US 12,285,599 B2
Tube pump
Kenshi Yoshimoto, Kanazawa (JP); and Kosho Matsuzaki, Kanazawa (JP)
Assigned to SHIBUYA CORPORATION, Kanazawa (JP)
Filed by SHIBUYA CORPORATION, Kanazawa (JP)
Filed on May 30, 2023, as Appl. No. 18/325,310.
Claims priority of application No. 2022-098158 (JP), filed on Jun. 17, 2022.
Prior Publication US 2023/0405202 A1, Dec. 21, 2023
Int. Cl. A61M 60/835 (2021.01); A61M 60/279 (2021.01); F04B 43/12 (2006.01)
CPC A61M 60/835 (2021.01) [F04B 43/1253 (2013.01); A61M 60/279 (2021.01)] 3 Claims
OG exemplary drawing
 
1. A tube pump comprising:
a housing which houses a flexible tube is arranged along a lateral wall formed to have a substantially horseshoe shape;
a rotor rotatably provided inside the lateral wall of the housing; and
a roller provided for the rotor so as to move along the lateral wall, wherein
the lateral wall is provided with a blockage section having an arc with a prescribed radius centered on a rotation center of the rotor and the blockage section presses and blocks the flexible tube between the roller and the lateral wall, and a separation section provided on a downstream side of the blockage section, the separation section being shaped so as to gradually distance away from the rotation center;
the lateral wall is provided, between the blockage section and the separation section, with a pressure release section having an arc centered on the rotation center of the rotor having a constant radius larger than the prescribed radius of the blockage section; and
while the roller is moving through the pressure release section, a communication opening is formed in the flexible tube pressed by the roller so as to allow communication between apart of the flexible tube positioned on an upstream side of the roller and a part of the flexible tube positioned on a downstream side of the roller, while a size of the communication opening is maintained to be constant.