A guidewire for medical procedures can be stored in a coiled configuration with a clamp. The clamp comprises a guidewire introducer funnel, which can be removably coupled to a hub of a catheter. The clamp comprises an adaptor to allow it to be removably coupled to a guidewire storage tube. The clamp comprises an interior channel configured to allow a guidewire to be advanced therethrough, and the interior channel can be coupled to the introducer and an adaptor that can be coupled to the back end of the clamp.