Abstract: An ultrasound transducer array according to an embodiment includes a substrate, a plurality of groove-like recesses arranged at a predetermined interval on one surface of the substrate, a cell region arranged between the recesses on the one surface side of the substrate, a flexible film configured to cover the substrate and the cell region and having fragility lower than fragility of the substrate, and a dividing groove having a width smaller than a width of the recess and reaching from the other surface of the substrate to the flexible film in the recess.

Abstract: An ultrasound transducer array according to an embodiment includes a substrate, a plurality of groove-like recesses arranged at a predetermined interval on one surface of the substrate, a cell region arranged between the recesses on the one surface side of the substrate, a flexible film configured to cover the substrate and the cell region and having fragility lower than fragility of the substrate, and a dividing groove having a width smaller than a width of the recess and reaching from the other surface of the substrate to the flexible film in the recess.

Abstract: An ultrasound transducer unit includes: an ultrasound element; a substrate; a signal transmission cable; a cylindrical metal shield member that has a large-diameter portion, a small-diameter portion, and a step portion, in which the large-diameter portion covers an outer circumference of the substrate; ground wiring that electrically connects the substrate and an outer circumferential face of the metal shield member; and an opening portion formed in the step portion or the small-diameter portion. The ground wiring is extended to outside the metal shield member from inside the large-diameter portion through the opening portion, and is electrically connected to an outer circumferential face of the small-diameter portion to thereby electrically connect the substrate and the outer circumferential face of the metal shield member.

Abstract: An ultrasound transducer includes a substrate and a lower electrode layer, a lower insulating layer, an upper insulating layer, and an upper electrode layer. The lower insulating layer and the upper insulating layer are arranged to be opposed to each other via an air gap section. The upper insulating layer and the lower insulating layer are different in a material and thickness and satisfy Equation 1 below. In Equation 1, K1 represents a relative dielectric constant of the lower insulating layer, K2 represents a relative dielectric constant of the upper insulating layer, T1 represents thickness of the lower insulating layer, T2 represents thickness of the upper insulating layer, ?1(x) represents a charge density distribution in the lower insulating layer, and ?2(y) represents a charge density distribution in the upper insulating layer.

Abstract: An ultrasound diagnostic apparatus includes: transmission and reception signal lines that send transmission and reception signals of ultrasound to a plurality of ultrasound transducers; signal determining portions near the ultrasound transducers and determine a selection signal for selecting an ultrasound transducer to be driven or a readout signal for reading out the selection signal, the selection signal being sent out in synchronization with a transmission signal for forming the transmission and reception signal, and couple the ultrasound transducer to be driven with the transmission and reception signal line according to a result of the determination; and direct current blocking/clipping circuits that block a direct current bias component superimposed on the transmission and reception signal and sent via the transmission and reception signal line, and clip a waveform with large amplitude.

Abstract: An ultrasound transducer includes a substrate and a lower electrode layer, a lower insulating layer, an upper insulating layer, and an upper electrode layer. The lower insulating layer and the upper insulating layer are arranged to be opposed to each other via an air gap section. The upper insulating layer and the lower insulating layer are different in a material and thickness and satisfy Equation 1 below. In Equation 1, K1 represents a relative dielectric constant of the lower insulating layer, K2 represents a relative dielectric constant of the upper insulating layer, T1 represents thickness of the lower insulating layer, T2 represents thickness of the upper insulating layer, ?1(x) represents a charge density distribution in the lower insulating layer, and ?2(y) represents a charge density distribution in the upper insulating layer.

Abstract: A treatment tool for an endoscope according to the present invention includes: an outer sheath to be inserted into a channel of an endoscope; a forcep sheath which is movably arranged in the outer sheath along an axial direction; a plurality of forcep cups which are attached to a distal end of the forcep sheath, at least one of which is formed with a sharp needle-shaped portion on a distal end, and which cooperate with each other to be openable/closable as a whole; an operation wire which is movably arranged in the forcep sheath along an axial direction, and is connected to the forcep cups, and which opens/closes the forcep cups when moved in its axial direction; a first operation portion which is movably attached along an axial direction of a proximal end of the outer sheath, and is connected to a proximal end of the forcep sheath; and a second operation portion which is movably attached to the first operation portion along an axial direction of the proximal end of the forcep sheath, and is connected to a pr

Abstract: An ultrasound diagnostic apparatus includes: transmission and reception signal lines that send transmission and reception signals of ultrasound to a plurality of ultrasound transducers; signal determining portions near the ultrasound transducers and determine a selection signal for selecting an ultrasound transducer to be driven or a readout signal for reading out the selection signal, the selection signal being sent out in synchronization with a transmission signal for forming the transmission and reception signal, and couple the ultrasound transducer to be driven with the transmission and reception signal line according to a result of the determination; and direct current blocking/clipping circuits that block a direct current bias component superimposed on the transmission and reception signal and sent via the transmission and reception signal line, and clip a waveform with large amplitude.

Abstract: A treatment tool for an endoscope includes a forcep sheath, a first forcep cup and a second forcep cup which are attached to a distal end of the forcep sheath, and which cooperate with each other to be openable/closable as a whole, an operation wire which is movably arranged in the forcep sheath along an axial direction thereof, which is connected to the first forcep cup and the second forcep cup, and which opens/closes the first forcep cup and the second forcep cup when moved in its axial direction, wherein a sharp needle-shaped portion is formed on a distal end of the first forcep cup, the sharp needle-shaped portion extending farther than a distal end of the second forcep cup, and the sharp needle-shaped portion is arranged so that at least a portion thereof overlaps the second forcep cup.

Abstract: The present invention is a puncture apparatus with an automatic puncture function, that includes: a hollow needle tube; a flexible sheath having the needle tube inserted therethrough; a main body having one of the ends of the sheath fixed thereto; a slider attached to the main body, the slider being capable of sliding in an axial direction relative to the main body; a needle tube-maneuvering section, attached to the slider, capable of sliding in an axial direction relative to the slider, the needle tube-maneuvering section having an end section of the needle tube fixed thereto; a retraction state-maintaining member for maintaining the needle tube-maneuvering section in the retracted state toward a proximal end; an urging member, provided in the needle tube-maneuvering section, for urging a retracted state of the needle tube-maneuvering section toward the distal end; an operation section for resetting the operation of the retraction state-maintaining member; releasing the ejection force; and projecting the nee

Abstract: A treatment tool for an endoscope according to the present invention includes: an outer sheath to be inserted into a channel of an endoscope; a forcep sheath which is movably arranged in the outer sheath along an axial direction; a plurality of forcep cups which are attached to a distal end of the forcep sheath, at least one of which is formed with a sharp needle-shaped portion on a distal end, and which cooperate with each other to be openable/closable as a whole; an operation wire which is movably arranged in the forcep sheath along an axial direction, and is connected to the forcep cups, and which opens/closes the forcep cups when moved in its axial direction; a first operation portion which is movably attached along an axial direction of a proximal end of the outer sheath, and is connected to a proximal end of the forcep sheath; and a second operation portion which is movably attached to the first operation portion along an axial direction of the proximal end of the forcep sheath, and is connected to a pr