Device and method for rapid detection of blood viscosity based on ultrasonic guided wave of micro-fine metal tube

A device configured for detection of blood viscosity in a micro-fine metal tube based on a torsional guided wave, comprising a device shell, a blood sampling unit and a blood sampling electrical circuit, wherein the blood sampling unit and the blood sampling electrical circuit are arranged on the device shell and are electrically connected to each other;

• the blood sampling unit comprises an external blood sampling module, a sample transportation pipeline, a micro-fine metal tube (5) and a blood pump (7), the sample transportation pipeline comprises a sample feeding tube (4) and a sample discharging tube (6), the sample feeding tube (4) and the sample discharging tube (6) are respectively arranged on two sides of the device shell, an inlet of the sample feeding tube (4) is communicated with the outside of the device shell and is used for being connected with the external blood sampling module, an outlet of the sample feeding tube (4) is communicated with an inlet of the blood pump (7) through the micro-fine metal tube (5), an outlet of the blood pump (7) is communicated with an inlet of the sample discharging tube (6), and an outlet of the sample discharging tube (6) is communicated with the outside of the device shell;
• a magnetostrictive component is arranged outside the micro-fine metal tube (5), the magnetostrictive component comprises permanent magnets (17), a coil (18) and a magnetostrictive powder coating (19), the magnetostrictive powder coating (19) is coated on an outer surface of the micro-fine metal tube (5), the coil (18) is wound outside the magnetostrictive powder coating (19), and the permanent magnets (17) are symmetrically arranged on two sides outside the coil (18).