Patents by Inventor Tsuyoshi Hayashida

Tsuyoshi Hayashida 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: 10695118
    Abstract: An operation method of an electric power source device for operating a high-frequency treatment instrument configured to perform a high-frequency treatment on a biological tissue includes causing a high-frequency electric power source circuit to output electric power; acquiring an initial impedance value in a first period from a start of the output; determining an increase rate of an output voltage relative to time; increasing the output voltage of the high-frequency electric power source circuit in accordance with the increase rate in a second period; acquiring the value relating to impedance of the biological tissue in the second period; and terminating the second period after the value relating to the impedance reaches a minimum value.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: June 30, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Danilo Legaspi, Tsuyoshi Hayashida
  • Publication number: 20200168807
    Abstract: An organic electron transport material, which includes a phosphine oxide derivative represented by the following Formula (1): R1 represents an atomic group which has either or both of one or more aryl groups and one or more heteroaryl groups and which may have one or more phosphine oxide group, and R2 to R9 each independently represent an atom or an atomic group selected from the group consisting of a hydrogen atom, a halogen atom, a cyano group, a C1-C12 linear or branched alkyl group, a linear or branched fluoroalkyl group, an aryl group, a substituted aryl group, a heteroaryl group, and a substituted heteroaryl group.
    Type: Application
    Filed: November 16, 2016
    Publication date: May 28, 2020
    Inventors: Tsuyoshi Hayashida, Masataka Watanabe, Masanobu Kotsubo, Izumi Maki, Mitsuharu Noto
  • Patent number: 10624692
    Abstract: A power supply apparatus is for a treatment instrument including a probe having electrical conductivity which vibrates, a grasping member that is opened and closed with respect to the probe and an electrode provided in the grasping member. The power supply apparatus supplies high-frequency power between the probe and the electrode. The power supply apparatus includes a resistance acquisition circuit which repeatedly acquires a resistance value of electrical resistance between the probe and the electrode, a condition determination circuit which acquires the number of times the resistance value satisfies a predetermined condition while the probe is vibrating and power is supplied between the probe and the electrode, and a determination circuit which determines whether or not the probe and the electrode are electrically short-circuited based on the number of times.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: April 21, 2020
    Assignee: OLYMPUS CORPORATION
    Inventors: Tsunetaka Akagane, Ko Kawashima, Tsuyoshi Hayashida
  • Publication number: 20200000508
    Abstract: A treatment system includes a treatment tool and an energy source apparatus used to supply electrical energy to the treatment tool. The treatment tool includes a heater and bipolar electrodes to grip a treatment target. The energy source apparatus includes a processor to control the output to the bipolar electrodes and the heater, respectively. The processor directs the output to the bipolar electrodes and detects an initial value of the impedance of the treatment target. The processor determines whether or not the impedance has reached a minimum value and then retrieves a parameter that is detected before the minimum value of the impedance is detected. The processor performs a first process and/or a second process based on the acquired parameter after the minimum value is detected. The first process determines whether or not the output to the heater is required. The second process sets a target value.
    Type: Application
    Filed: September 12, 2019
    Publication date: January 2, 2020
    Applicant: Olympus Corporation
    Inventors: Sadayoshi Takami, Tsuyoshi Hayashida, Tsunetaka Akagane, Kazue Tanaka
  • Publication number: 20200000509
    Abstract: A treatment system includes a treatment tool and an energy source apparatus. The treatment tool includes a heater and bipolar electrodes to grip a treatment target. The energy source apparatus supplies electrical energy to the treatment tool. A processor controls the output to the bipolar electrodes and the heater. The processor causes a high-frequency electric power to be output to the bipolar electrodes and detects a parameter that varies depending on tissue volume of the treatment target. The processor sets a target value related to an output control process for controlling the output to the heater. The processor controls the output to the heater so as to modify the treatment target with the heat of the heater. The processor increases the output and temperature to the heater until at least a predetermined point of time after starting the output control process for controlling the output to the heater.
    Type: Application
    Filed: September 12, 2019
    Publication date: January 2, 2020
    Applicant: Olympus Corporation
    Inventors: Tsuyoshi Hayashida, Sadayoshi Takami, Toshifumi Katsuragi, Yoshitaka Honda
  • Publication number: 20200000507
    Abstract: A processor of an electric power source device exercises control over a power output before a control switching time point based on a value related to initial impedance, and determines the control switching time point upon detecting that a value related to impedance of a living tissue is at a minimum. The processor sets a set electric-power value of the power output based on a parameter related to controlling the power output before the control switching time point, and performs constant-electric-power control by controlling the power output using the electric-power value at and after the control switching time point.
    Type: Application
    Filed: August 30, 2019
    Publication date: January 2, 2020
    Applicant: OLYMPUS CORPORATION
    Inventors: Tsuyoshi HAYASHIDA, Yoshitaka HONDA, Norihiko HAREYAMA, Ko KAWASHIMA, Kenji MATSUKI
  • Publication number: 20190247110
    Abstract: An electrosurgical device: forceps having: a first working arm, a second working arm, wherein the electrosurgical device has a first electrosurgical configuration where the first working arm and the second working arm are in an opposed position so that the forceps deliver a first therapy current that flows between the first working arm and the second working arm; and wherein the electrosurgical device has a second electrosurgical configuration when the first working arm, the second working arm, or both are repositionable relative to each other so that the first working arm is extended with respect to the second working arm or vice versa and a second therapy current is delivered from the first working arm to a remote electrode.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 15, 2019
    Inventors: Kester J. Batchelor, Nikhil M. Murdeshwar, Jyue Boon (Jonas) Lim, Dennis G. Lamser, Tsuyoshi Hayashida, Richard J. Curtis, Theodore Blus, Riyad Moe, Ryan Windgassen
  • Publication number: 20190201076
    Abstract: An energy treatment system and a output control method thereof according to embodiments of the present invention perform treatment by energy supply in which ultrasonic energy and high frequency energy are combined, stop or suppress discharge by reducing the output of high frequency energy within a set period when a state in which discharge is likely to occur during treatment is detected, and change the output of ultrasonic energy. In addition, in order for a user to continue treatment without feeling uncomfortable and to ensure incision performance, each output is controlled so that the set period is as short as possible or is supplemented, and also, the set period expires, and control is performed so as to reduce the possibility of discharge even at the time of returning.
    Type: Application
    Filed: March 11, 2019
    Publication date: July 4, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Satoshi HONDA, Tsuyoshi HAYASHIDA
  • Publication number: 20190142489
    Abstract: A method for controlling an energy treatment system includes performing treatment on a subject by a probe of an energy treatment instrument which outputs ultrasonic energy and high frequency energy in combination; setting an output reduction control period, based on information related to an amount of mist generated by the probe; and reducing the output of the high frequency energy during the output reduction control period when a precursor of occurrence of spark or occurrence of spark is detected.
    Type: Application
    Filed: January 10, 2019
    Publication date: May 16, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Tsuyoshi HAYASHIDA, Satoshi HONDA, Kazue TANAKA
  • Patent number: 10271895
    Abstract: An electrosurgical device: forceps having: a first working arm, a second working arm, wherein the electrosurgical device has a first electrosurgical configuration where the first working arm and the second working arm are in an opposed position so that the forceps deliver a first therapy current that flows between the first working arm and the second working arm; and wherein the electrosurgical device has a second electrosurgical configuration when the first working arm, the second working arm, or both are repositionable relative to each other so that the first working arm is extended with respect to the second working arm or vice versa and a second therapy current is delivered from the first working arm to a remote electrode.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: April 30, 2019
    Assignee: GYRUS ACMI INC
    Inventors: Kester J. Batchelor, Nikhil M. Murdeshwar, Jyue Boon (Jonas) Lim, Dennis G. Lamser, Tsuyoshi Hayashida, Richard J. Curtis, Theodore Blus, Riyad Moe, Ryan Windgassen
  • Patent number: 10251694
    Abstract: An operation method of an electric power source device for operating a high-frequency treatment instrument configured to perform a high-frequency treatment on a biological tissue includes causing a high-frequency electric power source circuit to output electric power; specifying an initial state of the biological tissue; acquiring a value relating to an impedance of the biological tissue; determining an additional impedance value based on the initial state; setting a stop impedance value which is the sum of the additional impedance value and a change-over impedance value; and causing the high-frequency electric power source circuit to stop the output, if the value relating to the impedance reaches the stop impedance value after the value relating to the impedance reached the change-over impedance value.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: April 9, 2019
    Assignee: OLYMPUS CORPORATION
    Inventors: Tsuyoshi Hayashida, Danilo Legaspi
  • Publication number: 20190059990
    Abstract: In a treatment system, an energy treatment instrument includes a pair of grasping pieces. An energy output source outputs electric energy to the energy treatment instrument, thereby applying treatment energy to a blood vessel grasped between the grasping pieces. A measurement section measures a blood pressure at a site related to the grasped blood vessel. A processor controls output of the electric energy from the energy output source based on a measurement result obtained by the measurement section, and thereby switches an actuation state of the energy treatment instrument between a first mode for coagulating the blood vessel and a second mode for coagulating the blood vessel target that is different from the first mode.
    Type: Application
    Filed: October 25, 2018
    Publication date: February 28, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Tsuyoshi HAYASHIDA, Satomi SAKAO, Tatsuro YAMAMOTO
  • Publication number: 20190046263
    Abstract: In a treatment system, a treatment instrument includes a pair of grasping pieces each of which includes an electrode. A control device outputs electric energy to the electrodes and thereby supplies a high-frequency current to a treatment target. The control device switches between a first mode and a second mode that is different from the first mode in control scheme regarding output of the electric energy to the electrodes, based on a load that acts on one of the grasping pieces.
    Type: Application
    Filed: October 19, 2018
    Publication date: February 14, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Tsuyoshi HAYASHIDA, Satomi SAKAO
  • Publication number: 20190046262
    Abstract: In a treatment system, an energy treatment instrument includes a pair of grasping pieces closing with respect to each other. An energy output source outputs electric energy to the energy treatment instrument, thereby applying treatment energy to a treatment target grasped between the grasping pieces. A processor creates an optical flow of the treatment target observed by an observation element, and switches an actuation state of the energy treatment instrument between a first mode for treating the treatment target and a second mode for treating the treatment target that is different from the first mode, based on the optical flow.
    Type: Application
    Filed: October 18, 2018
    Publication date: February 14, 2019
    Applicant: OLYMPUS CORPORATION
    Inventors: Tsuyoshi HAYASHIDA, Satomi SAKAO
  • Publication number: 20180318000
    Abstract: A controller carries out a single outputting phase in which only first electric energy is supplied to an electrode, and transitions the single outputting phase to a simultaneous outputting phase in which the first electric energy and second electric energy are simultaneously output and treated target is denatured due to both of a high-frequency current and treatment energy generated in a functioning element. The controller sets a control pattern relating to the treatment energy in the simultaneous outputting phase, based on an impedance at a certain time point in the single outputting phase and/or a variation with time of the impedance in the single outputting phase.
    Type: Application
    Filed: July 10, 2018
    Publication date: November 8, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Yoshitaka HONDA, Tsuyoshi HAYASHIDA, Danilo Jr. Baring LEGASPI
  • Publication number: 20180185089
    Abstract: An energy treatment instrument includes a first grasping piece, and a second grasping piece which opens or closes relative to the first grasping piece and which grasps a blood vessel between the first grasping piece and the second grasping piece. In accordance with the kind of blood vessel grasped between the first grasping piece and the second grasping piece, an actuation state of the energy treatment instrument is switched between a first mode to coagulate a blood vessel of a circulatory system, and a second mode to coagulate a blood vessel of a pulmonary circulation in contrast to the first mode.
    Type: Application
    Filed: February 28, 2018
    Publication date: July 5, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Tsuyoshi HAYASHIDA, Satomi SAKAO, Tatsuro YAMAMOTO
  • Publication number: 20180177544
    Abstract: An energy treatment instrument includes a first grasping piece, and a second grasping piece which opens or closes relative to the first grasping piece and which grasps a blood vessel between the first grasping piece and the second grasping piece. An actuation state of the energy treatment instrument is switched between a first mode to coagulate the blood vessel when a branch of the blood vessel is not present within a predetermined range from a position where the blood vessel is grasped, and a second mode to coagulate the blood vessel when the branch of the blood vessel is present within the predetermined range.
    Type: Application
    Filed: February 22, 2018
    Publication date: June 28, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Tsuyoshi Hayashida, Satomi Sakao
  • Publication number: 20180140346
    Abstract: A method of operating a power source device for a high-frequency treatment instrument adapted to perform high-frequency treatment for biological tissue includes causing a high-frequency power source circuit to output power; setting a target impedance value which gradually increases from a change-over impedance value to a stop impedance value; regularly comparing a measured impedance value to the target impedance value; causing the high-frequency power source circuit to lower the power by a first ratio if the measured impedance value is greater than the target impedance value, and to raise the power by a second ratio if the measured impedance value is smaller than the target impedance value; and causing the high-frequency power source circuit to terminate the output upon the value for impedance reaching the stop impedance value.
    Type: Application
    Filed: January 19, 2018
    Publication date: May 24, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Danilo LEGASPI, Tsuyoshi HAYASHIDA
  • Patent number: 9974596
    Abstract: A high-frequency control unit includes an integration value calculator calculating a measured integration value, which is a measured value of an integration value of an output high-frequency electric power from an output start time, with a passage of time. The high-frequency control unit includes a target locus setting section setting target locus which indicates, with a passage of time, a target integration value that is a target value of the integration value of the output high-frequency electric power from the output start time, and a controller comparing, with a passage of time, the measured integration value with the target locus, and controlling, with a passage of time, an output state of the high-frequency electric power based on a comparison result.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 22, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Sadayoshi Takami, Tsuyoshi Hayashida
  • Publication number: 20180116709
    Abstract: A therapeutic treatment system includes a holding section configured to hold a biological tissue, electrodes provided in the holding section and capable of outputting first high-frequency energy for sealing the biological tissue at a first sealing temperature and second high-frequency energy for dissecting the biological tissue at a first dissection temperature higher than the first sealing temperature, electrodes provided in the holding section and capable of outputting first thermal energy for sealing the biological tissue at a second sealing temperature higher than the first sealing temperature and second thermal energy for dissecting the biological tissue at a second dissection temperature lower than the first dissection temperature and higher than the second sealing temperature, and a control section configured to control temperature of each of the electrodes to output the second thermal energy after the output of the first high-frequency energy.
    Type: Application
    Filed: December 29, 2017
    Publication date: May 3, 2018
    Applicant: OLYMPUS CORPORATION
    Inventors: Yoshitaka Honda, Tsuyoshi Hayashida, Kazue Tanaka, Sumihito Konishi