Intravascular endoscopic ultrasound-OCT probe system

Abstract

The invention discloses an intravascular endoscopic ultrasound-OCT probe system, which is applied to imaging in an artery blood vessel. The probe system comprises an imaging probe which is constitutedby a slender hollow catheter, wherein a driving component, an imaging catheter and an interface module are sequentially arranged on a far-end part, a middle part and a near-end part of the interior of the slender hollow catheter, and the interface module is connected to an image processing and display system; the image processing and display system comprises an OCT tomography module, an ultrasonic tomographic image imaging module, a synchronous control unit, an image processing module, an image display module and a user interface; the driving component comprises an ultrasonic motor and an acousto-optical reflector; the ultrasonic motor is composed of an ultrasonic motor stator and an ultrasonic motor rotor; the imaging catheter comprises an OCT probe catheter part and an ultrasonic imaging catheter part; and the OCT probe catheter part is composed of a single mode fiber and a grin lens. According to the probe system provided by the invention, a near-end driving device is arranged at an ultrasound inner side and is free from electromagnetic interference; and meanwhile, the swinging amplitude of an imaging part that the far end is inserted into a blood vessel can be easily controlled, so that higher safety is guaranteed.

Description

technical field [0001] The invention relates to the field of medical endoscopy, in particular to a vascular endoscope ultrasound-OCT probe system. Background technique [0002] The major cause of most acute coronary heart disease and intravascular thrombosis is the rupture of vulnerable plaques (thin fibrous cap lipid plaques, TCFAs) attached to the vessel wall. Long-term studies on patients with coronary heart disease have shown that TCFA has the characteristics of thin fibrous cap, large lipid core, rich in macrophages, glycoprotein matrix, inflammatory response, and calcified nodular plaques, while the thickness of fibrous cap of TCFA is closely related to lipid. The size of the mass is the main parameter to characterize its hazard. [0003] At present, the main method for detecting coronary heart disease is coronary angiography, but this technology can only image the intravascular blood flow. The current imaging methods for morphological examination of vulnerable plaqu...

AI Technical Summary

Problems solved by technology

However, due to the limited penetration depth of intravascular OCT (field of view radius 3-4mm, penetration depth 1-2mm), its ability to identify calcified and lipid plaques is not strong

(The full picture of vulnerable plaques with large lipid cores cannot be fully described

[0004] Patent Application No. 201410333307.3 The imaging probe with a combined ultrasonic and optical imaging device introduces an ultrasonic-OCT imaging probe driven by an external proximal drive device. The external drive has certain electromagnetic interference, and it is not easy to control the insertion of the distal end into the blood vessel. The swing amplitude of the inner imaging part is less secure

[0005] Patent authorization announcement number CN1322839C invented a medical endoscope micro-ultrasound-OCT probe, the ultrasonic transducer and the OCT imaging device are located at both ends of the ultrasonic motor, and the images formed are not on the same cross-section. In addition, the invention The image processing and display part connected to the imaging probe is not described

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