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The PTMC Balloon (INOUE) is a specialized balloon catheter used for Percutaneous Transvenous Mitral Commissurotomy (PTMC), also known as percutaneous balloon mitral valvuloplasty. It is designed primarily for selected patients with mitral stenosis, particularly when the valve anatomy is suitable for catheter-based treatment.

The INOUE balloon system features a flexible catheter with an expandable balloon that is positioned across the narrowed mitral valve under appropriate imaging guidance. Once correctly positioned, the balloon is progressively inflated to separate fused portions of the mitral valve, enlarging the valve opening and improving blood flow from the left atrium to the left ventricle.

One of the important characteristics of the INOUE design is its ability to support controlled, stepwise balloon expansion, allowing the operator to adjust the effective balloon diameter according to the patient’s anatomy and procedural requirements. The catheter is designed to provide flexibility and controlled handling during transvenous positioning.

PTMC balloons are available in different sizes to accommodate varying patient anatomies. They are generally manufactured from medical-grade materials and supplied sterile for single-use applications.

The device is used in specialized cardiac catheterization laboratories by trained interventional cardiologists. Appropriate patient selection, imaging assessment, balloon sizing, positioning, and inflation are essential for safe and effective treatment. The device should always be used according to the manufacturer’s instructions and established clinical protocols.