Sumitomo Electric Industries, Limited

Shin-ichiro Niwa

Takafumi Uemiya

Ichiro Sogawa

Koro Yotsuya

Shin-ichi Kanazawa

Akira Nishimura

Yutaka Shibata

Yoshitaka Osawa

Atsushi Uno

Toshihiko Kishimoto

Yoshitaka Ohsawa

Multiple compartment balloon catheter

A laser beam guiding fiber comprising, in a tip portion of an optical fiber, an oscillating member which oscillates the tip of the optical fiber along a direction which intersects an axis of the optical fiber can irradiate a wide range with laser beam, since the tip of the optical fiber oscillates by means of the oscillating member along the direction which intersects the axis of the optical fiber and the irradiated position with the laser beam reciprocates periodically with the oscillation.

Laser beam guiding fiber assembly

A method of extracting a particular nucleic acid fragment containing a nucleic acid sequence of interest from a nucleic acid or nucleic acids mixture, comprising the steps of:

Method of extracting particular nucleic acid fragment

Optical fiber for laser beam guiding for cure

A diagnostic and therapeutic catheter accommodating a plurality of optical fibers and tubes, including a small diameter portion formed at a distal end portion of the catheter, the small diameter portion having at least one duct, the optical fibers and the tubes confronting an inlet of the small diameter portion so as to be retractably inserted into the small diameter portion selectively.

Diagnostic and therapeutic catheter

Method and apparatus for intravascular laser surgery

Laser operating device for intracavitary surgery

An elastomeric optical waveguide comprising a core and a cladding surrounding the core in which at least the core comprises an elastomer to which elasticity is imparted by irradiation of a radioactive ray, which has low attenuation of light transmission.

Elastomeric optical waveguide with core and cladding imparted with

A cross-linked optical siloxane polymer having a group for modifying a refractive index of the polymer which is introduced in a side chain of the polymer by a hydrosilyl reaction of one of the following systems: (1) a compound (A) having a carbon-carbon unsaturated bond and a group for modifying a refractive index, and a siloxane polymer (B) having a silicon hydride group wherein the molar ratio of the silicon hydride group to the carbon-carbon unsaturated bond is more than 1, and (2) a compound (A') having a silicon hydride group and a group for modifying a refractive index, and a siloxane polymer (B') having a carbon-carbon unsaturated bond wherein the molar ratio of the carbon-carbon unsaturated bond to the silicon hydride group is more than 1, the polymer being cross-linked by a hydrosilyl reaction of the unreacted silicon hydride groups of the silixane polymer (B) with a compound (C) having at least two carbon-carbon unsaturated bonds when the system (1) is used, or by a hydrosilyl reaction of the unreacted carbon-carbon unsaturated bonds of the siloxane polymer (B') with a compound (C') having at least two silicon hydride groups when the system (2) is used, the refractive index of which is easily and precisely modified.

Cross-linked optical siloxane polymer

An optical element integrated optical waveguide comprising (1) a polymeric supporting member a length of which lies in a light transmission direction and which has at least one bore along its entire length, (2) at least one optical waveguide part consisting of organic siloxane polymer filling at least one bore, and (3) at least one optical element embedded in the optical waveguide part is provided.

Optical element integrated optical waveguide and production of the same

An optical sensor which comprises an optical waveguide comprising a cladding and an optical waveguide member made of a transparent elastomer which is surrounded by the cladding and through which light is propagated, wherein an amount of light to be propagated through the waveguide member is changed according to a degree of elastic deformation of the waveguide member, which is not affected by electrical and/or magnetic fields.

Optical sensor

An elastomeric optical fiber comprising a core made of an elastomer with rubbery elasticity and a cladding surrounding the core and having low attenuation of light transmission is produced by a method comprising flowing down a liquid polymer for the core with cross-linking it, and simultaneously with or after the formation of the core, providing the cladding around the core.

Growing community of inventors

Osaka, Japan

Shin-ichiro Niwa