Which device is primarily used to secure pressure at the arteriotomy site?

The Femostop device is specifically designed for securing pressure at the arteriotomy site following a vascular procedure, particularly in the femoral artery. It functions by creating localized pressure to stem bleeding and promote hemostasis effectively after sheath removal. The device allows for adjustable pressure that can be tailored to the individual patient's needs, ensuring adequate compression without excessive pressure that could compromise circulation.

This device is advantageous in interventional radiology procedures where careful management of access sites is critical to prevent complications such as hematomas or site bleeding. Its design permits the clinician to monitor and adjust the pressure as required, which is essential for patient safety.

In contrast, other options, such as the C-Clamp and compression pad, while they might assist in applying pressure, are not specialized for the precise control and monitoring of hemostasis at the arteriotomy site and may not be as effective or user-friendly in a clinical context. The radial band is a device geared towards accessing the radial artery for procedures and is not generally used for femoral access site management. Therefore, the Femostop is identified as the primary device for this specific function in procedural settings involving arterial punctures.