Olympus Corporation

Olympus Medical Systems Corporation

Siemens Aktiengesellschaft

Akio Uchiyama

Hironobu Takizawa

Atsushi Kimura

Takeshi Yokoi

Hironao Kawano

Ryoji Sato

Atsushi Chiba

Hidetake Segawa

Kenichi Arai

Kazushi Ishiyama

Shinsuke Tanaka

Hitoshi Mizuno

Masatoshi Homan

Isao Aoki

Tetsuo Minai

Shin Yabukami

Masahiko Sendoh

Katsumi Hirakawa

Manabu Fujita

Masahiro Takata

Hideki Koyanagi

Mitsuhiro Ito

Yoshiyuki Tanii

Seiichi Ito

Akira Kikuchi

Ryo Karasawa

Takeshi Mori

Hideo Ito

Akihiro Horii

Tadashi Hirata

Takeshi Suga

Johannes Reinschke

Kazuaki Tamura

Tatsuya Orihara

Wolfgang Schmidt

Atsushi Okawa

Shuhei Iizuka

Kazunari Tokuda

Tianyu Xie

Takahiro Iida

Mitsuhiro Hara

Yoshiyuki Kumada

Masahiko Sendou

The medical device guidance system include a magnetic guidance device which generates a guidance field in an arbitrary direction to guide a capsular medical device and carry out movement and posture control, a position detection device which detects the present position by a magnetic field generated by the capsular medical device and a position calculating and correcting section which forms an estimation equation of an undesired magnetic field generated from a guidance coil and subtracts an estimation equation result from the detection result of the magnetic field detecting section, according to the present position of the capsular medical device that controls the position and posture by a guidance field relative to the position detection device, and corrects the present position by excluding a desired magnetic field generated from a guidance coil.

Medical device guidance system

A medical guidance system and a control method of a medical device are provided, which may increase the drive force of a medical device and improve controllability thereof. The medical guidance system has a medical device that includes a biologic information acquisition unit that acquires biologic information of the inside of a body cavity and a magnet that generates drive force in response to a magnetic field exerted from the outside of a body, a magnetic field generation unitthat generates the magnetic field to be exerted on the magnet from the outside of a body, and a displacement detection unitthat detects displacement being an angle formed between the magnetization direction of the magnet and the field direction of the magnetic field generated by the magnetic field generation unitat the position of the medical device; wherein the magnetic field generation unitis controlled based on the displacement.

Medical guidance system and control method of medical device

A rotary self-propelled endoscope system includes an insertion section body, an insertion section, a drive unit, a torque detection unit, and a control unit. In a distal end portion of the insertion section body, a rigid distal end portion including an image pickup apparatus is disposed. The insertion section is rotatably fit to the outside of the insertion section body, and includes a rotary tubular member having a helical portion formed by a helical concave-convex portion. The drive unit applies the rotary tubular member with axial and rotational drive force. The torque detection unit detects torque information of the rotary tubular member. On the basis of the torque information detected by the torque detection unit, the control unit compares a present value with a preset limit value for controlling the torque of the rotary tubular member, and controls the drive unit on the basis of the comparison result.

Rotary self-propelled endoscope system

An encapsulated medical device guidance system, and a method of controlling the system, in which a magnetic generator acts on a magnet built into a capsulated medical device, and generates a magnetic field for controlling the position and/or posture of the capsulated medical device, and a control unit has a dynamic torque estimation unit to estimate a dynamic torque to be applied to the encapsulated medical device in a target posture, controls a magnetic field generated from the magnetic field generator so that a magnetic torque generated by the magnetic field generator becomes proportional to a dynamic torque estimated by the dynamic torque estimation unit, and controls the posture of a capsule endoscope by considering gravity applied to the capsule endoscope itself.

Encapsulated medical device guidance system, and a method of controlling the same

Position detection of a medical device is prevented from being impossible even when the frequency characteristic of a magnetic induction coil is varied in accordance with the state of an external magnetic field for guiding the medical device. A medical device position detecting system is a medical device position detecting system which is inserted into the body of a subject and guided by an external magnetic field, and it is equipped with a resonance circuit that is mounted in the medical device, contains a magnetic induction coil having a magnetic material inside and generates an alternate magnetic field, an alternate magnetic field detecting device that is disposed at the outside of an operation region of the medical device and detects the alternate magnetic field generated by the magnetic induction coil, a position information calculator for calculating position information of the medical device on the basis of the detected alternate magnetic field, and a frequency setting unit for setting at least one of the frequency of the alternate magnetic field detected by the alternate magnetic field detecting device and the frequency of the alternate magnetic field generated by the magnetic induction coil on the basis of at least one of the intensity and direction of an external magnetic field at the position of the magnetic induction coil.

Medical device position detecting system, medical device guiding system, and position detecting method for medical device

An indwelling apparatus () for holding a capsule endoscope () is arranged with a control device () including an optical sensor (), a control board () configuring a controller and a reset circuit, a driver board () configuring an electromagnet driver, and an electromagnet (), where when the optical sensor () detects the light, the controller performs the drive control of the electromagnet () at every constant time interval to turn ON the reed switch () and supply power to the capsule endoscope () thereby operating the capsule endoscope () only when observation is necessary, and thus the battery drain of the capsule endoscope is reduced.

Indwelling apparatus for body cavity introducing device and body cavity introducing device placing system

An encapsulated endoscope system in accordance with the present invention comprises: an encapsulated endoscope that rotates to develop a thrust; a controller that moves the encapsulated endoscope in an intended direction of advancement; an imaging unit incorporated in the encapsulated endoscope; and an image processing unit that receives image data sent from the imaging unit, and produces an image, which results from rotation of the received image data, according to the rotational phase of the encapsulated endoscope.

Encapsulated endoscope system in which endoscope moves in lumen by itself and rotation of image of region to be observed is ceased

Using a guidance system with a simple configuration, propulsive motion along a longitudinal direction and changing of the propulsion direction are easily performed with good precision and stability. There is provided a capsule-type medical apparatus which is inserted into the body of a subject and is guided by an external magnetic field, the capsule-type medical apparatus comprising: a substantially cylindrical capsule; a propulsion mechanism for converting rotary motion about a longitudinal axis R of the capsule into propulsive motion along the longitudinal axis R; a magnet accommodated inside the capsule and disposed in such a manner that the magnetic-pole direction thereof can be switched between a direction along the longitudinal axis R and a direction intersecting the longitudinal axis R; and a securing portion for securing the magnet to the capsule in each of the switched states of the magnetic-pole direction.

Capsule-type medical apparatus, guidance system and guidance method therefor, and intrasubject insertion apparatus

A body-insertable apparatus includes a light-receiving unit that includes light-receiving elements each having a receiving wavelength spectrum; light-emitting units including a near ultraviolet light source and including a yellow light source; a selection unit that can select, from among the light-emitting units, light-emitting units corresponding respectively to the near ultraviolet and the yellow light sources; an image creating unit creating a normal-light image or creating a special-light image; a transmitting unit transmitting the normal-light image or the created special-light image; and a control unit controlling driving of the light-receiving elements in accordance with selection performed by the selection unit.

In-vivo imaging system and body-insertable apparatus

Provided is an intra-subject medical system which includes a body-insertable device and a physical quantity generator. The body-insertable device is to be introduced into a subject, is covered by a capsule-shaped exterior member, and includes a physical quantity detecting member which has a directivity to detect a predetermined physical quantity; at least one functional member which has a necessary function for examining or treating inside the subject; and a switch control unit which controls an on/off state or operation mode of the at least one functional member when the physical quantity detecting member detects a physical quantity. The physical quantity generator has a physical quantity emitting unit which emits a temporary physical quantity inside the subject; and a physical quantity direction changing unit which changes an emission direction of the physical quantity.

Intra-subject medical system, method of operating body-insertable apparatus and operative treatment

A position detection system for a detection object and a position detection method for a detection object that enable calibration without removing a detection object after the detection object is introduced into a detection space are provided. Provided are a magnetic-field generating unit () that generates a position-detection magnetic field; a detection object () including a resonant circuit () that generates a resonant magnetic field and an external-signal switch that connects or disconnects the path of the resonant circuit (); a switch-controlling unit () that controls connecting or disconnecting of the external-signal switch; a position-detection-magnetic-field detecting unit () that detects the magnetic field strength of at least one of the position-detection magnetic field and the resonant magnetic field; and a position-calculating unit () that calculates the position and orientation of the detection object () based on a detection signal from the position-detection-magnetic-field detecting unit ().

Position detection system for detection object and position detection method for detection object

A body-insertable apparatus system has a body insertable apparatus that is inserted into a subject and a control apparatus. The body-insertable apparatus includes a magnetic responding unit that is provided within a casing forming the body-insertable apparatus and has a magnetization direction; and a needle that is protruded and retracted with respect to a surface of the casing. The control apparatus includes a magnetic field generator that generates a magnetic field; and a control unit that causes the magnetic field generator to generate a magnetic field for changing an orientation of the magnetic responding unit based on the magnetization direction of the magnetic responding unit in the body-insertable apparatus, a position of the needle in the body-insertable apparatus, and a distal end direction of the needle, thereby changing an orientation of the entire body-insertable apparatus to enable the protruded needle to puncture a puncture target layer.

Body-insertable apparatus system

To stably and properly monitor an inside of a body by using an easily operable placement technique, a capsule endoscopeto be swallowed from an oral cavityto acquire in-vivo information of a subjectand to wirelessly output for a transmission of the in-vivo information to an outside of a body, a string memberthat is connected to the capsule endoscopefor positioning the capsule endoscopeat a gastric cardia, and a fixing portionthat is a portion of the string member, is provided on a position with which a length from the capsule endoscopecorresponds to a length from the gastric cardiato the inside of an esophageal regionfor fixing the string memberthat has located the capsule endoscopeat the gastric cardiato the inside of the esophageal regionby an endoscopic fixture are included. As a result, the capsule endoscopeis placed at a position of the gastric cardiawhere an entire inside of the stomach is easily inspected, and the capsule endoscopeitself can easily be placed inside the esophageal region by using the fixing portion

In-vivo information acquiring apparatus, in-vivo information acquiring system, and in-vivo information acquiring method

A capsule guiding system includes a capsule medical device having an imaging device that takes an in-vivo image of a subject and a magnet with a magnetization direction that is relatively fixed with respect to the imaging device; a magnetic guiding device that applies a magnetic field to the magnet in the subject and guides the capsule medical device; a display unit that displays the in-vivo image of the subject; and a control unit that causes the magnetic guiding device to apply a magnetic field in a reference direction to the magnet, initializes a rotation angle of an image taken by the imaging device when the magnetization direction of the magnet is oriented to the reference direction following the magnetic field in the reference direction, performs, referring to the image, rotation correction on subsequent in-vivo images, and causes the display unit to sequentially display the corrected in-vivo images.

Capsule guiding system and capsule guiding method

A capsule medical apparatus includes a capsule exterior member and a sensor that can detect the change of an atmospheric physical quantity caused outside the exterior member in the non-contact state, and performs, based on the temporary change in atmospheric physical quantity detected by the sensor, at least one of first control for switching operation from the ON-state of energy supply to the electric circuit from the battery to the OFF-state of the energy supply and of second control for switching operation from the OFF-state of the power supply to the ON-state of the power supply, and holds the state of energy supply switched by the control until another change of atmospheric physical quantity is detected.

Capsule medical apparatus

Growing community of inventors

Yokohama, Japan

Akio Uchiyama