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: 11369426
    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: Grant
    Filed: January 19, 2018
    Date of Patent: June 28, 2022
    Assignee: OLYMPUS CORPORATION
    Inventors: Danilo Legaspi, Tsuyoshi Hayashida
  • Patent number: 11317960
    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: Grant
    Filed: August 30, 2019
    Date of Patent: May 3, 2022
    Assignee: OLYMPUS CORPORATION
    Inventors: Tsuyoshi Hayashida, Yoshitaka Honda, Norihiko Hareyama, Ko Kawashima, Kenji Matsuki
  • Patent number: 11298177
    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: Grant
    Filed: September 12, 2019
    Date of Patent: April 12, 2022
    Assignee: OLYMPUS CORPORATION
    Inventors: Tsuyoshi Hayashida, Sadayoshi Takami, Toshifumi Katsuragi, Yoshitaka Honda
  • Publication number: 20220079652
    Abstract: A medical device includes: an end effector configured to apply treatment energy for treating a living tissue according to supplied power; a drive source configured to supply the power to the end effector; and a processor configured to classify, in a first time period after a supply of the power to the end effector is started, the living tissue into any one of a plurality of tissue types based on a first parameter detected in the first time period, control an operation of the drive source after the first time period based on the classified tissue type, reclassify the classified living tissue into any one of the plurality of tissue types based on a second parameter detected after the first time period, and control an operation of the drive source based on the tissue type into which the classified living tissue is reclassified.
    Type: Application
    Filed: November 26, 2021
    Publication date: March 17, 2022
    Applicant: OLYMPUS CORPORATION
    Inventors: Danilo LEGASPI, Tsuyoshi HAYASHIDA, Satoshi HONDA, Norihiko HAREYAMA
  • Publication number: 20220008115
    Abstract: An electrode unit comprises: an electrode supporting member provided with a pair of distal end rigid members surfaces of which are covered by an electrically insulating material; a treatment electrode configured with electrode bodies arranged in respective distal end portions of the pair of distal end rigid members and protruding downward respectively from the pair of distal end rigid members, and a spanning portion that spans respective lower end portions of the electrode bodies; and a detection sensor arranged on respective proximal end sides of the pair of distal end rigid members and configured to detect a contact state between the pair of distal end rigid members and tissue.
    Type: Application
    Filed: July 26, 2021
    Publication date: January 13, 2022
    Applicant: OLYMPUS CORPORATION
    Inventors: Soichi IKUMA, Tsuyoshi HAYASHIDA
  • Publication number: 20210378729
    Abstract: An electrode unit includes: an electrode supporting member provided with a pair of distal end rigid members, surfaces of which are covered by an electrically insulating material, and an elastic region having lower bending rigidity than bending rigidity of each of the pair of distal end rigid members; an electrode configured with electrode bodies respectively protruding downward from the pair of distal end rigid members of the electrode supporting member and a spanning portion that spans between respective lower end portions of the electrode bodies; and an operation member provided in a proximal end rigid member, and configured to move relative to the proximal end rigid member to cause the electrode to move in a direction in which the electrode protrudes relative to the distal end rigid members.
    Type: Application
    Filed: June 22, 2021
    Publication date: December 9, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Soichi Ikuma, Yuji Sakai, Tsuyoshi Hayashida, Takayuki Tsukagoshi
  • Publication number: 20210369327
    Abstract: An electrode unit configured to resect or coagulate tissue inside a subject by using a high-frequency current, including: an electrode supporting portion provided with a pair of distal end rigid portions surfaces of which are covered by an electrically insulating material, and an elastic region portion having lower bending rigidity than bending rigidity of each of the pair of distal end rigid portions, the elastic region portion being provided on a proximal end side of each of the pair of distal end rigid portions; and an electrode configured with electrode bodies respectively protruding downward from the pair of distal end rigid portions and an installation portion that installs respective lower ends of the electrode bodies.
    Type: Application
    Filed: June 11, 2021
    Publication date: December 2, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Soichi IKUMA, Yuji SAKAI, Tsuyoshi HAYASHIDA, Takayuki TSUKAGOSHI, Kei KUBO
  • Patent number: 11172981
    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: Grant
    Filed: October 18, 2018
    Date of Patent: November 16, 2021
    Assignee: OLYMPUS CORPORATION
    Inventors: Tsuyoshi Hayashida, Satomi Sakao
  • Patent number: 11154347
    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: Grant
    Filed: December 29, 2017
    Date of Patent: October 26, 2021
    Assignee: OLYMPUS CORPORATION
    Inventors: Yoshitaka Honda, Tsuyoshi Hayashida, Kazue Tanaka, Sumihito Konishi
  • Publication number: 20210322090
    Abstract: A control device includes: a power source configured to supply a high frequency power to a treatment instrument configured to treat a living tissue; a detecting circuit configured to sequentially detect a phase difference between a voltage and a current of the high frequency power supplied to the treatment instrument; and a processor configured to control operation of the power source, the processor being configured to sequentially calculate a variation of the phase difference detected by the detecting circuit, compare the calculated variation of the phase difference with a first threshold set for a variation of a phase difference, and perform reduction processing to reduce output of the high frequency power to be supplied to the treatment instrument when it is determined that the calculated variation of the phase difference is equal to or smaller than the first threshold.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 21, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Sadayoshi TAKAMI, Tsuyoshi HAYASHIDA, Toshifumi KATSURAGI, Shohei MORIWAKI, Yoshitaka HONDA
  • Patent number: 11141215
    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: Grant
    Filed: February 28, 2018
    Date of Patent: October 12, 2021
    Assignee: OLYMPUS CORPORATION
    Inventors: Tsuyoshi Hayashida, Satomi Sakao, Tatsuro Yamamoto
  • Patent number: 11129671
    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: Grant
    Filed: July 10, 2018
    Date of Patent: September 28, 2021
    Assignee: OLYMPUS CORPORATION
    Inventors: Yoshitaka Honda, Tsuyoshi Hayashida, Danilo Jr. Baring Legaspi
  • Patent number: 11031561
    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: Grant
    Filed: November 16, 2016
    Date of Patent: June 8, 2021
    Assignee: Dyden Corporation
    Inventors: Tsuyoshi Hayashida, Masataka Watanabe, Masanobu Kotsubo, Izumi Maki, Mitsuharu Noto
  • Publication number: 20210038295
    Abstract: A control device includes a processor configured to: execute a sealing control mode in which electrical power to seal a living tissue by heating the living tissue at a first temperature is supplied, and an incision control mode in which electrical power to incise the living tissue by heating the living tissue at a second temperature higher than the first temperature is supplied; calculate elapsed time, as an index value, since it has reached the second temperature by executing the incision control mode; compare the index value and a threshold; determine a residual heat level of an end effector based on a result of comparison between the index value and the threshold; and perform, based on a determination result of the residual heat level, at least one of: notification of information indicating a warning from a notifying unit; and adjustment of electrical power supplied to the end effector.
    Type: Application
    Filed: October 29, 2020
    Publication date: February 11, 2021
    Applicant: OLYMPUS CORPORATION
    Inventors: Toshifumi KATSURAGI, Danilo LEGASPI, Tsuyoshi HAYASHIDA
  • Patent number: 10828087
    Abstract: An electrosurgical instrument connectivity system providing monopolar and bipolar plugs each having a plurality of conductors which allow for use of combination monopolar/bipolar electrosurgical devices with industry standard electrosurgical generator outlets.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: November 10, 2020
    Assignee: Gyrus Acmi, Inc.
    Inventors: Kester J. Batchelor, Richard Curtis, Jyue Boon (Jonas) Lim, Tsuyoshi Hayashida, John Mensch
  • Publication number: 20200330144
    Abstract: A generator includes a control device including a processor, and outputs electrical energy to a treatment instrument. The processor determines whether a treatment target has been heat-denatured prior to receiving an output command, and, based on determination, selects, as an operation state of the treatment instrument, one of a first mode if it is determined that the treatment target has not been heat-denatured and a second mode if it is determined that the treatment target has been heat-denatured. The processor operates the treatment instrument at the selected operation state by controlling the output of the electrical energy to the treatment instrument.
    Type: Application
    Filed: July 2, 2020
    Publication date: October 22, 2020
    Applicant: OLYMPUS CORPORATION
    Inventors: Shohei MORIWAKI, Yoshitaka HONDA, Tsuyoshi HAYASHIDA, Toshifumi KATSURAGI, Kazue TANAKA, Sadayoshi TAKAMI
  • 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