Patents by Inventor Tadashi Kousai

Tadashi Kousai 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).

  • Patent number: 9180278
    Abstract: A medical instrument to be inserted into a living body before being used. The medical instrument is provided with a medical instrument main body including a long linear body having flexibility on which a coating layer covering at least the outer periphery on the distal side thereof is formed. The coating layer composes of a first layer which includes a material containing a low-friction resin material capable of lowering friction and a binder resin material serving as a binder; a second layer which is formed on the first layer and includes a material containing a low-friction resin material and a pigment and in which the content of a binder resin material is lower than the binder resin material content of the first layer or nil; and a third layer which is formed on the second layer and includes a material containing a low-friction resin material.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: November 10, 2015
    Assignee: TERUMO KABUSHIKI KAISHA
    Inventors: Junichi Kobayashi, Yasushi Kinoshita, Tadashi Kousai
  • Patent number: 9028427
    Abstract: A guide wire includes an elongate wire body, and a marker at least at a distal-side portion of the wire body over the whole circumference to indicate the intracorporeal position of the wire body. The marker has a first line-forming portion and a second line-forming portion which intersect each other at a plurality of locations so that the marker has a grid-like shape as a whole. According to another aspect, a guide wire includes a member with a core wire, a marker-forming layer partly encircling the outer surface of the member and differing in color from the member, and a coating layer covering the marker-forming layer and the member at least in the marker-forming layer region and having transparency making the marker-forming layer visible. The marker-forming and coating layers can be formed from mutually miscible resins, while the marker-forming layer functions as a visible marker.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: May 12, 2015
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Yasushi Kinoshita, Junichi Kobayashi, Tadashi Kousai
  • Patent number: 8827926
    Abstract: A guide wire includes an elongated wire body and a radiopaque part capable of forming an X-ray image and located at the distal end portion of the wire body. The radiopaque part has a radiopaque member and a resin coating layer. The radiopaque member is composed of a metallic material capable of forming an X-ray image and arranged outside the wire body and in the lengthwise direction of the wire body. The resin coating layer covers the radiopaque member and at least part of coating layer contains a radiopaque material capable of forming an X-ray image. The radiopaque part is divided into a first radiopaque region, a second radiopaque region, and a third radiopaque region which are sequentially arranged from the distal end in the lengthwise direction of the wire body.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: September 9, 2014
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Yasushi Kinoshita, Junichi Kobayashi, Tadashi Kousai
  • Patent number: 8647353
    Abstract: An endoscopic treatment tool according to the present invention is an endoscopic treatment tool which is inserted into hollow organs via the mouth, nose, anus, or other natural orifice of the patient and performs suturing treatment within the hollow organs or abdominal cavities, includes: a hollow organ lining support which is smaller than the smallest diameter of a passage from a natural orifice of the hollow organ, the hollow organ lining support being able to expand so as to have a diameter larger than the smallest diameter of the passage from the natural orifice of the hollow organ.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: February 11, 2014
    Assignees: Olympus Medical Systems Corp., Kaisha, Terumo Kabushiki
    Inventors: Takayasu Mikkaichi, Kunihide Kaji, Junichi Kobayashi, Takayuki Suzuki, Takahiro Kogasaka, Yasushi Kinoshita, Tadashi Kousai
  • Patent number: 8568373
    Abstract: An elongate member housing tool assembly includes a distal end side tubular member disposed on the distal end side and a proximal end side tubular member disposed on the proximal end side, which accommodate an elongate member, and a liquid inlet port to which a liquid supplying tool for supplying liquid into the distal end side tubular member is removably connected and which is provided on the distal end side tubular member. The distal end side tubular member and the proximal end side tubular member are wound spirally, and the proximal end of the distal end side tubular member and the distal end of the proximal end side tubular member are disposed in a spaced relationship from each other. A distal portion of the guide wire is accommodated in the distal end side tubular member, except possibly the most distal portion of the elongate member.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: October 29, 2013
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Junko Kuniyasu, Junichi Kobayashi, Yasushi Kinoshita, Tadashi Kousai
  • Patent number: 8376962
    Abstract: A guide wire includes a core possessing a distal end part and a proximal end part, a distal covering layer covering the distal end part of the core, and a proximal covering layer covering the proximal end part of the core. The proximal covering layer includes a first layer that covers the surface of the core, and a second layer that partly covers the surface of the first layer. The first layer has a first part which is not covered by the second layer and a second part which is covered by the second layer, and the surface of the second part is tightly surrounded by the proximal end of the distal covering layer.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: February 19, 2013
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Tadashi Kousai, Akihiko Umeno
  • Patent number: 8187206
    Abstract: A guide wire includes a member with a core wire. The guide wire may have a marker-forming layer which partly encircles the outer surface of the member and differs in color from the member, and a coating layer which covers the marker-forming layer and the member at least in the region where the marker-forming layer is formed and has such transparency as to make the marker-forming layer visible. The marker-forming layer and the coating layer can be formed from mutually miscible resins, while the marker-forming layer functions as a visible marker.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: May 29, 2012
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Yasushi Kinoshita, Junichi Kobayashi, Tadashi Kousai
  • Publication number: 20120022470
    Abstract: An elongate member housing tool assembly includes a distal end side tubular member disposed on the distal end side and a proximal end side tubular member disposed on the proximal end side, which accommodate an elongate member, and a liquid inlet port to which a liquid supplying tool for supplying liquid into the distal end side tubular member is removably connected and which is provided on the distal end side tubular member. The distal end side tubular member and the proximal end side tubular member are wound spirally, and the proximal end of the distal end side tubular member and the distal end of the proximal end side tubular member are disposed in a spaced relationship from each other. A distal portion of the guide wire is accommodated in the distal end side tubular member, except possibly the most distal portion of the elongate member.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 26, 2012
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Junko Kuniyasu, Junichi KOBAYASHI, Yasushi KINOSHITA, Tadashi KOUSAI
  • Publication number: 20100228229
    Abstract: A guide wire includes a core possessing a distal end part and a proximal end part, a distal covering layer covering the distal end part of the core, and a proximal covering layer covering the proximal end part of the core. The proximal covering layer includes a first layer that covers the surface of the core, and a second layer that partly covers the surface of the first layer. The first layer has a first part which is not covered by the second layer and a second part which is covered by the second layer, and the surface of the second part is tightly surrounded by the proximal end of the distal covering layer.
    Type: Application
    Filed: March 9, 2010
    Publication date: September 9, 2010
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Tadashi Kousai, Akihiko Umeno
  • Patent number: 7753859
    Abstract: A guide wire includes a wire body having a core wire and a resin coating layer covering an outer periphery of a distal section of the wire body, and an annular member provided on the proximal side of the resin coating layer. The outer diameter of the distal end of the annular member and the outer diameter of the proximal end of the resin coating layer are preferably equal, and a distal end face of the annular member is joined to a proximal end face of the resin coating layer.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: July 13, 2010
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Yasushi Kinoshita, Junichi Kobayashi, Tadashi Kousai
  • Publication number: 20090182246
    Abstract: A guide wire includes an elongated wire body and a radiopaque part capable of forming an X-ray image and located at the distal end portion of the wire body. The radiopaque part has a radiopaque member and a resin coating layer. The radiopaque member is composed of a metallic material capable of forming an X-ray image and arranged outside the wire body and in the lengthwise direction of the wire body. The resin coating layer covers the radiopaque member and at least part of coating layer contains a radiopaque material capable of forming an X-ray image. The radiopaque part is divided into a first radiopaque region, a second radiopaque region, and a third radiopaque region which are sequentially arranged from the distal end in the lengthwise direction of the wire body.
    Type: Application
    Filed: December 24, 2008
    Publication date: July 16, 2009
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasushi Kinoshita, Junichi Kobayashi, Tadashi Kousai
  • Publication number: 20090163833
    Abstract: A guide wire includes an elongate wire body, and a marker at least at a distal-side portion of the wire body over the whole circumference to indicate the intracorporeal position of the wire body. The marker has a first line-forming portion and a second line-forming portion which intersect each other at a plurality of locations so that the marker has a grid-like shape as a whole. According to another aspect, a guide wire includes a member with a core wire, a marker-forming layer partly encircling the outer surface of the member and differing in color from the member, and a coating layer covering the marker-forming layer and the member at least in the marker-forming layer region and having transparency making the marker-forming layer visible. The marker-forming and coating layers can be formed from mutually miscible resins, while the marker-forming layer functions as a visible marker.
    Type: Application
    Filed: January 15, 2009
    Publication date: June 25, 2009
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasushi KINOSHITA, Junichi Kobayashi, Tadashi Kousai
  • Publication number: 20080281230
    Abstract: A guide wire includes a wire body having a core wire and a resin coating layer covering an outer periphery of a distal section of the wire body, and an annular member provided on the proximal side of the resin coating layer. The outer diameter of the distal end of the annular member and the outer diameter of the proximal end of the resin coating layer are preferably equal, and a distal end face of the annular member is joined to a proximal end face of the resin coating layer.
    Type: Application
    Filed: May 7, 2008
    Publication date: November 13, 2008
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasushi Kinoshita, Junichi Kobayashi, Tadashi Kousai
  • Publication number: 20080242933
    Abstract: An endoscopic treatment tool according to the present invention is an endoscopic treatment tool which is inserted into hollow organs via the mouth, nose, anus, or other natural orifice of the patient and performs suturing treatment within the hollow organs or abdominal cavities, includes: a hollow organ lining support which is smaller than the smallest diameter of a passage from a natural orifice of the hollow organ, the hollow organ lining support being able to expand so as to have a diameter larger than the smallest diameter of the passage from the natural orifice of the hollow organ.
    Type: Application
    Filed: December 27, 2007
    Publication date: October 2, 2008
    Applicants: OLYMPUS MEDICAL SYSTEMS CORP., TERUMO KABUSHIKI KAISHA
    Inventors: Takayasu MIKKAICHI, Kunihide KAJI, Junichi KOBAYASHI, Takayuki SUZUKI, Takahiro KOGASAKA, Yasushi KINOSHITA, Tadashi KOUSAI
  • Publication number: 20080228109
    Abstract: A guide wire includes a member with a core wire. The guide wire may have a marker-forming layer which partly encircles the outer surface of the member and differs in color from the member, and a coating layer which covers the marker-forming layer and the member at least in the region where the marker-forming layer is formed and has such transparency as to make the marker-forming layer visible. The marker-forming layer and the coating layer can be formed from mutually miscible resins, while the marker-forming layer functions as a visible marker.
    Type: Application
    Filed: March 14, 2008
    Publication date: September 18, 2008
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Yasushi Kinoshita, Junichi Kobayashi, Tadashi Kousai
  • Publication number: 20070265595
    Abstract: The invention includes: an operation wire which is inserted into a catheter, and is supported on a distal end or the vicinity of the catheter; and an operation portion which moves the operation wire back and forth with respect to the catheter. The catheter is provided with a curvable portion wherein the distal direction of the catheter is curved with respect to the proximal direction of the catheter.
    Type: Application
    Filed: May 9, 2006
    Publication date: November 15, 2007
    Applicants: OLYMPUS MEDICAL SYSTEMS CORP., TERUMO KABUSHIKI KAISHA
    Inventors: Satoshi Miyamoto, Kousuke Motai, Takehiro Nishiie, Junichi Muramatsu, Yasuyuki Kuroda, Tadashi Kousai, Junichi Kobayashi, Yasushi Kinoshita
  • Patent number: 4919605
    Abstract: An extruder apparatus for molding a tube used for guiding a rod-like medical instrument into a living body. The resulting tubular body is made of a synthetic resin and has a longitudinal hollow portion to permit the passage of the rod-like medical instrument. The whole of the tubular body is formed to have a chemical uniformity, but at least one brittle portion such as a weld line is longitudinally formed over the entire length (or almost the entire length except the tip portion) of the tubular body. The brittle portion is formed by a die including a nozzle having a resin flow passageway of annular cross section. At least one baffle extends radially into the passageway for substantially temporarily splitting the flow which is then recombined to form the brittle portion.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: April 24, 1990
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Tadashi Kousai, Yousuke Moriuchi, Toshinobu Ishida
  • Patent number: 4906233
    Abstract: A method of firmly securing a catheter body to a surface portion of human skin, without causing the catheter body to be bent or reducing the diameter of the inner passage of the catheter body. This method employs a catheter-securing member which comprises a cylindrical body for allowing the catheter body to be slidably inserted therein, and a slit is provided along the axial direction of the cylindrical body. In this method a ligature is first pierced through a surface portion of human skin and tied over the surface of human skin, leaving a pair of free end portions extending out of the skin, and then the cylindrical body is secured with the free end portions of the ligature by winding the ligature around the cylindrical body and fastening them.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: March 6, 1990
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Yousuke Moriuchi, Toshinobu Ishida, Tadashi Kousai
  • Patent number: 4883468
    Abstract: Medical instrument introduction cannula, which is useful as a guide means for introducing and indwelling a rod-like material instrument such as a catheter and a guide wire. This cannula is removed after use from the medical instrument by being splitted. This cannula is formed of a hollow tubular body having a strip member consisting of a material different from the other portion of the tubular body, which extends over the entire or almost the entire length of the tubular body. The strip member has a weld line along the length of the strip member, or consists of a resin which exhibits a good bonding property only to one of the other components forming the tubular body. The tubular body can be splitted by way of the weld line or the removal of the strip member having such a bonding property. The method of manufacturing the medical instrument introduction cannular by a two-color extruder is also disclosed.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: November 28, 1989
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Tadashi Kousai, Toshinobu Ishida, Yousuke Moriuchi
  • Patent number: D611596
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: March 9, 2010
    Assignee: Terumo Kabushiki Kaisha
    Inventors: Tadashi Kousai, Junichi Kobayashi, Yasushi Kinoshita