Patents by Inventor William Bradfield Handler
William Bradfield Handler 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: 11821970Abstract: A coil apparatus and methods for magnetic resonance imaging involving a wire winding, the wire winding having at least one of: a hollow cross-section wire and a solid cross-section wire, the solid cross-section wire having at least one of: a solid small cross-section wire and a solid large cross-section wire, the solid large cross-section wire having a thickness greater than that of the solid small cross-section wire, and the solid small cross-section wire disposed in one of adjacent and proximate at least one of the hollow cross-section wire and the solid large cross-section wire, whereby at least one of current density, winding density, and heat extraction are increasable.Type: GrantFiled: December 20, 2021Date of Patent: November 21, 2023Inventors: Geron André Bindseil, Ian Robert Oliphant Connell, William Bradfield Handler, Chad Tyler Harris
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Patent number: 11802923Abstract: Systems and methods for imaging a subject with a magnetic resonance imaging system using magnetic field gradients generated by one or more gradient coils operating with gradient coil settings, such as gradient amplitudes and gradient slew rates, above a threshold at which peripheral nerve stimulation is likely to be induced in the subject. A dielectric assembly is positioned adjacent a skin surface of the subject such that the dielectric assembly attenuates the local electric fields induced by the magnetic field gradients, which would be likely to induce PNS when the dielectric assembly is not arranged adjacent the skin surface of the subject. As a result of the dielectric assembly placed adjacent the skin surface of the subject, the gradient coil settings can be increased above the threshold without inducing PNS in the subject.Type: GrantFiled: August 15, 2022Date of Patent: October 31, 2023Inventors: Chad Tyler Harris, Geron André Bindseil, William Bradfield Handler
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Patent number: 11585880Abstract: Magnetic resonance imaging (MRI) systems and methods, involving: a main magnet configured to generate a magnet field for MRI; a transmit radio frequency (RF) coil assembly configured to transmit an RF pulse into a portion of a subject; an RF coil assembly configured to, in response to the an RF pulse, receive MR signals emitted from the portion of the subject; and a gradient coil assembly having coil windings arranged in a radial layer and a first set of electrical connectors embedded in the radial layer to reduce a radial extent occupied by the gradient coil assembly, an electrical connector in the first set of electrical connectors configured to cross over a portion of the coil windings in the radial layer, the first set of electrical connectors configured to drive the coil windings with a current sufficient to generate a perturbation in the magnet field such that the MR signals encode an MR image based on the perturbation, and the radial layer having a depressed area configured to radially constrain the elType: GrantFiled: February 2, 2022Date of Patent: February 21, 2023Inventors: Geron André Bindseil, William Bradfield Handler
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Publication number: 20220390535Abstract: Systems and methods for imaging a subject with a magnetic resonance imaging system using magnetic field gradients generated by one or more gradient coils operating with gradient coil settings, such as gradient amplitudes and gradient slew rates, above a threshold at which peripheral nerve stimulation is likely to be induced in the subject. A dielectric assembly is positioned adjacent a skin surface of the subject such that the dielectric assembly attenuates the local electric fields induced by the magnetic field gradients, which would be likely to induce PNS when the dielectric assembly is not arranged adjacent the skin surface of the subject. As a result of the dielectric assembly placed adjacent the skin surface of the subject, the gradient coil settings can be increased above the threshold without inducing PNS in the subject.Type: ApplicationFiled: August 15, 2022Publication date: December 8, 2022Applicant: SYNAPTIVE MEDICAL INC.Inventors: Chad Tyler HARRIS, Geron ANDRÉ BINDSEIL, William Bradfield HANDLER
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Publication number: 20220155392Abstract: Magnetic resonance imaging (MRI) systems and methods, involving: a main magnet configured to generate a magnet field for MRI; a transmit radio frequency (RF) coil assembly configured to transmit an RF pulse into a portion of a subject; an RF coil assembly configured to, in response to the an RF pulse, receive MR signals emitted from the portion of the subject; and a gradient coil assembly having coil windings arranged in a radial layer and a first set of electrical connectors embedded in the radial layer to reduce a radial extent occupied by the gradient coil assembly, an electrical connector in the first set of electrical connectors configured to cross over a portion of the coil windings in the radial layer, the first set of electrical connectors configured to drive the coil windings with a current sufficient to generate a perturbation in the magnet field such that the MR signals encode an MR image based on the perturbation, and the radial layer having a depressed area configured to radially constrain the elType: ApplicationFiled: February 2, 2022Publication date: May 19, 2022Inventors: Geron André Bindseil, William Bradfield Handler
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Publication number: 20220146612Abstract: An asymmetric electromagnet system, method, and method of producing an asymmetric electromagnet system, wherein the asymmetric electromagnet system is for generating an imaging magnetic field in an imaging region with an imaging isocentre, the imaging region being asymmetrically positioned within a gradient coil bore inside a magnetic resonance imaging (MRI) system during imaging, the electromagnet assembly comprising: an asymmetric gradient coil configured to generate a gradient field in the asymmetrically positioned imaging region, at least one gradient axis having the gradient field with a constant offset component such that the position at which the gradient field passes through zero is offset with respect to the imaging isocentre of the asymmetrically positioned imaging region.Type: ApplicationFiled: January 20, 2022Publication date: May 12, 2022Inventors: Geron Andre BINDSEIL, Blaine Alexander CHRONIK, Ian Robert Oliphant CONNELL, Andrew Thomas CURTIS, William Bradfield HANDLER, Chad Tyler HARRIS, Jeff Alan STAINSBY, Philip J. BEATTY
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Publication number: 20220137167Abstract: A coil apparatus and methods for magnetic resonance imaging involving a wire winding, the wire winding having at least one of: a hollow cross-section wire and a solid cross-section wire, the solid cross-section wire having at least one of: a solid small cross-section wire and a solid large cross-section wire, the solid large cross-section wire having a thickness greater than that of the solid small cross-section wire, and the solid small cross-section wire disposed in one of adjacent and proximate at least one of the hollow cross-section wire and the solid large cross-section wire, whereby at least one of current density, winding density, and heat extraction are increasable.Type: ApplicationFiled: December 20, 2021Publication date: May 5, 2022Applicant: SYNAPTIVE MEDICAL INC.Inventors: Geron André BINDSEIL, Ian Robert Oliphant CONNELL, William Bradfield HANDLER, Chad Tyler HARRIS
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Patent number: 11269032Abstract: A magnetic resonance (MR) imaging system includes: a main magnet configured to generate a volume of magnet field suitable for forming MR imaging; a transmit radio frequency (RF) coil assembly configured to transmit at least one RF signal; a receive radio frequency (RF) coil assembly configured to, in response to the at least one RF pulse, receive MR signals; a gradient coil assembly comprising (i) windings of coils arranged in a radial layer, and (ii) a first set of connectors embedded in the radial layer to reduce a radial extent occupied by the gradient coil assembly, the first set of electrical connectors configured to drive the windings of coils; and a control unit coupled to the transmit RF coil assembly, the receive RF coil assembly, and the gradient coils, the control unit configured to synchronously operate the gradient coil assembly, the transmit coil assembly, and the receive coil assembly.Type: GrantFiled: May 18, 2018Date of Patent: March 8, 2022Assignee: SYNAPTIVE MEDICAL INC.Inventors: Geron Andre Bindseil, William Bradfield Handler
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Patent number: 11249157Abstract: A coil apparatus and methods for magnetic resonance imaging involving a wire winding, the wire winding having at least one of: a hollow cross-section wire and a solid cross-section wire, the solid cross-section wire having at least one of: a solid small cross-section wire and a solid large cross-section wire, the solid large cross-section wire having a thickness greater than that of the solid small cross-section wire, and the solid small cross-section wire disposed in one of adjacent and proximate at least one of the hollow cross-section wire and the solid large cross-section wire, whereby at least one of current density, winding density, and heat extraction are increasable.Type: GrantFiled: September 13, 2019Date of Patent: February 15, 2022Assignee: SYNAPTIVE MEDICAL INC.Inventors: Geron André Bindseil, Ian Robert Oliphant Connell, William Bradfield Handler, Chad Tyler Harris
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Patent number: 11243283Abstract: An asymmetric electromagnet system, method, and method of producing an asymmetric electromagnet system, wherein the asymmetric electromagnet system is for generating an imaging magnetic field in an imaging region with an imaging isocentre, the imaging region being asymmetrically positioned within a gradient coil bore inside a magnetic resonance imaging (MRI) system during imaging, the electromagnet assembly comprising: an asymmetric gradient coil configured to generate a gradient field in the asymmetrically positioned imaging region, at least one gradient axis having the gradient field with a constant offset component such that the position at which the gradient field passes through zero is offset with respect to the imaging isocentre of the asymmetrically positioned imaging region.Type: GrantFiled: July 29, 2020Date of Patent: February 8, 2022Assignee: SYNAPTIVE MEDICAL INC.Inventors: Geron Andre Bindseil, Blaine Alexander Chronik, Ian Robert Oliphant Connell, Andrew Thomas Curtis, William Bradfield Handler, Chad Tyler Harris, Jeff Alan Stainsby, Philip J. Beatty
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Publication number: 20220034983Abstract: An asymmetric electromagnet system, method, and method of producing an asymmetric electromagnet system, wherein the asymmetric electromagnet system is for generating an imaging magnetic field in an imaging region with an imaging isocentre, the imaging region being asymmetrically positioned within a gradient coil bore inside a magnetic resonance imaging (MRI) system during imaging, the electromagnet assembly comprising: an asymmetric gradient coil configured to generate a gradient field in the asymmetrically positioned imaging region, at least one gradient axis having the gradient field with a constant offset component such that the position at which the gradient field passes through zero is offset with respect to the imaging isocentre of the asymmetrically positioned imaging region.Type: ApplicationFiled: July 29, 2020Publication date: February 3, 2022Inventors: Geron Andre BINDSEIL, Blaine Alexander CHRONIK, Ian Robert Oliphant CONNELL, Andrew Thomas CURTIS, William Bradfield HANDLER, Chad Tyler HARRIS, Jeff Alan STAINSBY, Philip J. BEATTY
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Publication number: 20210080528Abstract: A coil apparatus and methods for magnetic resonance imaging involving a wire winding, the wire winding having at least one of: a hollow cross-section wire and a solid cross-section wire, the solid cross-section wire having at least one of: a solid small cross-section wire and a solid large cross-section wire, the solid large cross-section wire having a thickness greater than that of the solid small cross-section wire, and the solid small cross-section wire disposed in one of adjacent and proximate at least one of the hollow cross-section wire and the solid large cross-section wire, whereby at least one of current density, winding density, and heat extraction are increasable.Type: ApplicationFiled: September 13, 2019Publication date: March 18, 2021Inventors: Geron André BINDSEIL, Ian Robert Oliphant CONNELL, William Bradfield HANDLER, Chad Tyler HARRIS
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Patent number: 10658109Abstract: A method of manufacturing electromagnet coils for use in a magnetic resonance imaging (MRI) system is provided. The method comprises forming a coil representation of a coil surface for the electromagnet coils; setting a plurality of performance metric requirements for a plurality of performance metrics for the electromagnet coils, the plurality of performance metrics including a magnetic field-shape metric and an eddy-field metric; forming a performance functional, based on the coil representation and the plurality of performance metrics, for generating a current density pattern over the coil surface; optimizing the performance functional based on the plurality of performance metric requirements; generating a current density pattern over the coil surface based on the minimized performance functional; and obtaining coil windings from the current density pattern.Type: GrantFiled: December 11, 2017Date of Patent: May 19, 2020Assignee: SYNAPTIVE MEDICAL (BARBADOS) INC.Inventors: Geron André Bindseil, Chad Tyler Harris, William Bradfield Handler, Blaine Alexander Chronik
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Publication number: 20190353728Abstract: A magnetic resonance (MR) imaging system includes: a main magnet configured to generate a volume of magnet field suitable for forming MR imaging; a transmit radio frequency (RF) coil assembly configured to transmit at least one RF signal; a receive radio frequency (RF) coil assembly configured to, in response to the at least one RF pulse, receive MR signals; a gradient coil assembly comprising (i) windings of coils arranged in a radial layer, and (ii) a first set of connectors embedded in the radial layer to reduce a radial extent occupied by the gradient coil assembly, the first set of electrical connectors configured to drive the windings of coils; and a control unit coupled to the transmit RF coil assembly, the receive RF coil assembly, and the gradient coils, the control unit configured to synchronously operate the gradient coil assembly, the transmit coil assembly, and the receive coil assembly.Type: ApplicationFiled: May 18, 2018Publication date: November 21, 2019Inventors: Geron Andre Bindseil, William Bradfield Handler
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Patent number: 10393837Abstract: A magnetic resonance imaging (MRI) system is provided. The system includes a main field magnet generating a main magnetic field B0. Moreover, the system further includes an integrated magnet device. The integrated magnet device has field-shift shield coils and gradient coils. The MRI system further includes a removable insert comprising field-shift shield coils. At least one substrate layer is included in the integrated magnet device to provide mechanical support for the field-shift coils and the gradient coils. Moreover, a cooling mechanism is provided to cool at least some of the magnets.Type: GrantFiled: February 23, 2015Date of Patent: August 27, 2019Inventors: Geron Andre Bindseil, Chad Tyler Harris, William Bradfield Handler, Blaine Alexander Chronik
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Patent number: 10185005Abstract: A magnetic resonance imaging (MRI) system is provided. The system includes a main field magnet generating a main magnetic field B0. Moreover, the system further includes an integrated magnet device. The integrated magnet device has field-shift coils including primary field-shift coils and field-shift shield coils, the primary field shift coils being placed closer to an object to be imaged within the imaging volume than the field-shift shield coils. The gradient coils are placed between the primary field-shift coils and field-shift shield coils. At least one substrate layer is included to provide mechanical support for the field-shift coils and the gradient coils.Type: GrantFiled: February 23, 2015Date of Patent: January 22, 2019Inventors: Geron Andre Bindseil, Chad Tyler Harris, William Bradfield Handler, Blaine Alexander Chronik
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Publication number: 20180321342Abstract: In some implementations, a system includes: a housing having a bore in which a subject to be imaged is placed; a main magnet accommodated by the housing and configured to generate a substantially uniform magnetic field within the bore; an N electromagnet comprising a conductive member that includes a first set of one or more non-conductive paths that define at least one conductive channel and a second set of one or more non-conductive paths that, when an electric current is applied to the electromagnet, constrain the electric current along a defined portion of the at least one conductive channel; and a power amplifier configured to apply an electric current to the electromagnet.Type: ApplicationFiled: November 6, 2015Publication date: November 8, 2018Inventors: Geron André Bindseil, William Bradfield Handler
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Publication number: 20180102215Abstract: A method of manufacturing electromagnet coils for use in a magnetic resonance imaging (MRI) system is provided. The method comprises forming a coil representation of a coil surface for the electromagnet coils; setting a plurality of performance metric requirements for a plurality of performance metrics for the electromagnet coils, the plurality of performance metrics including a magnetic field-shape metric and an eddy-field metric; forming a performance functional, based on the coil representation and the plurality of performance metrics, for generating a current density pattern over the coil surface; optimizing the performance functional based on the plurality of performance metric requirements; generating a current density pattern over the coil surface based on the minimized performance functional; and obtaining coil windings from the current density pattern.Type: ApplicationFiled: December 11, 2017Publication date: April 12, 2018Inventors: Geron André Bindseil, Chad Tyler Harris, William Bradfield Handler, Blaine Alexander Chronik
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Publication number: 20180024211Abstract: A magnetic resonance imaging (MRI) system is provided. The system includes a main field magnet generating a main magnetic field B0. Moreover, the system further includes an integrated magnet device. The integrated magnet device has field-shift coils including primary field-shift coils and field-shift shield coils, the primary field shift coils being placed closer to an object to be imaged within the imaging volume than the field-shift shield coils. The gradient coils are placed between the primary field-shift coils and field-shift shield coils. At least one substrate layer is included to provide mechanical support for the field-shift coils and the gradient coils.Type: ApplicationFiled: February 23, 2015Publication date: January 25, 2018Inventors: Geron Andre BINDSEIL, Chad Tyler HARRIS, William Bradfield HANDLER, Blaine Alexander CHRONIK
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Patent number: 9842689Abstract: A method of manufacturing electromagnet coils for use in a magnetic resonance imaging (MRI) system is provided. The method comprises forming a coil representation of a coil surface for the electromagnet coils; setting a plurality of performance metric requirements for a plurality of performance metrics for the electromagnet coils, the plurality of performance metrics including a magnetic field-shape metric and an eddy-field metric; forming a performance functional, based on the coil representation and the plurality of performance metrics, for generating a current density pattern over the coil surface; optimizing the performance functional based on the plurality of performance metric requirements; generating a current density pattern over the coil surface based on the minimized performance functional; and obtaining coil windings from the current density pattern.Type: GrantFiled: December 9, 2014Date of Patent: December 12, 2017Assignee: SYNAPTIVE MEDICAL (BARBADOS) INC.Inventors: Geron André Bindseil, Chad Tyler Harris, William Bradfield Handler, Blaine Alexander Chronik