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Related Experiment Videos

Trefoil balloon for percutaneous valvuloplasty.

B Meier, B Friedli, I Oberhaensli

Catheterization and Cardiovascular Diagnosis

|January 1, 1986

Summary

A novel Trefoil balloon allows continuous blood flow during percutaneous balloon valvuloplasty, unlike conventional balloons. This innovation shows promise for improved procedural safety and efficacy in treating valvular stenosis.

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Area of Science:

Cardiovascular Interventions
Medical Device Development
Interventional Cardiology

Background:

Percutaneous balloon valvuloplasty is a key treatment for valvular stenosis.
Complete interruption of blood flow during balloon inflation can pose risks.
Existing balloon designs may cause significant hemodynamic compromise.

Observation:

A new Trefoil balloon, featuring three parallel-mounted balloons, was developed.
This design allows for a rosette-like cross-section when inflated, maintaining blood flow.
In canine models, the Trefoil balloon created gradients without complete obstruction, unlike conventional balloons.

Findings:

The Trefoil balloon successfully facilitated continuous transvalvular blood flow during dilatation.

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In patients with congenital pulmonary stenosis, its use was safe and effective.

Hemodynamic assessments showed manageable gradients (5-40 mmHg) during procedures.

Implications:

The Trefoil balloon represents a significant advancement in valvuloplasty devices.
It may reduce risks associated with temporary blood flow interruption.
Potential applications extend to coronary angioplasty and other interventional procedures.