Patents by Inventor Paul F. Turner

Paul F. Turner 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: 10737106
    Abstract: A radio frequency annular phased array hyperthermia system providing a heated focal zone with a diameter of 3 cm or less in a tissue mass includes a plurality of at least 42 radio frequency energy applicators in three rings adapted to surround the tissue mass. A bolus having a dielectric constant is positioned between the energy applicators and the tissue mass. The energy applicators operate at a frequency of at least about 900 MHz. to create the heated focal zone. The circumferential spacing between adjacent applicators in each ring is less than a critical distance and spacing between adjacent side by side rings is also less than a critical distance with such critical distances being interdependent on the frequency of the energy radiated, the dielectric constant of the bolus, the size of the bolus, and the size of the tissue mass.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: August 11, 2020
    Assignee: Pyrexar Medical Inc.
    Inventors: Paul F. Turner, Jason Ellsworth
  • Publication number: 20190117304
    Abstract: A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A fluid circulation system provides a plurality of fluid supply connectors and fluid return connectors which can be connected and used with any number of applicators between one and the number of the fluid supply connectors provided by the system. A portion of the applicator inserted into the tissue can stick to the tissue to stabilize the applicator during treatment. A warning marking on the applicator can be used during track ablation to prevent ablation of the patient skin tissue.
    Type: Application
    Filed: May 14, 2018
    Publication date: April 25, 2019
    Inventors: Paul F. Turner, Thomas L. Youd, Brianne Hamilton
  • Publication number: 20190030354
    Abstract: A radio frequency annular phased array hyperthermia system providing a heated focal zone with a diameter of 3 cm or less in a tissue mass includes a plurality of at least 42 radio frequency energy applicators in three rings adapted to surround the tissue mass. A bolus having a dielectric constant is positioned between the energy applicators and the tissue mass. The energy applicators operate at a frequency of at least about 900 MHz. to create the heated focal zone. The circumferential spacing between adjacent applicators in each ring is less than a critical distance and spacing between adjacent side by side rings is also less than a critical distance with such critical distances being interdependent on the frequency of the energy radiated, the dielectric constant of the bolus, the size of the bolus, and the size of the tissue mass.
    Type: Application
    Filed: May 7, 2018
    Publication date: January 31, 2019
    Inventors: Paul F. Turner, Jason Ellsworth
  • Patent number: 10039926
    Abstract: A radio frequency annular phased array hyperthermia system providing a relatively small heated focal zone in a relatively large tissue mass includes a plurality of radio frequency energy applicators in at least one ring adapted to surround the relatively large tissue mass. A bolus having a dielectric constant is positioned between the energy applicators and the tissue mass. The energy applicators operate at a frequency high enough to create the relatively small heated focal zone. The spacing between adjacent applicators in the at least one ring is less than a critical distance and spacing between adjacent rings when the at least one ring is a plurality of side by side rings is less than a critical distance with such critical distances being interdependent on the frequency of the energy radiated, the dielectric constant of the bolus, the size of the bolus, and the size of the relatively large tissue mass.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: August 7, 2018
    Assignee: Pyrexar Medical Inc.
    Inventors: Paul F. Turner, Mark Hagmann
  • Patent number: 9993294
    Abstract: A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed fluid space around the transmission line. A fluid circulation system circulates fluid in the fluid space. A portion of or all of the circulating fluid can be injected into tissue that surrounds the applicator body from approximately the proximal end of a desired heating zone produced by microwave energy radiated from the antenna along the applicator body toward the proximal end of the applicator to hydrate and wet the tissue outside the proximal end of the desired heating zone to reduce the drying of this tissue and limit extension of the heating and ablation zone proximally along the applicator body.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: June 12, 2018
    Assignee: PERSEON CORPORATION
    Inventors: Paul F. Turner, Thomas L. Youd
  • Patent number: 9968399
    Abstract: A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A fluid circulation system provides a plurality of fluid supply connectors and fluid return connectors which can be connected and used with any number of applicators between one and the number of the fluid supply connectors provided by the system. A portion of the applicator inserted into the tissue can stick to the tissue to stabilize the applicator during treatment. A warning marking on the applicator can be used during track ablation to prevent ablation of the patient skin tissue.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: May 15, 2018
    Assignee: PERSEON CORPORATION
    Inventors: Paul F Turner, Thomas L Youd, Brianne Hamilton
  • Publication number: 20170020605
    Abstract: EMR applicators of an EMR applicator array are provided in an openable applicator housing to allow easy patient entrance to and exit therefrom so that the portion of the patient's body that contains the tissue to be treated can be positioned directly into the applicator housing without the applicator housing having to be moved along the patient's body. This can eliminate or reduce the need for full body supporting structure as part of the applicator housing. The applicator housing provides support for the portion of the body positioned therein, and support pads or pillows, separate from the applicator housing, can replace the need for a full body support as part of the applicator housing. The housing can reduce the size and complication of prior art applicator housings, and can be placed along with the patient, on a patient support surface, such as in a standard MRI system.
    Type: Application
    Filed: June 22, 2016
    Publication date: January 26, 2017
    Inventors: Jason Ellsworth, Paul F. Turner
  • Patent number: 9415234
    Abstract: The accuracy of tissue heating in a body when using a phased array hyperthermia system can be improved by using, in conjunction with the hyperthermia system, a program for predicting heating patterns within the tissue based upon a selected E-field value at each of the antenna energy feedpoints. The hyperthermia system includes circuitry necessary to provide information for calculating the complete EM field at each of the antenna feedpoints during treatment, and such calculated actual feedpoint EM fields are feed to the program to be used in place of the otherwise program generated e-fields in predicting the heating pattern produced by the hyperthermia system during treatment. Further initial operating parameters of the hyperthermia system can be set to produce calculated actual EM fields at the antenna feedpoints which approximate the E-field values used by the program in pretreatment optimizing of the heating pattern.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: August 16, 2016
    Assignee: Pyrexar Medical Inc.
    Inventors: Paul F. Turner, Mark Hagmann
  • Patent number: 9387036
    Abstract: Heat treatment is applied to tissue in need of such treatment which is surrounded by tissue not in need of such treatment, by positioning a deposit within the surrounding tissue adjacent the tissue in need of treatment. The dielectric constant and/or the conductivity of the deposit is greater than that of the surrounding tissue. A radio frequency antenna or antenna array directs a radio frequency signal at a selected frequency into the deposit. The deposit has a diameter within a range of about 0.5 times to about 0.16 times the wavelength of the radio frequency signal within the surrounding tissue. The deposit is heated, at least partially through resonant heating, to a temperature greater than the surrounding tissue to apply heat treatment to the tissue in need of treatment. The deposit may take the form of a balloon of a Mammosite® type device to provide hyperthermia treatment in conjunction with radiation treatment of a breast after a lumpectomy.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: July 12, 2016
    Assignee: Pyrexar Medical Inc.
    Inventors: Paul F. Turner, Mark Hagmann
  • Publication number: 20160015993
    Abstract: A radio frequency annular phased array hyperthermia system providing a relatively small heated focal zone in a relatively large tissue mass includes a plurality of radio frequency energy applicators in at least one ring adapted to surround the relatively large tissue mass. A bolus having a dielectric constant is positioned between the energy applicators and the tissue mass. The energy applicators operate at a frequency high enough to create the relatively small heated focal zone. The spacing between adjacent applicators in the at least one ring is less than a critical distance and spacing between adjacent rings when the at least one ring is a plurality of side by side rings is less than a critical distance with such critical distances being interdependent on the frequency of the energy radiated, the dielectric constant of the bolus, the size of the bolus, and the size of the relatively large tissue mass.
    Type: Application
    Filed: May 7, 2015
    Publication date: January 21, 2016
    Inventors: Paul F. Turner, Mark Hagmann
  • Publication number: 20140039483
    Abstract: A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A fluid circulation system provides a plurality of fluid supply connectors and fluid return connectors which can be connected and used with any number of applicators between one and the number of the fluid supply connectors provided by the system. A portion of the applicator inserted into the tissue can stick to the tissue to stabilize the applicator during treatment. A warning marking on the applicator can be used during track ablation to prevent ablation of the patient skin tissue.
    Type: Application
    Filed: October 8, 2013
    Publication date: February 6, 2014
    Applicant: BSD Medical Corporation
    Inventors: Paul F Turner, Thomas L. Youd, Brianne Hamilton
  • Publication number: 20140012063
    Abstract: The accuracy of tissue heating in a body when using a phased array hyperthermia system can be improved by using, in conjunction with the hyperthermia system, a program for predicting heating patterns within the tissue based upon a selected E-field value at each of the antenna energy feedpoints. The hyperthermia system includes circuitry necessary to provide information for calculating the complete EM field at each of the antenna feedpoints during treatment, and such calculated actual feedpoint EM fields are feed to the program to be used in place of the otherwise program generated e-fields in predicting the heating pattern produced by the hyperthermia system during treatment. Further initial operating parameters of the hyperthermia system can be set to produce calculated actual EM fields at the antenna feedpoints which approximate the E-field values used by the program in pretreatment optimizing of the heating pattern.
    Type: Application
    Filed: July 6, 2012
    Publication date: January 9, 2014
    Inventors: Paul F. Turner, Mark Hagmann
  • Patent number: 8551083
    Abstract: A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A fluid circulation system provides a plurality of fluid supply connectors and fluid return connectors which can be connected and used with any number of applicators between one and the number of the fluid supply connectors provided by the system. A portion of the applicator inserted into the tissue can stick to the tissue to stabilize the applicator during treatment. A warning marking on the applicator can be used during track ablation to prevent ablation of the patient skin tissue.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: October 8, 2013
    Assignee: BSD Medical Corporation
    Inventors: Paul F. Turner, Thomas L. Youd, Brianne Hamilton
  • Patent number: 8423152
    Abstract: An apparatus and method for providing hyperthermia treatments to a protruding body portion having fatty tissue surrounding a deposit in the protruding body portion is disclosed. The apparatus includes a cavity for receiving the protruding body portion. A radio frequency antenna array is used to direct a radio frequency signal at a selected frequency into the protruding body portion such as a breast so that the radio frequency signal will have a selected wavelength in the breast to create a circularly polarized radio frequency electromagnetic field to selectively heat the deposit to a temperature greater than the surrounding fatty tissue through resonant heating within the deposit when a diameter of the deposit is within a range of about 0.5 times to 0.16 times the wavelength of the radio frequency signal within the fatty mammary tissue.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: April 16, 2013
    Assignee: BSD Medical Corporation
    Inventors: Paul F. Turner, Mark Hagmann
  • Patent number: 8414570
    Abstract: A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A temperature sensor senses the approximate temperature of cooling fluid to indicate cooling fluid is circulating. A multiplexing and power splitting circuit provides outputs tuned for one or for more than one applicator to be attached and detects the number of applicators and correct connection. A cadence sound generator can be used in conjunction with depth markings on the applicator to provide substantially constant withdrawal of the applicator from the treated tissue after treatment to provide track ablation.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: April 9, 2013
    Assignee: BSD Medical Corporation
    Inventors: Paul F. Turner, Thomas L. Youd
  • Patent number: 8306628
    Abstract: A hyperthermia treatment system for heating a selected region within a target body that includes a power source and a plurality of electromagnetic applicators that are in electrical communication with the power source and arranged in a surrounding array around a focal region to concentrate their combined radiation output onto the focal region. The treatment system also includes a support mechanism that is adapted to support a target body within the surrounding array of applicators, and a positioning mechanism adapted to move the support mechanism and align the selected region within the target body with the focal region. Furthermore, the positioning mechanism is adapted to compensate for movement of the focal region in response to an interaction between the combined radiation output and the target body.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: November 6, 2012
    Assignee: BDS Medical Corporation
    Inventors: Paul F. Turner, Mark Hagmann, Thomas L. Youd
  • Patent number: 8170643
    Abstract: A system and corresponding method for irradiating a target with electromagnetic radiation to produce a heated region. The system comprises a coupling device operable to couple electromagnetic radiation from a magnetic resonance imaging system. A plurality of energy radiator applicators are connected to the coupling device to receive electromagnetic radiation energy from the coupling device. Each of the radiator applicators is operable to emit a radio frequency heating signal using the electromagnetic radiation energy from the coupling device. A bolus filled with a dielectric fluid is positioned within the inner area of the MRI system. The bolus is operable to receive the radio frequency heating signals from the plurality of energy radiator applicators and direct the radio frequency heating signals into a section of the body to produce a heated region within the body.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: May 1, 2012
    Assignee: BSD Medical Corporation
    Inventors: Paul F. Turner, Mark Hagmann
  • Publication number: 20110245900
    Abstract: A hyperthermia treatment system for heating a selected region within a target body that includes a power source and a plurality of electromagnetic applicators that are in electrical communication with the power source and arranged in a surrounding array around a focal region to concentrate their combined radiation output onto the focal region. The treatment system also includes a support mechanism that is adapted to support a target body within the surrounding array of applicators, and a positioning mechanism adapted to move the support mechanism and align the selected region within the target body with the focal region. Furthermore, the positioning mechanism is adapted to compensate for movement of the focal region in response to an interaction between the combined radiation output and the target body.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 6, 2011
    Inventors: Paul F. Turner, Mark Hagmann, Thomas L. Youd
  • Publication number: 20110125148
    Abstract: An electromagnetic energy supply system for supplying electromagnetic energy signals to an applicator for applying the electromagnetic energy signals to tissue for heating such tissue can supply electromagnetic energy signals of at least one selected frequency of a plurality of frequencies available for selection. The system includes a plurality of individual electromagnetic signal generators each adapted to generate signals of a particular frequency, such as two microwave energy signal generators with one operating at 915 MHz and one operating at 1450 MHz. A system controller coordinates operation of the generators. Each generator is connected to connectors for connecting an applicator or array of applicators for applying the selected frequency electromagnetic energy signals to the tissue to be heated. A power splitting circuit can provide multiple connectors tuned for one or for more than one applicator to be connected.
    Type: Application
    Filed: February 3, 2011
    Publication date: May 26, 2011
    Inventors: Paul F. Turner, Mark Hagmann
  • Publication number: 20110118720
    Abstract: A microwave applicator for insertion into living body tissue for use in microwave coagulation and ablation treatments includes a microwave transmission line extending between an attachment end of the applicator and an antenna toward an insertion end of the applicator with an outer conductive sleeve forming an enclosed cooling fluid space around the transmission line. Circulation of cooling fluid is guided in the cooling fluid space by a guide sleeve. A temperature sensor senses the approximate temperature of cooling fluid to indicate cooling fluid is circulating. A multiplexing and power splitting circuit provides outputs tuned for one or for more than one applicator to be attached and detects the number of applicators and correct connection. A cadence sound generator can be used in conjunction with depth markings on the applicator to provide substantially constant withdrawal of the applicator from the treated tissue after treatment to provide track ablation.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 19, 2011
    Applicant: BSD Medical Corporation
    Inventors: Paul F. Turner, Thomas L. Youd