A regional anesthesia system and a cart for aiding in the placement of a regional anesthesia block without the need of ancillary assistance. The invention includes equipment for use in the performance of a regional anesthesia block which is carried on a cart for transporting and providing a stable foundation for the equipment. The equipment includes a nerve localization means such as ultrasound or a peripheral nerve stimulator for locating a target nerve of a patient, a position assist arm for maintaining the position of the localization means over the target nerve while the operator inserts an anesthetic needle over the target nerve, and an anesthetic infusion device for infusing or aspirating through the anesthesia needle. The infusion device includes an infusion pump controlled by a foot pedal. The system may be easily transported to a patient requiring a regional anesthesia block, and allows the regional anesthesia block to be performed with minimal ancillary assistance.