Cardiac sizing catheter

Cardiac sizing catheters are flexible, single-use tubes with an inflatable balloon at the tip, used to measure the size of cardiovascular defects like septal holes or vascular anomalies. Clinicians insert them over a guidewire into the heart or blood vessels, inflate the balloon to assess defect dimensions, and use radiopaque markers for precise fluoroscopic guidance before selecting an occlusion device.

These devices are typically sterile, disposable, and regulated as medical devices rather than drugs. They’re supplied pre-sterilized and packaged for immediate clinical use, with variations in length, balloon size, and marker design to accommodate different anatomical needs.