US 12,185,919 B2
Endoscope apparatus and method of operating endoscope apparatus
Momoko Yamanashi, Tachikawa (JP); Kazuhiko Hino, Hachioji (JP); and Takeo Suzuki, Hachioji (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Tokyo (JP)
Filed on Sep. 17, 2020, as Appl. No. 17/023,780.
Application 17/023,780 is a continuation of application No. PCT/JP2019/003003, filed on Jan. 29, 2019.
Claims priority of application No. 2018-052514 (JP), filed on Mar. 20, 2018.
Prior Publication US 2021/0076913 A1, Mar. 18, 2021
Int. Cl. A61B 1/015 (2006.01); A61B 1/00 (2006.01); A61B 1/018 (2006.01); A61B 1/12 (2006.01); A61B 1/31 (2006.01)
CPC A61B 1/015 (2013.01) [A61B 1/00082 (2013.01); A61B 1/00089 (2013.01); A61B 1/018 (2013.01); A61B 1/126 (2013.01); A61B 1/31 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An endoscope apparatus comprising:
a first ballon configured to form a closed space;
an insertion section on which the first balloon is mounted, the insertion section being configured to define:
an opening; and
a flow passage communicating through the opening with an inside of the closed space;
a pump; and
a controller configured to:
control the pump to feed a fluid through the flow passage into the closed space;
while the fluid is retained in the closed space formed by the first balloon, perform drive control of the pump to switch between applying pressurization and depressurization to the flow passage a plurality of times to repeatedly change a flow direction of the fluid retained in the closed space, wherein the fluid is suctioned through the flow passage and supplied through the flow passage repeatedly without the fluid draining out from both of the flow passage and the closed space; and
after performing the drive control, control the pump to discharge the fluid out of the closed space through the flow passage.