Patents by Inventor Kenji Tojo

Kenji Tojo 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: 11517384
    Abstract: A surgical system includes a surgical assist robot including a robot main body and a slave controller, and a console. The robot main body has an entry guide, an entry guide support device, and at least one manipulator having an end effector provided at a distal end. The entry guide includes an inner cylinder, an outer cylinder into which the inner cylinder is inserted in an insertion axial direction, and a guide advancing device that displaces the inner cylinder in the insertion axial direction with respect to the outer cylinder. While a position and a posture of the end effector that has advanced from the entry guide are maintained, the inner cylinder is caused to advance toward the end effector within a predetermined movable range along the insertion axial direction with respect to the outer cylinder.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: December 6, 2022
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, MEDICAROID CORPORATION
    Inventors: Tsuyoshi Tojo, Kenji Noguchi, Tetsushi Ito, Tetsuya Nakanishi
  • Patent number: 11504198
    Abstract: A surgical system includes a robot main body, a slave controller, a display device that displays an endoscopic image, and an manipulation input device. The robot main body includes an entry guide having a plurality of guide bores, an entry guide support device that supports the entry guide, an instrument manipulator that has a surgical instrument provided at a distal end and is inserted into the entry guide, and an endoscope manipulator that has an endoscopic camera provided at a distal end and is inserted into the entry guide. The slave controller operates the robot main body such that the surgical instrument advances from an exit of the entry guide after the endoscopic camera advances from the exit of the entry guide and starts capturing in response to input of a body cavity insertion manipulation received by the manipulation input device.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: November 22, 2022
    Assignees: KAWASAKI JUKOGYO KABUSHIKI KAISHA, MEDICAROID CORPORATION
    Inventors: Tsuyoshi Tojo, Kenji Noguchi, Tetsushi Ito, Tetsuya Nakanishi
  • Patent number: 10413744
    Abstract: The purpose of the invention is to provide a transcranial magnetic stimulation system capable of guiding a patient into an optimum posture for treatment. The system 1 of the invention includes an optical device 502 for projecting a light spot 805 to a head of a patient and detecting a reflection light of the light spot; a memory means 71 for memorizing information included in the reflection light detected by the optical device as a reference information when the projected light spot on the patient overlaps a marking (800) provided on the patient; a calculation means 72 for using the reference information memorized in the memory means and a comparison information included in the reflection light of the light spot to calculate an overlap ratio between the marking and the light spot corresponding to the comparison information; and a display means 504 for displaying the overlap ratio.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: September 17, 2019
    Assignee: Teijin Pharma Limited
    Inventors: Atsushi Asahina, Kenji Tojo, Rei Tamiya
  • Patent number: 10004915
    Abstract: A compact and economical transcranial magnetic stimulation system is provided which allows patient to carry out transcranial magnetic stimulation therapy routinely and repeatedly in, for example, his or her house or a neighborhood primary-care medical facility. The system (1) has a magnetic field generating means for generating a magnetic field to be used for providing magnetic stimulation to a specific part of the patient's head. The magnetic field generating means has a magnetic coil (2) for generating a variable magnetic field, a holder (10) for holding the magnetic coil (2), cameras (150a) and another for recognizing respective reference markings (24) or specific portions of ears of the patient M (tragi (24)), and laser beam oscillators (160a) and another. According to the system, the coil (2) is set in a proper posture with respect to the specific part of the patient by aligning the optical axes of the cameras (150a) and other and the laser beam oscillators (160a) and other with respective tragi (24).
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: June 26, 2018
    Assignees: Teijin Pharma Limited, OSAKA UNIVERSITY
    Inventors: Youichi Saitoh, Kenji Tojo, Atsushi Asahina
  • Publication number: 20170296838
    Abstract: The purpose of the invention is to provide a transcranial magnetic stimulation system capable of guiding a patient into an optimum posture for treatment. The system 1 of the invention includes an optical device 502 for projecting a light spot 805 to a head of a patient and detecting a reflection light of the light spot; a memory means 71 for memorizing information included in the reflection light detected by the optical device as a reference information when the projected light spot on the patient overlaps a marking (800) provided on the patient; a calculation means 72 for using the reference information memorized in the memory means and a comparison information included in the reflection light of the light spot to calculate an overlap ratio between the marking and the light spot corresponding to the comparison information; and a display means 504 for displaying the overlap ratio.
    Type: Application
    Filed: August 31, 2015
    Publication date: October 19, 2017
    Applicant: Teijin Pharma Limited
    Inventors: Atsushi ASAHINA, Kenji TOJO, Rei TAMIYA
  • Patent number: 9682249
    Abstract: A compact and economical transcranial magnetic stimulation system has a magnetic field generator for generating a magnetic field to be used for providing magnetic stimulation to the head of patient. The generator has a magnetic coil for generating a variable magnetic field and a holder for holding the magnetic coil. The holder has positioning portions for positioning the holder against respective markings on the head of patient. The coil is placed into a suitable posture against certain position by aligning the positioning portions with the markings on the head of patient.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: June 20, 2017
    Assignee: Teijin Pharma Limited
    Inventors: Kenji Tojo, Atsushi Asahina
  • Publication number: 20160015588
    Abstract: Provided is an inexpensive device capable of accurately positioning a medical instrument relative to the head of a user. A head positioning device (7) is used. The head positioning device (7) is provided with: a pair of holding members (11, 12) which holds the face of a user from both sides by elasticity and prevents both the forward tilting of the user's head and the rotation of the neck; a neck rest (13) which comes into contact with the back side of the user's neck and determines the position of the neck in the front-rear direction; and a head-back rest (14) which comes into contact with the back of the head and which prevents the head from tilting backward.
    Type: Application
    Filed: March 28, 2014
    Publication date: January 21, 2016
    Applicant: Teijin Pharma Limited
    Inventors: Rei TAMIYA, Takamitsu OKAYAMA, Kenji TOJO, Jun MATSUI
  • Patent number: 9239053
    Abstract: In the hermetically sealed scroll compressor, an injection pipe for injecting a fluid to a compression chamber is connected to an injecting port of a fixed scroll. The injecting port includes a first injecting port which is provided in the vicinity of a fixed scroll inner curve and injects the fluid to an orbiting outer compression chamber, and a second injecting port 22b which is provided in the vicinity of a fixed scroll outer curve and injects the fluid to a orbiting inner compression chamber 8b. The second injecting port is placed in parallel in a radius direction with respect to the first injecting port and is placed so that an orbiting scroll wrap does not practically communicate with the orbiting outer compression chamber in the state in which the orbiting scroll wrap is in contact with the outer side of a fixed scroll wrap.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: January 19, 2016
    Assignee: HITACHI APPLIANCES, INC.
    Inventors: Masao Shiibayashi, Kenji Tojo, Yasushi Izunaga
  • Publication number: 20150038768
    Abstract: A transcranial magnetic stimulation system has a magnetic field generating means for generating a variable magnetic field to be used for providing magnetic stimulation to a specific part of the patient's head. The system also has a holder for holding a magnetic coil of the magnetic field generating means, cameras for recognizing respective reference markings or specific portions of ears of the patient (tragi), and laser beam oscillators. According to the system, the coil is set in a proper posture with respect to the specific part of the patient by aligning the optical axes of the cameras and the laser beam oscillators with respective tragi.
    Type: Application
    Filed: October 24, 2012
    Publication date: February 5, 2015
    Applicants: OSAKA UNIVERSITY, TEIJIN PHARMA LIMITED
    Inventors: Youichi Saitoh, Kenji Tojo, Atsushi Asahina
  • Publication number: 20140343351
    Abstract: A compact and economical transcranial magnetic stimulation system has a magnetic field generator for generating a magnetic field to be used for providing magnetic stimulation to the head of patient. The generator has a magnetic coil for generating a variable magnetic field and a holder for holding the magnetic coil. The holder has positioning portions for positioning the holder against respective markings on the head of patient. The coil is placed into a suitable posture against certain position by aligning the positioning portions with the markings on the head of patient.
    Type: Application
    Filed: October 24, 2012
    Publication date: November 20, 2014
    Applicant: TEIJIN PHARMA LIMITED
    Inventors: Kenji Tojo, Atsushi Asahina
  • Patent number: 8435014
    Abstract: In the hermetically sealed scroll compressor, an injection pipe for injecting a fluid to a compression chamber is connected to an injecting port of a fixed scroll. The injecting port includes a first injecting port which is provided in the vicinity of a fixed scroll inner curve and injects the fluid to an orbiting outer compression chamber, and a second injecting port 22b which is provided in the vicinity of a fixed scroll outer curve and injects the fluid to a orbiting inner compression chamber 8b. The second injecting port is placed in parallel in a radius direction with respect to the first injecting port and is placed so that an orbiting scroll wrap does not practically communicate with the orbiting outer compression chamber in the state in which the orbiting scroll wrap is in contact with the outer side of a fixed scroll wrap.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: May 7, 2013
    Assignee: Hitachi Appliances, Inc.
    Inventors: Masao Shiibayashi, Kenji Tojo, Yasushi Izunaga
  • Patent number: 8241021
    Abstract: In order to make a displacement type compressor be able to reliably start without increasing an outside diameter dimension of the compressor while using a self-start synchronous motor having high energy efficiency, the displacement type compressor according to the invention includes the self-start synchronous motor which starts as an induction-motor and performs synchronous operation by performing synchronization pull-in almost at a synchronous rotational frequency, a compression part having a compression chamber which compresses a working fluid, and a hermetic container which houses the self-start synchronous motor and the compression part. The displacement type compressor is provided with a start load reducing means which reduces a load of the compression part at startup and is placed at the compression part in the hermetic container.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: August 14, 2012
    Assignee: Hitachi Appliances, Inc.
    Inventors: Takeshi Tsuchiya, Yuuichi Yanagase, Kazuyuki Fujimura, Mutsunori Matsunaga, Shigekazu Nozawa, Kenji Tojo, Haruo Koharagi, Satoshi Kikuchi, Hirokatsu Kohsokabe
  • Publication number: 20120156068
    Abstract: In the hermetically sealed scroll compressor, an injection pipe for injecting a fluid to a compression chamber is connected to an injecting port of a fixed scroll. The injecting port includes a first injecting port which is provided in the vicinity of a fixed scroll inner curve and injects the fluid to an orbiting outer compression chamber, and a second injecting port 22b which is provided in the vicinity of a fixed scroll outer curve and injects the fluid to a orbiting inner compression chamber 8b. The second injecting port is placed in parallel in a radius direction with respect to the first injecting port and is placed so that an orbiting scroll wrap does not practically communicate with the orbiting outer compression chamber in the state in which the orbiting scroll wrap is in contact with the outer side of a fixed scroll wrap.
    Type: Application
    Filed: February 28, 2012
    Publication date: June 21, 2012
    Inventors: Masao Shiibayashi, Kenji Tojo, Yasushi Izunaga
  • Patent number: 7902713
    Abstract: A self-starting type permanent magnet synchronous motor comprises a stator and a rotor. The rotor comprises a rotor core having a plurality of slots provided in an outer periphery thereof and a cage winding comprising conductive bars embedded in the slots and conductive end rings that short-circuit the conductive bars on both end faces of the bars in an axial direction thereof. The rotor core comprises at least one magnet insertion hole arranged on an inner peripheral side from the slots, and at least one permanent magnet embedded in the at least one magnet insertion hole. When a pole center axis is denoted as a d-axis and an axis deviating from the pole center axis by an electrical angle 90° is denoted as a q-axis, a flux content generated by the cage winding during start-up becomes maximal in the vicinity of and on one of the d-axis and the q-axis.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: March 8, 2011
    Assignee: Hitachi Appliances, Inc.
    Inventors: Satoshi Kikuchi, Hiroyuki Mikami, Akeshi Takahashi, Tomio Yoshikawa, Keiji Tanaka, Masashi Miyake, Baiying Huang, Masaru Ohtahara, Kenji Tojo, Hideyuki Kumakura
  • Publication number: 20110020161
    Abstract: In order to make a displacement type compressor be able to reliably start without increasing an outside diameter dimension of the compressor while using a self-start synchronous motor having high energy efficiency, the displacement type compressor according to the invention includes the self-start synchronous motor which starts as an induction-motor and performs synchronous operation by performing synchronization pull-in almost at a synchronous rotational frequency, a compression part having a compression chamber which compresses a working fluid, and a hermetic container which houses the self-start synchronous motor and the compression part. The displacement type compressor is provided with a start load reducing means which reduces a load of the compression part at startup and is placed at the compression part in the hermetic container.
    Type: Application
    Filed: October 4, 2010
    Publication date: January 27, 2011
    Applicant: Hitachi Appliances, Inc.
    Inventors: Takeshi TSUCHIYA, Yuuichi Yanagase, Kazuyuki Fujimura, Mutsunori Matsunaga, Shigekazu Nozawa, Kenji Tojo, Haruo Koharagi, Satoshi Kikuchi, Hirokatsu Kohsokabe
  • Patent number: 7824160
    Abstract: A scroll back pressure chamber in a scroll compressor is composed of a space 111 filled with suction pressure (or intermediate pressure) and a space filled with discharge pressure, and the summation of the suction pressure (or the intermediate pressure) and the discharge pressure presses one of scrolls against the other of the scrolls. An injection hole, through which refrigerant in gas state or refrigerant in liquid state is injected into a compression chamber of the scroll compressor, is provided on a fixed scroll, and the gas refrigerant injection or the liquid refrigerant injection is selected and carried out according to an operating pressure ratio.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: November 2, 2010
    Assignee: Hitachi Appliances, Inc.
    Inventors: Satoshi Nakamura, Mutsunori Matsunaga, Shuji Hasegawa, Kenji Tojo
  • Publication number: 20100247366
    Abstract: In order to obtain a screw compressor which is small in size and weight and has ease of maintenance and high reliability, the screw compressor comprises a screw rotor, a low-pressure-side bearing and a high-pressure-side bearing which support the screw rotor, a motor which drives the screw rotor, a motor casing which accommodates the motor, a main casing which accommodates the screw rotor and the low-pressure-side bearing, and a discharge casing which accommodates the high-pressure-side bearing. The motor casing, the main casing, and the discharge casing are accommodated in a steel pipe chamber, and the steel pipe chamber includes a low-pressure-side chamber and a high-pressure-side chamber which are able to be divided in the axial direction. By using a flange provided on an inner surface of the steel pipe chamber, a flange provided in the main casing, and a sealing component provided between the flanges, the steel pipe chamber is divided into a low-pressure-side space and a high-pressure-side space.
    Type: Application
    Filed: February 18, 2010
    Publication date: September 30, 2010
    Inventors: Eisuke KATO, Masayuki Urashin, Ryuichiro Yonemoto, Shinichiro Yamada, Kenji Tojo
  • Patent number: 7758326
    Abstract: A scroll fluid machine comprises compression chambers defined with an orbiting scroll orbiting relative to a fixed scroll, and a back pressure chamber provided on the face opposite from a wrap of the orbiting scroll. A back pressure port is provided, which is formed in an end-plate of the orbiting scroll and connects from a compression chamber side opening opened to a compression chamber side and to a back pressure chamber side opening opened to a back pressure chamber side. The compression chamber side opening is opened and closed by an end-plate of the fixed scroll according as the orbiting motion of the orbiting scroll to perform connection and blockage of the back pressure port. The flow resistance of fluid flowing in and out between the back pressure chamber and the compression chamber is reduced and the compression efficiency and reliability are improved.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: July 20, 2010
    Assignee: Hitachi Appliances, Inc.
    Inventors: Kazuyuki Fujimura, Takeshi Tsuchiya, Yuichi Yanagase, Makoto Aoki, Masashi Miyake, Mutsunori Matsunaga, Satoshi Nakamura, Masaru Ohtahara, Syuuji Hasegawa, Hiroyuki Imamura, Yoshinobu Yosuke, Kenji Tojo
  • Publication number: 20100129240
    Abstract: In the hermetically sealed scroll compressor, an injection pipe for injecting a fluid to a compression chamber is connected to an injecting port of a fixed scroll. The injecting port includes a first injecting port which is provided in the vicinity of a fixed scroll inner curve and injects the fluid to an orbiting outer compression chamber, and a second injecting port 22b which is provided in the vicinity of a fixed scroll outer curve and injects the fluid to a orbiting inner compression chamber 8b. The second injecting port is placed in parallel in a radius direction with respect to the first injecting port and is placed so that an orbiting scroll wrap does not practically communicate with the orbiting outer compression chamber in the state in which the orbiting scroll wrap is in contact with the outer side of a fixed scroll wrap.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 27, 2010
    Inventors: Masao Shiibayashi, Kenji Tojo, Yasushi Izunaga
  • Publication number: 20100111741
    Abstract: A scroll compressor comprises a fixed scroll, an orbiting scroll engaged with the fixed scroll to form a compression chamber therebetween, a back pressure chamber arranged at a back side of an end plate of the orbiting scroll, a back pressure hole formed in the end plate of the orbiting scroll to form a fluidal communication between the compression chamber and the back pressure chamber, and a release valve mechanism for discharging the fluid from the compression chamber to the discharge space when a pressure in the compression chamber is higher than the pressure in the discharge space, wherein the back pressure hole and the release flow path are arranged to prevent both of the fluidal communication and the another fluidal communication from being formed simultaneously.
    Type: Application
    Filed: October 30, 2009
    Publication date: May 6, 2010
    Inventors: Masatsugu CHIKANO, Kenji Tojo, Mutsunori Matsunaga, Satoshi Nakamura