Patent ID: 11898967
Assignee: FENWAL, INC.
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 10:
11. A method of determining whether an umbilicus of an umbilicus-driven centrifuge is experiencing an irregularity, the method comprising:
rotating a yoke about a rotational axis so as to orbit a midsection of an umbilicus around the rotational axis at a first speed, thereby causing a separation chamber to rotate at a second speed that is approximately double the first speed;
emitting a light toward the separation chamber;
receiving at least a portion of said light after said light has passed through the separation chamber;
determining a period or frequency at which said at least a portion of said light is received;
comparing said period or frequency to an expected period or frequency; and
determining that the umbilicus is experiencing an irregularity when the period is different from the expected period or the frequency is different from the expected frequency.