Mindray Passport 5-Lead, Service Manual

Page: 53 / 544

Passport 5-Lead, 5L, LT, XG Service Manual 0070-00-0420 1 - 41
Operation (5-Lead, 5L, LT and XG) Operation (5-Lead, 5L, LT)
If poor perfusion affects instrument performance, and the patient weighs more than 50 kg
(110 lbs.), consider using the OXISENSOR™ R-15 adult nasal oxygen transducer. Because
the R-15 obtains its measurements from the nasal septal anterior ethmoid artery, an artery
supplied by the internal carotid, this sensor may obtain measurements when peripheral
perfusion is relatively poor. For low peripheral perfusion, consider using the Nellcor® RS-10
reflectance oxygen transducer, which is applied to the forehead or temple.
If patient movement presents a problem:
• Verify that the sensor is properly and securely applied.
• Use a new sensor with fresh adhesive backing.
• Move the sensor to a less active site.
• Use a type of sensor that tolerates some patient motion, such as the OXISENSOR™ D-25,
D-20, N-25, or I20 oxygen transducer.
1 In an unopened, undamaged package.
All Nellcor® accessories and sensors must be purchased form Nellcor® Inc., 25495
Whitehall Street, Hayward, Ca. 94545. To contact Nellcor®, call 1-800-NELLCOR.
1.3.9.2 Special Features
Automatic Calibration
The oximetry subsystem incorporates automatic calibration mechanisms. It is automatically
calibrated each time it is turned on, at periodic intervals thereafter, and whenever a new
sensor is connected. Also, the intensity of the sensor’s LEDs is adjusted automatically to
compensate for differences in tissue thickness.
Each sensor is calibrated when manufactured; the effective mean wavelength of the red LED
is determined and encoded into a calibration resistor in the sensor plug. The instrument’s
software reads this calibration resistor to determine the appropriate calibration coefficients
for the measurements obtained by that sensor.
TABLE 1-8 Nellcor® Sensor Family
SELECTION
GUIDE
D25/D25L
ADULT
R-15
ADULT
N-25
NEONATAL
I-20
INFANT
D-20
PEDIATRIC
RS-10
ADULT
Patient Size >30 kg >50 kg <3 kg >40 kg 1-20 kg 10-50 kg >40 kg
Duration of Use Short or
Long Term
Short or
Long Term
Short or Long
Term
Short or Long
Term
Short or Long
Term
Short Term
Sterility Sterile
1
Sterile
1
Sterile
1
Sterile
1
Sterile
1
Non-sterile
Patient Activity Limited
Activity
Inactive Limited Activity Limited Activity Limited
Activity
Limited
Activity
OXISENSOR
adult digit
oxygen
transducer
OXISENSOR
adult nasal
oxygen
transducer
OXISENSOR
neonatal
oxygen
transducer
OXISENSOR
infant digit
oxygen
transducer
OXISENSOR
pediatric digit
oxygen
transducer
RS-10
reflectance
oxygen
transducer