Vascular imaging device capable of calculating blood flow velocity

Abstract

A vascular imaging device capable of calculating blood flow velocity includes a main body, multiple near-infrared irradiation units, an infrared sensing unit, a projection unit, a calibration module, and a control module. The device is characterized by the control module comprising an artificial intelligence analysis unit, and the infrared sensing unit comprising a diffuse correlation spectroscopy (DCS) sensing element and a near-infrared spectroscopy (NIRS) sensing element. The artificial intelligence analysis unit calculates blood flow velocity by analyzing signal changes from the infrared sensing units. For example, by integrating the scattered light correlation signal from the DCS and the vascular location signal from the NIRS, it calculates the blood flow velocity within a vascular region and can further convert the blood flow velocity into a relative blood flow velocity change index for long-term health tracking. This invention assists users in observing vascular location and blood temperature while also estimating blood flow velocity within the vessels. It allows for early detection of slowed blood flow due to vascular obstruction or other reasons, enabling users to receive further treatment.

Claims

1. A vascular imaging device capable of calculating blood flow velocity, comprising a body, a plurality of near-infrared irradiation units, an infrared sensing unit, a projection unit, a calibration module, and a control module, characterized in that the control module includes an artificial intelligence analysis unit, the infrared sensing unit includes a diffuse correlation spectral sensing element and a near-infrared spectral sensing element, and the artificial intelligence analysis unit calculates a blood flow velocity by analyzing the signal changes of the infrared sensing unit.

2. The vascular imaging device for calculating blood flow velocity as described in claim 1, wherein each of the near-infrared irradiation units, the infrared sensing units, and the projection units is disposed on one side of the main body, and the opposite side of the main body is provided with a plurality of operation buttons and a display screen, and the control module is disposed within the main body and electrically connected to each of the near-infrared irradiation units, the infrared sensing units, the projection units, the calibration module, the display screen, and each of the operation buttons.

3. The blood flow velocity calculating vascular imaging device as described in claim 1, wherein the artificial intelligence analysis unit analyzes the signal of the infrared sensing unit and segments at least one blood vessel region by using a convolutional neural network, and then calculates the signal displacement vector in the blood vessel region using a particle image velocimetry model and converts the blood flow velocity according to the sampling time interval, the diffuse correlation spectral sensing element includes at least one single-photon avalanche diode, the sensing frequency of the diffuse correlation spectral sensing element is greater than or equal to 100 times per second, and the near-infrared spectral sensing element includes at least one photodiode.

4. The vascular imaging device for calculating blood flow velocity as described in claim 3, wherein the formula for calculating the blood flow velocity by the artificial intelligence analysis unit is as follows.

5. The vascular imaging device for calculating blood flow velocity as described in claim 1, wherein the projection unit is a digital projection technology unit.

6. The vascular imaging device for calculating blood flow velocity as described in claim 1, wherein the control module is electrically connected to a cloud transmission unit.

7. The vascular imaging device for calculating blood flow velocity as described in claim 2, wherein when the blood flow velocity is less than a predetermined value stored in the control module, the control module displays a warning message on the display screen.

8. The vascular imaging device for calculating blood flow velocity as described in claim 2, wherein the infrared sensing unit and the projection unit are disposed within a transparent window on one side of the main body, and each of the near-infrared irradiation units is disposed at opposite ends of the transparent window.

9. The vascular imaging device for calculating blood flow velocity as described in claim 1, wherein each of the near-infrared irradiation units irradiates near-infrared light with wavelengths of 808 and 940 nanometers.

10. A vascular imaging device capable of calculating blood flow velocity as described in claim 7, wherein the predetermined value is 1.5 to 6 cm per minute.

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