Peripheral laser angioplasty with sapphire tip.

Area of Science:

• Cardiovascular Interventions
• Medical Engineering
• Laser Medicine

Background:

• Peripheral artery disease (PAD) significantly impacts patient mobility and quality of life.
• Traditional laser recanalization techniques can lead to complications like vessel perforation.
• Advancements in laser technology are crucial for improving endovascular treatment efficacy.

Purpose of the Study:

• To evaluate the efficacy and safety of sapphire laser angioplasty for peripheral artery stenosis and occlusion.
• To assess the impact of occlusion length on recanalization success rates.
• To compare outcomes with conventional laser angioplasty methods.

Main Methods:

• A Nd:YAG laser system with a sapphire-tipped fiber optic probe (1.8-3 mm diameter) was utilized.
• The technique was applied to 127 patients with severe iliac, femoral, or popliteal artery stenosis/occlusion.
• Recanalization was often augmented with subsequent balloon angioplasty.

Main Results:

• Successful recanalization was achieved in 80% (102 out of 127) of treated arteries.
• Recanalization success rates decreased with increasing occlusion length, from 93% for 3 cm to 33% for 15 cm or more.
• The primary causes of failure were vessel perforation or probe entry into the vessel wall.

Conclusions:

• Sapphire laser angioplasty is an effective method for achieving total recanalization of occluded peripheral arteries.
• The technique demonstrates a low rate of failure and complications, enhancing treatment safety.
• Further research may optimize probe design and laser parameters to mitigate failures related to occlusion length.