Sumitomo Bakelite Company Limited

Yokowo Mfg. Co., Ltd.

Hideaki Asai

Akira Kawamata

Hirokuni Arai

Makoto Kobayashi

Shinetsu Harata

Haruhiko Masuda

Etsuro Yamabe

Shinichi Haruyama

Kiyoaki Honma

Yoshiki Toyota

Chika Shiga

An anti-leak valve unit is removably attached to a base end portion of an overtube through which an endoscope is removably insertable. The anti-leak valve unit includes a frame portion attachable to the overtube, a fitting device on the frame portion that is removably engageable with the base end portion, and a valve element provided inside the frame portion. The frame portion and the fitting device can be embodied as first through third interconnected covers and first and second members attached to the first cover at edges thereof. The valve element can be embodied as a flexible member with an annular endoscope insertion port in a flexible elastic portion thereof.

Anti-leak valve unit for overtube

Endoscope hood

A coronary artery bypass grafting device includes a plurality of attachment members each having: a flexible tube (); a suction cup portion () provided in a tip end side of the flexible tube (); a three-way cock () provided in the flexible tube (); and a holding member () that holds the flexible tube (). At least one of the attachment members further includes a duckbill valve () provided in the flexible tube ().

Coronary artery bypass grafting device

An instrument for coronary artery bypass graft surgery has at least three sets of suction units, respectively provided with a flexible tube; a suction head disposed at an end portion of the flexible tube; a three-way cock mounted on the flexible tube; and a retainer which retains the flexible tube.

Instrument for coronary artery bypass graft surgery

An antenna device shared by three different waves has a single two-stage collinear antenna constituted by half-wave dipole antennas which are adapted for a vehicle telephone signal and are stacked one upon the other. The device allows an AM-FM radio receiver to receive AM and FM broadcast signals via a first coaxial cable and a vehicle telephone transceiver to receive a telephone signal via a second coaxial cable. A first impedance converting circuit is implemented as a field effect transistor and connected to the base end of the antenna for matching the antenna and the first coaxial cable in the event of reception of the AM broadcast signal. A second impedance converting circuit matches the antenna and the first coaxial cable at the time of reception of the FM broadcast signal. The impedance converting circuits convert the input/output impedances of the AM and FM signals. The antenna has an antenna rod extending from the base end thereof, a feed tube electrically connected to the antenna rod, and an adjusting feed tube electrically connected to the feed tube and slidably mounted at one end thereof to one the terminating end of the feed tube, and formed with a feed point at the other end. The adjusting feed tube is adjustable in position in its sliding direction to adjust the input/output impedance of the telephone signal as measured at the feed point.

Antenna device shared by three kinds of waves

Growing community of inventors

Akita, Japan

Hideaki Asai