Patents by Inventor Kensei Nakahashi
Kensei Nakahashi 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: 8540621Abstract: A medical retainer is provided capable of independently controlling supplying air and water to a hollow organ like a stomach and a lumen of a small intestine. The medical retainer for sealing a fluid, the retainer being subject to be retained in a gastrointestinal tract of a patient, the medical retainer includes: a sealing section for sealing the fluid, the sealing section making contact with a wall of the gastrointestinal tract; a main body having passageways; and directional valves disposed in the passageways for allowing one of upward flow and downward flow of the fluid relative to the position of the retainer.Type: GrantFiled: January 12, 2007Date of Patent: September 24, 2013Assignee: Olympus Medical Systems Corp.Inventors: David E. Barlow, Takayasu Mikkaichi, Kensei Nakahashi, Hironobu Kawano, Kunihide Kaji
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Patent number: 8475361Abstract: A medical procedure and a system are provided so that two visions are obtainable through natural orifices by means of two observational apparatuses, or one the two visions is selectable. The medical procedure through a natural orifice comprises: forming an orifice in a hollow organ by using a device inserted into the hollow organ from a natural orifice of a patient; introducing a first observation device from said orifice formed in said hollow organ into an abdominal cavity; introducing a second observation device from said orifice formed in said hollow organ into the abdominal cavity; arranging said second observation device in a position different from that of said first observation device; simultaneously or selectively displaying an image obtained from said first observation device and an image obtained from said second observation device; and performing a desired procedure in the abdominal cavity while confirming the images.Type: GrantFiled: January 5, 2007Date of Patent: July 2, 2013Assignee: Olympus Medical Systems Corp.Inventors: David E Barlow, Takayasu Mikkaichi, Kensei Nakahashi
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Patent number: 8225794Abstract: An over-tube of the present invention is an over-tube which guides a device having an insertion section to be inserted into a body of a patient, when inserting the insertion section into or retracting the insertion section from the body of the patient, wherein: a gas-supplying passage is defined between an inner face of the over-tube and the device to be inserted into the over-tube; the gas-supplying passage communicates with a gas-supplying port which is provided on a proximal end side of the over-tube, and a communicating port which is formed on an over-tube insertion section and supplies a gas into a trachea of the patient; and a first sealing member which secures an air passage for communicating the gas-supplying passage and the trachea of the patient via the communicating rod by sealing between a body wall of the patient and the communicating port, is provided on a periphery of an over-tube insertion section.Type: GrantFiled: January 13, 2006Date of Patent: July 24, 2012Assignee: Olympus Medical Systems Corp.Inventors: Takayasu Mikkaichi, Kensei Nakahashi, Kiyotaka Matsuno, Kunihide Kaji
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Patent number: 8002695Abstract: The medical procedure via a natural opening according to the present invention includes: adjusting the patient's body so that a target site on the anterior wall of a hollow organ faces in the direction opposite to the direction of gravitational force; introducing a liquid inflow conduit in the vicinity of the target site, and flowing liquid into the hollow organ via the liquid inflow conduit, to form a liquid holding area and a gas retaining area inside the hollow organ; introducing an observation device into the hollow organ, and confirming the position of the target site from the position of the gas retaining area; and incising while observation the target area.Type: GrantFiled: January 13, 2006Date of Patent: August 23, 2011Assignee: Olympus Medical Systems Corp.Inventors: Takayasu Mikkaichi, Kensei Nakahashi, Kunihide Kaji, Hironobu Kawano
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Patent number: 7988618Abstract: The medical procedure via a natural opening according to the present invention includes: disposing a target on the body surface near a target site on the inner wall of a hollow organ; introducing a guide member into the hollow organ via a natural natural opening, guiding the guide member to the target site using the target, and confirming the target site by means of a observation device; and carrying out a procedure at the target site while observing the target site.Type: GrantFiled: January 11, 2006Date of Patent: August 2, 2011Assignee: Olympus Medical Systems CorpInventors: Takayasu Mikkaichi, Kensei Nakahashi
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Patent number: 7735489Abstract: An endotracheal tube according to the present invention is used by being installed into a patient so as to use it together with a device having an insertion section which is inserted into the body. A portion overlapping with the device inserted into the patient is formed as a flat shape; and furthermore, an outer face portion formed along a longitudinal direction of a cross-section, of the portion formed in the flat shape contacts the device.Type: GrantFiled: January 13, 2006Date of Patent: June 15, 2010Assignee: Olympus Medical Systems Corp.Inventors: Takayasu Mikkaichi, Takahiro Kogasaka, Tetsuya Yamamoto, Kensei Nakahashi, Hironobu Kawano
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Publication number: 20070265600Abstract: A medical retainer is provided capable of independently controlling supplying air and water to a hollow organ like a stomach and a lumen of a small intestine. The medical retainer for sealing a fluid, the retainer being subject to be retained in a gastrointestinal tract of a patient, the medical retainer includes: a sealing section for sealing the fluid, the sealing section making contact with a wall of the gastrointestinal tract; a main body having passageways; and directional valves disposed in the passageways for allowing one of upward flow and downward flow of the fluid relative to the position of the retainer.Type: ApplicationFiled: January 12, 2007Publication date: November 15, 2007Applicant: Olympus Medical Systems CorporationInventors: David Barlow, Takayasu Mikkaichi, Kensei Nakahashi, Hironobu Kawano, Kunihide Kaji
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Publication number: 20070260214Abstract: A medical procedure through a natural body orifice according to the present invention includes: introducing a first device having an insertion portion, from a patient's natural orifice into a hollow organ; performing a first medical procedure using the first device; withdrawing the first device from the body, and introducing a second device having an insertion portion, from a patient's natural orifice into the body; and performing a second medical procedure using the second device, wherein the first medical procedure is performed prior to the second medical procedure for performing the second medical procedure.Type: ApplicationFiled: January 13, 2006Publication date: November 8, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Takayasu Mikkaichi, Tetsuya Yamamoto, Kunihide Kaji, Kensei Nakahashi
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Publication number: 20070255100Abstract: A medical procedure and a system are provided so that two visions are obtainable through natural orifices by means of two observational apparatuses, or one the two visions is selectable. The medical procedure through a natural orifice comprises: forming an orifice in a hollow organ by using a device inserted into the hollow organ from a natural orifice of a patient; introducing a first observation device from said orifice formed in said hollow organ into an abdominal cavity; introducing a second observation device from said orifice formed in said hollow organ into the abdominal cavity; arranging said second observation device in a position different from that of said first observation device; simultaneously or selectively displaying an image obtained from said first observation device and an image obtained from said second observation device; and performing a desired procedure in the abdominal cavity while confirming the images.Type: ApplicationFiled: January 5, 2007Publication date: November 1, 2007Applicant: Olympus Medical Systems CorporationInventors: David Barlow, Takayasu Mikkaichi, Kensei Nakahashi
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Publication number: 20070213749Abstract: A medical procedure performed inside an abdominal cavity includes: performing a first treatment at a target position inside the abdominal cavity by a first apparatus that has been introduced percutaneously into the abdominal cavity; and performing a second treatment, using a second apparatus that has been introduced into the abdominal cavity via a natural aperture of a living body, in cooperation with the first apparatus inside the abdominal cavity, or alternatively, performing a second treatment that is necessitated as a result of the first treatment being performed after the first treatment has been performed.Type: ApplicationFiled: March 8, 2006Publication date: September 13, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Takahiro Kogasaka, Takayasu Mikkaichi, Kensei Nakahashi
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Publication number: 20070173859Abstract: The medical procedure via a natural opening according to the present invention includes: adjusting the patient's body so that a target site on the anterior wall of a hollow organ faces in the direction opposite to the direction of gravitational force; introducing a liquid inflow conduit in the vicinity of the target site, and flowing liquid into the hollow organ via the liquid inflow conduit, to form a liquid holding area and a gas retaining area inside the hollow organ; introducing an observation device into the hollow organ, and confirming the position of the target site from the position of the gas retaining area; and incising while observation the target area.Type: ApplicationFiled: January 13, 2006Publication date: July 26, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Takayasu Mikkaichi, Kensei Nakahashi, Kunihide Kaji, Hironobu Kawano
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Publication number: 20070163597Abstract: An over-tube of the present invention is an over-tube which guides a device having an insertion section to be inserted into a body of a patient, when inserting the insertion section into or retracting the insertion section from the body of the patient, wherein: a gas-supplying passage is defined between an inner face of the over-tube and the device to be inserted into the over-tube; the gas-supplying passage communicates with a gas-supplying port which is provided on a proximal end side of the over-tube, and a communicating port which is formed on an over-tube insertion section and supplies a gas into a trachea of the patient; and a sealing member which surrounds the communicating port and seals between a body wall of the patient and the communicating port, is provided on a periphery of an over-tube insertion section.Type: ApplicationFiled: January 13, 2006Publication date: July 19, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Takayasu Mikkaichi, Kensei Nakahashi, Kiyotaka Matsuno, Kunihide Kaji
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Publication number: 20070163604Abstract: A leak test method for a medical procedure via a natural orifice includes: inflating the abdominal cavity by introducing a gas into the abdominal cavity via a conduit inserted from the abdominal cavity after closing an opening that communicates between the inside of a hollow organ and the inside of the abdominal cavity using an instrument inserted via the patient's natural orifice; monitoring no leakage between the hollow organ and the abdominal cavity of a fluid passing through the closed opening; and removing the conduit inserted into the abdominal cavity once no leakage of the fluid has been confirmed.Type: ApplicationFiled: January 13, 2006Publication date: July 19, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Takayasu Mikkaichi, Kensei Nakahashi
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Publication number: 20070167967Abstract: A medical procedure performed via a natural orifice comprises: inserting a puncture device from an abdominal wall side into the vicinity of a target site in a hollow organ, and protruding the distal end thereof inside the hollow organ; introducing an observation device into the hollow organ via a natural orifice of a living body, and setting a target site at the hollow organ by checking the puncture device as an indicator; and treating the target site confirmed by the observation device by using an treatment device inserted via a natural orifice.Type: ApplicationFiled: January 13, 2006Publication date: July 19, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Takayasu Mikkaichi, Takahiro Kogasaka, Kensei Nakahashi
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Publication number: 20070163596Abstract: An endotracheal tube according to the present invention is used by being installed into a patient so as to use it together with a device having an insertion section which is inserted into the body. A portion overlapping with the device inserted into the patient is formed as a flat shape; and furthermore, an outer face portion formed along a longitudinal direction of a cross-section, of the portion formed in the flat shape contacts the device.Type: ApplicationFiled: January 13, 2006Publication date: July 19, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Takayasu Mikkaichi, Takahiro Kogasaka, Tetsuya Yamamoto, Kensei Nakahashi, Hironobu Kawano
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Publication number: 20070161855Abstract: A medical procedure through a natural orifice according to the present invention comprises: forming an orifice in a hollow organ by using a device inserted into the hollow organ from a natural orifice of a patient; introducing a first observation device from the orifice formed in the hollow organ into an abdominal cavity; introducing a second observation device from the orifice formed in the hollow organ into the abdominal cavity; arranging the second observation device in a position different from that of the first observation device; simultaneously or selectively displaying an image obtained from the first observation device and an image obtained from the second observation device; and performing a desired procedure in the abdominal cavity while confirming the images.Type: ApplicationFiled: January 6, 2006Publication date: July 12, 2007Applicant: OLYMPUS MEDICAL SYSTEMS CORP.Inventors: Takayasu Mikkaichi, Kensei Nakahashi
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Publication number: 20070157937Abstract: The medical procedure via a natural opening according to the present invention includes: disposing a target on the body surface near a target site on the inner wall of a hollow organ; introducing a guide member into the hollow organ via a natural natural opening, guiding the guide member to the target site using the target, and confirming the target site by means of a observation device; and carrying out a procedure at the target site while observing the target site.Type: ApplicationFiled: January 11, 2006Publication date: July 12, 2007Inventors: Takayasu Mikkaichi, Kensei Nakahashi
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Publication number: 20060253128Abstract: When a living tissue of a ligation target is ligated by means of a snare wire, the snare wire is brought into contact with the living tissue of a ligation target, on a large contact face by means for preventing living tissue cut-in of a ligation target of at least one of a distal end chip and a rear end ring of a loop section of the snare wire, thereby preventing the living tissue of a ligation target from cutting into a contact face of at least one of the distal end chip and rear end ring of the loop section.Type: ApplicationFiled: March 15, 2006Publication date: November 9, 2006Applicant: OLYMPUS CORPORATIONInventors: Ryuta Sekine, Akira Suzuki, Raifu Matsui, Yuta Okada, Kensei Nakahashi