Patents by Inventor Junji Shiono

Junji Shiono 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: 20170136207
    Abstract: A catheter includes: an outer tube; an inner tube provided inside of the outer tube; and a branched part that separates the outer tube and the inner tube from each other on a first end side thereof, wherein a ratio between cross-sectional areas of a first lumen formed at least by inside of the outer tube and outside of the inner tube and a second lumen formed within the inner tube is set such that a ratio between cross-sectional areas of the outer tube and the inner tube in the branched part is equal to or greater than the ratio between the cross-sectional areas of the first lumen and the second lumen in a state where the inner tube is arranged inside of the outer tube in a length direction in which the outer tube and the inner tube extend.
    Type: Application
    Filed: December 5, 2016
    Publication date: May 18, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Junji SHIONO, Hiromichi MIYANO
  • Publication number: 20170080181
    Abstract: A catheter includes: a conduit part having a plurality of lumens whose external diameter at a tip side thereof is constant, each of the plurality of lumens extending along an axis line inside the conduit part; and a branched part that separates axis lines of the plurality of lumens from each other at a base end side of the conduit part. At an end of the conduit part inserted into inside the branched part, an opening of each of the plurality of lumens is provided along a different axis line with each other, and a level difference is formed at the end of the conduit part.
    Type: Application
    Filed: December 6, 2016
    Publication date: March 23, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Junji SHIONO, Yusuke NOMURA
  • Patent number: 8911454
    Abstract: A suturing device that sutures tissues by releasing a suture unit includes: a first anchor and a second anchor included in the suture unit; a hollow needle receiving the first and second anchors inside of the needle; a tube which is fixed to a proximal end of the needle; a wire inserted into the tube and the needle; a first sheath through which the tube and the needle are inserted; an operating portion main body fixed to a proximal end of the first sheath; a slider fixed to a proximal end of the tube and configured to move forward and backward freely in a sliding manner with respect to the operating portion main body; a slider control portion configured to regulate movement of the slider with respect to the operating portion main body at all times; a handle portion provided in the slider; and a deactivation member.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: December 16, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: Kensuke Hayashi, Junji Shiono
  • Patent number: 8876699
    Abstract: A fistulectomy method of forming a fistula between a first duct and a second duct is provided. The method including: inserting an insertion portion of an endoscope having a channel into the first duct; inserting a treatment instrument into the channel; feeding a distal end of the treatment instrument into the second duct through the first duct; discharging a first magnet from the distal end of the treatment instrument to the second duct; pulling the treatment instrument from the second duct; discharging a second magnet to the first duct; and attaching the first magnet and the second magnet magnetically when the first and second ducts are between the first and second magnets.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: November 4, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: Masatoshi Sato, Kunihide Kaji, Takayuki Suzuki, Junji Shiono, Takayasu Mikkaichi, Akiko Mizunuma
  • Patent number: 8715281
    Abstract: This treatment device for endoscope is used for cutting body tissue while the treatment device is retractably projected from a catheter. The treatment device includes: a control wire inserted into the catheter; and a cutting electrode mounted at the distal end of the control wire with the cutting electrode being imparted a bent configuration in advance. The cutting electrode elastically deforms in a state where the cutting electrode is retracted into the catheter, thereby assuming such a shape as to resemble the configuration of the catheter.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: May 6, 2014
    Assignee: Olympus Medical Systems Corp.
    Inventors: David E. Barlow, Kunihide Kaji, Takayuki Suzuki, Masatoshi Sato, Kensuke Hayashi, Takayasu Mikkaichi, Junji Shiono
  • Patent number: 8231640
    Abstract: A suture instrument includes: a therapeutic insertion section having a suture section for suturing tissue; a cylindrical main operation unit; a rod section in the main operation unit, for discharging a suture thread and end section members connected to the suture thread; a pusher's distal end section for pressing the end section member; and a guide mechanism for rotating the rod section after linear movement of the pusher's distal end section at a position where one of the end section member is fed from a distal end of the suture section, the rod section being rotated in the circumferential direction to a position where the other one of the end section members is fed from the distal end of the suture section, so that each one of the end section members is discharged one after another and so that the end section members can be separated finally.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: July 31, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Kensuke Hayashi, Junji Shiono
  • Patent number: 8128657
    Abstract: A suture instrument according to the present invention includes a suture tool having an anchor anchored to a biological tissue, a suture thread drawn out of the anchor, and a stopper disposed on the suture thread; a hollow puncture needle, which can house the anchor thereinside, having a hard needle portion formed with an opening at the distal end thereof; a pusher which is disposed to advance and retreat in the puncture needle and a proximal side of which extends to a proximal side with its distal end being in contact with the anchor; and an outer sheath which houses the puncture needle so as to advance and retreat, in which an engaging portion, which is detachably engaged with the suture thread which is drawn in a state where the anchor is housed in the puncture needle, is disposed in the puncture needle or in the pusher.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: March 6, 2012
    Assignee: Olympus Medical Systems Corp.
    Inventors: Junji Shiono, Kunihide Kaji, Takayuki Suzuki
  • Patent number: 7998150
    Abstract: A suturing device is disclosed which sutures a tissue using a suture unit having a suture thread with both ends fitted to a first anchor and a second anchor, respectively. The suturing device includes a hollow tip member receiving the first and second anchors; a wire having a front end inserted through the hollow tip member so that the first and second anchors can be released out from the hollow tip member; a flexible tube, a parallel member, a relative position holding member, a forward movement restricting member, and an operating portion. At least one of the hollow tip member, the forward movement restricting member, and the flexible tube has a communication portion on an outer peripheral surface thereof so as to communicate with an internal cavity, and a middle portion of the suture unit is inserted into the communication portion and is tied to the wire.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: August 16, 2011
    Assignee: Olympus Medical Systems Corp.
    Inventors: Junji Shiono, Yuta Muyari, Kensuke Hayashi
  • Patent number: 7780702
    Abstract: A suture tool is provided in which the fixing member includes: a base portion which has a thin and longitudinal plate shape and which has a through-hole through which the suture thread passes; and a pair of bent pieces of which ends are opposed to each other by bending both ends of the base portion toward the center thereof. Thick plate portions which are thick in an insertion direction of the suture thread and which interpose the suture thread therebetween are disposed at the ends of the pair of bent pieces, respectively.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: August 24, 2010
    Assignee: Olympus Medical Systems Corp.
    Inventor: Junji Shiono
  • Publication number: 20100099947
    Abstract: A fistulectomy method of forming a fistula between a first duct and a second duct is provided. The method including: inserting an insertion portion of an endoscope having a channel into the first duct; inserting a treatment instrument into the channel; feeding a distal end of the treatment instrument into the second duct through the first duct; discharging a first magnet from the distal end of the treatment instrument to the second duct; pulling the treatment instrument from the second duct; discharging a second magnet to the first duct; and attaching the first magnet and the second magnet magnetically when the first and second ducts are between the first and second magnets.
    Type: Application
    Filed: December 24, 2009
    Publication date: April 22, 2010
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Masatoshi Sato, Kunihide Kaji, Takayuki Suzuki, Junji Shiono, Takayasu Mikkaichi, Akiko Mizunuma
  • Publication number: 20100030237
    Abstract: A suture instrument includes: a therapeutic insertion section having a suture section formed on the distal end thereof and suturing a tissue endoscopically; a cylindrical main operation unit connected to a proximal end of the therapeutic insertion section; a rod section inserted into the main operation unit along an axial line of the main operation unit from a proximal end of the main operation unit, the rod section conducting operations for discharging a suture thread and a plurality of end section members connected to at least an end of the suture thread from a distal end of the suture section; a pusher's distal end section for pressing the end section member to move corresponding to the operations conducted by the rod section; and a guide mechanism for rotating the rod section by a predetermined degree in the circumferential direction after conducting a linear movement of the pusher's distal end section at a position where one of the end section member is fed from a distal end of the suture section, and gu
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Inventors: Kensuke Hayashi, Junji Shiono
  • Publication number: 20100030236
    Abstract: A suturing device is disclosed which sutures a tissue using a suture unit having a suture thread with both ends fitted to a first anchor and a second anchor, respectively. The suturing device includes: a hollow tip member receiving the first and second anchors; a wire having a front end inserted through the tip member so that the first and second anchors can be released from the tip member; a flexible tube having a distal end integrally connected to a proximal end portion of the tip member, through which the wire is inserted so as to freely move forward and backward in the axial direction of the tube; a main body fixed to a proximal end of a sheath through which the tube is inserted; and a sliding portion fixed to the proximal end of the tube and fitted to the main body so as to freely move with respect to the main body in the axial direction in a sliding manner.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Inventors: Kensuke Hayashi, Junji Shiono
  • Publication number: 20090259232
    Abstract: A suture device which sutures tissue using a suture unit having a first anchor and a second anchor respectively attached to both ends of a suture thread, wherein a hollow distal member is provided which houses said first anchor and second anchor, the end face of the distal side of said distal member is formed so as to constitute a first sharp angle with the axis of said distal member, the distal side of said second anchor is provided with a sloped face so as to constitute a second sharp angle with the axis of said second anchor which is an angle at or below said first sharp angle, and said first anchor and said second anchor are axially aligned and housed inside said distal member so that said second anchor is positioned on the proximal side.
    Type: Application
    Filed: April 11, 2008
    Publication date: October 15, 2009
    Inventors: Junji SHIONO, Kensuke HAYASHI, Takayuki SUZUKI
  • Publication number: 20090182192
    Abstract: An endoscope treatment instrument having a needle for puncturing a biological tissue in a body cavity includes an indicator region provided on the outer surface of the needle including an indicator shape having miniature concave portions, and a plain region without the indicator shape provided in connection with at least one side of the indicator region in the axial line direction of the needle.
    Type: Application
    Filed: January 14, 2008
    Publication date: July 16, 2009
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Junji SHIONO, Kensuke HAYASHI, Yuta MUYARI, Takayuki SUZUKI
  • Publication number: 20090125039
    Abstract: A suture instrument that is inserted into a body and ejects an elongated anchor to which a suture thread that sutures a perforation is connected and which is placed on tissue, including a base that extends from a proximal end on a hand side to a remote end that is introduced to tissue and has flexibility; an anchor holding instrument that is disposed at the remote end of the base, is capable of housing a plurality of the anchors inside, and whose distal end that ejects the anchors is approximately pointed in the direction of the proximal end of the base; a tip position changing mechanism that is provided for changing the tip position of the anchor holding instrument and causes the anchor holding instrument to move in a direction that intersects with the axial line of the lengthwise direction of the base; and a position operation device that operates the tip position changing mechanism at the hand side and operates the tip position of the anchor holding instrument.
    Type: Application
    Filed: March 28, 2008
    Publication date: May 14, 2009
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Takayasu MIKKAICHI, Masayuki IWASAKA, Takayuki SUZUKI, Kunihide KAJI, Junji SHIONO, Kensuke HAYASHI, Masatoshi SATO
  • Publication number: 20090088780
    Abstract: A suturing device is disclosed which sutures a tissue using a suture unit having a suture thread with both ends fitted to a first anchor and a second anchor, respectively.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Junji SHIONO, Yuta MUYARI, Kensuke HAYASHI
  • Publication number: 20080243148
    Abstract: A suture instrument that is inserted into a body and ejects an elongated anchor to be engaged to tissue, consisting of: an elongated member that extends from a proximal end on a hand side to a remote end that is introduced to tissue and has flexibility; a needle that is provided at the remote end of the elongated member, has at the distal end a sharp tip that is capable of puncturing tissue, is capable of housing a plurality of the anchors inside, and is provided with a side hole through which the anchors are capable of passing; a pusher whose remote end abuts the anchor that is housed in the needle and is disposed in a manner to be capable of moving in the axial direction of the elongated member; and a push-out control portion that is provided in the needle or the pusher and changes the movement direction of the anchor that has been moved to a formation position of the side hole by the pusher from the length-wise direction of the needle to a direction heading toward the side hole.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Takayasu MIKKAICHI, Takayuki SUZUKI, Kunihide KAJI, Junji SHIONO, Kensuke HAYASHI, Masatoshi SATO, Masayuki IWASAKA
  • Publication number: 20080208218
    Abstract: A suture tool is provided in which the fixing member includes: a base portion which has a thin and longitudinal plate shape and which has a through-hole through which the suture thread passes; and a pair of bent pieces of which ends are opposed to each other by bending both ends of the base portion toward the center thereof. Thick plate portions which are thick in an insertion direction of the suture thread and which interpose the suture thread therebetween are disposed at the ends of the pair of bent pieces, respectively.
    Type: Application
    Filed: February 27, 2007
    Publication date: August 28, 2008
    Applicant: Olympus Medical Systems Corp.
    Inventor: Junji Shiono
  • Publication number: 20080208220
    Abstract: A suture instrument according to the present invention includes a suture tool having an anchor anchored to a biological tissue, a suture thread drawn out of the anchor, and a stopper disposed on the suture thread; a hollow puncture needle, which can house the anchor thereinside, having a hard needle portion formed with an opening at the distal end thereof; a pusher which is disposed to advance and retreat in the puncture needle and a proximal side of which extends to a proximal side with its distal end being in contact with the anchor; and an outer sheath which houses the puncture needle so as to advance and retreat, in which an engaging portion, which is detachably engaged with the suture thread which is drawn in a state where the anchor is housed in the puncture needle, is disposed in the puncture needle or in the pusher.
    Type: Application
    Filed: February 27, 2007
    Publication date: August 28, 2008
    Applicant: Olympus Medical Systems Corporation
    Inventors: Junji Shiono, Kunihide Kaji, Takayuki Suzuki
  • Publication number: 20080051655
    Abstract: An ultrasonic endoscope includes an insertion section, an operation section, an optical observation system, and an ultrasonic observation system. The optical observation system is disposed in the insertable section, and has an objective lens located on a face of a distal end of the insertion section. The ultrasonic observing system is disposed in the insertion section, and has an ultrasonic transducer disposed on the face of the distal end of the insertion section or further forward than the distal end.
    Type: Application
    Filed: August 27, 2007
    Publication date: February 28, 2008
    Inventors: Masatoshi SATO, Kunihide KAJI, Takayuki SUZUKI, Junji SHIONO, Takayasu MIKKAICHI, Shinichi TSUTAKI, Toshihiro SHIZUKA, Takeharu NAKAZATO, Sunao SATO, Akiko MIZUNUMA