Title:
ULTRASONIC ENDOSCOPE DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/154717
Kind Code:
A1
Abstract:
This ultrasonic endoscope device includes a diagnostic ultrasonic element and a therapeutic ultrasonic element (4) which are arranged on the distal end of an insertion portion and adjacent to each in a direction along the longitudinal axis of the insertion portion. The therapeutic ultrasonic element (4) has a plurality of piezoelectric materials (41) arranged substantially in the direction along the longitudinal axis, each having a concave surface (41a) that forms an emission surface (4a) which curves in a direction intersecting the longitudinal axis. Each concave surface (41a) has a radius of curvature equal to the distance (r1, r2, r3) from that concave surface (41a) to a point (O) on a plane (P) that includes a normal line (N) to the center of the emission surface (4a) and substantially bisects the emission surface (4a) in the direction intersecting the longitudinal axis, and the point (O) is positioned on the diagnostic ultrasonic element side of the normal line (N).
Inventors:
ITO HIROSHI (JP)
Application Number:
PCT/JP2017/007136
Publication Date:
August 30, 2018
Filing Date:
February 24, 2017
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B8/14
Domestic Patent References:
| WO2006032059A2 | 2006-03-23 |
Foreign References:
| JP2007152094A | 2007-06-21 | |||
| JP2014176429A | 2014-09-25 | |||
| US20110034808A1 | 2011-02-10 |
Attorney, Agent or Firm:
UEDA, Kunio et al. (JP)
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