Seidensha Electronics Co., Ltd.

Kimihiko Watanabe

Eiji Kaneko

Yoshiyuki Sugawara

Hirotoshi Fuse

Takakazu Tomizawa

Naokazu Nagasawa

Yoshio Fukamatsu

A laser welding apparatus is provides that includes: a support member including a heat generation portion which has a size that is limited to correspond to a size of a welding area of a plurality of plastic components and is made from a material that absorbs a laser beam and generates heat, and which generates heat of a temperature that is equal to or greater than a melting temperature of the plastic components; a laser beam irradiation unit for converging a laser beam to be transmitted through the plurality of plastic components, and irradiating the laser beam toward the heat generation portion through the plurality of plastic components; and a welding controller for causing a laser beam to be irradiated at the heat generation portion using the laser beam irradiation unit to thereby cause the heat generation portion to generate heat, and welding abutting faces of a welding area of the plurality of plastic components with heat that is generated.

Laser welding apparatus and laser welding method

To provide a balloon catheter and an apparatus and method for manufacturing the balloon catheter, whereby the degree of welding can be appropriately adjusted and the balloon catheter can be formed so as to have a desired surface profile suitable for various uses including medical use. With a shaftinserted through a catheter tubeinserted into an end portionof a balloon and also with a pressure tubefitted around a welding section where the end portionof the balloonis lapped over the catheter tube, the shaftis heated by emitting laser light from a laser radiation unitto the welding section while the shaftis rotated by a chuck, to weld the welding section.

Balloon catheter, balloon catheter manufacturing device, balloon catheter manufacturing method, catheter connection device, catheter connection method, and connected catheter

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Tokyo, Japan

Kimihiko Watanabe