Learn More About Vass M1

Minimally invasive, highly precise

Accessed through a 6 cm incision at the cardiac apex, the Vass M1 enables septal myectomy on a beating heart—without the need for sternotomy or cardiopulmonary bypass. This approach significantly reduces surgical trauma and accelerates recovery.

Optimized for ultrasound visibility

The instrument’s surface is coated with a proprietary material that minimizes ultrasound interference, ensuring a clear and reliable image under transesophageal echocardiography (TEE)—with no need for contrast agents. This enhances both safety and procedural efficiency.

Real time TEE guidance

Continuous real-time TEE imaging allows surgeons to precisely locate the target region and receive visual feedback throughout the procedure, improving the accuracy and safety of tissue resection.

Anatomically tailored design

The shape and curvature of the device’s front opening are carefully engineered to conform to the anatomy of the interventricular septum, ensuring close contact with the myocardial surface and consistent performance across varying patient anatomies.

Secure targeting mechanism

An integrated puncture needle locks the target area before resection, stabilizing the cutting direction and minimizing the risk of intraoperative deviation.

Built-in negative pressure protection

A continuous negative pressure system during resection helps prevent tissue fragments or air from entering the bloodstream—reducing the risk of embolism at its source.

Controlled rotary cutting mechanism

A rotating handle drives the blade forward, enabling smooth, continuous tissue removal with clear tactile feedback—allowing precise control over resection depth.

Complete tissue retrieval

Excised myocardial tissue is retained securely within the device in its closed position, allowing for complete extraction. This facilitates postoperative pathological analysis and evaluation of treatment outcomes.

Repeatable access for extended resection

The system allows for multiple entries during a single procedure, enabling resection of additional areas or broader segments as needed to fully relieve left ventricular outflow tract obstruction.

Proven in clinical practice

Vass M1 has been successfully used in more than 1,000 clinical procedures. Its robust performance and demonstrated efficacy have earned the trust of leading cardiac surgeons.