The invention relates to a passive pressure sensor (501) for being introduced into the circulatory system of a human being and for being wirelessly read out by an outside reading system. The pressure sensor comprises a casing (502) with a diffusion blocking layer for maintaining a predetermined pressure within the casing and a magneto-mechanical oscillator with a magnetic object (508) providing a permanent magnetic moment. The magneto-mechanical oscillator transduces an external magnetic or electromagnetic excitation field into a mechanical oscillation of the magnetic object, wherein at least a part of the casing is flexible for allowing to transduce external pressure changes into changes of the mechanical oscillation of the magnetic object. The pressure sensor can be very small and nevertheless provide high quality pressure sensing.

Systems, devices, and methods for using an intraluminal sensing device are provided. The intraluminal sensing device may include a ferrous element disposed at a distal portion of an elongate flexible member configured to be placed in a body lumen of a patient. An external electromagnetic field device may be used to produce an electromagnetic field that may be used to direct the movement of the flexible elongate member within the body lumen.

An optical unit for endoscope includes: a moving barrel which is a soft magnetic body, configured to hold a lens; a fixed barrel which is a non-magnetic body, configured to movably hold the moving barrel on an inner circumferential face; a pair of yokes arranged on an outer face of the fixed barrel; a coil wound around the outer face of the fixed barrel and a magnet arranged on a part in the circumferential direction, between the pair of yokes; and a magnetic body member with magnetism stronger than magnetism of the moving barrel, the magnetic body member being arranged on a part of the moving barrel in the circumferential direction, corresponding to the magnet.

A magnetic field control system according to an embodiment of the present invention may comprise: a structure forming part for forming a three-dimensional structure having an inner space; a magnetic field generating part for generating a magnetic field, the magnetic field generating part being formed to extend from a predetermined position of the structure forming part and being disposed to face a target region defined in the inner space; and a power source part for supplying electric power to the magnetic field generating part.

An automatic detection of surgical instruments with respect to a type and a location thereof is provided with a detection system, which includes at least two surgical instruments, which each include at least one cavity extending along a longitudinal axis of the instrument and a proximal entry region to the cavity. An angle of the proximal entry region in relation to the longitudinal extension of the cavity is different in the two instruments. A sensor unit includes two electromagnetic sensors and is insertable into the cavity. One of the sensors extends axially in the cavity, and the other sensor is arranged in the entry region. A field generator generates an electromagnetic field. An analysis unit analyzes signals transmitted by the sensors to the analysis unit in accordance with the location thereof in the field of the field generator.

An endoscopy system including a flexible insertion tube, a motion sensing module and a processor is provided. The flexible insertion tube has a central axis. The motion sensing module includes a housing, patterns and sensors. The patterns are disposed at a surface of the flexible insertion tube according to an axial orientation distribution and an angle distribution based on the central axis. The sensors are disposed in the housing and located beside a guiding hole of the housing. The processor is disposed in the housing. During relative motion of the flexible insertion tube with respect to the motion sensing module via the guiding hole, the sensors are configured to sense a motion state of the patterns so as to obtain a motion-state sensing result. The processor determines insertion depth information and insertion tube rotating angle information according to the motion-state sensing result, the axial orientation distribution and the angle distribution.

The present invention provides a control method and a control system for a magnetic control capsule endoscopic apparatus. The method comprises: after the magnetic control capsule endoscopic apparatus is started, detecting a current motion mode thereof, where the motion mode comprises a vehicle-mounted mode and a normal mode; if the motion mode is configured as the normal mode, keeping a position of a magnetic ball unchanged, and directly entering an examination procedure; and if the motion mode is configured as the vehicle-mounted mode, after adjusting the position of the magnetic ball from a default position corresponding to the vehicle-mounted mode to a default position corresponding to the normal mode, entering the examination procedure. According to the method and the system, the position of the magnetic ball is adjusted, such that a plurality of application environments are adapted to, thereby improving the safety performance of the magnetic control capsule endoscopic apparatus.

A magnetically fixed laparoscope of the present invention, which is inserted into an abdominal cavity for imaging or surgery of an affected area and whose position is controlled by means of an external magnetic fixing unit, comprises: one or more flat-type antenna units connected to a rotation axis within the laparoscope; an internal hollow unit which can accommodate the flat-type antenna units; and an external hollow unit which can be inserted into the abdominal cavity where the affected area is located. As such, since it is possible to easily fold or unfold an antenna built into the laparoscope in the abdominal cavity, the present invention has the effect of enabling wireless control of the laparoscope and transmission and reception of data.

A system and method for controlling a capsule endoscope is provided. The control method includes: measuring a magnetic field value of the environment in which the capsule endoscope is subjected; obtaining a critical magnetic field value for suspension of the capsule endoscope according to the magnetic field value; adjusting a traction force on the capsule endoscope according to the critical magnetic field value for suspension; and controlling the movement of the capsule endoscope in a horizontal and/or vertical direction, wherein the movement of the first magnet is controlled by moving the second magnet, and the capsule endoscope is in a quasi-suspended state as moving in the horizontal and/or vertical direction. The system and method reduce friction between the capsule endoscope and wall of the target area during movement by controlling the capsule endoscope in a quasi-suspended state, which makes the scanning of the target area more accurate.

A capsule-type endoscope including a battery, a camera configured to capture internal organ images, a light source configured to irradiate light to capture the internal organ images, and a light source driving power line supplying power, stored in the battery, to the light source. The light source driving power line is a loop antenna coil for reception of a control signal from an external coupled loop antenna coil for transmission.