US 12,102,746 B2
Connection structure and blood purifying device
Hikaru Ito, Shizouka (JP); Fumitoshi Henmi, Shizouka (JP); Takayuki Suzuki, Shizouka (JP); and Masahiro Toyoda, Shizouka (JP)
Assigned to Nikkiso Company Limited, Tokyo (JP)
Appl. No. 17/311,058
Filed by Nikkiso Company Limited, Tokyo (JP)
PCT Filed Dec. 2, 2019, PCT No. PCT/JP2019/047010
§ 371(c)(1), (2) Date Jun. 4, 2021,
PCT Pub. No. WO2020/116385, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 2018-228862 (JP), filed on Dec. 6, 2018.
Prior Publication US 2022/0016327 A1, Jan. 20, 2022
Int. Cl. A61M 1/36 (2006.01); A61M 1/34 (2006.01); A61M 39/10 (2006.01); A61M 39/20 (2006.01)
CPC A61M 1/367 (2013.01) [A61M 1/3609 (2014.02); A61M 39/10 (2013.01); A61M 39/20 (2013.01); A61M 1/3413 (2013.01); A61M 2039/1072 (2013.01); A61M 2205/3331 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A connection structure, comprising:
a chamber comprising a hollow housing, a diaphragm dividing an inside of the hollow housing into a first space and a second space, and an output port outputting a gas in the second space with deformation of the diaphragm caused by pressure of a fluid flowing into the first space;
a connection part comprising a coupling connected to the output port and being attached to a pressure detection device comprising a pressure sensor for detecting pressure of the gas output from the coupling, wherein the coupling includes a first stopper and a second stopper; and
a seal member being sandwiched between an outer surface of the output port and an inner surface of the coupling and moving while changing a sealing position when connecting or extracting the chamber to/from the connection part, the seal member fits into a space surrounded by the inner surface of the coupling, the first stopper, and the second stopper.