Patents by Inventor Timothy R. Abraham
Timothy R. Abraham 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: 10556105Abstract: A shield located within an implantable medical lead may be terminated in various ways. The shield may be terminated by butt, scarf, lap, or other joints between insulation layers surrounding the lead and an insulation extension. For lap joints, a portion of an outer insulation layer may be removed and a replacement outer insulation layer is positioned in place of the removed outer insulation layer, where the replacement layer extends beyond an inner insulation layer and the shield. The replacement layer may also lap onto a portion of the insulation extension. Barbs may be located between the replacement layer and the inner insulation layer or the insulation extension. The shield wires have ends at the termination point that may be folded over individually or may be capped with a ring located within one of the insulation layers of the jacket.Type: GrantFiled: May 7, 2018Date of Patent: February 11, 2020Assignee: MEDTRONIC, INC.Inventors: Michael J. Kern, James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer Fodness-Bondhus, Mark J. Conroy, Timothy R. Abraham, Brian T. Stolz
-
Patent number: 10525263Abstract: Radiopaque markers represent that a lead is suitable for a particular medical procedure such as a magnetic resonance image scan and are added to the lead or related device. The markers may be added after implantation of the lead in various ways including suturing, gluing, crimping, or clamping a radiopaque tag to the lead or to the device. The markers may be added by placing a radiopaque coil about the lead, and the radiopaque coil may radially contract against the lead to obtain a fixed position. The markers may be added by placing a polymer structure onto the lead where the polymer structure includes a radiopaque marker within it. The polymer structure may include a cylindrical aperture that contracts against the lead to fix the position of the polymer structure. The polymer structure may form a lead anchor that includes suture wings that can be sutured to the lead.Type: GrantFiled: April 19, 2018Date of Patent: January 7, 2020Assignee: MEDTRONIC, INC.Inventors: James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer Fodness-Bondhus, Mark J. Conroy, Timothy R. Abraham, Bruce R. Mehdizadeh, Michael J. Kern, Jay K. Lahti
-
Publication number: 20190160280Abstract: A shield located within an implantable medical lead may be terminated in various ways at a metal connector. The shield may be terminated by various joints including butt, scarf, lap, or other joints between insulation layers surrounding the lead and an insulation extension. The shield may terminate with a physical and electrical connection to a single metal connector. The shield may terminate with a physical and electrical connection by passing between an overlapping pair of inner and outer metal connectors. The metal connectors may include features such as teeth or threads that penetrate the insulation layers of the lead. The shield may terminate with a physical and electrical connection by exiting a jacket of a lead adjacent to a metal connector and lapping onto the metal connector.Type: ApplicationFiled: January 31, 2019Publication date: May 30, 2019Inventors: Bruce R. Mehdizadeh, Brian T. Stolz, Michael Robert Klardie, James M. Olsen, Michael J. Kern, Richard T. Stone, Chad Q. Cai, Spencer Fodness-Bondhus, Mark J. Conroy, Timothy R. Abraham
-
Patent number: 10279186Abstract: A system may include a processor configured to automatically obtain magnetic resonance imaging compatibility information relating to compatibility of an active implantable medical device implantable in a patient with an MRI modality from at least two information sources. The processor may also be configured to automatically determine compatibility of the active implantable medical device with the magnetic resonance imaging modality based on the magnetic resonance imaging compatibility information.Type: GrantFiled: June 25, 2018Date of Patent: May 7, 2019Assignee: Medtronic, Inc.Inventors: Hrishikesh Gadagkar, James Zimmerman, James M. Olsen, Robyn L. Jagler, Timothy R. Abraham, Jeffrey R. Dixon
-
Patent number: 10220204Abstract: Leakage of signal between conduction paths of an implantable medical lead or lead and lead extension combination is detected. A stimulation signal is provided via one electrode. Two other electrodes sense the stimulation signal. A difference in amplitude of the two sensed signals is determined and based on this difference, leakage is detected. A sensing circuit may use differential amplification of the two signals and compare a resulting output signal to a leakage threshold. When the amplitude of the output signal exceeds the leakage threshold, then leakage is occurring between the conduction path providing the stimulation and one of the conduction paths used for sensing. Other techniques for determining leakage from the difference may also be used such as comparing the amplitudes of the two sensed signals and providing a value that is based on the comparison to indicate whether leakage is present.Type: GrantFiled: July 31, 2017Date of Patent: March 5, 2019Assignee: MEDTRONIC, INC.Inventors: Scott R. Stanslaski, Timothy R. Abraham, Timothy J. Denison, Vincent A. Roczniak, Wesley A. Santa, Steven J. Stroncek
-
Patent number: 10201700Abstract: A shield located within an implantable medical lead may be terminated in various ways at a metal connector. The shield may be terminated by various joints including butt, scarf, lap, or other joints between insulation layers surrounding the lead and an insulation extension. The shield may terminate with a physical and electrical connection to a single metal connector. The shield may terminate with a physical and electrical connection by passing between an overlapping pair of inner and outer metal connectors. The metal connectors may include features such as teeth or threads that penetrate the insulation layers of the lead. The shield may terminate with a physical and electrical connection by exiting a jacket of a lead adjacent to a metal connector and lapping onto the metal connector.Type: GrantFiled: August 31, 2016Date of Patent: February 12, 2019Assignee: MEDTRONIC, INC.Inventors: Bruce R. Mehdizadeh, Brian T. Stolz, Michael Robert Klardie, James M. Olsen, Michael J. Kern, Richard T. Stone, Chad Q. Cai, Spencer M. Bondhus, Mark J. Conroy, Timothy R. Abraham
-
Publication number: 20190030326Abstract: A shield located within an implantable medical lead may be terminated in various ways. The shield may be terminated by butt, scarf, lap, or other joints between insulation layers surrounding the lead and an insulation extension. For lap joints, a portion of an outer insulation layer may be removed and a replacement outer insulation layer is positioned in place of the removed outer insulation layer, where the replacement layer extends beyond an inner insulation layer and the shield. The replacement layer may also lap onto a portion of the insulation extension. The barbs may be located between the replacement layer and the inner insulation layer or the insulation extension. The shield wires have ends at the termination point that may be folded over individually or may be capped with a ring located within one of the insulation layers of the jacket.Type: ApplicationFiled: September 28, 2018Publication date: January 31, 2019Inventors: Michael J. Kern, James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer Fodness-Bondhus, Mark J. Conroy, Timothy R. Abraham, Brian T. Stolz
-
Publication number: 20190030325Abstract: Leakage of signal between conduction paths of an implantable medical lead or lead and lead extension combination is detected. A stimulation signal is provided via one electrode. Two other electrodes sense the stimulation signal. A difference in amplitude of the two sensed signals is determined and based on this difference, leakage is detected. A sensing circuit may use differential amplification of the two signals and compare a resulting output signal to a leakage threshold. When the amplitude of the output signal exceeds the leakage threshold, then leakage is occurring between the conduction path providing the stimulation and one of the conduction paths used for sensing. Other techniques for determining leakage from the difference may also be used such as comparing the amplitudes of the two sensed signals and providing a value that is based on the comparison to indicate whether leakage is present.Type: ApplicationFiled: July 31, 2017Publication date: January 31, 2019Inventors: Scott R. Stanslaski, Timothy R. Abraham, Timothy J. Denison, Vincent A. Roczniak, Wesley A. Santa, Steven J. Stroncek
-
Publication number: 20180339153Abstract: An implantable medical lead has a torsional stiffness and is rotationally coupled to a stylet. Applying rotation directly to the lead in turn causes rotation of the stylet. Where the stylet has a bent tip for purposes of steering the lead, the rotation applied to the lead rotates the bent tip so that the lead can be steered by rotating the lead rather than rotating a hub of the stylet. The rotational coupling may be achieved through one or more features provided for the lead and/or the stylet, such as a feature within a lumen of the lead that mates to a feature along the stylet or a feature of the stylet hub that engages the proximal end of the lead. The torsional stillness of the lead may be provided by adding a feature within the lead body, such as a braided metal wire or an overlapping foil.Type: ApplicationFiled: July 22, 2018Publication date: November 29, 2018Inventors: James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer Fodness-Bondhus, Mark J. Conroy, Timothy R. Abraham
-
Publication number: 20180304087Abstract: A system may include a processor configured to automatically obtain magnetic resonance imaging compatibility information relating to compatibility of an active implantable medical device implantable in a patient with an MRI modality from at least two information sources. The processor may also be configured to automatically determine compatibility of the active implantable medical device with the magnetic resonance imaging modality based on the magnetic resonance imaging compatibility information.Type: ApplicationFiled: June 25, 2018Publication date: October 25, 2018Inventors: Hrishikesh Gadagkar, James Zimmerman, James M. Olsen, Robyn L. Jagler, Timothy R. Abraham, Jeffrey R. Dixon
-
Patent number: 10086194Abstract: A shield located within an implantable medical lead may be terminated in various ways. The shield may be terminated by butt, scarf, lap, or other joints between insulation layers surrounding the lead and an insulation extension. For lap joints, a portion of an outer insulation layer may be removed and a replacement outer insulation layer is positioned in place of the removed outer insulation layer, where the replacement layer extends beyond an inner insulation layer and the shield. The replacement layer may also lap onto a portion of the insulation extension. Barbs may be located between the replacement layer and the inner insulation layer or the insulation extension. The shield wires have ends at the termination point that may be folded over individually or may be capped with a ring located within one of the insulation layers of the jacket.Type: GrantFiled: April 27, 2010Date of Patent: October 2, 2018Assignee: MEDTRONIC, INC.Inventors: Michael J. Kern, James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer M. Bondhus, Mark J. Conroy, Timothy R. Abraham, Brian T. Stolz
-
Publication number: 20180256893Abstract: A shield located within an implantable medical lead may be terminated in various ways. The shield may be terminated by butt, scarf, lap, or other joints between insulation layers surrounding the lead and an insulation extension. For lap joints, a portion of an outer insulation layer may be removed and a replacement outer insulation layer is positioned in place of the removed outer insulation layer, where the replacement layer extends beyond an inner insulation layer and the shield. The replacement layer may also lap onto a portion of the insulation extension. Barbs may be located between the replacement layer and the inner insulation layer or the insulation extension. The shield wires have ends at the termination point that may be folded over individually or may be capped with a ring located within one of the insulation layers of the jacket.Type: ApplicationFiled: May 7, 2018Publication date: September 13, 2018Inventors: Michael J. Kern, James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer M. Bondhus, Mark J. Conroy, Timothy R. Abraham, Brian T. Stolz
-
Publication number: 20180236223Abstract: Radiopaque markers represent that a lead is suitable for a particular medical procedure such as a magnetic resonance image scan and are added to the lead or related device. The markers may be added after implantation of the lead in various ways including suturing, gluing, crimping, or clamping a radiopaque tag to the lead or to the device. The markers may be added by placing a radiopaque coil about the lead, and the radiopaque coil may radially contract against the lead to obtain a fixed position. The markers may be added by placing a polymer structure onto the lead where the polymer structure includes a radiopaque marker within it. The polymer structure may include a cylindrical aperture that contracts against the lead to fix the position of the polymer structure. The polymer structure may form a lead anchor that includes suture wings that can be sutured to the lead.Type: ApplicationFiled: April 19, 2018Publication date: August 23, 2018Inventors: James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer M. Bondhus, Mark J. Conroy, Timothy R. Abraham, Bruce R. Mehdizadeh, Michael J. Kern, Jay K. Lahti
-
Patent number: 10035014Abstract: An implantable medical lead has a torsional stiffness and is rotationally coupled to a stylet. Applying rotation directly to the lead in turn causes rotation of the stylet. Where the stylet has a bent tip for purposes of steering the lead, the rotation applied to the lead rotates the bent tip so that the lead can be steered by rotating the lead rather than rotating a hub of the stylet. The rotational coupling may be achieved through one or more features provided for the lead and/or the stylet, such as a feature within a lumen of the lead that mates to a feature along the stylet or a feature of the stylet hub that engages the proximal end of the lead. The torsional stiffness of the lead may be provided by adding a feature within the lead body, such as a braided metal wire or an overlapping foil.Type: GrantFiled: April 27, 2010Date of Patent: July 31, 2018Assignee: MEDTRONIC, INC.Inventors: James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer M. Bondhus, Mark J. Conway, Timothy R. Abraham
-
Patent number: 10004910Abstract: A system may include a processor configured to automatically obtain magnetic resonance imaging compatibility information relating to compatibility of an active implantable medical device implantable in a patient with an MRI modality from at least two information sources. The processor may also be configured to automatically determine compatibility of the active implantable medical device with the magnetic resonance imaging modality based on the magnetic resonance imaging compatibility information.Type: GrantFiled: June 22, 2017Date of Patent: June 26, 2018Assignee: Medtronic, Inc.Inventors: Hrishikesh Gadagkar, James Zimmerman, James M. Olsen, Robyn L. Jagler, Timothy R. Abraham, Jeffrey R. Dixon
-
Patent number: 9956402Abstract: Radiopaque markers represent that a lead is suitable for a particular medical procedure such as a magnetic resonance image scan and are added to the lead or related device. The markers may be added after implantation of the lead in various ways including suturing, gluing, crimping, or clamping a radiopaque tag to the lead or to the device. The markers may be added by placing a radiopaque coil about the lead, and the radiopaque coil may radially contract against the lead to obtain a fixed position. The markers may be added by placing a polymer structure onto the lead where the polymer structure includes a radiopaque marker within it. The polymer structure may include a cylindrical aperture that contracts against the lead to fix the position of the structure. The polymer structure may form a lead anchor that includes suture wings that can be sutured to the lead.Type: GrantFiled: April 28, 2010Date of Patent: May 1, 2018Assignee: MEDTRONIC, INC.Inventors: James M. Olsen, Michael R. Klardie, Richard T. Stone, Chad Q. Cai, Spencer M. Bondhus, Mark J. Conroy, Timothy R. Abraham, Bruce R. Mehdizadeh, Michael J. Kern, Jay K. Lahti
-
Publication number: 20180085585Abstract: Techniques are disclosed for delivering electrical stimulation therapy to a patient. In one example, a medical system delivers electrical stimulation therapy to a tissue of the patient via electrodes. The medical system determines a first change of a first sensed signal of the patient to movement by the patient and a second change of a second sensed signal of the patient to the movement by the patient. Based on the first change and the second change, the medical system selects one of the first sensed signal and the second sensed signal of the patient for controlling the electrical stimulation therapy. The medical system adjusts a level of at least one parameter of the electrical stimulation therapy based on the selected one of the first sensed signal and the second sensed signal.Type: ApplicationFiled: September 25, 2017Publication date: March 29, 2018Inventors: Scott R. Stanslaski, Timothy R. Abraham, Thomas Adamski, Timothy J. Denison, Robert S. Raike
-
Publication number: 20180085586Abstract: Techniques are disclosed for delivering electrical stimulation therapy to a patient. In one example, a medical system delivers electrical stimulation therapy to a tissue of the patient via electrodes. The medical system determines a first response of a first sensed signal of the patient to the electrical stimulation therapy and a second response of a second sensed signal of the patient to the electrical stimulation therapy. Based on the first response and the second response for controlling the electrical stimulation therapy, the medical system selects one of the first sensed signal and the second sensed signal of the patient. The medical system adjusts a level of at least one parameter of the electrical stimulation therapy based on the selected one of the first sensed signal and the second sensed signal.Type: ApplicationFiled: September 25, 2017Publication date: March 29, 2018Inventors: Scott R. Stanslaski, Timothy R. Abraham, Thomas Adamski, Timothy J. Denison, Robert S. Raike, Christopher Pulliam
-
Publication number: 20170348537Abstract: A system may include a processor configured to automatically obtain magnetic resonance imaging compatibility information relating to compatibility of an active implantable medical device implantable in a patient with an MRI modality from at least two information sources. The processor may also be configured to automatically determine compatibility of the active implantable medical device with the magnetic resonance imaging modality based on the magnetic resonance imaging compatibility information.Type: ApplicationFiled: June 22, 2017Publication date: December 7, 2017Inventors: Hrishikesh Gadagkar, James Zimmerman, James M. Olsen, Robyn L. Jagler, Timothy R. Abraham, Jeffrey R. Dixon
-
Patent number: 9694188Abstract: A system may include a processor configured to automatically obtain magnetic resonance imaging compatibility information relating to compatibility of an active implantable medical device implantable in a patient with an MRI modality from at least two information sources. The processor may also be configured to automatically determine compatibility of the active implantable medical device with the magnetic resonance imaging modality based on the magnetic resonance imaging compatibility information.Type: GrantFiled: November 25, 2009Date of Patent: July 4, 2017Assignee: Medtronic, Inc.Inventors: Hrishikesh Gadagkar, James Zimmerman, James M. Olsen, Robyn L. Jagler, Timothy R. Abraham, Jeffrey R. Dixon