SAN DIEGO--(BUSINESS WIRE)-- Cook Medical has added a 25 gage needle to its EchoTip® ProCore™ line of fine needle biopsy (FNB) histology needles, which are designed for use in a procedure known as endoscopic ultrasound, or EUS. The EchoTip ProCore is a single-use, disposable needle for FNB intended for sampling of submucosal lesions, mediastinal masses, lymph nodes and intraperitoneal masses.