Patents Assigned to Mitaka Kohki Co., Ltd.
  • Patent number: 10456092
    Abstract: A surgical microscope system includes an infrared thermocamera that directly obtains temperature data on an illuminating spot. If the obtained temperature data indicates a higher temperature than a temperature represented by reference temperature data, an alarm unit generates an alarming sound to notify in advance a risk of overheating so that a counteraction such as stopping an illuminating beam can be taken to surely prevent the overheating of the illuminating spot.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: October 29, 2019
    Assignee: MITAKA KOHKI CO., LTD.
    Inventor: Toshio Yamazaki
  • Patent number: 10295816
    Abstract: A surgical microscope employs a pentaprism beam splitter as a branching unit to branch each beam passed through variable power optical systems into a first beam and a second beam, the first beam being horizontally reflected for an eyepiece unit, the second beam being vertically transmitted for an imaging device. The pentaprism alone is capable of simultaneously conducting reflection to provide an erect image and transmission to provide a photographing image, thereby reducing the number of optical parts in a microscope body of the surgical microscope.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: May 21, 2019
    Assignee: MITAKA KOHKI CO., LTD.
    Inventors: Shinpei Omote, Masakazu Nakamura, Masao Doi
  • Patent number: 10288859
    Abstract: A surgical microscope has an upper face provided with a light beam outlet. An assistant scope is mounted on the light beam outlet, and is rotatable in a horizontal plane so as to direct in any direction in the plane.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: May 14, 2019
    Assignee: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki Nakamura
  • Publication number: 20190125481
    Abstract: A surgical microscope system includes a surgical microscope. When an additional unit is added to the microscope, the center of gravity of the microscope upwardly changes. In this case, an extension of a vertical-slider plate is joined with an upper joint location of a horizontal-slider plate, to raise a vertical slider together with a rotary shaft relative to the microscope, so that a weight balance of the microscope can be established only by sliding the vertical slider within its slidable range.
    Type: Application
    Filed: October 26, 2018
    Publication date: May 2, 2019
    Applicant: MITAKA KOHKI CO., LTD.
    Inventor: Yusuke NAKATA
  • Patent number: 10228530
    Abstract: A stand apparatus for a surgical microscope includes a stand body and a parallel linkage. The parallel linkage is rotatably attached to the stand body by attaching a lower-end joint thereof instead of a vertical intermediate part thereof to the stand body. When the parallel linkage is tilted frontward, no part of the parallel linkage protrudes rearward. Weight balance of the frontward tilted parallel linkage is maintained by, instead of a counterweight, a compression spring arranged along a rear sub-arm.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: March 12, 2019
    Assignee: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki Nakamura
  • Patent number: 10122991
    Abstract: A surgical stereoscopic observation apparatus has a pair of main optical paths A and a pair of secondary optical paths B, an aligning direction of the paths B differing by 90 degrees from that of the paths A. The main and secondary optical paths involve imaging elements D1 and D2, respectively. This apparatus is able to provide not only electronic images oriented for a main operator and an assistant positioned opposite to the main operator but also electronic images orientated for an assistant positioned on the left or right side of the main operator, thereby allowing the main operator and assistants to cooperatively conduct an operation.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: November 6, 2018
    Assignee: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki Nakamura
  • Patent number: 10063850
    Abstract: A surgical stereoscopic observation apparatus defines main optical paths and secondary optical paths that are branched from the main optical paths A and run to a pair of fluorescence imaging elements. The apparatus picks up both visible-light images and fluorescence images, displays the images on an electronic image display unit, and allows an observer to stereoscopically observe the displayed images.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: August 28, 2018
    Assignee: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki Nakamura
  • Publication number: 20180206799
    Abstract: A surgical microscope system includes an infrared thermocamera that directly obtains temperature data on an illuminating spot. If the obtained temperature data indicates a higher temperature than a temperature represented by reference temperature data, an alarm unit generates an alarming sound to notify in advance a risk of overheating so that a counteraction such as stopping an illuminating beam can be taken to surely prevent the overheating of the illuminating spot.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 26, 2018
    Applicant: MITAKA KOHKI CO., LTD.
    Inventor: Toshio YAMAZAKI
  • Publication number: 20180140372
    Abstract: A surgical microscope apparatus has a discharge pump unit that is attached to a rear arm of a parallel linkage mechanism and is exposed to an outside. The discharge pump unit, therefore, is easy to remove from a stand body when repairing or maintaining the same. Namely, the repair or maintenance of the discharge pump unit is easy to carry out. The discharge pump unit is not present inside a horizontal arm, and therefore, never increases the weight of the horizontal arm.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 24, 2018
    Applicant: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki NAKAMURA
  • Publication number: 20180095234
    Abstract: A stand apparatus for a surgical microscope includes a stand body and a parallel linkage. The parallel linkage is rotatably attached to the stand body by attaching a lower-end joint thereof instead of a vertical intermediate part thereof to the stand body. When the parallel linkage is tilted frontward, no part of the parallel linkage protrudes rearward. Weight balance of the frontward tilted parallel linkage is maintained by, instead of a counterweight, a compression spring arranged along a rear sub-arm.
    Type: Application
    Filed: September 27, 2017
    Publication date: April 5, 2018
    Applicant: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki NAKAMURA
  • Publication number: 20180045936
    Abstract: A surgical microscope has an upper face provided with a light beam outlet. An assistant scope is mounted on the light beam outlet, and is rotatable in a horizontal plane so as to direct in any direction in the plane.
    Type: Application
    Filed: August 4, 2017
    Publication date: February 15, 2018
    Applicant: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki NAKAMURA
  • Publication number: 20170351079
    Abstract: A surgical microscope system includes a surgical microscope. In the surgical microscope, variable power optical systems are arranged horizontally to fold optical paths, thereby reducing a vertical size between eyepieces of the surgical microscope and a lower end of the same and expanding a working space under the surgical microscope. A camera is attached to an upper part of the surgical microscope to free a side face of the surgical microscope so that an accessory such as a fluorescent camera is attached to the side face.
    Type: Application
    Filed: May 24, 2017
    Publication date: December 7, 2017
    Applicant: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki NAKAMURA
  • Patent number: 9822922
    Abstract: A medical stand apparatus includes a cylindrical lower arm that accommodates an upper arm divided into sections, so that only the lower arm is visible from the outside and so that a drape can tightly be fastened to the lower arm. The upper arm sections are connected to each other through a shaft that is guided along an arc groove of a bracket. This configuration is beneficial to reduce a diameter of the lower arm when the upper and lower arms are curved.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 21, 2017
    Assignee: MITAKA KOHKI CO., LTD.
    Inventors: Masao Doi, Katsuyuki Nakamura
  • Publication number: 20170293135
    Abstract: An eyepiece structure for a surgical microscope includes an inner barrel, an intermediate barrel, and outer barrels. When the outer barrels are rotated, a protrusion of the inner barrel is guided along a spiral groove of the outer barrel and is moved back and forth along an optical axis. The protrusion is guided through a straight hole of the intermediate barrel that is not rotatable, and therefore, the inner barrel moves along the optical axis without rotating around the optical axis. An astigmatic lens is added to the inner barrel that is nonrotatable, to enable a surgeon suffering from astigmatism to conduct a surgical operation without glasses.
    Type: Application
    Filed: March 24, 2017
    Publication date: October 12, 2017
    Applicant: MITAKA KOHKI CO., LTD.
    Inventors: Shuji INABA, Katsuyuki NAKAMURA, Masao DOI, Kenji OHATA
  • Publication number: 20170293132
    Abstract: A surgical microscope employs a pentaprism beam splitter as a branching unit to branch each beam passed through variable power optical systems into a first beam and a second beam, the first beam being horizontally reflected for an eyepiece unit, the second beam being vertically transmitted for an imaging device. The pentaprism alone is capable of simultaneously conducting reflection to provide an erect image and transmission to provide a photographing image, thereby reducing the number of optical parts in a microscope body of the surgical microscope.
    Type: Application
    Filed: March 30, 2017
    Publication date: October 12, 2017
    Applicant: MITAKA KOHKI CO., LTD.
    Inventors: Shinpei OMOTE, Masakazu NAKAMURA, Masao DOI
  • Patent number: 9746659
    Abstract: A surgical microscope system includes a camera that is rotatable around a first rotation axis and a second rotation axis, the rotation axes being orthogonal to each other, so that a photographing direction of the camera is changeable at a given position. The first rotation axis is inclined with respect to a vertical axis, and therefore, a lower end of a first member is able to be set at a height that does not interfere with the photographing direction when the camera is horizontally oriented.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: August 29, 2017
    Assignee: MITAKA KOHKI CO., LTD.
    Inventors: Masao Doi, Katsuyuki Nakamura
  • Publication number: 20170146780
    Abstract: A surgical stereoscopic observation apparatus includes an objective optical system having an optical axis and emits two focusing beams in parallel with the optical axis toward the objective optical system. If a focal point of the objective optical system agrees with a surgical field, the two focusing beams converge to a single spot on the surgical field, and if disagrees with the surgical field, form two spots on the surgical field. According to the state of the spots, it is possible to quickly determine with naked eye or on a monitor whether or not the focal point is on the surgical field.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 25, 2017
    Applicant: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki NAKAMURA
  • Publication number: 20170048512
    Abstract: A surgical stereoscopic observation apparatus has a pair of main optical paths A and a pair of secondary optical paths B, an aligning direction of the paths B differing by 90 degrees from that of the paths A. The main and secondary optical paths involve imaging elements D1 and D2, respectively. This apparatus is able to provide not only electronic images oriented for a main operator and an assistant positioned opposite to the main operator but also electronic images orientated for an assistant positioned on the left or right side of the main operator, thereby allowing the main operator and assistants to cooperatively conduct an operation.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 16, 2017
    Applicant: MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki NAKAMURA
  • Patent number: 9563045
    Abstract: At a front end of the lateral arm of a surgical microscope apparatus, the apparatus has an intake port. A band is tied around the front end of the lateral arm so that a drape is drawn only to a surgical microscope. Drawing the drape to the surgical microscope results in clearing the field of vision of a surgeon. Part of the drape around the lateral arm and a longitudinal arm is not drawn, to cause no hindrance in operability of the surgical microscope. The lateral arm and the like are hollow to form an inner ventilating path without separately preparing ventilating tubes or the like for ventilation.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: February 7, 2017
    Assignee: MITAKA KOHKI CO., LTD.
    Inventors: Masao Doi, Yusuke Nakata
  • Publication number: 20160381347
    Abstract: A surgical stereoscopic observation apparatus defines main optical paths and secondary optical paths that are branched from the main optical paths A and run to a pair of fluorescence imaging elements. The apparatus picks up both visible-light images and fluorescence images, displays the images on an electronic image display unit, and allows an observer to stereoscopically observe the displayed images.
    Type: Application
    Filed: June 3, 2016
    Publication date: December 29, 2016
    Applicants: MITAKA KOHKI CO., LTD., MITAKA KOHKI CO., LTD.
    Inventor: Katsuyuki NAKAMURA