An introducer is provided which directs a probe, such as TE ultrasound probe, into the esophagus. The introducer of the present invention consists of a pilot member (301) and a coaxially fitting sheath (400). The pilot member (301) may be an endoscope-like element and the sheath (400) is an elongate flexible member. The outside diameter of the pilot member insertion tube is roughly the same as that of the TE probe while the outside diameter of the sheath is sized for passage into the esophagus. When assembled coaxially, the pilot member and sheath fit slidingly together.
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