EG-3870UTK, Pentax Ultrasound Video Gastroscope. || The EG-3870UTK, Ultrasound Video Gastroscope, is intended to provide optical visualization via a video monitor of, ultrasonic visualization of, and therapeutic access to the Upper Gastrointestinal Tract, including, but restricted to the organs, tissues, and sub-systems; Esophagus, Stomach, Duodenum, Small Bowel, and underlying areas. The instrument is introduced per orally when indications consistent with the need for procedure are observed in adult and pediatric patient populations.