Patents by Inventor Kunihiko Miyagi

Kunihiko Miyagi 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: 8696551
    Abstract: The flexible endoscope 20 has a flexible insertion portion 22 to be inserted in an observation zone 11 of a MRI apparatus 10. The insertion portion 22 has an inner tube 71 made of resin, triple helical tubes 72 covering the inner tube 71 and an outer tube 73 made of resin and covering the triple helical tubes 72. The triple helical tubes 72 include a first helical band 721 helically wound around an outer peripheral surface of the inner tube 71, a second helical band 722 helically wound around an outer periphery of the first helical band 721 in a direction opposite to a winding direction of the first helical band 721 and a third helical band 723 helically wound around an outer periphery of the second helical band 722 in a direction opposite to the winding direction of the second helical band 722. The first to third helical bands 721, 722, 723 are made of phosphor bronze or copper-silver alloy, which are materials having low magnetic susceptibility.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: April 15, 2014
    Assignees: Machida Endoscope Co., Ltd., Shiga University of Medical Science
    Inventors: Kunihiko Miyagi, Masayuki Misawa, Tohru Tani, Yoshimasa Kurumi, Shigeyuki Naka
  • Patent number: 8066722
    Abstract: A clip applier includes a body 21, an insertion tube 22 extending from the body 21 and inserted in a channel of an endoscope and a clamp mechanism 24 disposed at a distal end of the insertion tube 22. The clamp mechanism 24 has a support member 28 fixed at the distal end of the insertion tube 22 and a pair of clamp members 30 rotatably supported by the support member 28. The clamp members 30 are connected to a distal end of a wire 25 via a pair of links 35. The clamp members 30 respectively include gripping portions 32 protruding form the support member 28. A clip 50 is received in receiving grooves 32a of the gripping portions 32. When the wire 25 is pulled by operating an operation member disposed on the body 21, the clamp members 30 are rotated against an elastic force of a hinge portion 51 of the clip 50, thereby causing a pair of clip portions 53 of the clip 50 to be opened.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: November 29, 2011
    Assignee: Machida Endoscope Co., Ltd.
    Inventors: Kunihiko Miyagi, Masayuki Misawa
  • Publication number: 20100249511
    Abstract: Means to Solve The flexible endoscope 20 has a flexible insertion portion 22 to be inserted in an observation zone 11 of a MRI apparatus 10. The insertion portion 22 has an inner tube 71 made of resin, triple helical tubes 72 covering the inner tube 71 and an outer tube 73 made of resin and covering the triple helical tubes 72. The triple helical tubes 72 include a first helical band 721 helically wound around an outer peripheral surface of the inner tube 71, a second helical band 722 helically wound around an outer periphery of the first helical band 721 in a direction opposite to a winding direction of the first helical band 721 and a third helical band 723 helically wound around an outer periphery of the second helical band 722 in a direction opposite to the winding direction of the second helical band 722. The first to third helical bands 721, 722, 723 are made of phosphor bronze or copper-silver alloy, which are materials having low magnetic susceptibility.
    Type: Application
    Filed: February 22, 2008
    Publication date: September 30, 2010
    Applicants: MACHIDA ENDOSCOPE CO., LTD., SHIGA UNIVERSITY OF MEDICAL SCIENCE
    Inventors: Kunihiko Miyagi, Masayuki Misawa, Tohru Tani, Yoshimasa Kurumi, Shigeyuki Naka
  • Patent number: 7736303
    Abstract: A wire member 50 is received in a flexible part 22 of an endoscope 20 and adapted to remotely curvilinearly control a bendable part 27 at a distal end of the flexible insertion part 22. The wire member 50 includes a braid 51 braiding from a plurality of resin fibers and an adhesive agent 52 impregnated in the braid 51 and hardened. The impregnating and hardening of the adhesive agent 52 are carried out in a state where the braid 51 is applied with a tensile force having a predetermined magnitude.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: June 15, 2010
    Assignee: Machida Endoscope Co., Ltd.
    Inventors: Kunihiko Miyagi, Masayuki Misawa
  • Publication number: 20090088777
    Abstract: A clip applier includes a body 21, an insertion tube 22 extending from the body 21 and inserted in a channel of an endoscope and a clamp mechanism 24 disposed at a distal end of the insertion tube 22. The clamp mechanism 24 has a support member 28 fixed at the distal end of the insertion tube 22 and a pair of clamp members 30 rotatably supported by the support member 28. The clamp members 30 are connected to a distal end of a wire 25 via a pair of links 35. The clamp members 30 respectively include gripping portions 32 protruding form the support member 28. A clip 50 is received in receiving grooves 32a of the gripping portions 32. When the wire 25 is pulled by operating an operation member disposed on the body 21, the clamp members 30 are rotated against an elastic force of a hinge portion 51 of the clip 50, thereby causing a pair of clip portions 53 of the clip 50 to be opened.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 2, 2009
    Applicant: Machida Endoscope Co., Ltd.
    Inventors: Kunihiko MIYAGI, Masayuki MISAWA
  • Publication number: 20080208003
    Abstract: A wire member 50 is received in a flexible part 22 of an endoscope 20 and adapted to remotely curvilinearly control a bendable part 27 at a distal end of the flexible insertion part 22. The wire member 50 includes a braid 51 braiding from a plurality of resin fibers and an adhesive agent 52 impregnated in the braid 51 and hardened. The impregnating and hardening of the adhesive agent 52 are carried out in a state where the braid 51 is applied with a tensile force having a predetermined magnitude.
    Type: Application
    Filed: February 26, 2008
    Publication date: August 28, 2008
    Applicant: MACHIDA ENDOSCOPE CO., LTD.
    Inventors: Kunihiko Miyagi, Masayuki Misawa
  • Publication number: 20060079734
    Abstract: A guiding apparatus to be used when inserting an airway tube from a mouth of a patient includes a body (A) and an endoscope (B) disposed through the body (A). The body (A) includes a blade (10). The blade (10) is inserted from the mouth of the patient to depress the epiglottis with a distal end portion thereof, exposing the glottis. The endoscope (B) includes an objective end portion (65), an ocular end portion (55) and an image guide (70) optically connecting the objective end portion (65) and the ocular end portion (55). The objective end portion (65) is disposed on the blade (10). The ocular end portion (55) is positioned out of alignment with the blade (10) either to the right or the left behind a rear end of the blade (10).
    Type: Application
    Filed: September 20, 2005
    Publication date: April 13, 2006
    Applicant: Machida Endoscope Co., Ltd.
    Inventor: Kunihiko Miyagi
  • Publication number: 20050288554
    Abstract: An endoscope 10 comprises an insert portion 30 having outer tubing 35, a light guide 31, an image guide 32 and an objective optical member 33. Peripheral side surfaces of these components 31,32,33,35 adjacent to each other are bonded together by an adhesive 36 at a distal end portion of the insert portion 30. The adhesive 36 contains fine particles 36b comprising a roentgenopaque material such as Pt or Au. The adhesive 36 fills among optical fibers 31a inside the light guide 31, thereby roentgenopaque property is conferred not only among the above-mentioned components 31,32,33,35 at the distal end of the insert portion 30 but also on the inside of the light guide 31. This enables the distal end of the endoscope 10 to be traced with X-rays without enhancing the diameter of the insert portion 30. Therefore, the endoscope 10 can easily be inserted into human small vessels such as blood vessels.
    Type: Application
    Filed: June 8, 2005
    Publication date: December 29, 2005
    Applicant: Machida Endoscope Co., Ltd.
    Inventors: Kunihiko Miyagi, Masahiro Inoue
  • Patent number: 6887196
    Abstract: An omnidirectional endoscope device 1 is provided at a distal end part of an insertion section 12 of an endoscope 10 with an omnidirectional light receiving unit 20 for receiving an incident light from all around the periphery in the peripheral direction and reflecting the light toward a relay lens optical system 13. The insertion section 12 slidably pierces through a retaining cylinder 33. A light guide 35 (illumination light transmitting means) is embedded in the retaining cylinder 33, and an outgoing surface at the distal end of this light guide 35 is faced with a distal end face of the retaining cylinder 33. The retaining cylinder 33 can be operated in a sliding manner by a grip 31 disposed at the basal end. By this, the illumination light can strike upon the view field of the omnidirectional light receiving mechanism regardless whether the inside space of an image to be observed is large or small.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: May 3, 2005
    Assignee: Machida Endoscope Co., Ltd.
    Inventors: Minoru Arai, Kunihiko Miyagi
  • Publication number: 20040095464
    Abstract: An observing system(S) for observing a vocal cord(B), as a vibrating object, of a person to be inspected(A) comprises an image-pickup section(1) for picking up an image of the vocal cord(B) at a constant cycle, an extracting section(21a) for extracting a basic frequency of a generated voice, a frequency dividing ratio setting section(26) for variably setting a frequency dividing ratio with respect to the extracted basic frequency, a frequency dividing section(21b) for dividing the basic frequency at the set frequency dividing ratio, a trigger output section(21c) for outputting a trigger signal at the divided frequency, and video image making sections(21d,22) capable of outputting only an image picked up by the image pickup section(1) immediately after the output of each trigger signal.
    Type: Application
    Filed: November 14, 2003
    Publication date: May 20, 2004
    Inventors: Kunihiko Miyagi, Masayuki Misawa
  • Publication number: 20030191369
    Abstract: An omnidirectional endoscope device 1 is provided at a distal end part of an insertion section 12 of an endoscope 10 with an omnidirectional light receiving unit 20 for receiving an incident light from all around the periphery in the peripheral direction and reflecting the light toward a relay lens optical system 13. The insertion section 12 slidably pierces through a retaining cylinder 33. A light guide 35 (illumination light transmitting means) is embedded in the retaining cylinder 33, and an outgoing surface at the distal end of this light guide 35 is faced with a distal end face of the retaining cylinder 33. The retaining cylinder 33 can be operated in a sliding manner by a grip 31 disposed at the basal end. By this, the illumination light can strike upon the view field of the omnidirectional light receiving mechanism regardless whether the inside space of an image to be observed is large or small.
    Type: Application
    Filed: March 20, 2003
    Publication date: October 9, 2003
    Inventors: Minoru Arai, Kunihiko Miyagi
  • Publication number: 20030083550
    Abstract: A bent tube 10 includes joint rings 11 spacedly arranged, side by side, in a row and a connection mechanism 20 which is bridgingly disposed between one of the adjacent joint rings 11 and the other. The connecting mechanism 20 has a pair of hinge members 21, 22 which are rotatably connected around a rivet 23 (rotation axis). The hinge 21 is fixed to a groove 11c (hinge attaching portion) formed in one of the adjacent joint rings 11 by soldering, and the hinge member 22 is fixed to a groove 11c formed in the other joint ring 11 by soldering. By this, caulking operation, which is necessary for connecting the joint rings, can be performed easily.
    Type: Application
    Filed: October 23, 2002
    Publication date: May 1, 2003
    Inventor: Kunihiko Miyagi
  • Publication number: 20030083549
    Abstract: A light source device 20 of an endoscope is provided with a light guide connector 24 for inserting a light guide plug 15. A ball lens 30 (light intensity distribution transforming element) is received in an end portion on a condenser lens 23 side of the light guide connector 24. The ball lens 30 transforms the intensity distribution of a converging flux of light coming from the condenser lens 23 such that the intensity distribution is lowered at the central area and raised at the peripheral area. A ball lens 31 (light arresting element) is received in an end portion of the light guide plug 15. The ball lens 31 arrests the light coming from the ball lens 30 and makes incidence of such arrested light to an incident end face of the light guide 16. Owing to this feature, the inserting operation of the light guide plug can be performed with ease and without a need of strict accuracy.
    Type: Application
    Filed: October 10, 2002
    Publication date: May 1, 2003
    Inventors: Kunihiko Miyagi, Haruo Ito, Masatoshi Nishimura, Masahiro Inoue
  • Patent number: 6461330
    Abstract: A guiding apparatus M comprises a stopper 30 for restricting the depth of insertion of a sheath 10. The sheath 10 is slidingly movably inserting into the stopper 30. Moreover, a lock bar 40, which is generally in orthogonal relation to the sheath 10, is received in the stopper 30. One end portion of the lock bar 40 projects from the stopper 30 and serves as a control portion 41, while the other end portion thereof is provided with slits 42a and serves as a biasing portion 42. A recess 43 for partly receiving therein the sheath 10 is formed in an intermediate section of the lock bar 40. An inner surface of the recess 43 is urged against an outer periphery of the sheath 10 under the effect of the biasing portion 42, thereby locking the stopper 30 to the sheath 10. By pressing the control portion 41 against the force of the biasing portion 42, the stopper 30 is unlocked.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: October 8, 2002
    Assignee: Machida Endoscope Co., Ltd.
    Inventor: Kunihiko Miyagi
  • Patent number: 6074342
    Abstract: A hard endoscope used for assisting a micro-operation includes a body and an insert portion extending from the body. The insert portion includes a first linear portion, and a second linear portion longer than the first linear portion. The first and second linear portions are arranged forwardly in order from the body. A connecting portion is disposed between the first linear portion and the second linear portion. The insert portion thus constructed exhibits a bent configuration. The first and second linear portions have a first and a second relay lens, respectively, therein. The connecting portion has a prism therein. This prism transmits the light coming through the first relay lens to the second relay lens.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: June 13, 2000
    Assignee: Machida Endoscope Co., Ltd.
    Inventors: Kunio Odanaka, Kunihiko Miyagi
  • Patent number: 6048340
    Abstract: A high-frequency treatment device for an endoscope has an elongated piercing portion. A sleeve-like first electrode is disposed at a distal end portion of this piercing portion. A bar-like second electrode is coaxially disposed within the first electrode. A sleeve-like insulative layer is interposed between the first electrode and the second electrode.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: April 11, 2000
    Assignee: Machida Endoscope Co., Ltd.
    Inventor: Kunihiko Miyagi
  • Patent number: 5830126
    Abstract: An endoscope unit includes an endoscope having an insertion portion and a fluid supply instrument mounted on the insertion portion. The fluid supply instrument comprises a thin resilient tube. This resilient tube is intimately attached to an outer periphery of the insertion portion of the endoscope and radially expansible. A supply member is connected to a basal end of the resilient tube. When fluid from this supply member is supplied to the basal end of the resilient tube, the resilient tube is radially expanded and a fluid passage is formed between the resilient tube and the insertion portion of the endoscope. The fluid is discharged from a distal end of the resilient tube.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: November 3, 1998
    Assignee: Machida Endoscope Co., Ltd.
    Inventors: Kunio Odanaka, Kunihiko Miyagi
  • Patent number: 5740965
    Abstract: In an adhesive sprayer for a living body, a hard insert portion extends from a sprayer body, a bendable portion extends from a distal end of the insert portion, and a nozzle portion is disposed on a distal end of this bendable portion. Gas from a gas inlet port formed in the sprayer body is injected from a gas injection port formed in the nozzle portion after passing through a passage which is allowed to extend through the interiors of the sprayer body, insert portion and bendable portion. Adhesive from an adhesive inlet port formed in the sprayer body is injected from an adhesive discharge port formed in the nozzle portion after passing through another passage which is allowed to extend through the interiors of the sprayer body, insert portion, and bending portion. The bending portion is bent by controlling a control member mounted on the sprayer body via a control cable extending through the interiors of the sprayer body, insert portion and bendable portion.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: April 21, 1998
    Assignee: Machida Endoscope Co., Ltd.
    Inventors: Kunihiko Miyagi, Hidetoshi Yoshizawa
  • Patent number: D773663
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: December 6, 2016
    Assignee: Jimro Co., Ltd.
    Inventors: Kunihiko Miyagi, Takashi Sawai
  • Patent number: D774191
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: December 13, 2016
    Assignee: Jimro Co., Ltd.
    Inventors: Kunihiko Miyagi, Takashi Sawai