GE Corometrics 250 Series Service Manual Download

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A-10

250 Series Maternal/Fetal Monitor

Revision D

2020551-001

Technical Specifications

Operating Modes

Maternal Pulse Oximetry Mode (Nellcor)

Technique:
Sensor Type and Accuracy

OxiMax

Sensor Models

MAX-A

DS-100A

Saturation Range:
Pulse Rate Range:
Accuracy:

Saturation (SpO

Adults

Low Perfusion

Pulse Rate (bpm)

Adults

Wavelengths

Red
Infrared

Maximum Optical Output Power:
Response Time:
Alarms (audible and visual):

Audio
Visual
Limits

Technical

Spectrophotometry and plethysmography.
SpO

Range:

70%–100%:
± 2 digits
± 3 digits

1–100%
30–250 bpm

70%-100% ± 2 digits
70%-100% ± 2 digits
0%-69% unspecified

20 to 250 bpm ± 3 digits

660 nm, nominal
890 nm, nominal
< 15 mW
Fast
Alternating 1.5-second chimes
Flashing SpO

numeric or message

User-selectable high and low SpO

; User-selectable high and

low pulse rate
Sensor errors, connection errors, insufficient signal, communication
problem, internal calibration error, or self-test failure.

Accuracy specifications are based on controlled hypoxia studies with healthy, non-smoking adult volunteers over the specified saturation SpO

range. Pulse oximeter

SpO

readings were compared to SaO

values of drawn blood samples measured by hemoximetry. All accuracies are expressed as ± “X” digits. This variation equals ±

one standard deviation (± 1 SD), which encompasses 68%of the population.Oxygen saturation accuracy can be affected by certain environmental and patient physiological
conditions, as discussed in the operator’s manual for the monitor. Use Nellcor sensors only with 250 Series Monitors containing Nellcor oximetry. Consult individual
manufacturers for accuracy specifications and compatibility information of particular instruments and Nellcor sensor models. The volunteer population was composed of
healthy men and women recruited from the local population. The ages ranged from 18 to 50 years old, with variations of skin pigmentations.

Adult specifications are shown for OxiMax

MAX-A and MAX-N sensors with the N-600. Saturation accuracy will vary by sensor type.

Applicability: OxiMax

MAX-A, MAX-AL, MAX-P, MAX-I, and MAX-N sensors.

Information of wavelength range can be especially useful to clinicians performing photodynamic therapy.

NOTE:

Because pulse oximeter equipment measurements are statistically distributed, only about two-thirds of pulse oximeter equipment measurements can be

expected to fall within ±

rms

of the value measured by a CO-Oximeter.

NOTE:

Use of a functional SpO

simulator to assess the accuracy of the Corometrics 250 SpO

parameter has not been demonstrated.

This device is covered under one or more of the following Patents: US Patent No. 4,802,486; 4,869,254; 4,928,692; 4,934,372; 4,960,126; 5,078,136; 5,485,847; 5,743,263;
5,865,736; 6,035,223; 6,298,252; 6,463,310; 6,591,123; 6,675,031; 6,708,049; 6,801,797; Re. 35,122; and foreign equivalents.

Maternal Vital Signs History

Storage/Recall:

8 hours, maximum

Table 2. Operating Mode Specifications (Continued)