Kaneka Corporation

Nissan Motor Company Limited

Masahiro Kojima

Satoshi Oku

Masato Tsueda

Takashi Kikuchi

Takashi Ito

Yasuyuki Tanaka

Shintaro Osumi

Yojiro Koga

Yoshinori Nakano

Yusuke Kato

Yoshio Shimoida

Norihisa Waki

Shiho Inoue

Akiko Waki

Yuji Muroya

Masato Kusakabe

Shigeo Ibuka

Ryutaro Mukai

Hiroyuki Ogino

Masami Yanagida

Yasushi Nishikawa

Gentaro Kano

Kazuki Miyatake

Makoto Kutsumizu

Keisuke Wakabayashi

Kohei Ogawa

Seiji Ishimoto

Tomohisa Matsuno

Takahisa Hamabuchi

A method for producing a balloon catheter including preparing a balloon producing device (), the device including a mold () into which a parison () is inserted, and a fixing member () for fixing the parison () outside the mold (), the mold () provided with a rotation preventing portion () abutting the parison () so as to prevent rotation of the parison (), disposing a part of the parison () in the mold (), fixing a portion outside the mold () of the parison () with the fixing member (), expanding the parison (), removing the parison () from the mold (), and cutting the parison ().

Method for producing balloon catheter

Disclosed is a balloon catheter that can prevent or reduce axial rotation and circumferential shift of the elongate body while ensuring good passage of the balloon in the blood vessel. The balloon catheter () has a shaft (); a balloon (); an elongate body () extending along the shaft () and having a body tissue contacting part at its distal end part; and an elongate body lumen (), the elongate body lumen () having a first engagement part () so that axial rotation angle of the elongate body () is 0° to 60°, and the first engagement part () being located between the distal end () of the elongate body lumen () and a position 30 cm from the distal end of the elongate body lumen () toward the proximal side.

Balloon catheter

Provided is a balloon catheter wherein a balloon is less likely to swell in the protective tube during an air leak test of the balloon in a state where the balloon having projecting portions is housed in a lumen of the protective tube. A balloon catheter comprising: a shaft extending in a distal-proximal direction; a balloon disposed on a distal side of the shaft and having, in a contracted state, a plurality of wing-shaped portions; projecting portions each disposed on a portion, of an outer surface of the balloon, that is none of the wing-shaped portions; and a protective tube having a lumen in which the balloon is disposed, wherein none of the wing-shaped portions is present between an apex of each projecting portion and a point, on an inner surface of the protective tube, that is at a shortest distance from the apex of the projecting portion.

Provided is a balloon catheter wherein a balloon is less likely to swell in the protective tube during an air leak test of the balloon in a state where the balloon having projecting portions is housed in a lumen of the protective tube. A balloon catheter contains: a shaft extending in a distal-proximal direction; a balloon having wing-shaped portions; projecting portions disposed on an outer surface of the balloon; and a protective tube in which the balloon is disposed, wherein, in a cross section perpendicular to the distal-proximal direction at a midpoint of a length in the distal-proximal direction of the protective tube, a distance from a centroid of the protective tube through an apex of each projecting portion to an inner surface of the protective tube is longer than a distance from the centroid through none of the projecting portions to the inner surface of the protective tube.

A method for manufacturing a balloon catheter including preparing a tubular parison () made of a resin and a mold () that has an inner cavity into which the parison () is to be inserted and that has a first groove () formed on an inner wall surface forming the inner cavity; inserting the parison () into the inner cavity of the mold (); allowing the resin to enter the first groove () by introducing a fluid into a lumen () of the parison () to expand the parison (); and removing the parison () from the mold () before the resin reaches a bottom () of the first groove ().

Balloon for balloon catheter and method for manufacturing balloon catheter

A film includes a film body including graphite, and at least one fragment including graphite and formed on one or more surfaces of the film body. The film has a water contact angle of 50 degrees or greater and a glossiness of 20 or lower.

Graphite film, laminate film, method for producing same, and electrode material

A current collector for a battery includes: a layer () formed from an electrically conductive material and at least one of (a) a polymer compound having an alicyclic structure, (b) a saturated hydrocarbon polymer compound having a hydroxyl group, (c) a phenoxy resin and an epoxy resin, and (d) an amine having an amine equivalent of 120 g/eq or less and an epoxy resin; a layer () which is formed on at least one surface of the layer (); and a layer () formed from an electrically conductive material. The current collector for a battery has stability to an equilibrium potential environment in a negative electrode, a low electric resistance, a blocking property to solvent in electrolytic solution, and a blocking property to a component in an electrolyte. In addition, the current collector for a battery has a high capacity retention rate, and battery durability is improved.

Current collector for battery and battery using same

A conductive film includes a layer 1 formed by a conductive material 1 that includes a polymer material 1 containing any of (1) an amine and an epoxy resin (where the epoxy resin and the amine are mixed in a ratio of 1.0 or more in terms of the ratio of the number of active hydrogen atoms in the amine with respect to the number of functional groups in the epoxy resin), (2) a phenoxy resin and an epoxy resin, (3) a saturated hydrocarbon polymer having a hydroxyl group, and (4) a curable resin and an elastomer and conductive particles 1. The conductive film has excellent stability in an equilibrium potential environment in a negative electrode and low electric resistance per unit area in the thickness direction. A multilayer conductive film including the conductive film achieves excellent interlayer adhesion, and using them as a current collector enables the production of a battery satisfying both weight reduction and durability.

Conductive film, current collector using same, battery and bipolar battery

A multilayer conductive film includes a layerincluding a conductive material containing a polymer materialhaving an alicyclic structure and conductive particlesand a layerincluding a material having durability against positive electrode potential. The multilayer conductive film has stability in an equilibrium potential environment in a negative electrode and stability in an equilibrium potential environment in a positive electrode, has low electric resistance per unit area in the thickness direction, and has excellent barrier properties for a solvent of an electrolytic solution. A battery including a current collector employing the multilayer conductive film can achieve both weight reduction and durability.

Multilayer conductive film, current collector using same, battery and bipolar battery

A collector for bipolar lithium ion secondary batteries comprises a first conductive layer that is obtained by adding a conductive filler to a base that contains an imide group-containing resin, and a second conductive layer that has a function of blocking lithium ions. The second conductive layer comprises a blocking resin layer that is obtained by adding a conductive filler to a base that contains a resin which contains no imide group, and a metal layer. This collector for bipolar lithium ion secondary batteries is used in such a manner that the first conductive layer is on the positive electrode active material layer side with respect to the second conductive layer.

Growing community of inventors

Settsu, Japan

Masahiro Kojima