US 12,070,314 B2
Oxygen measurement device and oxygen measurement system
Satoru Suehara, Kanagawa (JP); and Akihiro Takahashi, Kanagawa (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 14, 2022, as Appl. No. 17/864,549.
Application 17/864,549 is a division of application No. 16/584,979, filed on Sep. 27, 2019, granted, now 11,406,302.
Application 16/584,979 is a continuation of application No. PCT/JP2018/008248, filed on Mar. 5, 2018.
Claims priority of application No. 2017-066646 (JP), filed on Mar. 30, 2017.
Prior Publication US 2022/0346686 A1, Nov. 3, 2022
Int. Cl. A61B 5/20 (2006.01); A61B 5/00 (2006.01); A61B 5/01 (2006.01); A61B 5/145 (2006.01); A61B 5/1459 (2006.01); A61M 25/00 (2006.01)
CPC A61B 5/202 (2013.01) [A61B 5/01 (2013.01); A61B 5/14507 (2013.01); A61B 5/1459 (2013.01); A61B 5/208 (2013.01); A61B 5/6852 (2013.01); A61B 5/6853 (2013.01); A61B 5/743 (2013.01); A61M 25/0097 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method comprising:
positioning a distal portion of an elongated urethral catheter in a bladder of a living body, the elongated urethral catheter comprising a wall surrounding a urethral catheter lumen that extends from a distal end of the elongated urethral catheter to a proximal end of the elongated urethral catheter;
urine from the bladder being introduced into the urethral catheter lumen by way of a urethral catheter port passing through the wall of the elongated urethral catheter;
the urine in the urethral catheter lumen flowing toward the proximal end of the elongated urethral catheter and entering a lumen in a hub that is connected to the proximal end of the elongated urethral catheter, the hub being comprised of a wall that surrounds the lumen in the hub, a first sensor mounted at the wall of the hub, a second sensor mounted at a wall of the hub and a third sensor mounted at a wall of the hub;
detecting oxygen in the urine flowing in the lumen of the hub based on an output signal from the first sensor resulting from the urine passing the first sensor before reaching the second sensor and before reaching the third sensor;
detecting temperature of the urine flowing in the lumen of the hub based on an output signal from the second sensor resulting from the urine passing the second sensor after passing the first sensor but before reaching the third sensor; and
detecting urine flow rate of the urine flowing in the lumen of the hub based on an output signal from the third sensor resulting from the urine passing the third sensor after passing both the first sensor and the second sensor;
the hub including an interlock portion, a proximal portion of the interlock portion including a connection section that is fitted to a distal portion of a tube connected to a urine collection bag, the connection section including a first protruding portion that protrudes radially outwardly and that is fixed to an extension portion that extends axially away from the first protruding portion in a proximal direction, the interlock portion also including a second protruding portion that protrudes axially away from the first protruding portion in the proximal direction, the second protruding portion including a lumen through which flows the urine that has flown past the sensor.