US 12,023,437 B2
Insufflation system and insufflation control method
Koji Yamaoka, Hamura (JP); Yuma Kasuya, Fuchu (JP); Shinya Torii, Tokyo (JP); Keita Kimura, Hachioji (JP); Kunitoshi Hiraga, Tama (JP); and Takefumi Uesugi, Tachikawa (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Tokyo (JP)
Filed on Jun. 3, 2021, as Appl. No. 17/337,617.
Application 17/337,617 is a continuation of application No. PCT/JP2018/044689, filed on Dec. 5, 2018.
Prior Publication US 2021/0290864 A1, Sep. 23, 2021
Int. Cl. A61M 13/00 (2006.01)
CPC A61M 13/003 (2013.01) [A61M 2202/0225 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3337 (2013.01); A61M 2205/50 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An insufflation system comprising:
a processor configured to:
calculate a first target gas feeding flow rate based on a difference between a body cavity internal pressure and an insufflation target pressure of a body cavity;
determine whether the first target gas feeding flow rate is lower than a threshold gas feeding flow rate; and
in response to determining that the first target gas feeding flow rate is lower than the threshold gas feeding flow rate, feed gas at a second target gas feeding flow rate by controlling a first valve provided at a gas feeding conduit and a second valve provided at a suction conduit,
wherein the processor is configured to cause the suction conduit to suction at a first suction flow rate, and
wherein the second target gas feeding flow rate is obtained by adding the first suction flow rate to the first target gas feeding flow rate.