Radially sampling, forward looking ultrasound endoscope with an annular ultrasound probe to the radial scanning, which, on the front end of an insertion part is arranged, and with a front end member, in which a lens optics for examining a before the insertion part is accommodated in the examination zone and whose in the ultrasound probe, the front portion of a fitted a smaller outer diameter than the remaining part of the end, there being a plurality of flexible substrates for the to the ultrasonic probe related signal transmission from the ultrasonic probe according to the rear, in the end member in the axial direction, a substrate bore arcuate cross section is formed, by means of which the substrates are guided, and on the substrates with a wiring is formed by the insertion part are connected signal cable guided.
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