Catheter system integrating ultrasonic imaging and laser ablation

Abstract

The invention provides a catheter system integrating ultrasonic imaging and laser ablation. The catheter system comprises a catheter, the left end and the right end of the catheter are the catheter near end and the catheter far end respectively, an optical waveguide and an ultrasonic signal channel are arranged in an inner cavity of the catheter, the near end of the optical waveguide is connected with a pulse laser light source, and the far end of the optical waveguide ends at the end face of the catheter far end. Laser pulses emitted by the pulse laser light source are emitted from the front of the far end of the catheter through the optical waveguide and erode tissues in front of the catheter; The near end of the ultrasonic signal channel is connected with an ultrasonic imaging engine, the far end of the ultrasonic signal channel is connected with an ultrasonic imaging probe for foresight imaging, and the ultrasonic imaging probe is used for focusing and scanning imaging to assist laser ablation. Vascular ultrasonic imaging and laser ablation are combined into a catheter system, the treatment effect of the laser ablation is reserved, image guidance of the vascular ultrasonic imaging is provided, and application of the laser ablation in eccentric vascular stenosis can be improved.

Description

technical field

[0001] The invention belongs to the technical field of intravascular imaging and vascular stenosis treatment, and in particular relates to a catheter system integrating ultrasonic imaging and laser ablation. Background technique

[0002] Percutaneous coronary intervention (PCI) usually sends the guiding catheter to the coronary artery opening to be dilated, and then sends a balloon of the corresponding size along the guide wire to the stenotic segment, with appropriate pressure and time according to the characteristics of the lesion. Dilation, to achieve the purpose of relieving arterial stenosis, traditional treatment methods include angioplasty and stent implantation. Plaque ablation is an adjuvant cardiac interventional treatment technique, including coronary atherectomy, orbital atherectomy, and laser ablation. In recent years, Excimer Laser (Excimer Laser) intracoronary plaque ablation uses ultraviolet light source, catheter design, and pulsed emission ...

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