Olympus Optical Company, Ltd.

Organo Corporation

Kouji Tanikawa

Fumihiko Matsuda

Takayuki Masuda

Kikuzo Kaneko

Kohei Sato

Yoshito Ichikawa

Satoshi Takemoto

Yutaka Takahashi

Kazuhiro Takahashi

Masahide Kanno

Akira Taniguchi

Akinobu Uchikubo

Kenji Noda

Kuniaki Kami

Koichi Matsui

Mamoru Kaneko

Naomi Sekino

Yutaka Yanagawa

Kenji Harano

Akihiro Taguchi

Makoto Tsunakawa

Junichi Onishi

Shiro Bito

Atsushi Amano

Tsutomu Hirai

Hiroshi Takahashi

Takeo Usui

Yasukazu Tatsumi

Kenya Inomata

Yukiko Nagaoka

Kyou Imagawa

Makoto Tomizawa

In chromatographic separation in a plurality of steps with a chromatographic separator packed with an ion exchanger used as at least part of chromatographic packing, at least part of the ionic form of at least part of the ion exchanger is changed to an ionic form fit for separation of components to be separated in each step to effect chromatographic separation, whereby a starting fluid material containing at least 3 components can be efficiently separated into at least 3 fractions. A preferred example of the chromatographic separator comprising a group of packing bed units linked in endless series to form a circulation flow path is provided with a shutoff valve at a position of the circulation flow path; starting fluid material feed means, desorbent feed means and 2-fraction withdrawal means for all the packing bed units; and a single-fraction withdrawal means connected to the circulation flow path on the upstream side of the shutoff valve and without any packing bed unit therebetween.

Chromatographic separation process and chromatographic separator

At least 2 different packings differing in the resolution of components contained in a starting fluid material such as a starting solution material and desired to be separated are used in a coexistent state to adjust the resolution of the components. The starting fluid material is flowed through the resultant packing bed to effect chromatographic separation, whereby high-purity fractions enriched with respective components can be obtained at high recoveries with a small amount of desorbent such as eluent. In a chromatographic separator, at least 2 packings comprising a first packing high in the resolution of a component having a medium affinity (affinity for packing) and a weak-affinity component and a second packing high in the resolution of a strong-affinity component and the medium-affinity component in a coexistent state are used as chromatographic packing in contact with a fluid containing the medium-affinity component to adjust the resolution of every two of at least 3 components, whereby at least 3 fractions can be obtained.

Method and equipment for chromatographic separation

In demineralization of a beet sugar solution before boiling as the starting solution with a simulated moving bed chromatographic separator comprising a plurality of packed column units packed with a strongly acidic cation exchange resin in a salt form having an average grain size of 300 to 500 &mgr;m and a uniformity coefficient of at most 1.2 as chromatographic packing (separating packing), and each provided with a starting solution feed inlet, an eluent water feed inlet, a withdrawal outlet for a fraction of a component having a strong affinity for chromatographic packing (&ldquo;strong-affinity component&rdquo;), and a withdrawal outlet for a fraction of a component having a weak affinity for chromatographic packing (&ldquo;weak-affinity component&rdquo;); use is made of circulating pumps, the number of which is at least half of the number of the packed column units, and the beet sugar solution before boiling is demineralized under the following conditions: starting solution feed rate/eluent water feed rate volume ratio&equals;1/2.5 to 1/3.5, strong-affinity component fraction withdrawal rate/weak-affinity component fraction withdrawal rate volume ratio&equals;0.5/1 to 1.2/1, and circulating flow rate&equals;25 to 80 vol. % /hr. based on chromatographic packing in a slowest flow velocity zone in the circulation system, whereby a sucrose fraction having a high sucrose concentration is obtained using a small amount of eluent water with a large throughput.

Process for demineralizing a sugar solution

Process for recovering betaine

A medical system control apparatus including a plurality of pieces of medical equipment having respective identification numbers thereof individually, and having display portions on which setting conditions or operating conditions are displayed and operating portions for modifying the setting conditions or the operating conditions which are displayed on the display portions, a centralized controller for controlling the plurality of pieces of medical equipment, a centralized display device connected to the controller and provided with a display portion which displays the display contents of the plurality of pieces of medical equipment, a centralized operation device connected to the controller for controlling the setting conditions or the operating conditions which are displayed on the display portions of the plurality of pieces of medical equipment, and a communication device for enabling the plurality of pieces of medical equipment, the centralized display device and the centralized operation device and the controller to communicate with each other in a bidirectional manner.

System control apparatus, medical system control apparatus and

A communication port of a concentrated controller for performing concentrated control, and a communication port of each of a plurality of operation devices having respective peculiar ID codes are connected to each other by a signal transmitting cable or the like. An ID code of an operation device intended to be accessed from the concentrated controller is transmitted, whereby each of the operation devices judges whether or not the transmitted ID code is in agreement with one's own ID code. Access is made only to the operation device when the ID code is in agreement with one's own ID code. The operation of such device is capable of being controlled by transmitted information; and such operation is preferably related to a medical environment.

Medical operation device control system for controlling a operation

An insufflation apparatus intended to insufflate gas supplied from a gas supply source into a cavity of the human body through a gas insufflating pipe, comprising a switch valve for opening and closing a gas supply pipe extending from the gas supply source to the gas insufflating pipe, a cavity pressure measuring unit arranged in the gas supply pipe to measure the pressure in the body cavity, a pressure setting section for setting an intended pressure in the body cavity, an arithmetic unit for calculating the difference of a value measured by the cavity pressure measuring unit relative to the value of pressure set by the pressure setting section, and a changeover control unit for changing over the timings at which the switch valve is opened and closed on the basis of values thus calculated by the arithmetic unit.

Insufflation apparatus

An endoscope system includes an endoscope, an endoscope camera and a light source device. The light source device has an error detection unit for detecting an error of communication data and an error recovery unit for performing an error recovery operation in correspondence with an error content detected by the error detection unit.

Endoscope system

Growing community of inventors

Tokyo, Japan

Kouji Tanikawa