Forward viewing and radial scanning ultrasonic endoscope
AssigneeAsahi Kogaku Kogyo Kabushiki Kaisha
InventorsKenichi Ohara, Toshiyuki Hashiyama
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Abstract
In a radial scan, forward viewing ultrasonic endoscope, centering mating portions (46, 32) that permit the outer surface (45) of ultrasonic probe (4) and the outer surface (31) of tip body (3) to meet flush with each other at the boundary are formed in ultrasonic probe (4) and in tip body (3) and the gap between the inner peripheral surface (41a) of ultrasonic probe (4) and mating surface of the front half (33) of tip body (3) is formed to be larger than the gap between centering mating portions (46, 32).
Claims2
A forward viewing and radial scanning ultrasonic endoscope having an ultrasonic probe that is formed in annular shape to perform radial scan and that is provided at the tip of an insertion portion and a tip body that is fitted with objective optics for examining the area ahead of said insertion portion and that has a smaller outside diameter in the front half that is fitted into said ultrasonic probe, wherein centering mating portions that permit the outer surface of said ultrasonic probe and that of said tip body to meet flush with each other at the boundary are formed in said ultrasonic probe and said tip body and the gap between the inner peripheral surface of said ultrasonic probe and the mating surface of the front half of said tip body is formed to be larger than the gap between said centering mating portions.
Dependencies are inferred from the claim text.