mla-oct imaging catheter, mla-oct imaging system and mla-oct imaging method

Abstract

Disclosed are an MLA-OCT imaging catheter, an MLA-OCT imaging catheter calibration method, an MLA-OCT imaging system and an imaging method thereof. The MLA‑OCT imaging catheter includes an inner tube, an outer tube and a multi-core catheter connector, and the inner tube includes an optical fiber bundle and a microlens array. In the MLA-OCT imaging system, the light source is divided into sample light and reference light by the interferometer. The sample light enters the signal arm to reach the human tissue, and the reference light enters the reference arm to reach the optical delay line. For the optical signal, the reference arm is equipped with an optical delay line device. The MLA-OCT imaging method includes: the data processing device adjusts the position of the optical delay line according to the signal-to-noise ratio of the interference signal until the signal-to-noise ratio is the highest, and at this time the delay time value of the optical delay line of each optical fiber is its optical delay line calibration value , and stored in the MLA-OCT system; the MLA-OCT system automatically sets the reference arm length based on the optical delay line calibration value to detect interference signals; the retraction controller actuates the axial movement of the MLA-OCT imaging catheter for axial scanning, To create a three-dimensional space image of human tissue.

Description

technical field [0001] The invention relates to the technical field of medical endoscopic detection, in particular to an MLA-OCT imaging catheter, an MLA-OCT imaging system and an MLA-OCT imaging method. Background technique [0002] Coronary artery disease is the number one cause of death worldwide. Coronary artery disease can cause chest pain (angina), myocardial ischemia, and sudden cardiac death due to the buildup, rupture, and thrombus of atherosclerotic plaque. For those patients without sudden death or symptoms of chronic angina, appropriate plaque treatment includes PCI (Percutaneous Coronary Intervention, percutaneous coronary intervention). Cardiac interventional experts place stents through PCI to treat lesions. However, in recent years, many studies have found that cardiac stents have been abused, or at least overused, causing a lot of controversy. Doctors are more cautious and picky when considering only using stents. In addition, as less costly drug treatment...

AI Technical Summary

Problems solved by technology

In addition, when the imaging catheter is bent, it is easy to cause the rotation of the far and near ends to be out of sync, which will lead to the distortion of the image obtained by lumen OCT imaging.

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