A laser ablation catheter with shock wave balloon attached

Abstract

The invention discloses a laser ablation catheter with an additional shock wave balloon belonging to the field of diagnosis; wherein the optical waveguide is installed in the catheter, and the catheter is composed of three parts: a thick distal end, a narrowed section and a thin proximal end. The distal end face of the guide wire lumen is the optical waveguide and the outlet end face of the guide wire lumen; the proximal outlet of the guide wire lumen is set on the thin proximal end, and the distal end face of the guide wire lumen is set at the center of the distal end face of the thick distal end, The far end of the optical waveguide is arranged on the far end face, and the near end of the optical waveguide is connected with the pulse laser. A thin wire is arranged in the end surface of the distal end, and the thin wire is inserted into the gap of the optical waveguide distributed in the thick distal end. The invention solves the problem of inconsistent consistency between catheters when combined with other percutaneous coronary interventions, which is caused by the requirements for the cross-sectional area size and cross-sectional area change value of the catheter used in laser ablation.

Description

technical field [0001] The invention belongs to the technical field of diagnosis, in particular to a laser ablation catheter with a shock wave balloon attached. Background technique [0002] Percutaneous Coronary Intervention (PCI) is a minimally invasive procedure to dredge the narrowed or even occluded coronary artery lumen through catheter technology, thereby improving the blood perfusion of the myocardium. Traditional treatments include balloon angioplasty or stent implantation. However, coronary artery calcification increases the difficulty of interventional therapy, increases the immediate complications of surgery and the incidence of early and late major adverse cardiovascular events. The reason is that calcified lesions are high-resistance lesions, and the balloon requires very high pressure (sometimes the pressure can reach 10 to 15 standard atmospheres, or even 30 standard atmospheres). Such pressure usually significantly increases the probability of rebound sten...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that laser ablation and other percutaneous coronary interventions are difficult to achieve the same cross section of the catheter, we proposed a laser ablation catheter with a shock wave balloon, and also solved the cross-sectional area of ​​the catheter after the combination of the two treatment techniques Consistency issues; the operator can first use laser ablation to pass through the narrow or even blocked lesion area, and then place the electrodes of shock wave angioplasty on the lesion area to further soften the calcified lesion for further treatment, so that it can be as much as possible Pretreatment of calcified lesions with high resistance

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