US 12,223,144 B2
Detection device and infusion pump
Shohei Sasaki, Chigasaki (JP); and Koji Hagi, Hadano (JP)
Assigned to TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed by TERUMO KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 7, 2022, as Appl. No. 17/939,905.
Application 17/939,905 is a continuation of application No. PCT/JP2021/007200, filed on Feb. 25, 2021.
Claims priority of application No. 2020-042271 (JP), filed on Mar. 11, 2020.
Prior Publication US 2023/0004256 A1, Jan. 5, 2023
Int. Cl. G06F 3/042 (2006.01)
CPC G06F 3/0425 (2013.01) [G06F 3/0421 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A detection device comprising:
an irradiation unit configured to emit an infrared ray toward an infusion tube;
an imaging unit configured to generate a captured image obtained by imaging the infusion tube irradiated with the infrared ray by the irradiation unit; and
a control unit configured to:
determine a light intensity value of each pixel included in the captured image,
specify high light intensity regions having a light intensity value equal to or more than a predetermined threshold as regions including opposing side wall portions of the infusion tube captured in the captured image based on a light intensity distribution in the captured image, and
detect blockage of the infusion tube and air bubbles in the infusion tube based on the specified high light intensity regions.