Olympus Corporation

Olympus Medical Systems Corporation

Mitsubishi Hitachi Power Systems, Ltd.

Hitachi, Ltd.

Tomoaki Yamashita

Toru Shinmura

Kenji Hirose

Satoshi Otsuka

Kenichi Hattori

Masaaki Ueda

Seiji Sakai

Kenichi Tomita

Yukihiro Yamamoto

Makoto Hemmi

Kengo Iwashige

Masahiro Kawauchi

Tateki Nakamura

Takahiko Mitani

Takayasu Tanaka

Hisao Isobe

Norio Takeda

Seiji Iwasaki

Yosuke Tanabe

Yasunori Shigenaga

Kenichi Tohrisawa

Kenji Omachi

Yuichi Wataya

Akira Muramatsu

Yuuya Ishida

Gakuji Higuchi

Makoto Henmi

There are provided a rolling bearing fatigue state prediction device and a rolling bearing fatigue state prediction method capable of highly accurately predicting a fatigue state of a rolling bearing even when a direction of a load applied to a rolling bearing changes. A rolling bearing fatigue state prediction device includes a load measurement unit for determining a magnitude and a direction of a bearing load applied to a rolling bearing supporting a rotating body, a load applied region identification unit for identifying a region to which a load is applied in a circumferential region of the rolling bearing, and a fatigue state prediction unit for predicting a fatigue state of the rolling bearing based on the obtained magnitude of the load and the identified load applied region.

Rolling bearing fatigue state prediction device and rolling bearing fatigue state predicting method

A hydro dynamic bearing device comprising an upper half of a main bearing and a lower half of the main bearing, wherein the upper half of the main bearing is lined with a low-strength metal such as a Babbitt metal, wherein a circumferential groove is formed in the lower half of the main bearing, and wherein the low-strength metal of the upper half of the main bearing, which is formed at a region opposed to a downstream side of the circumferential groove formed in the lower half of the main bearing, is partially removed to cause a high-strength bearing base metal to be partially exposed.

Hydro dynamic bearing device

An electronic endoscope apparatus includes: an image pickup apparatus mounted at a distal end portion of an insertion portion; an operation portion provided consecutively at the insertion portion, with a frame member incorporated therein; and an electrical cable extended from the operation portion for connection with an external device. In the electronic endoscope apparatus, the frame member has a circuit board portion which establishes electrical connection between shields of the insertion portion and the electrical cable, and on which various electronic parts for exchanging signals with the image pickup apparatus are mounted. In spite of the arrangement of the image pickup apparatus that can acquire high-quality images at a distal end portion of the insertion portion, a size of the apparatus, in particular, a diameter of the insertion portion, can be prevented from being increased.

Electronic endoscope apparatus

An image pickup apparatus of the present invention varies optical properties by moving a part of lenses of an objective lens, and includes a solid-state image pickup device unit that is disposed at a rear-end section and that subjects a subject image to photoelectric conversion, a fixed lens frame that retains the objective lens that is disposed in front of the solid-state image pickup device unit, a movable lens frame that retains the part of lenses that moves along a photographing optical axis O inside the lens frame, and an actuator having one end connected to the movable lens frame and that moves the movable lens frame forward and backward. The actuator includes a rigid member provided so as to extend to the vicinity of the rear end at which the solid-state image pickup device unit is disposed and a shape memory alloy that is coupled to the rigid member.

Image pickup apparatus, electronic endoscope, and lens unit

A medical instrument holding apparatus includes a supporting mechanism, a moving mechanism, a basal portion and a counterweight. The supporting mechanism supports a medical instrument. The moving mechanism which has first and second sides, and a shaft portion located between the first and second sides. The moving mechanism supports the supporting mechanism, allowing the medical instrument and the supporting mechanism to be moved around the shaft portion. The basal portion is coupled to the shaft portion. The basal portion supports the moving mechanism, allowing the moving mechanism to rotate around the shaft portion. The counterweight is located on the second side of the moving mechanism. The counterweight generates a first rotation moment being smaller than a second rotation moment generated from the weights of the medical instrument and the supporting mechanism and acting around the shaft portion in the opposite direction to the second rotation moment.

Medical instrument holding apparatus

An endoscope is connected optically removably to a TV camera through an adapter. A plurality of fixing pins is arranged on both sides of an insertion axis of an insertion part of the endoscope. A fixing unit to fix the endoscope removably is provided at the front end of an arm unit of an endoscope holder which supports the endoscope movably. The fixing unit has a claw and a movable claw, and grips the fixing pins of the endoscope releasably between the claw and the movable claw.

Endoscopic observation apparatus and medical device holder

An operation system and a connecting adapter are provided. The operation system includes an operation microscope, an external device connectable to the operation microscope, and a connecting adapter for electrically connecting the operation microscope and the external device without bringing the operation microscope and the external device into contact with each other, which maintains a state of sterilization of the external device.

Operation system and mounting device for external device for use in the operation system

Growing community of inventors

Tokyo, Japan

Tomoaki Yamashita