Patents by Inventor Michizo Yamanaka

Michizo Yamanaka 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: 20220079711
    Abstract: A dental treatment tool guiding device (1) is a device for guiding a dental treatment tool (3) to a treatment target position (g) of a tooth (a) to be treated. The dental treatment tool guiding device (1) is provided with a guiding tool (2) that has an inlet port (2a), a hollow portion (2b), and an outlet port (2c) for inserting the dental treatment tool (3) therethrough, and that guides the dental treatment tool (3). The outlet port (2c) is open in a direction different from the introducing direction of the dental treatment tool (3). The hollow portion (2b) extends in a direction from the inlet port (2a) to the tip of the guiding tool (2), and has a tip side curved in the direction of the outlet port (2c).
    Type: Application
    Filed: January 15, 2020
    Publication date: March 17, 2022
    Inventors: Masahiro OTSUKA, Michizo YAMANAKA
  • Publication number: 20200368004
    Abstract: Provided is a lateral branch detection probe whereby the condition of a lateral branch can be detected merely by inserting the lateral branch detection probe to an apex. A lateral branch detection probe detects, after insertion thereof into a root canal of a tooth, the presence/absence of a lateral branch and the position of the lateral branch in the root canal axis direction, the lateral branch detection probe being provided with a plurality of measurement electrodes extending to different positions in the root canal axis direction at predetermined intervals. The measurement electrodes constitute a measurement terminal group in which each measurement electrode is covered with an insulator except for one end portion, and another end portion thereof is connectable to a detection-purpose power supply on a detection device side.
    Type: Application
    Filed: December 21, 2018
    Publication date: November 26, 2020
    Applicants: Toei Electric Co., Ltd., The Yoshida Dental Mfg. Co., Ltd.
    Inventors: Masahiro OTSUKA, Michizo YAMANAKA
  • Patent number: 9930294
    Abstract: A handpiece with a built-camera includes a micromotor-driven handpiece body which includes a cutting tool attached to a head portion thereof, a light receiving port at a position near the cutting tool, a grip portion detachably connected to the handpiece body and a color camera module which is stored inside the handpiece body. The handpiece with the built-in camera further includes an objective lens which faces the light receiving port and a rod fiber which is attached to an inner wall portion of the handpiece body with an incidence end of the rod fiber facing the objective lens and an exit end of the rod fiber facing a condensing lens unit.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: March 27, 2018
    Assignee: The Yoshida Dental Mfg. Co., Ltd.
    Inventors: Takeshi Hasegawa, Michizo Yamanaka
  • Patent number: 9480453
    Abstract: An X-ray imaging device wherein a control section rotates an arcuate movement arm by actuating a turn-driving unit, turns an X-ray source and an X-ray sensor around a subject, and actuates a shifting unit to simultaneously shift the transmission part of the subject, through which an X-ray flux detected by the X-ray sensor passing. Thus provided is an X-ray imaging device in which an X-ray imaging unit having a comparatively narrow detection area can be used to reduce costs, the imaging operation efficiency can be improved, and the vibration of moved members, such as the X-ray imaging unit, can be reduced.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: November 1, 2016
    Assignee: THE YOSHIDA DENTAL MFG. CO., LTD.
    Inventors: Michizo Yamanaka, Terumi Takemoto, Takeshi Tomoe
  • Publication number: 20160183776
    Abstract: The present invention provides a wireless transmission unit for use in a dental instrument with a built-in camera, which is capable of wirelessly transmitting camera images to various destination apparatuses and achieving an improvement in visibility of an affected part while improving operability for a dentist or the like during treatment, and the promotion of patient understanding of the contents of treatment.
    Type: Application
    Filed: August 1, 2014
    Publication date: June 30, 2016
    Inventors: Michizo YAMANAKA, Takeshi HASEGAWA, Terumi TAKEMOTO, Satoru KUMACHI, Hideki MOGI
  • Publication number: 20160174844
    Abstract: [Problem] The present invention provides a dental treatment implement with an anomaly site detection function, capable of accurately detecting an anomaly site on a tooth and gingiva (marginal part) in an oral cavity using an image, accurately treating the site on the basis of the image, and performing MI and PMTC in an efficient and reliable manner.
    Type: Application
    Filed: August 1, 2014
    Publication date: June 23, 2016
    Inventors: Takeshi HASEGAWA, Michizo YAMANAKA
  • Publication number: 20160166138
    Abstract: The present invention provides an image pick-up window defogging function-equipped built-in camera hand piece having a function of treating an affected area and an image observation function of observing the affected area or the like with a camera and capable of defogging the outer surface of an image pick-up window by preventing adhesion of cutting waste and water droplets to the image pick-up window.
    Type: Application
    Filed: August 1, 2014
    Publication date: June 16, 2016
    Applicant: THE YOSHIDA DENTAL MFG. CO., LTD.
    Inventors: Michizo YAMANAKA, Takeshi HASEGAWA
  • Publication number: 20150289833
    Abstract: An X-ray imaging device wherein a control section rotates an arcuate movement arm by actuating a turn-driving unit, turns an X-ray source and an X-ray sensor around a subject, and actuates a shifting unit to simultaneously shift the transmission part of the subject, through which an X-ray flux detected by the X-ray sensor passing. Thus provided is an X-ray imaging device in which an X-ray imaging unit having a comparatively narrow detection area can be used to reduce costs, the imaging operation efficiency can be improved, and the vibration of moved members, such as the X-ray imaging unit, can be reduced.
    Type: Application
    Filed: October 8, 2013
    Publication date: October 15, 2015
    Inventors: Michizo Yamanaka, Terumi Takemoto, Takeshi Tomoe
  • Publication number: 20150222856
    Abstract: A handpiece is provided with a built-in camera which allows a treatment to be performed while viewing a clear color image of a treatment site, which is difficult to be seen normally, such as a distal wall of a tooth.
    Type: Application
    Filed: August 30, 2013
    Publication date: August 6, 2015
    Inventors: Takeshi Hasegawa, Michizo Yamanaka
  • Patent number: 8855262
    Abstract: An X-ray photographing device comprising a turning means for turning an x-ray source and an X-ray sensor around a subject is provided with an arcuate movement means for arcuately moving the X-ray sensor around an arcuate movement center axis, and a control unit. The control unit continuously performs a first photographing step for detecting an X-ray flux while turning the X-ray sensor in a first arcuate movement range around the arcuate movement center axis by the arcuate movement means, a shifting/turning step for shifting/turning an arcuate movement arm around the subject by the turning means, and a shifting/photographing step for detecting the X-ray flux while turning the X-ray sensor in a second arcuate movement range around the arcuate movement center axis by the arcuate movement means in the state shifted from the first arcuate movement range by a very small angle in the shifting/turning step.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: October 7, 2014
    Assignee: The Yoshida Dental Mfg. Co. Ltd.
    Inventors: Terumi Takemoto, Michizo Yamanaka
  • Patent number: 8758010
    Abstract: A dental clinical apparatus having a function which conventional instruments for dental treatment have not had and having a novel constitution. The dental clinical apparatus includes a syringe which has a fluid jetting system for dental treatment and a plasma jet applying means for producing a plasma jet from the end by allowing a low-frequency high-voltage power supply to apply a low-frequency high voltage between electrodes on the outer peripheral surface of a rare gas tube through which a rare gas having a low dielectric breakdown voltage under the atmospheric pressure is flowed, and thereby causing electrical discharge.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: June 24, 2014
    Assignees: Yoshida Creation Inc., Osaka University, Technology Research Institute of Osaka Prefecture
    Inventors: Michizo Yamanaka, Tsuneo Kawahara, Katsuhisa Kitano, Satoshi Ikawa
  • Publication number: 20120093284
    Abstract: An X-ray photographing device (1) comprising a turning means (3) for turning an x-ray source (11) and an X-ray sensor (12) around a subject (K) is provided with an arcuate movement means (4) for arcuately moving the X-ray sensor (12) around an arcuate movement center axis (C2), and a control unit (8). The control unit (8) continuously performs a first photographing step for detecting an X-ray flux (L) while turning the X-ray sensor (12) in a first arcuate movement range (d1) around the arcuate movement center axis (C2) by the arcuate movement means (4), a shifting/turning step for shifting/turning an arcuate movement arm (2) around the subject (K) by the turning means (3), and a shifting/photographing step for detecting the X-ray flux (L) while turning the X-ray sensor (12) in a second arcuate movement range (d2) around the arcuate movement center axis (C2) by the arcuate movement means (4) in the state shifted from the first arcuate movement range (d1) by a very small angle in the shifting/turning step.
    Type: Application
    Filed: June 21, 2010
    Publication date: April 19, 2012
    Inventors: Terumi Takemoto, Michizo Yamanaka
  • Publication number: 20110183284
    Abstract: A dental clinical apparatus having a function which conventional instruments for dental treatment have not had and having a novel constitution. The dental clinical apparatus includes a syringe which has a fluid jetting system for dental treatment and a plasma jet applying means for producing a plasma jet from the end by allowing a low-frequency high-voltage power supply to apply a low-frequency high voltage between electrodes on the outer peripheral surface of a rare gas tube through which a rare gas having a low dielectric breakdown voltage under the atmospheric pressure is flowed, and thereby causing electrical discharge.
    Type: Application
    Filed: July 17, 2009
    Publication date: July 28, 2011
    Inventors: Michizo Yamanaka, Tsuneo Kawahara, Katsuhisa Kitano, Satoshi Ikawa