Thrombelastography device, heating apparatus, blood coagulation analysis system and rotational angle measurement method
Inventors
Xiao, Jian • Chen, Aiqin • YU, Bangzhong • Jiang, Feng
Assignees
Suzhou Pinnovation Medical Science And Technology Ltd Co • Haemonetics Corp
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Publication Number
US-11927587-B2
Publication Date
2024-03-12
Expiration Date
Abstract
A thrombelastography device, a heating apparatus, a blood coagulation analysis system, and a rotational angle measurement method are disclosed. The thrombelastography device consists of a plurality of thrombelastography device splits (2) that are horizontally arranged in parallel. The thrombelastography device split (2) comprises a worktable (4), a rack (5), a test bar (6), a tester (8), and a processor (9). The thrombelastography device overcomes the defect in the prior art that the measurement result of a thrombelastography device is inaccurate. The amount of reflected light is used as a reference for thrombelastographic evaluation, and thus the result is more accurate.
Core Innovation
The invention relates to a thrombelastography device with a rotating sample container and a test bar. A fixed optical path uses a reflective surface on the rotating test bar so that light emitted and received through aligned through-holes is converted into coagulation parameters for higher accuracy.
The invention further provides a position correction device in which a test bar is supported by a rack, with a second end of the test bar placed in measured blood. The test bar rotates under a driving force of the measured blood, and at least two hair springs with opposite spiral directions generate an acting force that rotates the test bar back to a balanced position when the test bar rotates away from the balanced position.
The invention further includes low-friction jewel bearing and optional magnetic reduction of resistance for the rack and test bar support. The position correction device includes zero setting modules that correspond to respective hair springs and are connected to adjustable positions on the outer ring to adjust the balanced position.
Claims Coverage
The provided material includes one independent claim centered on a position correction device for a thrombelastography device. The core inventive feature is at least two hair springs with opposite spiral directions arranged between a test bar and a rack to generate an acting force that restores the test bar to a balanced position when displaced. Dependent claims add zero setting modules and device and method configurations incorporating the position correction device.
Balanced-position restoring force by opposite spiral hair springs
The position correction device comprises a test bar and a rack connected to a first end of the test bar, supports the test bar, and has a second end placed in measured blood; the test bar rotates under a driving force of the measured blood; at least two hair springs have an inner ring fixedly connected to an outer circumferential surface of the test bar and an outer ring fixedly connected to the rack; the spiral direction of a first hair spring is opposite to the spiral direction of a second hair spring; the device generates an acting force that rotates the test bar back to the balanced position.
Adjustable balanced position via zero setting modules
The position correction device includes at least two zero setting modules corresponding to respective hair springs, with one end fixed to a rack and the other end fixedly connected to adjustable positions on the outer ring of the hair spring to adjust the balanced position.
Thrombelastography device incorporating the position correction device
A thrombelastography device includes a rack, a test bar, and the position correction device.
Method using the restoring force in a thrombelastography workflow
A use method for a thrombelastography device where a test bar is supported by a rack with one end in measured blood, rotated by the blood, and a position correction device generates a restoring force when the test bar moves away from a balanced position.
Across the independent claim and its dependents, the core claim feature is a position correction device using at least two hair springs with opposite spiral directions connected between the test bar and the rack to generate an acting force that restores the test bar to a balanced position when displaced. Dependent features include zero setting modules for adjusting the balanced position and device and method claims that incorporate this restoring-force functionality in thrombelastography.
Stated Advantages
Higher accuracy of coagulation parameters by using a fixed optical path with a reflective surface on the rotating test bar.
Restores the test bar back to the balanced position when the test bar rotates away from a balanced position.
Documented Applications
Blood coagulation analysis system combining the heating apparatus with the thrombelastography device and a described workflow, producing thromboelastogram/coagulation parameters.
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