Flow Rate Accuracy; Measurement Error; Fluid Volume - Medtronic SYNCHROMED II Manuel D'implantation

Filename Date Time
UC200xxxxxx EN
4.6 x 6.0 inches (140 mm x 197 mm)

Flow rate accuracy

The flow rate accuracy of the pump is within ±14.5% of the programmed flow rate at 0.048-24
mL/day, 37 °C, 50% reservoir volume, and 300 meters above sea level. Measurement error,
fluid volume, and changes in environmental conditions (eg, body temperature and
atmospheric pressure) all affect the flow rate. The effects of these changes on flow rate are
cumulative if the conditions exist simultaneously.

Measurement error

The apparent flow rate based on clinical measurements can vary due to measurement error
(eg, syringe measurement accuracy, human error, and the volume of fluid in the extension
tubing and filter).

Fluid volume

The flow rate of the pump varies slightly with the volume of fluid in the pump reservoir. The
pump flow rate decreases as the reservoir volume approaches 1 mL. The pump flow rate
decreases rapidly and then stops as the reservoir volume decreases from 1 mL to 0 mL.
Therefore, the pump should be refilled prior to reaching 1 mL or less. Typically, the flow rate
decreases by about 4% as the volume is reduced from the half-full volume to a volume of 1
mL. The usable volume is the reservoir volume minus 1 mL (Figure 5).
M221311A028 Rev A
Time Since Implant
Figure 4. ERI and EOS.
Medtronic Confidential
ImplantManual.xsl - IPGTemplate.fm
Template version: 03-03-2010
ERI
EOS
90 Days
8637 2009-10 English 11
2009-10