Abstract: An ultrasound image generating apparatus is disclosed, which includes a signal output unit configured to be connected to an ultrasound transducer that transmits ultrasound based on a drive signal toward a subject and generates a detection signal based on the ultrasound reflected from the subject, and the signal output unit is configured to output the drive signal to the ultrasound transducer. The signal output unit includes a plurality of pulsers that each output a pulse-like drive signal, and are connected in parallel to the ultrasound transducer, and a buffer that is connected to input sides of the pulsers, and stabilizes a signal to be input into each of the pulsers.

Abstract: Provided is a medical device including: a first elongated body; an electrode that is fixed to the annular expansion portion of the first elongated body; a second elongated body that has a distal portion and a proximal portion, a first lumen communicating from the distal portion to the proximal portion, and a second lumen parallel to the first lumen at the distal portion; and an ultrasound element that is configured to move inside the first lumen of the second elongated body in an axial direction, in which the first elongated body is inserted into the second lumen, and the linear portion of the first elongated body is positioned in a direction orthogonal to the axial direction of the ultrasound element, and the ultrasound element receives ultrasound reflected from the first elongated body and ultrasound reflected from a body-cavity around the second elongated body.

Abstract: A catheter includes a sheath main body portion, a first lumen, a sheath distal end portion, and a second lumen. The sheath main body portion is inserted into an organism. The first lumen is a passage provided in the sheath main body portion and through which a guide wire for guiding the sheath main body portion in an organism can be passed. The sheath distal end portion is provided on a lateral side of a distal end portion of the sheath main body portion. The second lumen is a passage different from the first lumen, provided in the sheath distal end portion, and through which a guide wire can be passed. The catheter can have both ease of exchange of catheter, which is the merit of an RX type catheter, and distal end pushing force transmission performance (pushability), which is the merit of an OTW type catheter.

Abstract: A catheter includes a sheath main body portion, a first lumen, a sheath distal end portion, and a second lumen. The sheath main body portion is inserted into an organism. The first lumen is a passage provided in the sheath main body portion and through which a guide wire for guiding the sheath main body portion in an organism can be passed. The sheath distal end portion is provided on a lateral side of a distal end portion of the sheath main body portion. The second lumen is a passage different from the first lumen, provided in the sheath distal end portion, and through which a guide wire can be passed. The catheter can have both ease of exchange of catheter, which is the merit of an RX type catheter, and distal end pushing force transmission performance (pushability), which is the merit of an OTW type catheter.