Patents Assigned to Asahi Intecc Co., Ltd.
  • BALLOON CATHETER
    Publication number: 20200238057
    Abstract: A balloon catheter comprises a balloon, an outer tube connected to a proximal end of the balloon, an inner tube disposed inside the outer tube and having a distal end attached to a distal end of the balloon, a protruded-depressed portion formed on an outer periphery of the inner tube, and a core wire disposed between the outer tube and the inner tube. The core wire has a bulged portion sandwiched between the outer tube and a depressed portion of the protruded-depressed portion. The balloon catheter can transmit a force from the core wire to both the outer tube and the inner tube regardless of whether the force is generated by pushing or pulling a proximal end portion of the balloon catheter. Additionally, the core wire can move appropriately to maintain the flexibility of the balloon catheter even when the balloon catheter bends.
    Type: Application
    Filed: April 15, 2020
    Publication date: July 30, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Takeharu KATSURADA, Takeshi MOGI
  • GUIDE WIRE
    Publication number: 20200238054
    Abstract: A guide wire of the present disclosure includes a core shaft having a distal end portion decreasing in diameter, a coil body wound to cover the distal end portion, and a distal end fixing portion fixing the core shaft and the coil body to each other. The distal end portion includes a small diameter portion, a large diameter portion, and a tapered portion between the small diameter portion and the large diameter portion. The core shaft and the coil body are fixed at a portion excluding the tapered portion. A first bending rigidity FR1 of the large diameter portion, a second bending rigidity FR2 of the small diameter portion, and a length L of the tapered portion satisfy the following expressions (1) and (2). In the following expressions (1) and (2), the unit of L is mm (millimeter).
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Kenta TSUGE
  • Catheter and balloon catheter
    Patent number: 10722682
    Abstract: A catheter includes an inner layer, a reinforcement layer at least partially inside the inner layer or on an outer periphery of the inner layer, and an outer layer covering the inner layer and the reinforcement layer. The reinforcement layer has a wire wound so that a gap is present between adjacent portions of the wire. The inner layer has an uneven outer peripheral surface on which a protruded portion is formed in a location of the wire, and in which a depressed portion is formed in a location of the gap. The outer layer has a protrusion part that extends into the depressed portion of the inner layer, the protrusion part entering deeper than the reinforcement layer through the gap and extending in an axial direction of the catheter. The outer layer is not easily detached from the inner layer.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: July 28, 2020
    Assignee: ASAHI INTECC CO., LTD.
    Inventors: Yuta Kubo, Moritaka Ogido, Takeharu Katsurada
  • CONNECTION STRUCTURE AND GUIDE WIRE HAVING THE CONNECTION STRUCTURE
    Publication number: 20200179658
    Abstract: A connection structure includes a multi-thread coil formed by winding first metal element wires formed of a first metal and second metal element wires formed of a second metal arranged between a first metal body including the first metal and a second metal body including the second metal. The first metal body is connected to the first metal element wires of the multi-thread coil, and the second metal body is connected to the second metal element wires of the multi-thread coil. The connection structure imparts improved flexibility to the connection between the first and second metal bodies, and an appropriate connection can be provided even when the first and second metal bodies are made of dissimilar metals.
    Type: Application
    Filed: February 13, 2020
    Publication date: June 11, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Satoshi YONEZAWA
  • GUIDE WIRE
    Publication number: 20200171279
    Abstract: A guide wire that includes a core shaft, a coil wound around the core shaft, a distal-end joining region to which a distal end of the core shaft and a distal end of the coil are joined, and a proximal-end joining region to which a proximal end of the core shaft and a proximal end of the coil are joined, and the coil has a sparsely wound portion having a sparser coil pitch than other portions of the coil, the sparsely wound portion being disposed between the distal-end joining region and the proximal-end joining region.
    Type: Application
    Filed: February 6, 2020
    Publication date: June 4, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Hiroshi KOBAYASHI, Tomomi INOUE, Sho KUBOTA
  • GUIDE WIRE
    Publication number: 20200164183
    Abstract: A guide wire that includes a core shaft that is made of a first material, a coil that is provided to cover an outer periphery of the core shaft and is formed by twisting a first wire made of the first material and a plurality of second wires made of a second material different from the first material, and a distal end joint that joints a distal end of the core shaft and a distal end of the coil, and the distal end joint is made of the first material and is continuous from the distal end of the core shaft and the distal end of the first wire, and the distal end joint wraps the distal ends of the plurality of second wires.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 28, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Tadahiro KOIKE
  • CATHETER
    Publication number: 20200155805
    Abstract: A catheter includes a catheter shaft and a tip made of a resin. The catheter shaft has a coil body having a first portion with a first inner diameter, a tapered portion disposed at a distal end of the first portion and having a diameter decreasing from the first inner diameter to a second inner diameter and arranged in the inside of the tip; an inner layer covering an inner peripheral surface of the first portion; and an outer layer covering an outer peripheral surface of the first portion. The tip has an outer-layer joining region joined to a distal end of the outer layer, and an inner-layer joining region joined to a distal end of the inner layer. A gap is disposed between adjacent wires of the coil body at the tapered portion, and the outer-layer joining region is integrated with the inner-layer joining region through the gap.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Kei SUGAWARA
  • JUNCTION STRUCTURE AND CATHETER HAVING THE JUNCTION STRUCTURE
    Publication number: 20200155797
    Abstract: Provided is a junction structure between a first tubular member and a second tubular member, and a catheter including the junction structure. An interface between the first tubular member and the second tubular member has an uneven shape in the longitudinal direction of the junction structure along a circumferential direction of the first tubular member and the second tubular member. At least one of the first tubular member and the second tubular member includes a protruding portion that protrudes into the other tubular member only between an inner periphery of the other tubular member and an outer periphery of the other tubular member. The joining strength of the junction structure is improved against a pressure in the radial direction.
    Type: Application
    Filed: January 27, 2020
    Publication date: May 21, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Yusuke SHIMIZU
  • CATHETER ASSEMBLY
    Publication number: 20200155813
    Abstract: Disclosed herein is a catheter comprising an outer shaft; and an inner shaft that is disposed inside the outer shaft, wherein the inner shaft includes: a first shaft part that is made of a first resin, a second shaft part that is made of a second resin, harder than the first resin, and provided on a proximal end of the first shaft part, and a large diameter portion that is provided between the first shaft part and the second shaft part so that a proximal end portion of the first shaft part and a distal end portion of the second shaft part overlap and has an outer diameter larger than an outer diameter of the first shaft part and an outer diameter of the second shaft part, and the large diameter portion includes a joint part joining the outer shaft and the inner shaft to each other.
    Type: Application
    Filed: January 23, 2020
    Publication date: May 21, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Akihiro MIKI
  • Balloon catheter
    Patent number: 10653869
    Abstract: A balloon catheter comprises a balloon, an outer tube connected to a proximal end of the balloon, an inner tube disposed inside the outer tube and having a distal end attached to a distal end of the balloon, a protruded-depressed portion formed on an outer periphery of the inner tube, and a core wire disposed between the outer tube and the inner tube. The core wire has a bulged portion sandwiched between the outer tube and a depressed portion of the protruded-depressed portion. The balloon catheter can transmit a force from the core wire to both the outer tube and the inner tube regardless of whether the force is generated by pushing or pulling a proximal end portion of the balloon catheter. Additionally, the core wire can move appropriately to maintain the flexibility of the balloon catheter even when the balloon catheter bends.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: May 19, 2020
    Assignee: ASAHI INTECC CO., LTD.
    Inventors: Takeharu Katsurada, Takeshi Mogi
  • Catheter and balloon catheter
    Patent number: 10653858
    Abstract: A catheter includes a tubular inner layer, a reinforcement body disposed around the outer periphery of the inner layer, a protective layer covering the outer periphery of an end of the reinforcement body, and an outer layer covering at least the outer periphery of the protective layer. The protective layer covers the outer periphery of at least one end of reinforcement body, and the end of the reinforcement body covered with the protective layer is buried deeper in a side of the inner layer relative to a portion of the reinforcement body not covered with protective layer. The reinforcement body is prevented from lifting away from the inner layer when the catheter is bent even without increasing the outer diameter of the reinforcement body.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: May 19, 2020
    Assignee: ASAHI INTECC CO., LTD.
    Inventors: Yuta Kubo, Takeharu Katsurada, Moritaka Ogido
  • CATHETER
    Publication number: 20200129730
    Abstract: A catheter that includes a tubular inner layer, a first reinforcing body that is wound around an outside in a radial direction of the inner layer, a second reinforcing body that is wound around the outside in the radial direction of the first reinforcing body, and an outer layer that covers the inner layer, the first reinforcing body, and the second reinforcing body, and the inner layer has a reduced diameter portion that is reduced in diameter from a proximal end side of the catheter toward a distal end side of the catheter on an inner peripheral surface of the inner layer, and a thickness of the outer layer between the first reinforcing body and the second reinforcing body is increased, at least partially from the proximal end side toward the distal end side, in the radial direction of the reduced diameter portion.
    Type: Application
    Filed: December 30, 2019
    Publication date: April 30, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Masatomo ISHIKAWA
  • CATHETER
    Publication number: 20200129736
    Abstract: A catheter that includes a catheter shaft including an inner layer, a coil body that is formed of a wire spirally wound around an outer periphery of the inner layer, and an outer layer that covers the coil body, and the coil body includes a joint part where adjacent wires are jointed, and a main body part other than the joint part, the joint part is positioned closer to a distal end side of the catheter shaft than the main body part, the joint part has a slit that is a notch passing through the joint part in a radial direction of the catheter, one end of the slit is located closer to the distal end side than the other end of the slit, and between the wires included in the joint part, all parts except a part overlapping the slit are jointed.
    Type: Application
    Filed: December 27, 2019
    Publication date: April 30, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Toshio MORIMOTO
  • CATHETER
    Publication number: 20200121332
    Abstract: A catheter includes a first hollow shaft made of a first material, a second hollow shaft made of a second material, a mesh member with a tubular shape configured to expand and contract in a radial direction, a front end tip, and a core wire. The core wire extends inside the mesh member, inside a lumen of the second hollow shaft, and inside a lumen of the first hollow shaft. The core wire has a front end side small-diameter portion and a large-diameter portion. The large-diameter portion has an outer diameter larger than an outer diameter of the front end side small-diameter portion, and is located on the base end side relative to the front end side small-diameter portion. At least a portion of the large-diameter portion is located in the lumen of the second hollow shaft in a state where the mesh member remains contracted radially.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 23, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventor: Yuta NAKAGAWA
  • ULTRA-SMALL AND HIGH-SENSITIVITY MAGNETIC SENSOR
    Publication number: 20200124686
    Abstract: A magnetic sensor comprising: an application specific integrated circuit (ASIC); an insulating protective film formed on a surface of the ASIC; a substrate film formed on the insulating protective film; and a magnetic field detection element formed on the substrate film, the magnetic field detection element including two magnetic wires on the substrate film, a detection coil surrounding the two magnetic wires, two electrodes coupled to the two magnetic wires for wire energization, and two electrodes coupled to the coil for coil voltage detection.
    Type: Application
    Filed: December 19, 2019
    Publication date: April 23, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Yoshinobu HONKURA, Shinpei HONKURA, Kazue KUDO, Junichi TANABE, Eiki KIKUCHI
  • CATHETER
    Publication number: 20200121890
    Abstract: A catheter includes a hollow shaft, a mesh member, a front end tip, and a core wire. The mesh member has a tubular shape, has a base end joined to a front end of the hollow shaft, and is configured to expand and contract in a radial direction. The front end tip is joined to a front end of the mesh member. The core wire has a front end portion joined to the front end tip and extends inside the mesh member and inside the hollow shaft. A base end of the core wire is located on a base end side of the catheter relative to a base end of the hollow shaft. The front end portion of the core wire is formed with one or more holes, and a portion of the front end tip is disposed inside at least a portion of the one or more holes.
    Type: Application
    Filed: October 18, 2019
    Publication date: April 23, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Yuta NAKAGAWA, Keisuke KAWAGUCHI
  • MAGNETIC TYPE AZIMUTH/POSITION MEASUREMENT DEVICE
    Publication number: 20200124396
    Abstract: A magnetic type azimuth/position measurement device is disclosed, comprising: a plurality of coils driven by circuitry, the circuitry and coils configured to selectively generate a uniform magnetic field and an inclined magnetic field in a three-dimensional space; a uniaxial magnetic field sensor configured to measure a strength of a magnetic field formed by the plurality of coils driven by circuitry; and arithmetic operation circuitry configured to receive signals representative of the strength of the magnetic field from the uniaxial magnetic field sensor and calculate a position and an azimuth of the uniaxial magnetic field sensor in the three-dimensional space.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 23, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Yoshinobu HONKURA, Shinpei HONKURA
  • CATHETER
    Publication number: 20200121336
    Abstract: Provided is a catheter including a hollow shaft, a mesh member having a tubular shape joined to a distal end side of the hollow shaft and capable of radially expanding and contracting, an expanding and contracting functional portion for radially expanding and contracting the mesh member, a distal-end fixed member joined to a distal end side of the mesh member, and a connector joined to a proximal end side of the hollow shaft. The connector is configured to attach to an aspirator, the aspirator being for applying negative pressure in the inside of the hollow shaft.
    Type: Application
    Filed: September 11, 2019
    Publication date: April 23, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Toshihiko TSUKAMOTO, Masaaki NIHONMATSU
  • ULTRA HIGH-SENSITIVITY MICRO MAGNETIC SENSOR
    Publication number: 20200116803
    Abstract: A magnetic sensor, comprising: a substrate having a groove; two conductive magnetic wires for magnetic field detection arranged adjacent and substantially parallel to one another and at least partially recessed in the groove on the substrate, the two conductive magnetic wires electrically coupled at one end; a coil surrounding the two magnetic wires; two electrodes coupled to the two conductive magnetic wires for wire energization; and two electrodes coupled to the coil for coil voltage detection.
    Type: Application
    Filed: December 16, 2019
    Publication date: April 16, 2020
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Yoshinobu HONKURA, Shinpei HONKURA
  • Balloon catheter
    Patent number: 10617855
    Abstract: A balloon catheter includes a balloon, an inner shaft, an outer shaft, and a reinforcing member that includes a protruded part that contacts with an inner surface of the outer shaft and an outer surface of the inner shaft. A pushing force of an operator can be evenly transmitted to the outer shaft and the inner shaft from the distal end of the reinforcing member, reducing a relative displacement of the outer shaft and the inner shaft.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: April 14, 2020
    Assignee: ASAHI INTECC CO., LTD.
    Inventors: Manabu Shimogami, Takeharu Katsurada