Olympus Corporation

Nkk Corporation

Kazushi Ishiyama

Kenichi Arai

Akio Uchiyama

Hironao Kawano

Isao Aoki

Shin Yabukami

Masahiko Sendoh

Takeshi Yokoi

Yasushi Tanaka

Misao Namikawa

Akira Hiura

Hironobu Takizawa

Masahiko Sendou

Akio c/o Olympus Medical Systems Corp Uchiyama

Masahiko c/o Olympus INTPROPERTY Services Sendou

Hironao c/o Olympus Medical Systems Corp Kawano

A detecting system of the position and the posture of a capsule medical device includes a main body of the capsule medical device that is inserted in a living body, a coil in a capsule that is arranged to the main body of the capsule medical device and forms a resonant circuit, a magnetic field generating device that is arranged around the living body and generates the Alternating magnetic field for generating an induced magnetic field in the coil in the capsule, and a plurality of magnetic field detecting devices that detect the strength of the induced magnetic field generated by the coil in the capsule by the magnetic field generated by the magnetic field generating device.

Detecting system of position and posture of capsule medical device

The present invention realizes a medical device guidance system capable of improving propulsion control characteristic. The capsule guidance systemincludes a rotating electromagnetic field generating devicefor generating a rotating electromagnetic field for applying from the outside of a subject into the subject; a capsuleto be inserted into the body cavity of the subject; a magnetprovided in this capsuleand acting on the rotating electromagnetic field generated by the rotating electromagnetic field generating device; a spiral projection portionprovided on the outer peripheral surface of the capsuleand converting the rotational movement generated by the magnetinto a thrust; a controllerfor controlling the rotating electromagnetic field generating deviceto continuously change the state of the rotating electromagnetic field generated by rotating electromagnetic field generating device; and a capsule rotational direction pattern generatorfor interchanging the rotational directions of the rotating electromagnetic field generated by the rotating electromagnetic field generating devicefor each set rotational direction.

Medical device guidance system

In a capsuleas a medical apparatus inserted into a body cavity, the lengthwise direction of the capsuleis used as an insert axis, a manipulation/input device, which is magnetized in a direction orthogonal to the insert axis, is disposed at the center position of the insert axis. A magnetic field generation device, which is disposed outside of a body, is caused to generate a vibration magnetic field in a direction parallel with the insert axis of the capsuleby turning on a vibration (ON/OFF) switchof a manipulation/input deviceso that couples having lines of action, which are in parallel with the insert axis, are exerted on the capsule, thereby the capsuleexecutes a swiveling motion about the insert axis and smoothly travels along a cavity organ.

Medical apparatus, medical apparatus guide system, capsule type medical apparatus, and capsule type medical apparatus guide apparatus

A capsule medical apparatus inserted in the body cavity includes a spiral projected portion on the outer peripheral surface of a body cavity inserting portion. The pitch, height, and cross section of the projected portion and the like are set to have proper values and shapes suitable to the advance thereof. The body cavity inserting portion has a magnet. An external magnetic guiding device applies a rotating magnetic field to the magnet and the magnetic torque acts on a magnet for rotation. Thus, the medical apparatus stably advances.

Medical device

The present invention provides a method of manufacturing a silicon steel sheet having grains precisely arranged in the Goss orientation, comprising the steps of preparing a steel material containing 0.01 wt % or less of C, 2.5 to 7.0 wt % of Si, 0.01 wt % or less of S, 0.01 wt % or less of Al, 0.01 wt % or less of N, subjecting the steel material to hot rolling maintained 1000.degree. C. or higher such that the temperature of the rolled material at an end of the hot rolling step falls within the range of 700.degree. to 950.degree. C., subjecting the steel material to a primary cold rolling process at a rolling reduction of 30 to 85%, annealing the steel material at a temperature of 600.degree. to 900.degree. C., subjecting the steel material to a secondary cold rolling process at a rolling reduction of 40 to 80%, annealing the steel material again at a temperature of 600.degree. to 900.degree. C., subjecting the steel material to a tertiary cold rolling process at a rolling reduction of 50 to 75%, and annealing the steel material in a reducing atmosphere, or in a non-oxidizing atmosphere having an oxygen partial pressure of 0.5 Pa or less, or in a vacuum having an oxygen partial pressure of 0.5 Pa or less, at a temperature in the range of 1000.degree. to 1300.degree. C.

Method of manufacturing silicon steel sheet having grains precisely

The present invention provides a method of manufacturing a silicon steel sheet having grains precisely arranged in the Goss orientation, comprising the steps of preparing a steel material containing 0.01 wt. % or less of C, 2.5 to 7.0 wt. % of Si, 0.01 wt. % or less of S, 0.01 wt. % or less of Al, 0.01 wt. % or less of N, subjecting the steel material to hot rolling maintained 1000.degree. C. or higher such that the temperature of the rolled material at an end of the hot rolling step falls within the range of 700 to 950.degree. C., subjecting the steel material to a primary cold rolling process at a rolling reduction of 30 to 85%, annealing the steel material at a temperature of 600.degree. to 900.degree. C., subjecting the steel material to a secondary cold rolling process at a rolling reduction of 40 to 80%, annealing the steel material again at a temperature of 600.degree.to 900.degree. C., subjecting the steel material to a tertiary cold rolling process at a rolling reduction of 50 to 75%, and annealing the steel material in a reducing atmosphere, or in a non-oxidizing atmosphere having an oxygen partial pressure of 0.5 Pa or less, or in a vacuum having an oxygen partial pressure of 0.5 Pa or less, at a temperature in the range of 1000.degree. to 1300.degree. C.

Growing community of inventors

Sendai, Japan

Kazushi Ishiyama