Patent ID: 11927587
Assignee: HAEMONETICS CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A position correction device for a thrombelastography device, wherein the position correction device comprises:
a test bar;
a rack, the rack is connected to a first end of the test bar and supports the test bar, a second end of the test bar is placed in measured blood; the test bar is configured to rotate under a driving force of the measured blood; and
at least two hair springs, an inner ring of each of the at least two hair springs is fixedly connected to an outer circumferential surface of the test bar, and an outer ring of each of the at least two hair springs is fixedly connected to the rack, the spiral direction of a first hair spring of the at least two hair springs from the inner ring to the outer ring is opposite to the spiral direction of a second hair spring of the at least two hair springs from the inner ring to the outer ring, wherein
the position correction device is configured to generate, when the test bar rotates away from a balanced position, an acting force for rotating the test bar back to the balanced position.