Nicolet

Nicolet Elite Doppler User's Manual

8 Pages

Main unit recharge light does not come on (Elite 100R, 200R).  Main unit is on, but no audio signal is present (All Models).  a. Verify that the wall transformer is plugged in and that the wall outlet has power.  TABLE OF CONTENTS  b. Verify that the cable from the wall transformer is plugged into the unit.  Section Limitations Product Description Warning Safety of Ultrasound Contraindications Operation Care of the Instrument Product Compatibility Specifications Troubleshooting Nicolet Elite™ Problems Service Accessories Warranty  a. Headphones interrupt the internal speakers, remove the headphones. b. Probe is not plugged in.  Static (All Models).  a. Use an ample supply of ultrasonic coupling gel. Hold the probe steady once a signal has been detected. b. Some coupling agents, such as baby oil, maycause extra static. c. Reduce the volume level.  Weak or no fetal signal detected (All Models).  a. Fetus is too young. Wait a few weeks before trying the test again. b. Use plenty of coupling gel. c. Try turning up the volume.  Weak or no blood flow signal detected (All Models).  a. Use plenty of coupling gel. b. Try turning up the volume. c. If using 8MHz vascular probe, adjust angle of probe to optimize signal.  No fetal heart rate displayed with audible tones a. Fetal heart rate is outside of display range. (Elite 200, 200R). See Specifications Section. b. The detected signal is blood flow or placental flow. The characteristics of placental flow sounds produce a smooth Doppler envelope. A very smooth envelope will not correlate well, so no rate is displayed. Reposition the probe. No vascular heart rate is displayed with audible tones (Elite 200, 200R).  a. Heart rate range is outside of display range. See Specifications Section.  Unit shuts off during use. (Elite 200, 200R)  a. The unit shuts off after approximately 3 minutes if not in use. Large signals are used to reset the power-off-timer. Faint signals may not reset the timer.  (All Models)  b. Battery is low. Replace or recharge.  Inaccurate vascular heart rate (Elite 200, 200R).  a. Certain flow waveforms contain large display display harmonics which can cause heart rate doubling.  Unstable fetal heart rate display (Elite 200, 200R).  a. Fetus is too young. Wait a few weeks before trying the test trying the test again, or try a manual method for determining heart rate. b. Fetus is moving. Wait a few minutes to see if the fetus settles down. c. Excessive static. Some probe movement patterns may cause erroneous heart rate displays. Refer to the above section on static for recommendations. d. Probe is detecting blood flow sounds. Reposition the probe.  12  Page Number 1 2 2 4 4 4 8 9 9 11 13 13 14  The purpose of this manual is to guide the user in the operation and care of the Elite. Every reasonable effort has been made to present accurate information. Nicolet Vascular hereby disclaims and makes no warranty with respect to any diagnosis, clinical condition or interpretation made based on the information presented herein. Refer to the Limited Warranty at the end of this manual for the equipment warranty.  Caution: The 5 MHz and 8MHz vascular probes are not intended for fetal use. Warning: This product is not intended for use on or around the eyes. This product is not intended for use on non-intact skin.  LIMITATIONS The theory of Doppler ultrasound is beyond the scope of this manual, but is covered in many recent publications. The Elite is designed to be reliable, but as with all medical instruments, should be treated with care. While the Elite augments the user’s skills, it is not a substitute for medical training and knowledge. NOTE: The Elite provides the listener with information about the fetus and vascular conditions. Under poor signal conditions, the fetal heart sounds and readings may not be accurate. (Refer to the Troubleshooting section at the end of this manual for a description of sensitivity problems and solutions.) If there is any doubt about the fetal condition after using the Doppler, further investigation should be initiated immediately.  1
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