摘要:
An ultrasound endoscope has an ultrasound probe which is disposed at a distal end side of a distal end rigid portion configuring a distal end portion out of a flexible tube portion, a bending portion and the distal end rigid portion configuring an insertion portion, and forms an ultrasound scanning surface having a normal line in a direction orthogonal to an endoscope insertion axis L1, and a treatment instrument outlet of a treatment hole in the distal end rigid portion. The ultrasound probe is configured by a plurality of ultrasound transducers arranged in a convex circular arc shape, and a center of curvature of the plurality of ultrasound transducers is disposed at a proximal end side from the treatment instrument outlet.
摘要:
A micromachined ultrasound transducer including a plurality of ultrasound transducer cells each of which includes a substrate on which a bottom electrode is formed, and a membrane provided apart from the substrate and having an upper electrode formed thereon, said ultrasound transducer generating ultrasound with the membrane vibrating when voltage is applied between the bottom electrode and the upper electrode, comprises: a vibration propagation suppression unit suppressing propagation of vibration of said each ultrasound transducer cell to an adjacent ultrasound transducer cell.
摘要:
An ultrasound transducer of the present invention includes elements each provided with an electromechanical conversion element that converts an electric signal inputted between a first electrode and a second electrode into vibration, an array section made up of n elements in a row direction and m elements in a column direction (nm) arranged in a matrix form, and an array forming section that switches between a one-dimensional array state column-wise made up of m element groups formed by electrically connecting the first electrode terminals neighboring in the row direction out of the first electrode terminals in the element groups arranged on the same column and a one-dimensional array state row-wise made up of n element groups formed by electrically connecting the first electrode terminals neighboring in the column direction out of the first electrode terminals in the element groups arranged on the same row in the array section.
摘要:
An ultrasound diagnostic apparatus of the present invention includes a cap, and an ultrasound transducer which includes a lens provided in a piezoelectric element, is rotatable and swingable and is provided in a cap, and the lens focuses ultrasound transmitted from the piezoelectric element and includes a shape in which a first focal length of a first lens surface on a section parallel with a rotational center axis including a center of a sound beam axis of the ultrasound is shorter than a second focal length of a second lens surface on a section orthogonal to the rotational center axis including the center of the sound beam axis.
摘要:
A transducer wiring pad group provided in a distal end portion of an ultrasound transducer printed circuit board provided with signal patterns that transmit and receive signals to and from a plurality of ultrasound transducers, a flexible printed circuit board wiring pad group arranged in a longitudinal axis direction of the ultrasound transducer printed circuit board, a second signal pattern group that is connected between the transducer wiring pad group and the flexible printed circuit board wiring pad group and bends at substantially degrees in the middle thereof, and a relay flexible printed circuit board that is connected to the flexible printed circuit board wiring pad group and changes a direction of a signal pattern into the longitudinal axis direction are provided.
摘要:
An ultrasound transducer manufactured by using a micromachining process comprises: a first electrode into which a control signal for transmitting ultrasound is input; a substrate on which the first electrode is formed; a second electrode that is a ground electrode facing the first electrode with a prescribed space between the first and second electrodes; a membrane on which the second electrode is formed and which vibrates and generates the ultrasound when a voltage is applied between the first and second electrodes; a piezoelectric film contacting the membrane; and a third electrode electrically continuous to the piezoelectric film.
摘要:
An ultrasonic diagnostic apparatus includes an ultrasonic transducer including an acoustic lens, a piezoelectric element, a backing material, and a housing, a transducer holder that holds the ultrasonic transducer, a transducer side connector fixed in an inside of the ultrasonic transducer, and a holder side connector that is arranged in the transducer holder and connectable to the transducer side connector. Positioning and fixing of the ultrasonic transducer are performed by fitting the ultrasonic transducer in the transducer holder, the holder side connector is movable in a direction perpendicular to a connector connecting direction and is positioned by connection to the transducer side connector to electrically connect the ultrasonic transducer. With this ultrasonic diagnostic apparatus, it is possible and easy to replace the ultrasonic transducer, work for replacing the ultrasonic transducer is easy, and a distal end portion of the ultrasonic diagnostic apparatus incorporated with the ultrasonic transducer can be reduced in size.