Laser ablation catheter with additional shock wave balloon

Abstract

The invention discloses a laser ablation catheter with an additional shock wave balloon, and belongs to the field of diagnosis. An optical waveguide is installed in the catheter, the catheter is formed by integrally and fixedly connecting a thick far end, a narrowing section and a thin near end, and the end face of the far end of the catheter is an outlet end face of the optical waveguide and a guide wire tube cavity. A near-end outlet of the guide wire tube cavity is formed in the thin near end, a far-end outlet of the guide wire tube cavity is formed in the center of the far-end end face of the thick far end, the far end of the optical waveguide is arranged on the far-end end face, and the near end of the optical waveguide is connected with a pulse laser. Filaments are arranged in the far-end end face, and are inserted into gaps of the optical waveguide distributed in the thick far end. The problem of consistency contradiction between catheters in combination with other percutaneous coronary interventional therapy caused by requirements on the cross section area size and the cross section area change value of the catheters used in laser ablation is solved.

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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