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HD11 XE Getting Started
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TEE Transducers
Selecting Patients for the S7-3t Transducer
Although the S7-3t TEE transducer can provide clinical data not available from
other instruments, you should consider which patients can safely use the trans-
ducer.
Philips recommends that you use the S7-3t TEE transducers only on patients
weighing at least 3.5 kg (7.7 lb).
CAUTION
The ability of a patient to swallow or accommodate the transducer should be
considered.
You must consider any history of gastroesophageal diseases as well as the possible
effects of other therapies that the patient is undergoing. You must also consider
all gastroesophageal abnormalities or difficulty swallowing.
Deflection and Scan Plane Rotation Control
The control handle is designed for one-hand operation. Normally, you should
operate the control handle with your left hand. The thumb, first, and second fin-
gers control the deflection and the scan plane rotation control wheels.
The smaller wheel on the handle is for controlling the transducer tip deflection.
This wheel has a locked mode and a freewheeling mode. In the locked mode, the
movement of the deflection wheel is restrained to allow you to hold the tip in a
certain position. A metallic ring around the body of the handle, which clicks on
and off, controls the lock.
The larger wheel on top is the scan plane rotation control wheel.
Tip Deflection Control
The deflection control wheel on the handle of the transducer controls deflection
of the S7-3t TEE transducer tip.
WARNING
Check if the maximum deflection of the tip is 120 degrees upward and 90 degrees
downward. If the up/down deflection shows an unwanted amount of free play or
exceeds the maximal deflection angles, do not use the transducer. Contact Philips
to readjust the steering of the transducer. In this way, the risk of buckling or caus-
ing the U-turn of the transducer in the esophagus is minimized.
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