Patents by Inventor Jessi E. Johnson
Jessi E. Johnson 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: 10383686Abstract: According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.Type: GrantFiled: October 9, 2018Date of Patent: August 20, 2019Assignee: Epix Therapeutics, Inc.Inventors: Dorin Panescu, Eric Andrew Schultheis, Josef Vincent Koblish, Jessi E. Johnson
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Patent number: 10321954Abstract: A tissue interface module has an applicator chamber on a proximal side of the tissue interface module and a tissue acquisition chamber on a distal side of the tissue interface module. The applicator chamber may include: an opening adapted to receive the applicator; an attachment mechanism positioned in the applicator chamber and adapted to attach the tissue interface module to the applicator; a sealing member positioned at a proximal side of the applicator chamber; and a vacuum interface positioned at a proximal side of the applicator chamber and adapted to receive a vacuum inlet positioned on a distal end of the applicator. The invention also includes corresponding methods.Type: GrantFiled: April 4, 2016Date of Patent: June 18, 2019Assignee: MIRADRY, INC.Inventors: Yoav Ben-Haim, Peter J. Bentley, Donghoon Chun, Daniel E. Francis, Jessi E. Johnson, Kevin Shan, Ted Y. Su, Steven W. Kim
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Patent number: 10231779Abstract: According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.Type: GrantFiled: December 16, 2016Date of Patent: March 19, 2019Assignee: Epix Therapeutics, Inc.Inventors: Dorin Panescu, Eric Andrew Schultheis, Josef Vincent Koblish, Jessi E. Johnson
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Publication number: 20190038348Abstract: Systems and methods for facilitating assessment of a nature of contact between an electrode assembly of an ablation catheter and viable body tissue are disclosed herein. In some embodiments, a method comprises obtaining a first detected voltage between a first electrode and a second electrode, wherein the first and second electrodes are positioned along an electrode assembly of the ablation catheter, and wherein the first electrode is distal to the second electrode, obtaining a second detected voltage between the second electrode and a third electrode, the third electrode positioned proximal to the second electrode.Type: ApplicationFiled: October 9, 2018Publication date: February 7, 2019Inventors: Josef Vincent Koblish, Donghoon Chun, Jessi E. Johnson
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Publication number: 20190038346Abstract: Systems, devices and methods of determining orientation of a distal end of a medical instrument (e.g., electrode-tissue orientation of an RF ablation catheter) are described herein. One or more processors may be configured to receive temperature measurements from each of a plurality of temperature-measurement devices distributed along a length of the distal end of the medical instrument and determine the orientation from a group of two or more possible orientation options based on whether temperature measurement values or characteristics of temperature response determined from the temperature measurement values satisfy one or more orientation criteria.Type: ApplicationFiled: October 12, 2017Publication date: February 7, 2019Inventors: Dorin Panescu, Josef Vincent Koblish, Donghoon Chun, Jessi E. Johnson, Eric Andrew Schultheis
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Publication number: 20190038349Abstract: Systems and methods for facilitating assessment of a nature of contact between an electrode assembly of an ablation catheter and viable body tissue are disclosed herein. In some embodiments, a method comprises obtaining a first detected voltage between a first electrode and a second electrode, wherein the first and second electrodes are positioned along an electrode assembly of the ablation catheter, and wherein the first electrode is distal to the second electrode, obtaining a second detected voltage between the second electrode and a third electrode, the third electrode positioned proximal to the second electrode.Type: ApplicationFiled: October 9, 2018Publication date: February 7, 2019Inventors: Josef Vincent Koblish, Donghoon Chun, Jessi E. Johnson
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Publication number: 20190038347Abstract: According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.Type: ApplicationFiled: October 9, 2018Publication date: February 7, 2019Inventors: Dorin Panescu, Eric Andrew Schultheis, Josef Vincent Koblish, Jessi E. Johnson
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Publication number: 20180310988Abstract: Radiometric systems may comprise a radiometer, an antenna and a processor communicatively coupled together. The processor may provide a contact-focused output based on filtering or other processing of a raw radiometric output signal. The contact-focused output may facilitate determination of whether contact has been achieved and/or assessment of contact. A miniaturized reflectometer may be configured to determine an amount of reflected power from the antenna. The processor may be configured to determine a reflection coefficient of the reflected power determined by the reflectometer and to identify tissue type based on the reflection coefficient. Systems and methods for facilitating deeper temperature measurements of a radiometer are described.Type: ApplicationFiled: November 18, 2015Publication date: November 1, 2018Inventors: Dorin Panescu, Jessi E. Johnson, Josef Vincent Koblish, John F. McCarthy
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Publication number: 20180289284Abstract: Systems, devices and methods of determining orientation of a distal end of a medical instrument (e.g., electrode-tissue orientation of an RF ablation catheter) are described herein. One or more processors may be configured to receive temperature measurements from each of a plurality of temperature-measurement devices distributed along a length of the distal end of the medical instrument and determine the orientation from a group of two or more possible orientation options based on whether temperature measurement values or characteristics of temperature response determined from the temperature measurement values satisfy one or more orientation criteria.Type: ApplicationFiled: June 8, 2018Publication date: October 11, 2018Inventors: Dorin Panescu, Josef Vincent Koblish, Donghoon Chun, Jessi E. Johnson, Eric Andrew Schultheis
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Patent number: 9993178Abstract: Systems, devices and methods of determining orientation of a distal end of a medical instrument (e.g., electrode-tissue orientation of an RF ablation catheter) are described herein. One or more processors may be configured to receive temperature measurements from each of a plurality of temperature-measurement devices distributed along a length of the distal end of the medical instrument and determine the orientation from a group of two or more possible orientation options based on whether temperature measurement values or characteristics of temperature response determined from the temperature measurement values satisfy one or more orientation criteria.Type: GrantFiled: October 12, 2017Date of Patent: June 12, 2018Assignee: EPIX THERAPEUTICS, INC.Inventors: Dorin Panescu, Josef Vincent Koblish, Donghoon Chun, Jessi E. Johnson, Eric Andrew Schultheis
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Publication number: 20180078170Abstract: Systems, devices and methods of determining orientation of a distal end of a medical instrument (e.g., electrode-tissue orientation of an RF ablation catheter) are described herein. One or more processors may be configured to receive temperature measurements from each of a plurality of temperature-measurement devices distributed along a length of the distal end of the medical instrument and determine the orientation from a group of two or more possible orientation options based on whether temperature measurement values or characteristics of temperature response determined from the temperature measurement values satisfy one or more orientation criteria.Type: ApplicationFiled: October 12, 2017Publication date: March 22, 2018Inventors: Dorin Panescu, Josef Vincent Koblish, Donghoon Chun, Jessi E. Johnson, Eric Andrew Schultheis
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Publication number: 20170354475Abstract: According to some embodiments, systems for facilitating consistent radiometric tissue contact detection independent of orientation comprise a medical instrument having an antenna positioned at a distal end, an energy delivery element positioned at a distal end of the medical instrument, a radiometer, an impedance transformation network positioned between the antenna and the radiometer, and a processor configured to receive an input signal from the radiometer and provide an output indicative of an amount of tissue contact based upon the input signal. The impedance transformation network may be tuned to provide a substantially uniform radiometric response independent of an orientation of the antenna with respect to the tissue as the antenna is brought into contact with the tissue of a subject.Type: ApplicationFiled: November 18, 2015Publication date: December 14, 2017Inventors: Robert Chris Allison, Jessi E. Johnson, Dorin Panescu, John F. McCarthy
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Publication number: 20170340377Abstract: According to some embodiments, a medical instrument comprises an elongate body having a proximal end and a distal end and a pair of electrodes or electrode portions (for example, a split-tip electrode assembly). Systems and methods are described herein that perform contact sensing and/or ablation confirmation based on electrical measurements obtained while energy of different frequencies are applied to the pair of electrodes or electrode portions. The contact sensing systems and methods may calibrate network parameter measurements to compensate for a hardware unit in a network parameter measurement circuit or to account for differences in cables, instrumentation or hardware used.Type: ApplicationFiled: April 28, 2017Publication date: November 30, 2017Inventors: Dorin Panescu, Jessi E. Johnson
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Publication number: 20170340384Abstract: Systems, methods and devices for creating an effect using microwave energy to specified tissue are disclosed herein. A system for the application of microwave energy to a tissue can include, in some embodiments, a signal generator adapted to generate a microwave signal having predetermined characteristics, an applicator connected to the generator and adapted to apply microwave energy to tissue, the applicator comprising one or more microwave antennas and a tissue interface, a vacuum source connected to the tissue interface, a cooling source connected to said tissue interface, and a controller adapted to control the signal generator, the vacuum source, and the coolant source. The tissue may include a first layer and a second layer, the second layer below the first layer, and the controller is configured such that the system delivers energy such that a peak power loss density profile is created in the second layer.Type: ApplicationFiled: January 13, 2017Publication date: November 30, 2017Inventors: Mark E. DEEM, Daniel FRANCIS, Jessi E. JOHNSON, Steven KIM, Alexey SALAMINI, Ted SU, Peter SMITH, Dan HALLOCK
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Publication number: 20170189105Abstract: According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.Type: ApplicationFiled: December 16, 2016Publication date: July 6, 2017Inventors: Dorin Panescu, Eric Andrew Schultheis, Josef Vincent Koblish, Jessi E. Johnson
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Patent number: 9636164Abstract: According to some embodiments, a medical instrument comprises an elongate body having a proximal end and a distal end and a pair of electrodes or electrode portions (for example, a split-tip electrode assembly). Systems and methods are described herein that perform contact sensing and/or ablation confirmation based on electrical measurements obtained while energy of different frequencies are applied to the pair of electrodes or electrode portions. The contact sensing systems and methods may calibrate network parameter measurements to compensate for a hardware unit in a network parameter measurement circuit or to account for differences in cables, instrumentation or hardware used.Type: GrantFiled: June 10, 2016Date of Patent: May 2, 2017Assignee: Advanced Cardiac Therapeutics, Inc.Inventors: Dorin Panescu, Jessi E. Johnson
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Publication number: 20170079545Abstract: According to some embodiments, methods and systems of enhancing a map of a targeted anatomical region comprise receiving mapping data from a plurality of mapping electrodes, receiving high-resolution mapping data from a high-resolution roving electrode configured to be moved to locations between the plurality of mapping electrodes, wherein the mapping system is configured to supplement, enhance or refine a map of the targeted anatomical region or to directly create a high-resolution three-dimensional map using the processor receiving the data obtained from the plurality of mapping electrodes and from the high-resolution roving electrode.Type: ApplicationFiled: December 5, 2016Publication date: March 23, 2017Inventors: Dorin Panescu, Josef Vincent Koblish, Jessi E. Johnson
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Patent number: 9592092Abstract: According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.Type: GrantFiled: July 19, 2016Date of Patent: March 14, 2017Assignee: Advanced Cardiac Therapeutics, Inc.Inventors: Dorin Panescu, Jessi E. Johnson, Eric Andrew Schultheis, Josef Vincent Koblish
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Patent number: 9522037Abstract: According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.Type: GrantFiled: July 19, 2016Date of Patent: December 20, 2016Assignee: Advanced Cardiac Therapeutics, Inc.Inventors: Dorin Panescu, Eric Andrew Schultheis, Josef Vincent Koblish, Jessi E. Johnson
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Patent number: 9517103Abstract: According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.Type: GrantFiled: June 10, 2016Date of Patent: December 13, 2016Assignee: Advanced Cardiac Therapeutics, Inc.Inventors: Dorin Panescu, Josef Vincent Koblish, Eric Andrew Schultheis, Jessi E. Johnson