What direction does a rotational atherectomy device move during operation?

A rotational atherectomy device operates by using a unique mechanism of action that involves circular motion to effectively ablate or remove atherosclerotic plaque from within a blood vessel. The device rotates at high speeds, which allows it to target and break down hard calcified plaques by grinding away the material.

The reason circular movement, which involves a 90-degree rotation relative to the vessel, is essential is that it allows for thorough engagement with the plaque, ensuring that the device can effectively advance while maintaining contact with the lesion. This motion helps to maximize the surface area that is treated during the procedure and enables the removal of material in a controlled manner.

In contrast, linear movement would not provide the necessary interaction with the plaque, as it lacks the ability to effectively ablate tissue. Angular or vertical motions would also not accomplish the same results since they do not provide the optimal method for addressing the specific geometry of the plaque and the vessel. The circular motion in this context is crucial for achieving the intended therapeutic outcome in rotational atherectomy procedures.