[Percutaneous sonographic angioplasty. Initial experimental results].

Area of Science:

• Vascular Surgery
• Medical Device Technology
• Cardiovascular Research

Background:

• Atherosclerosis poses a significant risk for cardiovascular events.
• Novel minimally invasive treatments are needed to manage atherosclerotic plaques.
• Ultrasound technology offers potential for plaque modification.

Purpose of the Study:

• To assess the in vitro efficacy and safety of a new ultrasound catheter system.
• To evaluate the system's impact on both normal and atherosclerotic vascular tissue.
• To determine optimal parameters for ultrasound catheter treatment.

Main Methods:

• Autopsy-derived vascular preparations (n=32) were utilized for in vitro testing.
• Vessels were prepared and subjected to ultrasound treatment under controlled conditions.
• Macroscopic and histological analyses were performed to assess morphological changes.

Main Results:

• No significant morphological damage was observed in normal vessels, only minor pressure artifacts.
• The ultrasound catheter system demonstrated no vessel perforations.
• A significant reduction in the size of atherosclerotic plaques was achieved.

Conclusions:

• The novel ultrasound catheter system is safe for use on normal vasculature.
• The system effectively reduces the size of atherosclerotic plaques in vitro.
• Further in vivo studies are warranted to confirm clinical applicability.