US 12,138,120 B2
Ultrasonic endoscope
Noboru Kinomoto, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Sep. 1, 2022, as Appl. No. 17/900,877.
Application 17/900,877 is a continuation of application No. PCT/JP2021/011306, filed on Mar. 19, 2021.
Claims priority of application No. 2020-055657 (JP), filed on Mar. 26, 2020.
Prior Publication US 2022/0409175 A1, Dec. 29, 2022
Int. Cl. A61B 8/00 (2006.01); A61B 1/00 (2006.01); A61B 1/015 (2006.01); A61B 1/06 (2006.01); A61B 8/12 (2006.01); A61B 90/70 (2016.01)
CPC A61B 8/445 (2013.01) [A61B 1/00082 (2013.01); A61B 1/015 (2013.01); A61B 1/06 (2013.01); A61B 8/12 (2013.01); A61B 8/4494 (2013.01); A61B 2090/701 (2016.02)] 5 Claims
OG exemplary drawing
 
1. A radial type ultrasonic endoscope in which an ultrasound oscillator is provided at a distal end portion of an insertion portion and in which an observation system and an illumination system are disposed closer to a distal end side than the ultrasound oscillator,
wherein the distal end portion includes
a balloon attachment portion for attachably and detachably attaching a balloon to the distal end portion, the balloon attachment portion including a first balloon groove that is provided over an outer periphery of the distal end portion at least on a proximal end side of the ultrasound oscillator, and
a communication path for supply or suction of a fluid with respect to an inner space of the balloon attached to the distal end portion, the communication path including an entrance and exit way that is open into the inner space of the balloon,
the entrance and exit way of the communication path is formed to be diagonally inclined with respect to a longitudinal axis of the insertion portion,
the first balloon groove includes a shallow groove portion that is formed to have a groove depth smaller than other portions in a circumferential direction of the distal end portion, and
the entrance and exit way of the communication path is provided in an internal region of the distal end portion where the shallow groove portion is formed.