| 摘要 |
<p>PURPOSE:To certainly close a blood recirculation circuit and to prevent the recirculation of blood in a human body in such a state that air bubbles are mixed with blood, by mounting a mechanism, which detects whether the transparent hose for the blood recirculation circuit is mounted, to a blood recirculation circuit clamp part. CONSTITUTION:A blood recirculation circuit mount mechanism 5 is constituted by arranging a light emitting element 5a and a photodetector 5b so as to hold a groove part 9 therebetween and the light emitted from the light emitting element 5a is received by the photodetector 5b and, on the basis of the intensity of said light, it is detected whether a transparent hose 1 is mounted, through the detection circuit 5c of a detection circuit and, when the transparent hose 1 is not mounted on the groove part 9, this state is transmitted to an alarm 10 to generate an alarm sound to urge caution on a handling person. A blood recirculation circuit closing mechanism 4 operates a solenoid 11 by an electric signal informing whether air bubbles are generated in an air bubble detection part 3 to attract a crank shaft lever 12 and the transparent hose 1 is pressed by a lever 12 to close the transparent hose 1 for the blood recirculation circuit.</p> |
