Patents by Inventor Michael Anthony Barry

Michael Anthony Barry 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: 20210401495
    Abstract: A system for monitoring tissue lesion development during a medical ablation process applied to a patient, the system comprising a catheter ablation device having at least one catheter electrode, the device connectable via an electrical feedline to a source of electrical energy and configured to apply ablation energy to ablate tissue in a target region, a plurality of external electrodes for application to the body of the patient, measurement circuitry for determining an electrical characteristic of a current path between the at least one catheter electrode and the external electrodes in the absence of said application of ablation energy, and an electrical controller.
    Type: Application
    Filed: September 7, 2021
    Publication date: December 30, 2021
    Applicants: The University of Sydney, Western Sydney Local Health District
    Inventors: Pierre Qian, Michael Anthony Barry, Alistair McEwan, Duc Minh Nguyen
  • Publication number: 20210196378
    Abstract: The invention relates to a catheter ablation device for delivery of energy to a selected region of tissue, the device having an antenna portion including a radiating antenna electrically connectable via an electrical feedline to a source of energy, the antenna configured to generate an electromagnetic field able to ablate tissue in said selected region of tissue, the device including a thermocouple having a hot junction formed by electrical connection between a thermocouple conductor and a conducting part of the electrical feedline. This avoids the need for a dedicated thermocouple conductor pair, as the second conductor of the thermocouple is provided by the feedline used to supply the ablation energy to the device antenna.
    Type: Application
    Filed: February 9, 2021
    Publication date: July 1, 2021
    Applicants: The University of Sydney, Western Sydney Local Health District
    Inventors: Pierre Qian, Michael Anthony Barry
  • Publication number: 20210186608
    Abstract: The invention relates to an ablation device for delivery of microwave energy to a selected region of tissue, in particular for producing deep endocardial or epicardial ventricular lesions, such as for the treatment or prevention of arrhythmias.
    Type: Application
    Filed: January 6, 2021
    Publication date: June 24, 2021
    Applicants: The University of Sydney, Western Sydney Local Health District
    Inventors: Pierre Qian, Michael Anthony Barry
  • Publication number: 20210186609
    Abstract: The invention relates to a catheter ablation device for delivery of energy (such as microwave energy) via a radiating antenna to a selected region of tissue, the device having an elongated catheter with an outer sheath, configured to allow flow of fluid along the catheter to exit through one or more orifices adjacent to the antenna. The device includes an impedance monitoring system having two electrodes arranged respectively inside and outside said catheter sheath, the impedance monitoring system including an electric circuit incorporating an ionic conductivity path through said fluid. The device is introduced into a blood vessel and the invention allows monitoring of changes in the size of the blood vessel during an ablation procedure, as it can be used to measure the impedance of an electrical circuit including a blood path in the blood vessel in the region of the ablation, the measured impedance providing a measure of vascular calibre.
    Type: Application
    Filed: February 9, 2021
    Publication date: June 24, 2021
    Applicants: The University of Sydney, Western Sydney Local Health District
    Inventors: Pierre Qian, Michael Anthony Barry
  • Patent number: 11039884
    Abstract: A microwave ablation device (10) comprises a feed line (22), a microwave radiator and a device outer sheath (46) in which at least part of the feed line (22) is contained. The sheath (46) in use, allows an irrigation liquid to flow therethrough, wherein the feed line has a junction (38) with the radiator (22) has an outer conducting shield (28) terminating and insulated at the junction (38). The feed line (22) has a conductive core (32) that extends to the radiator (24). The conductive core forms a radiating element (34) electrically insulated from its surrounding environment. The radiator (24) is unbalanced.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: June 22, 2021
    Assignees: The University of Sydney, Western Sydney Local Health District
    Inventors: Pierre Qian, Michael Anthony Barry
  • Publication number: 20200375658
    Abstract: The invention concerns a method for intra-operative monitoring of the effectiveness of transcatheter renal denervation in a patient, to assist in guiding the procedure and in particular for identifying a physiological procedural endpoint. Through aorticorenal ganglia pace-capture, renal sympathetic nerve function can be assessed. In accordance with the invention, sustained reduction or abolition of renal vasoconstriction induced by the pacing is used as an indicator of successful renal denervation.
    Type: Application
    Filed: August 14, 2020
    Publication date: December 3, 2020
    Applicants: The University of Sydney, Western Sydney Local Health District
    Inventors: Pierre Qian, Michael Anthony Barry
  • Publication number: 20180221089
    Abstract: A microwave ablation device (10) comprises a feed line (22), a microwave radiator and a device outer sheath (46) in which at least part of the feed line (22) is contained. The sheath (46) in use, allows an irrigation liquid to flow therethrough, wherein the feed line has a junction (38) with the radiator (22) has an outer conducting shield (28) terminating and insulated at the junction (38). The feed line (22) has a conductive core (32) that extends to the radiator (24). The conductive core forms a radiating element (34) electrically insulated from its surrounding environment. The radiator (24) is unbalanced.
    Type: Application
    Filed: June 10, 2016
    Publication date: August 9, 2018
    Applicants: The University of Sydney, Western Sydney Local Health District
    Inventors: Pierre Qian, Michael Anthony Barry
  • Patent number: 8118807
    Abstract: A biomedical return electrode for electrosurgery or radiofrequency (RF), a biomedical electrode pad (100), a system (300), and a method of treating tissue using a biomedical return electrode are disclosed. The biomedical return electrode comprises an electrode conductor (114) for receiving electrical energy from tissue via a return path, and a thermochromic liquid crystal (TLC) layer (116) coupled to the conductor (114). The TLC layer (116) changes color at one or more sites dependent upon the conductor temperature at each site. The TLC layer (116) changes color in a predetermined range of temperatures from about 40° C. to about 50° C. to alert an operator about the risk of a burn occurring. The biomedical electrode pad (100) comprises at least one such biomedical return electrode and a conductive body (112) to form a contact with tissue. The system (300) comprises an apparatus for delivering electrical energy to tissue and such a biomedical electrode pad (100).
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: February 21, 2012
    Assignee: Sydney West Area Health Service
    Inventors: Aravinda Thiagalingam, Pramesh Kovoor, David Leslie Ross, Michael Anthony Barry
  • Publication number: 20080195089
    Abstract: A biomedical return electrode for electrosurgery or radiofrequency (RF), a biomedical electrode pad (100), a system (300), and a method of treating tissue using a biomedical return electrode are disclosed. The biomedical return electrode comprises an electrode conductor (114) for receiving electrical energy from tissue via a return path, and a thermochromic liquid crystal (TLC) layer (116) coupled to the conductor (114). The TLC layer (116) changes colour at one or more sites dependent upon the conductor temperature at each site. The TLC layer (116) changes colour in a predetermined range of temperatures from about 40° C. to about 50° C. to alert an operator about the risk of a burn occurring. The biomedical electrode pad (100) comprises at least one such biomedical return electrode and a conductive body (112) to form a contact with tissue. The system (300) comprises an apparatus for delivering electrical energy to tissue and such a biomedical electrode pad (100).
    Type: Application
    Filed: April 18, 2005
    Publication date: August 14, 2008
    Applicant: SYDNEY WEST AREA HEALTH SERVICE
    Inventors: Aravinda Thiagalingam, Pramesh Kovoor, David Leslie Ross, Michael Anthony Barry