摘要:
A semiconductor optical amplifier includes a semiconductor substrate; an optical waveguide that includes an active layer formed on the semiconductor substrate; and a wavelength selective reflection film that is formed on an end face where signal light is incident on the optical waveguide the wavelength selective reflection film allows transmission of the signal light, and reflects light of any wavelength other than the signal light.
摘要:
A capsule medical device includes a capsule-shaped casing that can be introduced into an in-vivo region of a subject; and a rotation driving unit that generates torque along a circumferential direction of the capsule-shaped casing. The capsule medical device also includes a cutting-obtaining unit that rotates along the circumferential direction of the capsule-shaped casing due to the torque to cut out and obtain a mass of body tissue from the in-vivo region of the subject.
摘要:
A semiconductor optical amplifier includes a semiconductor substrate; an optical waveguide that includes an active layer formed on the semiconductor substrate; and a wavelength selective reflection film that is formed on an end face where signal light is incident on the optical waveguide the wavelength selective reflection film allows transmission of the signal light, and reflects light of any wavelength other than the signal light.
摘要:
A body-insertable apparatus that can reduce the apparatus size and perform projection operation of an injection needle in a power saving manner is provided. A body-insertable apparatus 1 according to the present invention has a balloon 4 for storing a medical fluid in a capsule-like casing 2, and an injection needle 5 including an elastic membrane 6. The body-insertable apparatus 1 discharges the medical fluid due to contraction of the balloon 4, applies a discharge pressure of the medical fluid to the elastic membrane 6 to expand the elastic membrane 6, and projects the injection needle 5 from the casing 2 due to the expansion of the elastic membrane 6. Further, the body-insertable apparatus 1 has a channel forming unit 11 for forming a channel 11a connecting to the balloon 4 and a channel 11b connecting to the injection needle 5, and a communication adjusting mechanism 12. The communication adjusting mechanism 12 adjusts a communicated state between the channels 11a and 11b, thereby controlling the start of medical-fluid discharge operation by the balloon 4.
摘要:
An already-existing and general-purpose capsule endoscope for alimentary canal is enabled to be used to monitor a body cavity by directly diverting the already-existing and general-purpose capsule endoscope to a body-cavity-indwelling capsule endoscope in a simple and secure manner. An indwelling device for an encapsulated medical device of the invention includes a latching portion 203 which fixes a capsule endoscope 300 and a retaining unit 202 which mounts and retains a capsule endoscope 300. Therefore, the capsule endoscope 300 and the latching portion 203 are integral with each other only by mounting and retaining the capsule endoscope 300 to and in the retaining unit 202, and then the capsule endoscope 300 can be placed along with the latching portion 203 by setting the latching portion 203 to a desired region in the body cavity to fix the latching portion 203 to a body cavity tissue by endoscopic treatment. Accordingly, the already-existing and general-purpose capsule endoscope 300 for alimentary canal can be used to monitor a body cavity by directly diverting the already-existing and general-purpose capsule endoscope to the body-cavity-indwelling capsule endoscope in the simple and secure manner.
摘要:
A body-insertable device is introduced into a desired part in a body for injecting a liquid medicine stored in a casing into the desired part. The body-insertable device includes a projecting portion which projects an injection needle injecting the liquid medicine toward the desired part; a detecting unit which detects a position relation between a biological tissue surface in the desired part and the injection needle; and a control unit. The control unit controls an amount of projection of the injection needle according to the position relation detected by the detecting unit, and controls a puncture depth of the injection needle from the biological tissue surface.
摘要:
A medical system includes: a medical device to be inserted into the body cavity; a rotating device for the medical device for rotating the medical device around the insertion axis; an image pickup device provided to the medical device; and an image capturing timing detection device for detecting a signal regarding image capturing timing performed by the image pickup device. Furthermore, the medical system includes: a rotating angle acquisition device for acquiring the rotating angle of the rotating device for the medical device regarding the image capturing timing in response to the output of the image capturing timing detection device; and an image acquisition device for performing rotation processing for the image captured by the image pickup device based upon the information regarding the rotating angle acquired by the rotating angle acquisition device, thereby acquiring the image subjected to a rotation processing.
摘要:
A driving method, able to realize a PDP device having a reduced background luminance and high display quality, has been disclosed. The driving method is a method for driving a plasma display panel consisting of plural display electrodes forming pairs of electrodes, plural address electrodes, and display cells formed at the intersections of the pairs of electrodes and the address electrodes, comprising an initialization period, an address period, a charge form period during which a charge form pulse is applied to the pair of electrodes, and a sustain discharge period during which a sustain discharge light emission is caused to occur, wherein the initialization period comprises a write period during which first amount of charges is accumulated in the display cells and a charge adjust period during which the amount of charges accumulated during the write period is adjusted to second amount of charges, and wherein the voltage to be applied to the pair of electrodes is an inclined wave-shaped charge adjust pulse, the voltage of which varies gradually and the absolute value of the voltage of the charge form pulse is greater than the absolute value of the voltage of the sustain discharge pulse.
摘要:
A display apparatus driving method for a field time division type display apparatus displays grayscale by combining a plurality of subfields into which one field has been divided. Each subfield includes a resetting, an addressing, and a sustaining. At least one extra subfield is additionally provided which does not have a resetting, and which stays always ON with a luminance level higher than a prescribed input luminance level.
摘要:
A diffraction grating is disposed adjacent to a ridge waveguide formed on a substrate (cladding). Assumed that a light propagation direction at the waveguide is z, a direction of width of the waveguide is x, and ends of the diffraction grating of this embodiment is x=gmin when z=0 and x=gmax when z=L/2, the ends of the diffraction grating can be expressed as the following functions f(z). Namely, f(Z)=gmin+(gmax−gmin)×(2z/L)n when 0≦z≦L/2, and f(Z)=gmin+(gmax−gmin)×(2-2z/L)n when L/2≦z≦L, where n>1.