Philips S7-2 OMNI 21778A Transesophageal TEE Ultrasound Transducer Fully Tested

• Model: 21778A
• Applications: Transesophageal
• Field of View: ~90°, mechanically/rotatable array from 0° to 180°
• Patient Size: Recommended for adult TEE—specifically patients weighing > 25 kg (≈ 55 lb)
• Frequency Range: 2.0 - 7.0 MHz
• Compatibility: Philips HD11; Philips HD11XE; Philips iU22; Philips iE33
• Tip Dimensions: Tip: about 1.5 cm (width) × 3.5 cm (length)
• Shaft Diameter: ~1.0 cm
• Shaft Length: 39.4 in.

The Philips S7‑2 OMNI TEE transducer is a robust adult transesophageal ultrasound probe designed for comprehensive cardiac imaging. With its frequency agility from 2–7 MHz and phased array design, this probe allows cardiologists to obtain high‑resolution images from within the esophagus, enabling clearer views of cardiac structures without interference from ribs or lungs. The mechanical rotation of the array from 0° to 180° combined with electrocautery suppression enables versatile positioning and safe operation in situations where electrical interference may otherwise degrade image quality.

In terms of form factor, the probe features a tip that is approximately 1.5×3.5 cm (width × length), a shaft diameter of about 1.0 cm, and a shaft length near 1.0 meter. These physical dimensions are standard among adult TEE probes, designed to provide sufficient reach and flexibility while maintaining maneuverability and patient comfort (for patients above ~25 kg). The durable construction, along with features like tissue Doppler, color Doppler, high PRF, harmonic imaging, XRES, and LVO, make it suitable for a broad range of cardiac echo applications, including diagnosing valvular disease, assessing ventricular function, intraoperative monitoring, etc.

When vendors say “fully tested,” they typically mean that the probe has been subjected to acoustic output checks, image performance, element integrity, leak / waterproofing tests, mechanical bending/deflection tests, and electrical safety checks. With the Philips S7‑2 OMNI, “fully tested” refurbished units are often sold with at least a 6‑month warranty (depending on vendor and condition).

This medical equipment item is being sold in its current condition, with only a basic assessment performed. It powers up and successfully completes its self-check or boot process, indicating that it is operational to that extent. However, no further testing beyond this initial check has been conducted.