A system for controlling multiple guidewires comprises a guiderail, which has a housing that defines a first guidewire lumen and a second guidewire lumen. The guidewire lumens extend through the entire length of the guiderail. The guiderail housing further defines a first longitudinal opening that extends from the first guidewire lumen to the exterior of the guiderail, and a second longitudinal opening that extends from the second guidewire lumen to the exterior of the guiderail.
