Under Pressure: The Hidden Challenges in Medical Balloon Manufacturing

Behind every medical balloon is a manufacturing process that is far more complex than most people realize.  

In this episode of MedTech Unboxed, Steve talks with Nate Fatkhiyev, Director of Balloon Technology at LightningCath, about why medical balloons are much harder to make than they look.  

Building off Nate’s recent presentation at MPP East, their conversation walks through the full balloon manufacturing journey, from extrusion to blow molding to final testing.  

Nate shares why material consistency, tube geometry, and process control matter so much in real-world balloon performance. He also breaks down why dimensions like ID, wall thickness, and centricity are so critical, how defects like draw lines, gels, and fish-eyes can show up in finished balloons, and why burst, compliance, and fatigue testing are essential for ensuring safety and consistency.  

You’ll get a practical look at one of the most overlooked parts of catheter development.  

What you’ll hear in this episode:

• Why balloon manufacturing is so complex, even before forming begins
• Why extrusion is a critical foundation for balloon performance, including the role of ID, wall thickness, centricity, and tube mechanics
• How blow molding works across heat, pressure, and stretch, and why small process changes can affect final balloon behavior
• What fish-eye defects may actually look like under SEM, and why small tube defects can become major balloon risks
• Why burst, compliance, and fatigue testing are so important for validating balloon performance and patient safety
• How LightningCath is thinking about rapid prototyping, balloon components, and faster customer iteration