Patents by Inventor Koji Yasunaga
Koji Yasunaga 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).
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Patent number: 7768701Abstract: By adding perspective information in addition to binocular parallax, the invention provides a three-dimensional medical imaging apparatus that allows surgery to be performed with a more natural three-dimensional view, similar to that achieved with the naked eye. The three-dimensional medical imaging apparatus includes an image-acquisition optical system and an imaging device for acquiring three-dimensional images of a subject. The image-acquisition optical system includes an objective optical system for forming an image of the subject at an image-forming plane, and an entrance pupil position of the image-acquisition optical system is disposed between the objective optical system and the subject.Type: GrantFiled: October 9, 2008Date of Patent: August 3, 2010Assignee: Olympus CorporationInventors: Yasushi Namii, Kenji Hirose, Koji Yasunaga
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Publication number: 20090283647Abstract: An apparatus for supporting a medical instrument includes an arm, which has a support portion to support a medical instrument at one end, and an intermediate portion of which is supported by a base portion via a support column. The arm moves the support portion horizontally and vertically. The apparatus also includes a rotary connecting member, which is provided at a second end of the arm and moves to a position corresponding to a position to which the support portion has been moved. The apparatus further includes a counterweight, which is connected to the support column to be immovable in the horizontal directions and movable in the vertical directions, and generates vertically downward force. The rotary connecting member is connected to the counterweight so as to be movable in the horizontal directions relative to the counterweight and movable in the vertical directions together with the counterweight.Type: ApplicationFiled: April 7, 2009Publication date: November 19, 2009Inventors: Koji Yasunaga, Kenji Harano, Noriaki Kanazawa
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Publication number: 20090054765Abstract: By adding perspective information in addition to binocular parallax, the invention provides a three-dimensional medical imaging apparatus that allows surgery to be performed with a more natural three-dimensional view, similar to that achieved with the naked eye. The three-dimensional medical imaging apparatus includes an image-acquisition optical system and an imaging device for acquiring three-dimensional images of a subject. The image-acquisition optical system includes an objective optical system for forming an image of the subject at an image-forming plane, and an entrance pupil position of the image-acquisition optical system is disposed between the objective optical system and the subject.Type: ApplicationFiled: October 9, 2008Publication date: February 26, 2009Inventors: Yasushi Namii, Kenji Hirose, Koji Yasunaga
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Patent number: 7453631Abstract: By adding perspective information in addition to binocular parallax, the invention provides a three-dimensional medical imaging apparatus that allows surgery to be performed with a more natural three-dimensional view, similar to that achieved with the naked eye. The three-dimensional medical imaging apparatus includes an image-acquisition optical system and an imaging device for acquiring three-dimensional images of a subject. The image-acquisition optical system includes an objective optical system for forming an image of the subject at an image-forming plane, and an entrance pupil position of the image-acquisition optical system is disposed between the objective optical system and the subject.Type: GrantFiled: November 29, 2005Date of Patent: November 18, 2008Assignee: Olympus CorporationInventors: Yasushi Namii, Kenji Hirose, Koji Yasunaga
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Publication number: 20070213586Abstract: This endoscope system comprises image pickup means having an image pickup device, illumination light ejecting means having an illumination light ejection portion, an endoscope having an insertion portion and having an illumination light incident portion and an optical image ejection portion for ejecting subject light, a first connection portion for attaching the endoscope to the image pickup means so that the subject light can be captured, a second connection portion for attaching the endoscope to the illumination light ejecting means so that the light from the illumination light ejection portion can enter the illumination light incident portion, an optical path having a first adapter connection portion attachable to the first connection portion and a second adapter connection portion attachable to the second connection portion for capturing the subject image, and an adapter having an illumination optical system for guiding the illumination light to the image pickup region.Type: ApplicationFiled: March 2, 2007Publication date: September 13, 2007Applicant: Olympus Medical Systems Corp.Inventors: Kenji Hirose, Koji Yasunaga, Toshiya Sugai
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Publication number: 20060135866Abstract: By adding perspective information in addition to binocular parallax, the invention provides a three-dimensional medical imaging apparatus that allows surgery to be performed with a more natural three-dimensional view, similar to that achieved with the naked eye. The three-dimensional medical imaging apparatus includes an image-acquisition optical system and an imaging device for acquiring three-dimensional images of a subject. The image-acquisition optical system includes an objective optical system for forming an image of the subject at an image-forming plane, and an entrance pupil position of the image-acquisition optical system is disposed between the objective optical system and the subject.Type: ApplicationFiled: November 29, 2005Publication date: June 22, 2006Inventors: Yasushi Namii, Kenji Hirose, Koji Yasunaga
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Patent number: 6962563Abstract: A surgical apparatus comprises a rigid sheath, an object observation mechanism and an observation optical axis rotating mechanism. The sheath has a distal opening and a proximal opening. The object observation mechanism is inserted into the sheath from the proximal opening. The observation optical axis rotating mechanism rotates the object observation mechanism about the axis of the sheath.Type: GrantFiled: September 17, 2002Date of Patent: November 8, 2005Assignee: Olympus CorporationInventor: Koji Yasunaga
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Publication number: 20040116952Abstract: A surgical instrument can be disinfected or sterilized, and has a rechargeable secondary battery incorporated therein. A distal treatment section of the surgical instrument is ultrasonically oscillated using the secondary battery as a driving power source and used to perform surgery on a living tissue. Electromagnetic energy generated by an energy generation unit located outside the surgical instrument is received by a reception coil incorporated in the surgical instrument with the surgical instrument held in noncontact with the energy generation unit. The electromagnetic energy is then converted into charging power with which the secondary battery is recharged. Thus, the surgical instrument can be readily recharged while left clean.Type: ApplicationFiled: December 3, 2003Publication date: June 17, 2004Applicant: Olympus Optical Co., Ltd.Inventors: Tomohisa Sakurai, Shinji Hatta, Akira Shiga, Tsuyoshi Tsukagoshi, Koji Yasunaga, Masaru Karasawa, Hiroyuki Sangu, Takeaki Nakamura
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Publication number: 20040070822Abstract: Provided is a surgical observational system capable of effectively displaying, in the field of an operating microscope, a real-time image obtained by means of an ultrasonic probe, for example, and a slice image obtained by a preoperative diagnosis on the location of the distal end portion of the probe or a three-dimensional image of an affected region, in association with an actual observational image obtained by means of the microscope. The surgical operation observational system is provided with two monitors in the operating microscope for the observation of the affected region to be operated. Images on the two monitors are alternatively superposed on the optical path of the operating microscope.Type: ApplicationFiled: September 11, 2003Publication date: April 15, 2004Applicant: OLYMPUS OPTICAL CO., LTD.Inventors: Keiji Shioda, Koji Shimomura, Kazuhito Nakanishi, Masakazu Mizoguchi, Masaaki Ueda, Masahiko Kinukawa, Wataru Ohno, Toru Shinmura, Koji Yasunaga, Takashi Fukaya, Masaki Takayama
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Patent number: 6666875Abstract: A surgical instrument can be disinfected or sterilized, and has a rechargeable secondary battery incorporated therein. A distal treatment section of the surgical instrument is ultrasonically oscillated or otherwise activated using the secondary battery as a driving power source to perform surgery on a living tissue. Electromagnetic energy generated by an energy generation unit located outside the surgical instrument is received by a reception coil incorporated in the surgical instrument with the surgical instrument by induction from the energy generation unit. The electromagnetic energy is then converted into charging power with which the secondary battery is recharged. Thus, the surgical instrument can be readily recharged without compromising sterility.Type: GrantFiled: January 27, 2000Date of Patent: December 23, 2003Assignee: Olympus Optical Co., Ltd.Inventors: Tomohisa Sakurai, Shinji Hatta, Akira Shiga, Tsuyoshi Tsukagoshi, Koji Yasunaga, Masaru Karasawa, Hiroyuki Sangu, Takeaki Nakamura
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Patent number: 6661571Abstract: Provided is a surgical observational system capable of effectively displaying, in the field of an operating microscope, a real-time image obtained by means of an ultrasonic probe, for example, and a slice image obtained by a preoperative diagnosis on the location of the distal end portion of the probe or a three-dimensional image of an affected region, in association with an actual observational image obtained by means of the microscope. The surgical operation observational system is provided with two monitors in the operating microscope for the observation of the affected region to be operated. Images on the two monitors are alternatively superposed on the optical path of the operating microscope.Type: GrantFiled: September 18, 2000Date of Patent: December 9, 2003Assignee: Olympus Optical Co., Ltd.Inventors: Keiji Shioda, Kazuhito Nakanishi, Masakazu Mizoguchi, Masahiko Kinukawa, Wataru Ohno, Toru Shinmura, Koji Yasunaga, Takashi Fukaya
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Publication number: 20030055437Abstract: A surgical apparatus comprises a rigid sheath, an object observation mechanism and an observation optical axis rotating mechanism. The sheath has a distal opening and a proximal opening. The object observation mechanism is inserted into the sheath from the proximal opening. The observation optical axis rotating mechanism rotates the object observation mechanism about the axis of the sheath.Type: ApplicationFiled: September 17, 2002Publication date: March 20, 2003Applicant: Olympus Optical Co., Ltd.Inventor: Koji Yasunaga
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Patent number: 6514239Abstract: A medical instrument holding apparatus comprises a support arm supported such that it is rotatable about a first axis of rotation, a first arm supported such that it is rotatable about a second axis of rotation, a second arm supported such that it is rotatable about a third axis of rotation, and a third arm supported such that it is rotatable about a fourth axis of rotation. This apparatus further comprises first, second, third and fourth locks for locking the support arm, the first arm, the second arm and the third arm about the first, second, third and fourth axes of rotation, respectively, and for releasing the locked states of the arms. This apparatus can select control for causing predetermined three of the first, second, third and fourth locks to execute a locking operation, or control for causing all the locks to execute the locking operation.Type: GrantFiled: March 19, 2001Date of Patent: February 4, 2003Assignee: Olympus Optical Co., Ltd.Inventors: Toru Shimmura, Koji Yasunaga, Masaki Takayama
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Patent number: 6494827Abstract: An endoscope apparatus capable of preventing occurrence of problems trouble attributable to exhaustion of a battery has an endoscope and a battery-powered light source. The endoscope has a light guide fiber bundle over which illumination light is propagated. The battery-powered light source is freely detachably attached to the endoscope, and includes an illumination lamp and a battery. The illumination lamp supplies illumination light to the incidence end of the light guide fiber bundle on which illumination light falls. The battery serves as a power supply causing the illumination lamp to light. At least one of the endoscope and battery-powered light source has an indication unit for notifying a user of the amount of electrical energy contained in the battery.Type: GrantFiled: October 27, 1999Date of Patent: December 17, 2002Assignee: Olympus Optical Co., Ltd.Inventors: Kazutaka Matsumoto, Hiroyuki Sangu, Itaru Osaki, Masakazu Gotanda, Seiichi Hosoda, Shinji Hatta, Akira Shiga, Katsushi Watanabe, Koji Yasunaga, Hiroshi Takahashi, Masaru Karasawa, Takeaki Nakamura
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Patent number: 6398721Abstract: A surgical microscope apparatus incorporating a frame portion placed on a floor, a microscope body for stereoscopically observing a portion to be operated, an arm portion supported by the frame portion and arranged to suspend the microscope body, and an endoscope for observing a blind spot for a stereoscopic observation field of view. The frame portion has a light source unit for generating light for illuminating a portion observed with the endoscope and a camera control unit for processing an observed image of an observed portion obtained by the endoscope. A light guide fiber extending from the light source unit to the microscope body and capable of supplying light to the endoscope, and a camera cable for transmitting the image observed with the endoscope to the camera control unit extend in the arm portion. The microscope body is provided with an end of the light guide fiber for connecting the endoscope and a camera head connected to the camera cable.Type: GrantFiled: February 17, 2000Date of Patent: June 4, 2002Assignee: Olympus Optical Co., Ltd.Inventors: Motokazu Nakamura, Masaaki Ueda, Toru Shinmura, Keiji Shioda, Kyo Imagawa, Nobuaki Akui, Shigeyasu Kishioka, Koji Yasunaga, Junichi Nozawa, Takashi Fukaya, Toshiya Sugai, Koji Shimomura, Hitoshi Karasawa, Kazutaka Nakatsuchi, Takeaki Nakamura
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Patent number: 6318864Abstract: A microscope for operation body 1 having an objective lens 4 and eyepieces 5 is combined with a cap that is capable of covering the entire part of the microscope body 1 and which is made of a sterilizable elastic material such as rubber. A retaining portion 7 projecting to retain the cap is provided on the microscope body 1 and a mounting portion engageable with the retaining portion 7 is provided on the cap.Type: GrantFiled: November 14, 1995Date of Patent: November 20, 2001Assignee: Olympus Optical Co., Ltd.Inventors: Takashi Fukaya, Tohru Shinmura, Koji Yasunaga, Kazuo Banju, Masaaki Ueda, Tomonori Ishikawa, Hiroshi Fujiwara, Masanori Kaneda, Junichi Nozawa
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Publication number: 20010027313Abstract: A medical instrument holding apparatus according to the invention comprises a support arm supported such that it is rotatable about a first axis of rotation, a first arm supported such that it is rotatable about a second axis of rotation, a second arm supported such that it is rotatable about a third axis of rotation, and a third arm supported such that it is rotatable about a fourth axis of rotation. This apparatus further comprises first, second, third and fourth locks for locking the support arm, the first arm, the second arm and the third arm about the first, second, third and fourth axes of rotation, respectively, and for releasing the locked states of the arms. This apparatus can select control for causing predetermined three of the first, second, third and fourth locks to execute a locking operation, or control for causing all the locks to execute the locking operation.Type: ApplicationFiled: March 19, 2001Publication date: October 4, 2001Applicant: Olympus Optical Co., Ltd.Inventors: Toru Shimmura, Koji Yasunaga, Masaki Takayama
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Patent number: 5825536Abstract: A surgical microscope unit which is compact and operated lightly at high stability has first and second parallelogrammic linkages, interlocking mechanisms for interlocking the first and second parallelogrammic linkages, a counterweight connected to an arm of the second parallelogrammic linkage, flexible movement transmitting members for transmitting tilting movements of the microscope body around pivot axes directly to a tilting rod as tilting movements around pivot axes at the same ratio, and a movement controlling mechanism for limiting a moving locus of the tilting rod to a corresponding location at which the microscope unit is set. The pivot axes are arranged so that a triangle formed by connecting the pivot axes is similar to a triangle formed by connecting the pivot axes in a plane parallel with a plane including a vertical axis. Auxiliary counterweights are provided on members interlocking with either the first interlocking mechanism or the second interlocking mechanism.Type: GrantFiled: September 8, 1995Date of Patent: October 20, 1998Assignee: Olympus Optical Co., Ltd.Inventors: Koji Yasunaga, Takashi Fukaya
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Patent number: 5805335Abstract: An operating microscope includes a base and a support coupled to the base. An arm has a proximal end portion rotatably and/or vertically movably coupled to the support, and a distal end portion. At least the distal end portion is formed of a non-magnetic material. A microscope portion is coupled to the distal end portion of the arm and includes a stereoscopic optical system for forming an image of an observed part. The microscope portion is formed of a non-magnetic material. The operating microscope also includes a power system for operating the microscope portion or a part thereof, and an operation instructing portion for instructing the power system to operate.Type: GrantFiled: April 14, 1997Date of Patent: September 8, 1998Assignee: Olympus Optical Co., Ltd.Inventors: Takashi Fukaya, Koji Yasunaga, Masahiko Kinukawa, Hiroshi Fujiwara, Yoshia Hoshino, Junichi Nozawa
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Patent number: 5748366Abstract: To provide a surgical microscope comprising a microscope collimator for enabling the operator to easily recognize the swivel center of the microscope body regardless of what position the microscope body moves for easy setting of the swivel center point of the microscope body, a surgical microscope pivotally supporting a microscope body having, an observation optical system with one point on an observation optical axis of the microscope body as the swivel center. The surgical microscope comprises index projectors as swivel center visible indicators being capable of recognizing the swivel center. This configuration enables the operator to easily recognize the swivel center of the microscope body for easy setting of the swivel center point of the microscope body.Type: GrantFiled: December 26, 1995Date of Patent: May 5, 1998Assignee: Olympus Optical Co., Ltd.Inventors: Koji Yasunaga, Hiroshi Fujiwara, Masami Hamada, Takashi Fukaya, Masahiko Kinukawa, Tomonori Ishikawa, Masanori Kaneda, Takeshi Okada