US 11,986,343 B2
Ultrasonic endoscope
Yasuhiko Morimoto, Ashigarakami-gun (JP); Toshizumi Tanaka, Ashigarakami-gun (JP); and Shozo Iyama, Ashigarakami-gun (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Nov. 8, 2022, as Appl. No. 18/053,665.
Application 18/053,665 is a continuation of application No. 16/576,476, filed on Sep. 19, 2019, granted, now 11,553,894.
Application 16/576,476 is a continuation of application No. PCT/JP2018/002301, filed on Jan. 25, 2018.
Claims priority of application No. 2017-071146 (JP), filed on Mar. 31, 2017.
Prior Publication US 2023/0090335 A1, Mar. 23, 2023
Int. Cl. A61B 8/00 (2006.01); A61B 8/12 (2006.01); A61B 8/08 (2006.01)
CPC A61B 8/12 (2013.01) [A61B 8/4422 (2013.01); A61B 8/445 (2013.01); A61B 8/4494 (2013.01); A61B 8/0841 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An ultrasonic endoscope comprising:
an ultrasonic transducer that has an ultrasonic vibrator;
a distal end portion body that is disposed continuously with a proximal end side of the ultrasonic transducer;
an erecting base housing portion that is disposed in the distal end portion body and that has an opening whose opening direction is one side in a first direction that is perpendicular to an axial direction of the distal end portion body or whose opening direction is a direction that has a component toward one side in the first direction and a component toward a distal end side in the axial direction of the distal end portion body;
a treatment tool lead-out port that communicates with an inside of the erecting base housing portion and from which a treatment tool is led out;
an erecting base that is disposed in the inside of the erecting base housing portion and that changes a lead out direction of the treatment tool led out from the treatment tool lead-out port; and
a cleaning communication hole that is formed in a wall surface on a side opposite to a side where the opening of the erecting base housing portion is disposed and that communicates with an outside,
wherein the cleaning communication hole includes at least two inner standing wall surfaces of the cleaning communication hole that intersect with the axial direction, and
of the at least two inner standing wall surfaces of the cleaning communication hole, the inner standing wall surface of the cleaning communication hole on a proximal end side of the cleaning communication hole and a region on an other side of the treatment instrument outlet in the first direction are on a same plane.