Initial Experience of Multipurpose Mechanical Aspiration System for Acute High-Risk Pulmonary Embolism: A Prospective

GuangMing Tan1,2, Timothy Ho Him Kam1, Edbert Cheuk Yin Lai1

  • 1Department of Medicine and Therapeutic The Chinese University of Hong Kong Hong Kong China.

Pulmonary Circulation
|November 27, 2025
PubMed

Insights

A novel multipurpose mechanical aspiration system (MMAS) shows promising results for treating high-risk acute pulmonary embolism (PE). This study found MMAS to be safe and effective, with zero in-hospital mortality in treated patients.

Area of Science:

  • Cardiology
  • Interventional Pulmonology
  • Medical Devices

Background:

  • High-risk acute pulmonary embolism (PE) carries a substantial in-hospital mortality risk.
  • Existing data on Large-Bore Mechanical Thrombectomy (LBMT) for high-risk PE is limited.
  • Mechanical thrombectomy offers a potential treatment avenue for acute PE.

Purpose of the Study:

  • To evaluate the safety and efficacy of a novel multipurpose mechanical aspiration system (MMAS) for treating high-risk acute PE.
  • To assess procedural outcomes and clinical improvements in patients with hemodynamically unstable PE.

Main Methods:

  • A prospective case series involving 14 patients with high-risk acute PE.
  • Treatment utilized a novel multipurpose mechanical aspiration system (MMAS).
  • Hemodynamic parameters and procedural success rates were monitored.

Main Results:

  • Complete procedural success was achieved in 78.6% of cases.
  • Mean pulmonary arterial pressure decreased by 27.2%, and RV/LV ratio normalized in 85.7%.
  • Zero in-hospital mortality was observed, with a major bleeding rate of 27.2%.

Conclusions:

  • The multipurpose mechanical aspiration system (MMAS) appears to be a safe and effective intervention for acute high-risk PE.
  • MMAS demonstrates significant hemodynamic improvements and a favorable mortality outcome.
  • Further research is warranted to confirm these findings in larger cohorts.

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