Technical implementation of percutaneous thrombus aspiration using the AngioVac system

Area of Science:

• Cardiovascular Interventions
• Medical Device Technology
• Vascular Surgery

Background:

• Central venous thrombi, lead vegetations, and right atrial thrombi pose significant clinical challenges.
• Minimally invasive techniques are increasingly preferred for managing complex venous obstructions.
• Existing aspiration systems may have limitations in efficacy and safety.

Purpose of the Study:

• To evaluate the initial clinical experience with the AngioVac system for percutaneous aspiration.
• To describe the development and implementation of an improved extracorporeal circuit for the AngioVac system.
• To assess the safety and efficacy of the AngioVac system in removing venous thrombi and vegetations.

Main Methods:

• Retrospective observational study of 52 adult patients undergoing percutaneous aspiration with the AngioVac system.
• Focus on modifications to the extracorporeal circuit to enhance usability and safety.
• Analysis of procedural success rates and complications.

Main Results:

• Successful aspiration in 84.6% of cases (44/52 patients).
• Indications included lead vegetations (69.2%), right atrial thrombi (17.3%), and central venous thrombi (9.6%).
• Improvements included a shunt line for recirculation and enhanced air handling safety features.

Conclusions:

• The AngioVac system demonstrated safety in its initial application for extracorporeal circulation.
• The system effectively eliminated thrombi and lead vegetations in the majority of cases.
• Further validation on a larger scale is warranted for pressure monitoring.