Fujifilm Corporation

Yasuhiko Morimoto

Katsuya Yamamoto

Satoru Okada

Tsuneo Fukuzawa

Shozo Iyama

Toshizumi Tanaka

Yoshiyuki Kunuki

Kazushi Furukawa

Noboru Kinomoto

Tatsuhiro Iwaya

Tomohiro Ohki

Yuto Shimoyama

An ultrasonic endoscope includes: an ultrasonic transducer having an ultrasonic vibrator; a distal end portion body disposed continuously with a proximal end side of the ultrasonic transducer; an erecting base housing portion that is disposed in the distal end portion body and has an opening which opens toward one side in a direction perpendicular to the axial direction of the distal end portion body; a treatment tool lead-out port that communicates with the inside of the erecting base housing portion; an erecting base that is disposed in the inside of the erecting base housing portion and changes a lead out direction of a treatment tool led out from the treatment tool lead-out port; and a cleaning communication hole that is formed in a wall surface on a side opposite to a side where the opening of the erecting base housing portion is disposed and communicates with an outside.

Ultrasonic endoscope

The endoscope includes a treatment tool delivery port that is formed in a distal end part body and allows a treatment tool to be delivered therethrough; an elevator that controls a delivery direction of the treatment tool delivered from the treatment tool delivery port; an observation window that is provided at a position closer to a first direction side in a latitudinal direction than the treatment tool delivery port in the distal end part body in a case where a direction perpendicular to both a longitudinal axis and a normal direction of an opening surface of the treatment tool delivery port is the latitudinal direction of the treatment tool delivery port; and a first illumination window that is provided at a position closer to a second direction side opposite to the first direction side than the treatment tool delivery port in the distal end part body.

Endoscope

There are provided an ultrasound diagnostic apparatus and an operation method of an ultrasound diagnostic apparatus capable of performing polarization processing during the execution period of ultrasound diagnosis without affecting the image quality of an ultrasound image. In the ultrasound diagnostic apparatus and the operation method of the ultrasound diagnostic apparatus of the invention, a trigger generation circuit generates a trigger for starting polarization processing. After a trigger is given, during the execution period of ultrasound diagnosis, in a non-diagnosis period which is a period other than a period for acquiring an image of each frame and during which transmission of ultrasound waves and reception of reflected waves for performing ultrasound diagnosis are not performed, within each frame time in which an image of each frame of an ultrasound image is acquired, a control circuit performs polarization processing on a plurality of ultrasound transducers.

Ultrasound diagnostic apparatus and operation method of ultrasound diagnostic apparatus

Provided is an endoscope that can suppress increase in the temperature of a distal end portion of an insertion section while preventing increase in the number of components and increase in the diameter of the distal end portion. An endoscope includes: a distal end portion body that is provided on a distal end side of an insertion section and that has a distal end, a proximal end, and a longitudinal axis; a treatment tool lead-out port that is formed in the distal end portion body and that leads out a treatment tool inserted through an inside of the insertion section; an elevator support member that is provided in the distal end portion body, that is made of a metal, and that rotatably supports an elevator that controls a lead-out direction in which the treatment tool is led out from the treatment tool lead-out port; a light guide that is inserted through the inside of the insertion section and that emits illumination light through an illumination window formed in the distal end portion body; and a light guide holding portion that is provided in the elevator support member and that holds a light guide distal end portion of the light guide on the illumination window side.

Endoscope having elevator support member in distal end portion body for heat dissipation

The ultrasonic endoscope includes: an insertion part that includes a tip, a base end, and a longitudinal axis; an ultrasonic transducer that is provided at the tip of the insertion part; a locking groove that is a balloon mounting portion which is disposed closer to the base end of the insertion part than the ultrasonic transducer is and on which a balloon wrapping the ultrasonic transducer is detachably mounted; a balloon pipe line that extends in the insertion part; a tip-side opening surface of the balloon pipe line that is provided closer to the tip than the locking groove and has components normal to a direction of the longitudinal axis; and a groove portion which is formed toward the tip from the tip-side opening surface as a starting point and of which at least a part overlaps the ultrasonic transducer in the direction of the longitudinal axis.

Provided is an ultrasound endoscope capable of preventing a non-coaxial cable from being disconnected and improving a degree of freedom of wirings. An ultrasound endoscope includes a first cable that electrically connects a substrate electrically connected to a plurality of ultrasound transducers and a relay substrate, the first cable includes a plurality of first non-coaxial cables, a plurality of first electrical bonded portions are formed by signal wires of a first cable bundle of the first non-coaxial cables and electrode pads of the substrate, a plurality of second electrical bonded portions are formed by the signal wires of the first cable bundle and first cable-side electrode pads of the relay substrate, and a plurality of first electrical bonded portions and a plurality of second electrical bonded portions are collectively disposed for each first cable bundle.

Ultrasound endoscope for preventing a non- coaxial cable from being disconnected and improving a degree of freedom of wiring

Provided are a treatment tool elevating mechanism and an ultrasonic endoscope capable of restraining an increase in diameter of an endoscope and bearing a load. The treatment tool elevating mechanism includes: a rotary shaft portion that is supported so as to be rotatable about a rotation axis; an elevator that is connected to one end of the rotary shaft portion so as to be rotatable integrally with the rotary shaft portion; and an elevating lever that is connected to the other end of the rotary shaft portion so as to be rotatable integrally with the rotary shaft portion, in which a rotational force is applied to the elevating lever, and the rotational force is transmitted to the elevator through the rotary shaft portion, at least one fitted member of the elevating lever or the elevator has a fitting recessed portion that is open in a direction of the rotary shaft portion, the rotary shaft portion has a fitting protruding portion that is fitted into the fitting recessed portion so as to be non-rotatable relative to the fitting recessed portion, and the fitting protruding portion has a center of gravity at a position eccentric from the rotation axis in a cross-section perpendicular to the rotation axis.

Treatment tool elevating mechanism and ultrasonic endoscope

Provided is an ultrasonography system capable of suppressing image quality deterioration of an ultrasound image and achieving reduction in diameter of an ultrasound endoscope. An ultrasonography system includes an ultrasound transducer array in which a plurality of ultrasound transducers are arranged, a cable that is connected to the plurality of ultrasound transducers, the cable having a non-coaxial cable that includes a first cable bundle consisting of a plurality of signal wires and a plurality of ground wires, and a first shield layer with which the first cable bundle is coated, and an outer coat with which a second cable bundle consisting of a plurality of the non-coaxial cables is coated, a memory that stores static capacitance data indicating static capacitance of each signal wire included in the first cable bundle, and a processor that periodically corrects transmission and reception sensitivity of each ultrasound transducer based on the static capacitance data stored in the memory.

Ultrasonography system

In an ultrasound diagnostic apparatus and an operation method of the ultrasound diagnostic apparatus of the invention, a control circuit performs polarization processing on a plurality of ultrasound transducers in a non-diagnosis period, during which transmission of ultrasound waves and reception of reflected waves for performing ultrasound diagnosis are not performed, in a case where the cumulative driving time of the plurality of ultrasound transducers for performing the ultrasound diagnosis becomes equal to or longer than a specified time. A transmission circuit generates a first transmission signal having a driving voltage for performing ultrasound diagnosis using a pulse generation circuit in the case of performing the ultrasound diagnosis, and generates a second transmission signal having a polarization voltage for performing polarization processing using the same pulse generation circuit as in the case of generating the first transmission signal in the case of performing the polarization processing.

There is provided an ultrasonic endoscope, in which bending of a signal cable at a time of assembling a distal end portion is alleviated and the signal cable is prevented from being disconnected, and a manufacturing method thereof. An ultrasonic endoscope () includes a cable insertion hole (), a storing portion () that is formed on a distal end side of the cable insertion hole (), an ultrasonic transducer () that has an ultrasonic vibrator disposed in the storing portion (), an elevator housing portion () that is open in a first direction, an elevator (), and a distal end portion main body () that has a signal cable () connected to the ultrasonic vibrator, in which the storing portion () is disposed at a position offset in a second direction orthogonal to a first direction from a position where the cable insertion hole () is provided, the storing portion () has a cable introducing portion () that introduces the signal cable () into the cable insertion hole (), and the cable introducing portion () has a guiding surface () in which a width of the storing portion () in the second direction gradually increases toward a proximal end side, and a manufacturing method thereof.

Ultrasonic endoscope and manufacturing method of ultrasonic endoscope

An ultrasound endoscope includes an insertion part including a distal end part having an ultrasound transducer array of ultrasound transducers, a cable inserted into the insertion part, and a substrate, including electrode pads, that electrically connects the ultrasound transducers and the cable, and is disposed in the distal end part. The cable has a non-coaxial cable including a first cable bundle consisting of signal wires and ground wires, and a first shield layer with which the first cable bundle is coated, and an outer coat with which a second cable bundle consisting of the non-coaxial cables is coated. Each first cable bundle is individually led out from the cable, and each signal wire of the first cable bundle is led out and electrically bonded to the corresponding electrode pad. The ultrasound endoscope further includes a fixing part that fixes relative positions of the substrate and each first cable bundle.

Ultrasound endoscope

There is provided is an endoscope that can improve the cleanliness of a peripheral portion of an elevator. An endoscope () includes an insertion part () that is provided with a treatment tool insertion channel (), a distal end portion main body (), an elevator housing portion () that is provided in the distal end portion main body () and is open in a first direction, a treatment tool outlet () that is open to an inside of the elevator housing portion () and communicates with the treatment tool insertion channel (), and an elevator (). The elevator () has a first surface () and a second surface () inside a facing region facing the treatment tool outlet () in a state where the elevator is positioned at an elevated position. The first surface () is provided to be inclined to an opening () side of the elevator housing portion () with respect to a direction of an axis (A) of the treatment tool insertion channel (), and the second surface () is provided to be inclined to an opposite side to the opening () side of the elevator housing portion () with respect to the axis (A) of the treatment tool insertion channel ().

There is provided an endoscope capable of suppressing the degradation of a distal-end-part body over time that is caused by the sandwiching of a treatment tool. An endoscope includes a distal-end-part body that is provided at a distal end of an insertion unit. The distal-end-part body includes an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis of the insertion unit, a lead-out portion that includes a treatment tool outlet opened into the elevator-housing space, and an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool. The elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space. An opposite wall portion, which is opposite to the guide surface in a case where the elevator is in the standing position, of the opening wall portion is made of a material harder than that of all other wall portions other than the opposite wall portion.

An operation method of an ultrasound diagnostic apparatus includes executing one or more imaging series of steps with an ultrasound transducer; and applying a polarization processing to the ultrasound transducer one or more of before, after, and interleaved between the one or more imaging series of steps, where the polarization processing is separate from the one or more imaging series of steps.

Growing community of inventors

Ashigarakami-gun, Japan

Yasuhiko Morimoto