Device and method for measuring fractional flow reserve of blood
A technology for fractional blood flow reserve and a measurement method, which is applied in the field of devices for measuring fractional blood flow reserve, can solve the problem of low FFR accuracy, and achieves the effect of improving accuracy
Pending Publication Date: 2019-10-11
THE HONG KONG POLYTECHNIC UNIV
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Problems solved by technology
[0003] However, the accuracy of FFR obtained by using this traditional device for measuring fractional blood flow reserve FFR is not high
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[0033] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
[0034] Secondly, the present invention is described in detail in combination with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional view showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, and it should not be limited here. The protection scope of the present invention. In addition, the three-dimensional space dimensions of length, width and depth should be included in actual...
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The embodiment of the invention discloses a device and method for measuring a fractional flow reserve of blood. Because the diameter of an optical fiber component containing sub-reflecting units is small, the optical fiber component can enter a narrow part of a to-be-measured artery blood vessel, correspondingly one part of the N sub-reflecting units contained in the optical fiber component are located at a narrow part close to the to-be-measured artery blood vessel, the other part of the sub-reflecting units enter the narrow part of the to-be-measured artery blood vessel, and that is to say that the distance between one part of the sub-reflecting units and the narrow part of the to-be-measured artery blood vessel is short. Therefore, the pressure values of the sub-reflecting units close to the narrow part of the to-be-measured artery blood vessel and the pressure value of the inside of the narrow part of the to-be-measured artery blood vessel can be precisely measured, and thus the precision of the fractional flow reserve (FFR) of blood is improved.
Description
technical field [0001] The invention relates to the technical field of biomedical engineering, in particular to a device for measuring blood flow reserve fraction and a measuring method thereof. Background technique [0002] Fractional Flow Reserve (FractionalFlow Reserve, FFR) is a technique used in coronary catheterization to measure the pressure difference at the coronary artery stenosis. The traditional device for measuring FFR includes two pressure sensors, one of which is located at the tip of the catheter, and the other is set 3mm away from the tip of the pressure line, and is connected to the processor through the pressure line. During the FFR measurement, the pressure sensor set at a distance of 3mm from the tip of the pressure line is controlled to enter the stenosis of the arterial vessel, while the pressure sensor located at the tip of the catheter is controlled to be located at the aorta of the arterial vessel, and then the two The pressure difference between t...
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IPC IPC(8): A61B5/0215A61B5/02A61B8/08A61B8/12
CPCA61B5/02028A61B5/02154A61B8/0891A61B8/12
Inventor 戴吉岩黄智文丘希文陈少芬
Owner THE HONG KONG POLYTECHNIC UNIV