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System for measuring index of microcirculatory resistance (IMR) and coronary artery analysis system

An index and resistance technology, applied in the system of measuring microcirculation resistance index and coronary artery analysis system, can solve the problems of difficult operation and high risk

Pending Publication Date: 2019-10-29
SUZHOU RAINMED MEDICAL TECH CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a system for measuring microcirculatory resistance index and a coronary analysis system to solve the problems in the prior art that the pressure guide wire needs to be passed through the distal end of coronary artery stenosis for IMR measurement, and there are problems of difficult operation and high risk

Method used

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  • System for measuring index of microcirculatory resistance (IMR) and coronary artery analysis system
  • System for measuring index of microcirculatory resistance (IMR) and coronary artery analysis system
  • System for measuring index of microcirculatory resistance (IMR) and coronary artery analysis system

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Embodiment 1

[0123] Such as Figure 20 As shown, two positions of coronary angiography images taken for a patient; the body angle of the left picture is right anterior oblique RAO: 25° and head position CRA: 23°; the right picture is right anterior oblique RAO: 3° And head position CRA: 30°;

[0124] Such as Figure 21 As shown, the blood vessel length L value of the three-dimensional structure of the coronary artery=120mm; the generated three-dimensional structure of the coronary artery is as follows Figure 22 shown;

[0125] Blood vessel diameter D value = 2 ~ 4mm;

[0126] Such as Figure 23 as shown,

[0127]

[0128] Such as Figure 24 As shown, Pa=100mmHg;

[0129] Such as Figure 25 As shown, ΔP i = 7; therefore IMR = (100-7) x 120 / 590 = 18.9;

[0130]

[0131] Such as Figure 26 Shown, iFMR=(Pa'-ΔP' i )×L / V f =(93-7)×120 / 300=34.4.

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Abstract

The invention provides a system for measuring an index of microcirculatory resistance (IMR) and a coronary artery analysis system. The system for measuring the IMR comprises a three-dimensional modeling device, an invasive blood pressure sensor and an IMR measuring device, wherein the IMR measuring device is connected with the three-dimensional modeling device and the invasive blood pressure sensor; the three-dimensional modeling device is used for reading a coronary artery contrastographic picture, measuring the blood vessel length L within a heartbeat period area and obtaining a three-dimensional structure of a coronary artery in a three-dimensional modeling mode; the invasive blood pressure sensor is used for measuring coronary artery inlet pressure Pa; the IMR measuring device is usedfor measuring pressure drop [delta]P and the blood flow velocity Vh from a coronary artery inlet to the coronary artery narrow far end in the maximum congestion state of a blood vessel and calculatingthe IMR, wherein IMR=(Pa-[delta]Pi)*L / Vh. The system does not need to penetrate through the coronary artery narrow far end, and thus the surgery difficulty and risks are lowered; and the IMR is measured through the contrastographic picture, the blank of the industry is filled up, and operation is easier.

Description

technical field [0001] The invention relates to the technical field of coronary artery medicine, in particular to a system for measuring microcirculation resistance index and a coronary analysis system. Background technique [0002] The influence of abnormal coronary microcirculation on myocardial ischemia has gradually attracted attention. The coronary system is composed of epicardial coronary arteries and microcirculation. [0003] Generally speaking, epicardial coronary stenosis greater than or equal to 50% can lead to myocardial insufficiency, and the clinical diagnosis is coronary heart disease. However, clinical studies have shown that abnormal coronary microcirculation may also lead to myocardial insufficiency. [0004] Coronary microcirculation refers to the blood circulation between arterioles and venules, which is the place where blood and tissue cells exchange substances. Studies have shown that although the coronary blood flow reaches TIMI3 grade after successf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/026G16H30/20G06F17/50G06F16/22
CPCA61B5/026G16H30/20A61B6/504A61B6/507A61B6/481A61B6/466G06T7/0016G06T2207/30101G06T2207/30048G06T2207/30104G06T2207/30172G06T2207/10016G06T2207/20224G06T2207/30021G06T2207/20036A61B5/0215A61B5/02007A61B6/5241A61B6/5205A61B6/463G06T7/215A61M5/007G06T7/0012G06T17/00G06T7/62G06T2210/41
Inventor 刘广志王之元戴威曹文斌
Owner SUZHOU RAINMED MEDICAL TECH CO LTD
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