摘要:
A guide assembly of a self-propelled type for an endoscope including an elongated tube for entry in a body cavity is provided. First and second self-propelled units are mounted on a steering device of the elongated tube in an axial direction thereof, for contacting a wall of the body cavity for propulsion. The first and second self-propelled units include respectively first and second driving devices, actuated with force by an external drive source, for converting the force for the propulsion. The first self-propelled unit includes a first torque coil structure for transmitting the force from the drive source to the first driving device. The second self-propelled unit includes a second torque coil structure for transmitting the force from the drive source to the second driving device discretely from the first torque coil structure. The first self-propelled unit is fixedly mounted on the steering device.
摘要:
A self-propelled type of guide assembly for an endoscope includes a barrel for receiving an elongated tube of the endoscope in an axial direction. A rubber ring retains the barrel to the elongated tube in a form with a clearance space defined between the barrel and the elongated tube. The barrel includes a barrel sleeve, having a first inner diameter according to an outer diameter of the elongated tube. An end cup is formed to extend from an end of the barrel sleeve, has a second inner diameter larger than the first inner diameter, for allowing the steering device in the elongated tube to steer. Furthermore, a movable endless track device has an annular surface, movable on an endless track outside the barrel, for pushing a wall of a body cavity for propulsion in the axial direction. A drive roller moves the endless track device relative to the barrel.
摘要:
A medical fixed balloon disposed in an insertion portion to be inserted into a body cavity so as to fix the insertion portion to the inside of the body cavity, comprising: an inflation membrane inflated by supplying a fluid into an inside of the inflation membrane and whose outer peripheral surface is brought into contact with an inner wall of the body cavity, the inflation membrane having regions extended with a predetermined extension rate and having a plurality of low extension regions of a lower extension rate than the predetermined extension rate, formed on a line segment from a base end to a distal end along an insertion axis of the insertion portion.
摘要:
In a driver circuit 10 for outputting a simulated signal simulating an input signal subjected to transmission loss, corresponding to the input signal, the driver circuit 10 comprises: a main driver 18 which receives the input signal and outputs an output signal corresponding to the input signal; a sub driver 20 which receives the input signal and outputs an output signal given by inverting the input signal; a high frequency emphasizing circuit 22 which receives the input signal of the sub driver 20 and outputs an output signal having the high frequency of the input signal of the sub driver 20 emphasized; and an addition unit 24 which outputs the simulated signal given by adding the output signal of the main driver 18 and the output signal of the high frequency emphasizing circuit 22.
摘要:
An endoscope for imaging of an object in a body cavity by receiving image light on an image sensor is provided. In an elongated tube for entry in the body cavity, an objective lens system is incorporated for receiving the image light from the object. A fiber optic image guide includes plural bundled optical fibers and a distal tip, is inserted in the elongated tube, for transmitting the image light focused on the distal tip by the objective lens system. A piezoelectric actuator is positioned on the distal tip, for displacing the distal tip periodically. The image sensor detects the image light from the fiber optic image guide for plural times in synchronism with the displacement for forming a synthesized image. An anchoring device anchors the elongated tube partially on a wall of the body cavity, to stabilize the elongated tube relative to the image light.
摘要:
A front end rigid portion constitutes a front end of an endoscope insertion unit in an endoscope. The front end rigid portion is provided with an illumination optical system irradiating an observation target area with illumination light and an imaging optical system having an imaging element imaging the observation target area. The endoscope includes a heat emission member which is connected to the front end rigid portion and extends in the longitudinal direction of the endoscope insertion unit. The heat emission member is formed by mixing fiber-piece-shaped fillers with a resin material.
摘要:
A scanning electron microscope with a length measurement function includes an electron gun for emitting an electron beam, a measurement target region setting unit for setting a measurement region for a pattern formed on a sample, a storing unit for storing the designated measurement region, a beam blanker unit for controlling an irradiation of the electron beam depending on the measurement region, and a control unit for extracting the designated measurement region from the storing unit, interrupting the electron beam with the beam blanker unit in a region other than the measurement region, irradiating the electron beam onto the sample in the measurement region, capturing an image of the measurement region, and measuring the pattern. The measurement region may be a pair of regions having the same areas as each other.
摘要:
A transmission line driving circuit that can support a high-rate signal transmission and further can perform appropriate loss compensation in accordance with a signal pattern. A transmission line driving circuit 1 comprises a plurality of driver input circuits 20 that serve as signal analyzing unit for analyzing the content of the signal pattern of an input signal; a plurality of lowpass filters 30; a plurality of gain adjusting circuits 40; a plurality of adders 50; and adder 52; and a driver output circuit 60 that outputs, in accordance with a signal analysis result, a signal the phase of which has been adjusted in such a direction that cancels the timing deviation caused by a loss occurring when the input signal is transmitted to the transmission path. The output signal from the driver output circuit 60 is transmitted to the transmission path 2.
摘要:
The present invention provides a liver preservation solution containing trehalose and dibutyryl-cAMP. The content of nitroglycerin in the preservation solution is preferably lower than 0.44 mM. In the liver preservation solution of the present invention, since the toxicity due to nitroglycerin, which is observed during liver preservation, has been improved, liver transplantation can be performed with a high engrafted rate.
摘要:
The invention is a material for a solid polyelectrolyte, comprising a multi-segmented fluoropolymer that comprises a block copolymer and/or a graft copolymer, wherein the copolymer contains one or more blocks essentially consisting of segment A and one or more blocks essentially consisting of segment B, the segment A combines with the segment B, wherein the segment A has a molecular weight of 5,000 to 1,000.000, and the Segment A is a copolymer chain comprising (a) an ethylenicfluoromonomer containing sulfonic acid functional groups each represented by Formula (1) CX2═CX1—(O)n—Rf—SO2Y, wherein X and X1 may be the same or different and are each hydrogen or fluorine; Y is FI, Cl, or OY1 wherein y1 is hydrogen, alkali metal or C1-C5 alkyl; Rf is C1 to C40 divalent fluoroalkylene or C1 to C40 divalent fluoroalkylene having one or more ether bonds; and n is 0 or 1; and (b) at least one type of ethylenic fluoromonomer copolymerizable with the ethylenic fluoromonomer (a) and containing no sulfonic acid functional groups, the segment B is a fluoropolymer containing no sulfonic acid functional groups, has a molecular weight of 3,000 to 1,200,000, and has a crystalline melting point of 100° C. or higher or a glass transition point of 100° C. or higher, wherein the ratio of segment A:segment B in the segmented fluoropolymer is 5:9˜to 98:2 30:70 to 90:10 wt. %.