188 results about "Ultrasonic Endoscopy" patented technology

A rigid tip end section which is connected to an angle section at the fore distal end of an insertion instrument of an ultrasound endoscope is housed in a casing which can be split into a main casing and a separable head block to facilitate maintenance and service of internal component parts of the rigid tip end section. An ultrasound transducer is accommodated in a front side portion of the main casing, while endoscopic observation means including an illumination means and an optical image pickup means are fitted in an inclined wall rising obliquely upward on the rear side of the ultrasound transducer. An outlet opening of a biopsy channel outlet passage is located between the ultrasound transducer and the endoscopic observation means. The main casing is adapted to accommodate the ultrasound transducer and its wiring, while the separable head block is adapted to accommodate at least part of component parts of the endoscopic observation means. The main casing and the separable head block are joined with each other through joint wall portions provided along split lines at the opposite lateral sides and at the front side thereof. A foremost one of angle rings of the angle section is detachably fitted on base end portions of the main casing and separable head block to retain these parts in a fixedly connected state.

A composite piezoelectric material capable of reducing a peak temperature of a vibrator array to be used for transmitting or receiving ultrasonic waves in ultrasonic imaging. The composite piezoelectric material includes: plural piezoelectric materials arranged along a flat surface or curved surface; and an anisotropic heat conducting material having a higher coefficient of thermal conductivity in at least one direction and provided between the plural piezoelectric materials and / or at outer peripheries of the plural piezoelectric materials.

An ultrasonic endoscope comprises an insertion portion comprising a distal hard portion which has: an endoscopic observation unit; and an ultrasonic observation unit having ultrasonic transducers arranged circumferentially on an outer circumferential section of the distal hard portion, wherein the ultrasonic observation unit comprises an ultrasonic-wave transmission / reception unit having an tunnel-shaped path which has an inner circumferential surface formed as a backing layer; a distal block is arranged on a distal side in an axial direction of the distal hard portion with respect to a location where the ultrasonic-wave transmission / reception unit is arranged, and distal ends of respective members constituting the endoscopic observation unit are fixed to the distal block; and part of the members which constitute the endoscopic observation unit are fitted so as to be partially protruded from an inside diameter of the tunnel-shaped path toward an outer circumferential side thereof.

An ultrasonic endoscope in which the temperature rise can be suppressed with a reduced diameter. The ultrasonic endoscope includes: an ultrasonic transducer part including plural ultrasonic transducers; an exterior member for accommodating the ultrasonic transducer part; and a heat conducting part provided inside of the exterior member and respectively connected to the ultrasonic transducer part and an inner surface of the exterior member. It is preferable that the heat conducting part has a coefficient of thermal conductivity equal to or more than 10 W / (m·K). Further, it is preferable that one of the heat conducting member and the exterior member has an electric insulation property.

The invention relates to an annular-array ultrasonic endoscope probe, a preparation method thereof and a fixing rotating device. The probe comprises a metal cylinder located in the center and a plurality of piezoelectric array elements arranged around the metal cylinder and formed by cutting piezoelectric ceramic circular rings or monocrystalline circular rings. A backing material layer is equipped between the piezoelectric array elements and the metal cylinder. A matching material layer is covering on the outer sides of the piezoelectric array elements. Decoupling materials are filled among the piezoelectric array elements. The probe further comprises a plurality of coaxial cables correspondingly connected with the piezoelectric array elements; and annular grids sleeved on the metal cylinder, each having a gear-shaped structure and applied for arranging and separating the coaxial cables. By directly cutting piezoelectric ceramic circular rings or piezoelectric monocrystalline circular rings to make the piezoelectric array elements, the probe provided in the invention prevents the problems generated when a multi-layer material with a certain thickness is forcibly reeled into a cylindrical shape in a conventional method and characterized in that the array elements are not coaxially arranged; the array elements on the interface positions are not aligned; a conventional probe is easy to be damaged, disengaged and broken, etc.

A composite piezoelectric material capable of reducing a peak temperature of a vibrator array to be used for transmitting or receiving ultrasonic waves in ultrasonic imaging. The composite piezoelectric material includes: plural piezoelectric materials arranged along a flat surface or curved surface; and an anisotropic heat conducting material having a higher coefficient of thermal conductivity in at least one direction and provided between the plural piezoelectric materials and / or at outer peripheries of the plural piezoelectric materials.

An ultrasonic diagnostic apparatus has an ultrasonic endoscope, an ultrasonic observing portion, a position detecting unit, a monitor, a keyboard, and a mouse. Cross-sectional planes in parallel therewith are set to radial tomographic images, an intersecting line segment is obtained between a radial tomographic image and the cross-sectional plane, the intersecting line segments are combined, and a route tomographic image is generated. It is easily recognized how the lesion is spreading along the luminal portion during the examination by advancing and returning a radial scanning ultrasonic probe. Further, which part in the luminal portion is scanning during the examination can easily be recognized during the examination.

An ultrasonic diagnostic apparatus has an ultrasonic endoscope, an ultrasonic observing portion, a position detecting unit, a monitor, a keyboard, and a mouse. Cross-sectional planes in parallel therewith are set to radial tomographic images, an intersecting line segment is obtained between a radial tomographic image and the cross-sectional plane, the intersecting line segments are combined, and a route tomographic image is generated. It is easily recognized how the lesion is spreading along the luminal portion during the examination by advancing and returning a radial scanning ultrasonic probe. Further, which part in the luminal portion is scanning during the examination can easily be recognized during the examination.

An ultrasonic endoscope is provided with: a vibrator unit (2) which has an upper surface, a bottom surface, and side surfaces connecting the upper surface and the bottom surface and which performs the transmission and reception of an ultrasonic wave on the upper surface side; a cable (4a) which transmits and receives an electric signal from the vibrator unit (2) and which is connected to a side surface; an electrically conductive sealed case (5) which covers the side surfaces and the bottom surface, the electrically conductive sealed case (5) having an outlet opening (17), out of which the cable (4a) is led, and also having a flexible extended section (18) which is extended from at least the upper surface side of the outlet opening (17); and a housing (3) which holds the vibrator unit (2) through the sealed case (5) and which has a cable insertion path (21) into which the cable (4a) and the extended section (18) are inserted.