Ventricular assist device, control unit thereof and medical equipment

By acquiring the pump flow rate and Hall sensor voltage curve of the ventricular assist device, and calculating characteristic values ​​to identify thrombi, the problem of thrombus coagulation in the gap between the suspension impeller and the pump casing is solved, realizing real-time thrombus monitoring and improving the safety of the ventricular assist device.

CN122440980APending Publication Date: 2026-07-24SHENZHEN CORE MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202610868370.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-16
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

When existing mechanical circulation support devices are in operation, the high shear force generated by the high-speed rotation of the impeller can damage the blood, causing blood clots to coagulate in the bearing gap between the suspended impeller and the pump casing, affecting blood compatibility and pump operation.

Method used

By acquiring the pump flow curve of the ventricular assist device and the output voltage curve of the Hall sensor, characteristic values ​​are calculated to determine whether there is a thrombus in the device, thereby achieving real-time monitoring of thrombi and avoiding reliance on external equipment.

Benefits of technology

It enables real-time monitoring of thrombi without relying on external devices, increasing user safety and improving the reliability of ventricular assist devices.

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Abstract

The invention provides a ventricular assist device and a control unit and medical equipment thereof, the control unit obtains a target pumping flow curve and a plurality of target voltage curves, and the target pumping flow curve is a pumping flow curve of the ventricular assist device during operation within a first duration; the target voltage curve is an output voltage curve of the Hall sensor within the first duration; calculating a first feature and a second feature according to the target pumping flow curve and the plurality of target voltage curves; and judging whether thrombus exists in the ventricular assist device according to the first feature and the second feature. According to the method, the features capable of judging the thrombus are calculated from the operation parameters of the ventricular assist device, whether the thrombus exists in the current ventricular assist device or not is determined according to the size of the features, real-time monitoring of the thrombus can be achieved under the condition of not depending on external equipment, and the safety of a user is improved.
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