58 results about "Wireless capsule endoscope" patented technology

Wireless capsule endoscope technology has been used to image portions of the gastrointestinal (GI) tract, particularly the small bowel. However in other GI organs, especially those having larger-lumens, the capsule may become destabilized and tumble, precluding meaningful interpretation of the acquired images. The present invention describes a method and apparatus for permitting capsule imaging of organs having larger-lumens without tumbling, and includes an outer shell surrounding the capsule that targets the colon, as an example. Once the colon has been reached, the shell breaks or dissolves, and allows expansion of expandable materials attached to each end of the capsule, thereby stabilizing the capsule in the targeted organ, while permitting it to be moved by peristalsis and / or other means for locating the capsule. Imagers and light emitting diodes (LEDs) are activated during the expansion process, and enable overlapping of images. The capsule is moved through the colon, taking images at chosen frame rates with data being wirelessly transmitted by means of an RF transmitter, and is eventually expelled from the body.

Wireless capsule endoscope technology has been used to image portions of the gastrointestinal (GI) tract, particularly the small bowel. However in other GI organs, especially those having larger-lumens, the capsule may become destabilized and tumble, precluding meaningful interpretation of the acquired images. The present invention describes a method and apparatus for permitting capsule imaging of organs having larger-lumens without tumbling, and includes an outer shell surrounding the capsule that targets the colon, as an example. Once the colon has been reached, the shell breaks or dissolves, and allows expansion of expandable materials attached to each end of the capsule, thereby stabilizing the capsule in the targeted organ, while permitting it to be moved by peristalsis and / or other means for locating the capsule. Imagers and light emitting diodes (LEDs) are activated during the expansion process, and enable overlapping of images. The capsule is moved through the colon, taking images at chosen frame rates with data being wirelessly transmitted by means of an RF transmitter, and is eventually expelled from the body.

The present invention relates to a wireless capsule endoscope and a power supply control method thereof. The method includes controlling the power supply of the capsule endoscope wirelessly and automatically adjusting power consumption of the power supply in the capsule endoscope. The wireless capsule endoscope includes a capsule casing, a light generator arranged at outside of the capsule casing, an opto-electronic switching starter arranged in the capsule casing, a power supply, a control module, a posture sensor, an illumination unit, an image processing device and a radio frequency transmission unit. The power supply being driven by the light generator in the present invention can effectively solve the incompatible problem between a traditional magnetic switch and a magnetic control device. Meanwhile, the control module and the posture detector enable the power supply to be in different working status under different states, which can prolong the service life of the power supply of the capsule endoscope.

The invention provides a positioning system and a positioning method for a three-dimensional position and a three-dimensional attitude of a wireless capsule endoscope. The positioning system comprises a three-axis-orthogonal transmitting coil outside a human body, an in vitro wireless receiving module, an in vitro position and attitude calculating module, and an in vivo wireless capsule endoscope. The three-axis-orthogonal transmitting coil is arranged outside the human body; only a two-axis-orthogonal induction coil is arranged in the wireless capsule endoscope; the transmitting coil is close to the human body; a coil I, a coil II and a coil III of the transmitting coil transmit signals with respective fixed frequencies in order; the time spent by the three-axis transmitting coil for completing transmission of signals once is called a cycle; the two-axis induction coil inductively outputs three groups of voltage signals with different frequencies in one cycle; thus an equation set can be built for calculation of a three-dimensional position and a three-dimensional attitude. The method is convenient in integration; the two-axis induction coil only occupies a little place in the wireless capsule endoscope; the wireless capsule endoscope can be positioned continuously in real time; subsequent operations are facilitated; the system and the method are safe and reliable and are low in cost.

Wireless capsule endoscope technology has been used to image portions of the gastrointestinal (GI) tract, particularly the small bowel. However in other GI organs, especially those having larger-lumens, the capsule may become destabilized and tumble, precluding meaningful interpretation of the acquired images. The present invention describes a method and apparatus for permitting capsule imaging of organs having larger-lumens without tumbling, and includes an outer shell surrounding the capsule that targets the colon, as an example. Once the colon has been reached, the shell breaks or dissolves, and allows expansion of expandable materials attached to each end of the capsule, thereby stabilizing the capsule in the targeted organ, while permitting it to be moved by peristalsis and / or other means for locating the capsule. Imagers and light emitting diodes (LEDs) are activated during the expansion process, and enable overlapping of images. The capsule is moved through the colon, taking images at chosen frame rates with data being wirelessly transmitted by means of an RF transmitter, and is eventually expelled from the body.

The invention discloses a wireless capsule endoscope system. A wireless capsule endoscope at least comprises a first wireless capsule endoscope and a second wireless capsule endoscope, wherein the first wireless capsule endoscope is put into a body first and shoots images which serve as reference images inside the body; and the second wireless capsule endoscope adjusts the shooting speed of the second wireless capsule endoscope according to the information of the reference images shot by the first wireless capsule endoscope inside the body. Based on a suspected diseased area, the wireless capsule endoscope system changes the shooting speed in a targeted way, so the number of pictures of the suspected diseased area is increased effectively, namely the ratio of the pictures which need more observation to the total number of the pictures is raised, the burden of post image processing and screening is lowered, and doctors can diagnose more conveniently.

The invention discloses a dual-frequency microstrip antenna applied to a wireless capsule endoscope. The dual-frequency microstrip antenna is attached to the capsule outer wall of the wireless capsule endoscope. The dual-frequency microstrip antenna of the wireless capsule endoscope is characterized in that a feeder line end, an outer hollow-square-shaped antenna part and an inner hollow-square-shaped antenna part are included, and the two antenna parts are electrically connected with the feeder line end. The length of the outer hollow-square-shaped antenna part corresponds to the full wave length of the center frequency of a first expectation frequency band, and the length of the inner hollow-square-shaped antenna part corresponds to the full wave length of the center frequency of a second expectation frequency band. The inner hollow-square-shaped antenna part is embedded in the outer hollow-square-shaped antenna part, and the center frequency of the first expectation frequency band and the center frequency of the second expectation frequency band are both smaller than and equal to 1 GHz. A third antenna part is embedded in the inner hollow-square-shaped antenna part, and the third antenna part is provided with a plurality of sets of hollow-square-shaped attaching pieces which are electrically connected with the inner hollow-square-shaped antenna part and is used for improving the matching impedance of the feeder line end. The dual-frequency microstrip antenna is a capsule outer wall attaching antenna, the working frequency is lower than 1 GHz, the advantages of ultra bandwidths and small sizes are achieved, and the dual-frequency microstrip antenna is suitable for working in the small intestine of a human body.

The present invention relates to a wireless capsule endoscope and a power supply control method thereof. The method includes controlling the power supply of the capsule endoscope wirelessly and automatically adjusting power consumption of the power supply in the capsule endoscope. The wireless capsule endoscope includes a capsule casing, a light generator arranged at outside of the capsule casing, an opto-electronic switching starter arranged in the capsule casing, a power supply, a control module, a posture sensor, an illumination unit, an image processing device and a radio frequency transmission unit. The power supply being driven by the light generator in the present invention can effectively solve the incompatible problem between a traditional magnetic switch and a magnetic control device. Meanwhile, the control module and the posture detector enable the power supply to be in different working status under different states, which can prolong the service life of the power supply of the capsule endoscope.