixation helix. In a preferred fabrication method, an outer helical surface is masked by contact with a masking tube while a dielectric coating is applied to the inner helical surface of the coil turns of the helix, and the masking tube is removed when the dielectric coating has set. In one variation, at least one aperture is formed through the masking tube sidewall exposing an area of the outer helical surface thereby interrupting the uninsulated outer helical electrode.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: May 18, 2010
    Assignee: Medtronic, Inc.
    Inventors: John L Sommer, Daniel C Sigg, James A Coles, Jr.
  • Publication number: 20100114271
    Abstract: A lead for a medical device includes an elongate filar core member having an axis, which is operable for transmitting a lead signal. Furthermore, the lead includes an insulating layer disposed directly on the elongate filar core member and that extends along the axis. The lead also includes an electrically conductive layer disposed directly on the insulating layer and that extends along the axis.
    Type: Application
    Filed: October 31, 2008
    Publication date: May 6, 2010
    Applicant: Medtronic, Inc.
    Inventors: John L. Sommer, Scott Brabec
  • Publication number: 20100114282
    Abstract: An elongate medical electrical lead conductor includes a layer of hydrolytically stable polyimide formed thereover.
    Type: Application
    Filed: January 7, 2010
    Publication date: May 6, 2010
    Applicant: Medtronic, Inc.
    Inventors: Michael J. Ebert, John L. Sommer, Richard D. Ries, Jordan D. Honeck, Pedro A. Meregotte, Kenneth R. Brennen
  • Publication number: 20090306752
    Abstract: An implantable medical device that includes a lead body extending from a proximal end to a distal end, a plurality of conductors extending between the proximal end and the distal end of the lead body, and an insulative layer formed of a hydrolytically stable polyimide material surrounding the plurality of conductors. In one embodiment, the hydrolytically stable polyimide material is an Si polyimide material.
    Type: Application
    Filed: August 14, 2009
    Publication date: December 10, 2009
    Applicant: Medtronic, Inc.
    Inventors: Michael J. Ebert, John L. Sommer, Jordan D. Honeck, Richard D. Ries, Pedro A. Meregotte, Kenneth R. Brennen
  • Publication number: 20090276003
    Abstract: A lead coupling device adapted for coupling to a lead and methods for using the coupling devices are provided. The coupling device includes a housing assembly having a proximal opening and a distal opening. The coupling device also has a lead receiving channel that is disposed between the two openings to receive a lead therethrough. Various electronics components may also included in the coupling device that enable operations such as sensing, delivery of electrical energy and wireless communication between the coupling device and an external device.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Inventors: John L. Sommer, Michael D. Eggen, Joseph A. DuPay
  • Publication number: 20090276002
    Abstract: A lead coupling device adapted for coupling to a lead and methods for using the coupling devices are provided. The coupling device includes a housing assembly having a proximal opening and a distal opening. The coupling device also has a lead receiving channel that is disposed between the two openings to receive a lead therethrough. Various electronics components may also included in the coupling device that enable operations such as sensing, delivery of electrical energy and wireless communication between the coupling device and an external device.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Inventors: John L. Sommer, Michael D. Eggen, Joseph A. DuPay
  • Publication number: 20090276004
    Abstract: A lead implant system includes a lead coupling device, which is configured to couple a lead during an implant procedure, in communication with a medical device and an implantable medical device, which is contained within a package that includes an electrical interface for electrical coupling with an electrical contact of the implantable medical device. The electrical interface facilitates coupling of the packaged medical device to an electrical contact of another medical device, which is located outside the package. If the electrical contact of the packaged device is mounted within a bore of the device, then the connector structure allows for passage of a sterilizing gas into the connector bore, and past the connector contact, within the bore.
    Type: Application
    Filed: April 30, 2008
    Publication date: November 5, 2009
    Inventors: Christine G. Kronich, John L. Sommer, William K. Wenger, Michael D. Eggen, Gerald Jordan Montgomery, Joseph A. DuPay
  • Publication number: 20090192581
    Abstract: An implantable medical device that includes an elongated body having a proximal end and a distal end, a helical fixation member extending from the distal end of the elongated body, the helical fixation member including a distal tip for affixing the distal end of the elongated body at an implant site, and a tracking member extending from the distal end of the elongated body, through the helical fixation member and outward from the distal tip of the helical fixation member for tracking along an implant pathway during implantation of the implantable medical device.
    Type: Application
    Filed: April 8, 2009
    Publication date: July 30, 2009
    Applicant: Medtronic, Inc.
    Inventors: John L. Sommer, Douglas N. Hess
  • Patent number: 7532939
    Abstract: An implantable medical device that includes an elongated body having a proximal end and a distal end, a helical fixation member extending from the distal end of the elongated body, the helical fixation member including a distal tip for affixing the distal end of the elongated body at an implant site, and a tracking member extending from the distal end of the elongated body, through the helical fixation member and outward from the distal tip of the helical fixation member for tracking along an implant pathway during implantation of the implantable medical device.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: May 12, 2009
    Assignee: Medtronic, Inc.
    Inventors: John L. Sommer, Douglas S. Hess
  • Publication number: 20090054941
    Abstract: This disclosure describes techniques for controlling a depth of propagation of a stimulation field extending from an outer diameter of a lead body of an implantable stimulation lead. An implantable electrical stimulation lead may include a lead body, and at least one electrode arranged as a ring. An outer diameter of the ring may be different than an outer diameter of the lead body. A ring with a diameter smaller than the diameter of the lead body may be useful in limiting the depth of propagation of the stimulation field within patient tissue. A ring with a diameter greater than the diameter of the lead body may be useful in extending the depth of propagation of the stimulation field.
    Type: Application
    Filed: August 20, 2008
    Publication date: February 26, 2009
    Inventors: Michael D. Eggen, John L. Sommer, Michael Ebert, David Wayne Bourn, Gabriela C. Miyazawa
  • Publication number: 20090054936
    Abstract: This disclosure describes implantable medical leads that include a lead body and an electrode. A width of the electrode as measured along a longitudinal direction of the lead varies about the perimeter of the lead. The uneven width of the electrode may bias a stimulation field in a particular direction, e.g., a radial or transverse direction relative to the longitudinal axis of the lead. Electrodes with an uneven width may be useful for controlling the direction of propagation of the stimulation field in order to, for example, avoid phrenic nerve stimulation during LV pacing or neck muscle stimulation during vagal neurostimulation.
    Type: Application
    Filed: August 20, 2008
    Publication date: February 26, 2009
    Inventors: Michael D. Eggen, John L. Sommer, Michael Ebert, David Wayne Bourn, Gabriela C. Miyazawa
  • Publication number: 20090054946
    Abstract: A medical system comprises a plurality of electrodes; at least one sensor configured to output at least one signal based on at least one physiological parameter of a patient; and a processor. The processor is configured to control delivery of stimulation to the patient using a plurality of electrode configurations. Each of the electrode configurations comprises at least one of the plurality of electrodes. For each of the electrode configurations, the processor is configured to determine a first response of target tissue to the stimulation based on the signals, and a second response of non-target tissue to the stimulation based on the signals. The processor is also configured to select at least one of the electrode configurations for delivery of stimulation to the patient based on the first and second responses for the electrode configurations. As examples, the target tissue may be a left ventricle or vagus nerve.
    Type: Application
    Filed: August 20, 2008
    Publication date: February 26, 2009
    Applicant: Medtronic, Inc.
    Inventors: John L. Sommer, David Wayne Bourn, Mark T. Marshall, Michael D. Eggen, Gabriela C. Miyazawa
  • Publication number: 20090054947
    Abstract: A system includes an implantable electrical stimulation lead configured for intravenous introduction into a vessel proximate to a heart and an electrical stimulator. The lead comprises a lead body and at least three electrode segments. The electrical stimulator is coupled to the electrode segments and configures a first of the electrode segments as a first anode, a second of the electrode segments as a cathode, and a third of the electrode segments as a second anode, and delivers electrical stimulation to the heart via the cathode and first and second anodes. Additional techniques for delivering electrical stimulation include using multiple electrode segments as cathodes and electrically isolating other electrode segments. Other examples are directed to techniques for directing electrical therapy to a vagus nerve of a patient.
    Type: Application
    Filed: August 20, 2008
    Publication date: February 26, 2009
    Applicant: Medtronic, Inc.
    Inventors: David Wayne Bourn, John L. Sommer, Mark T. Marshall, Michael D. Eggen, Gabriela C. Miyazawa
  • Patent number: 7463933
    Abstract: An elongate body of a medical device includes at least one retaining segment extending along a length of the body, the retaining segment including a plurality of fish-like scales directed in a first common direction.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: December 9, 2008
    Assignee: Medtronic, Inc.
    Inventors: Dale A. Wahlstrom, Jay A. Erlebacher, John L. Sommer
  • Publication number: 20080300664
    Abstract: A medical electrical lead, which may be useful in coupling an implantable medical device, is comprised of a first and second lead. The first lead has a first electrode coupled adjacent a distal end portion thereof. The distal end portion of the first lead is anchorable in the coronary sinus of a patient. The second lead is coupled with and moveable along the first lead. The second lead has a second electrode located thereon wherein the position of the first and second electrodes may be varied relative to one another by movement of the second lead along the first lead. A rubber tip holds the relative position of each electrode.
    Type: Application
    Filed: May 6, 2008
    Publication date: December 4, 2008
    Inventors: DOUGLAS S. HINE, John L. Sommer, James H. Vaughan, Rick D. McVenes, Paulus C. Van Venrooij, Pierre-Andre Grandjean
  • Publication number: 20080243195
    Abstract: The medical lead delivery device more easily and quickly delivers a lead to or through the coronary vein of a patient's heart. The medical lead delivery device includes an elongated body, a controller, a first and second spring, and a sleeve. The elongated body includes a proximal end and a distal end. The controller is disposed at the proximal end and provides enhanced control of the distal tip of the elongated body.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 2, 2008
    Inventors: John L. Sommer, Patrick Senarith