Title:
ULTRASONIC ENDOSCOPE AND DISTAL END UNIT THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/153798
Kind Code:
A1
Abstract:
Provided are an ultrasonic endoscope capable of generating an ultrasound image at a proximal end portion of an ultrasonic transducer and a distal end unit therefor. The outer circumferential surface of a distal end body comprises: a first surface that is provided proximal to an ultrasonic transducer, and extends along the longitudinal axis of an insertion part; a second surface that is provided proximal to the first surface, extends along the longitudinal axis, and is located on one side of the first surface in a first direction perpendicular to the longitudinal axis; and a stepped surface connecting the proximal side of the first surface and the distal side of the second surface. When the direction perpendicular to both the longitudinal axis and the first direction is defined as the second direction, the angle indicating the range of ultrasound irradiation from the ultrasonic transducer when the distal end body is viewed from the second direction side is defined as the effective angle, and the intersection point of the ultrasonic transducer and a tangent line in contact with the ultrasonic transducer and in contact with the stepped surface at an extreme point in one direction is defined as a first intersection point, the first intersection point is included in the one-third region on the proximal side of the effective angle.
Inventors:
SHIMOYAMA YUTO (JP)
Application Number:
PCT/JP2021/047234
Publication Date:
July 21, 2022
Filing Date:
December 21, 2021
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
A61B8/12; A61B1/00; A61B1/07
Domestic Patent References:
| WO2018003322A1 | 2018-01-04 | |||
| WO2019155665A1 | 2019-08-15 |
Foreign References:
| JP2002306489A | 2002-10-22 |
Attorney, Agent or Firm:
MATSUURA, Kenzo (JP)
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