Patents by Inventor Akio Nakada
Akio Nakada 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: 5372124Abstract: A treating instrument for medical treatment, comprises an insertion section to be inserted into a body cavity of a patient, biopsying forceps provided at a distal end of the insertion section, a pair of cups provided at the forceps, a grip member connected to an operator-end side of the insertion section; a drive unit provided on the distal end of the insertion section and generating a drive force for the cups, a conduction circuit for carrying electric current through the drive unit, and an operation switch interposed at lead wires of the conduction circuit.Type: GrantFiled: April 7, 1992Date of Patent: December 13, 1994Assignee: Olympus Optical Co., Ltd.Inventors: Shuichi Takayama, Akio Nakada, Yasukazu Tatsumi, Takeaki Nakamura, Tatsuya Yamaguchi, Yasuhiro Ueda, Hideyuki Adachi, Masakazu Gotanda, Koji Fujio, Katsunori Sakiyama, Masaaki Hayashi
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Patent number: 5342394Abstract: An apparatus for blocking a vein branch is provided with an outer tube having a tubular passage opened at its distal and proximal ends and a bent distal end portion, an inner tube slidably inserted in the outer tube so as to be projected and retracted from the opening formed in the distal end portion of the outer tube and having a storing portion filled with a vein-branch blocking member, and a push-out member for pushing out the blocking member in the vein branch.Type: GrantFiled: November 20, 1992Date of Patent: August 30, 1994Assignee: Olympus Optical Co., Ltd.Inventors: Kiyotaka Matsuno, Masahiro Kawashima, Akio Nakada
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Patent number: 5301061Abstract: The endoscope system of this invention is formed of an endoscope having an insertable part provided in the tip part with an illuminating window and a receiving window receiving an object image illuminated by an illuminating light emitted from the illuminating window and a plurality of sheaths selectively and removably connected to the endoscope, inserted through the insertable part when connected to the endoscope and having respectively different functions.Type: GrantFiled: March 7, 1990Date of Patent: April 5, 1994Assignee: Olympus Optical Co., Ltd.Inventors: Akio Nakada, Peter G. Lorenz, Minoru Okada, Nobuyuki Sakamoto, Yoshikazu Tohjoh, Katsunori Sakiyama
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Patent number: 5047043Abstract: A medical resecting device is disclosed in which, a living organism tissue is resected with ultrasonic vibrations while the corresponding body cavity is observed with an optical observation pipe. The resecting device includes an ultrasonic vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a probe connected to the front portion of the horn to transmit the ultrasonic vibrations generated by the vibrator, the probe being provided with a rod-like shaft and a distal end portion with a resecting blade, a power source unit for supplying a drive voltage to the vibrator, and an optical observation pipe having a guide hole in which the shaft of the probe is inserted.Type: GrantFiled: December 7, 1989Date of Patent: September 10, 1991Assignee: Olympus Optical Co., Ltd.Inventors: Tetsumaru Kubota, Tatsuo Nagasaki, Koji Taguchi, Hiroyoshi Fujimori, Akio Nakada, Syuichi Takayama, Daisaku Negoro, Toshiki Terayama, Hiroyuki Kusunoki, Shinji Hatta, Hitoshi Karasawa, Masaaki Hayashi, Tadao Hagino, Akihiro Taguchi
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Patent number: 4989588Abstract: A medical treatment device for resecting, e.g., a prostate or breaking a bladder stone, which includes a vibrator for generating ultrasonic vibrations, a horn connected to the vibrator, a casing for accommodating the vibrator and the horn, a probe connected to the front portion of the horn to transmit ultrasonic vibrations generated by the vibrator, and a power source unit for supplying a drive voltage to the vibrator, the power source unit having an oscillator for producing a wave having a frequency for vibrating the probe and a frequency switching circuit for selecting an oscillating frequency at which the distal end of the probe serves as a loop of vibration or a frequency at which the distal end of the probe serves as a node of vibration.Type: GrantFiled: February 27, 1987Date of Patent: February 5, 1991Assignee: Olympus Optical Co., Ltd.Inventors: Tetsumaru Kubota, Akira Shiga, Akio Nakada, Syuichi Takayama, Ryouichi Konou, Yasuhiro Ueda, Hitoshi Karasawa, Tatsuo Nagasaki, Koji Taguchi, Hiroyoshi Fujimori, Shinichi Imade, Shinji Hatta, Yutaka Ohshima, Hiroyuki Kusunoki, Toshiki Terayama, Masaaki Hayashi, Tadao Hagino, Akihiro Taguchi
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Patent number: 4958639Abstract: An ultrasonic therapeutical apparatus observes the interior of a living body utilizing an ultrasonic wave, allows a location signal to be generated on the basis of an output from the observation system, and controls a focus shifting system in accordance with the location signal. Subsequently, a shock wave generating system is driven to generate an ultrasonic shock wave, which is directed to a focal point, thereby crushing a calculus.Type: GrantFiled: November 8, 1989Date of Patent: September 25, 1990Assignee: Olympus Optical Co., Ltd.Inventors: Naoki Uchiyama, Akio Nakada, Akihiro Taguchi, Shinji Hatta, Syuichi Takayama, Takashi Tsukaya, Sakae Takehana, Naomi Sekino, Masaaki Hayashi
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Patent number: 4920413Abstract: A blood-vessel endoscope system has an endoscope to be inserted into a blood vessel in a living body and a frozen-picture memorizing device connected to the endoscope, and is capable of storing a frozen picture when a release switch is actuated. The system is provided with a frozen-picture memorization controlling device so that a frozen picture free from a large blur may be stored in synchronization with the signal output from a heart pulsation measuring device for measuring the heart pulsation of the living body and at the timing that the action of a myocardium is reduced.Type: GrantFiled: February 28, 1989Date of Patent: April 24, 1990Assignee: Olympus Optical Co., Ltd.Inventors: Ichiro Nakamura, Naruto Shinkai, David Barlow, Akio Nakada
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Patent number: 4872458Abstract: Thermotherapy apparatus used for performing a thermotherapy for a diseased part of a tumor such as a cancer of a living body. A heating portion is arranged in a distal end portion at the body cavity side of a probe which can be inserted in the body cavity through an endoscope or the like or a distal end portion at the body cavity side of an insertion portion of the endoscope. The heating portion has a far-infrared radiation ceramic member, and a heater for heating the far-infrared radiation ceramic member.Type: GrantFiled: September 8, 1987Date of Patent: October 10, 1989Assignee: Olympus Optical Co., Ltd.Inventors: Katsuyuki Kanehira, Syuichi Takayama, Atsushi Amano, Hiroki Hibino, Naoki Uchiyama, Akio Nakada
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Patent number: 4867141Abstract: A medical treatment apparatus utilizing ultrasonic waves according to this invention is applied to treatments such as breaking up a stone formed in a living body. The medical treatment apparatus utilizing ultrasonic waves includes a vibration generator (10) for generating ultrasonic vibrations and a vibration transmission member (16) for transmitting the ultrasonic vibrations generated by the vibration generator (10). The vibration transmission member (16) has a front end portion and a proximal end portion which is mounted on the vibration generator (10). The medical treatment apparatus further includes a cover member (20) for surrounding the outer surface of the vibration transmission member (16) and an exposing member (21) for exposing the distal end portion of the vibration transmission member (16) outside the cover member (20).Type: GrantFiled: June 12, 1987Date of Patent: September 19, 1989Assignee: Olympus Optical Co., Ltd.Inventors: Akio Nakada, Syuichi Takayama, Tatsuya Kubota, Tetsumaru Kubota, Koji Taguchi, Shinichi Imade, Naomi Sekino
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Patent number: 4648399Abstract: A resectoscope includes an electrode which is effective to resect an affected part by cauterization upon energization with high frequency current. A slider element is slidable lengthwise of the resectoscope and includes an electrode receiving hole in which an electrical terminal is mounted. The proximal end of the electrode is inserted into the hole and secured to the terminal. Thus the electrode is fixed to the slider and can be moved back and forth with respect to the resectoscope's body. An elastic seal member having an internal diameter less than the external diameter of an insulation coat on the electrode is located in the opening into the hole to prevent water droplets or blood from entering into the hole.Type: GrantFiled: December 24, 1984Date of Patent: March 10, 1987Assignee: Olympus Optical Co., Ltd.Inventor: Akio Nakada
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Patent number: 4633882Abstract: A device for diagnosing body cavity interiors which comprises an elongated insertion portion for introduction into a body cavity. The insertion portion includes a guide tube extending along the length thereof with a window formed in the insertion portion at the end of the guide tube. An ultrasonic wave probe is positioned at the forward end of the insertion portion, the ultrasonic head transmitting ultrasonic waves to body tissue and receiving ultrasonic waves reflected from the body tissue. A curved portion is formed in the insertion portion at a position adjacent to the ultrasonic head. A optical tube is inserted into the guide tube wherein the forward end of the optical tube is positioned in the window of the insertion portion, such that the body tissue may be observed through the optical tube. Further, an optical tube fitting member is coupled to the rear of the insertion portion with the optical tube being inserted into the insertion portion through the fitting member.Type: GrantFiled: September 23, 1985Date of Patent: January 6, 1987Assignee: Olympus Optical Co., Ltd.Inventors: Kazumasa Matsuo, Akio Nakada
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Patent number: 4558706Abstract: A device for diagnosing body cavity interiors with ultrasonic waves consisting of an ultrasonic wave transmitter and receiver in a housing chamber filled with a wave transmitting fluid and coated with a jacket cover and connected to the end of a flexible tube for insertion into a body cavity, the flexible tube having a light source for illuminating a portion of a body cavity, a light guide for viewing the illuminated cavity portion and a cable for transmitting energy to and receiving readings from the wave transmitter and receiver, the wave transmitter and receiver including an ultrasonic wave mirror having a reflection surface for transmitting and receiving ultrasonic waves and a recess in a surface of the mirror at the rear of the reflection surface for collecting gas bubbles generated in the transmitting fluid, a conduit from the housing chamber to the outside of the chamber for filling the chamber with fluid, a removable closure for the conduit, the conduit and closure being within the jacket cover and noType: GrantFiled: March 7, 1983Date of Patent: December 17, 1985Assignee: Olympus Optical Co., Ltd.Inventors: Akio Nakada, Kazumasa Matsuo
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Patent number: 4489727Abstract: There is disclosed a device for diagnosing a body cavity interior with supersonic waves which is to be inserted into a body cavity wherein the tip of a supersonic wave probe is in direct contact with an internal organ within the body cavity. An endoscope and supersonic probe are arranged to make it possible to diagnose the internal organ with supersonic waves while the supersonic wave probe tip is being observed.Type: GrantFiled: March 16, 1982Date of Patent: December 25, 1984Assignee: Olympus Optical Co., Ltd.Inventors: Kazumasa Matsuo, Akio Nakada
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Patent number: 4489728Abstract: A device for diagnosing a body cavity interior with supersonic waves is disclosed wherein a supersonic wave tip is inserted into a body cavity to transmit and receive supersonic waves to diagnose internal organs with the supersonic waves and an endoscope to observe the body cavity interior are combined with each other. In such diagnosing device there is provided, a driving means for driving a supersonic wave oscillator or scanning mirror provided within a supersonic probe tip. A grip which is small and light and angled in the forward direction is provided. The disposition of the driving shaft, signal cord and light guide cables are such that they do not obstruct the operation of the diagnosing device.Type: GrantFiled: March 16, 1982Date of Patent: December 25, 1984Assignee: Olympus Optical Co., Ltd.Inventors: Kazumasa Matsuo, Akio Nakada