CADWELL Sleepmate Disposable Thermistor Airflow Sensor Instructions
- June 12, 2024
- CADWELL
Table of Contents
Cadwell® Sleepmate
Instructions for Use (IFU)
Disposable Thermistor Airflow Sensor
Sleepmate Disposable Thermistor Airflow Sensor
Intended use
The Cadwell Sleepmate™ Disposable Airflow Sensor is intended to detect patient
nasal and/or oral breathing during sleep research and clinical studies of
sleep.
Instructions for use
Grasp the sensor at the exposed silver end, and insert one half of the
sensor’s silver end into the interface cable, then push on the neck of the
sensor and insert the remainder into the cable. Even after fully inserting the
connector, a portion of the silver connector may remain exposed. Then fold
the nasal extensions at an angle away from the face to insure that they are in
the flow of air. The side of the sensor with the SILVER sensor lines should be
facing toward the user’s skin. The one channel cable connector will point off
to the patient’s left.
Two Channel Output
The Two channel output allows you to see the Oral and Nasal signals
separately. To use this option requires a slight modification to the sensor
and the use of the two-channel cable.
Step 1: Place the sensor on a flat surface with the BLACK lines facing away
from the patient.
Note that both ends have two silver connector plates; however, on the left end
there
is a green colored half circle bridging the circuit.
Step 2: With scissors or knife cut the green half circle away from the LEFT
end of the sensor.
Now both ends of the sensor should look the same.
Step 3: Connect one cable to each end of the sensor.
Step 4: To obtain the Oral signal plug the red and black lead pair “Oral” into
one channel on the recorder.
Step 5: To obtain the Nasal signal refer the red and black lead pair labeled
“Nasal” into a second channel on the recorder. Ensure the sensor is securely
attached to the patient as described and you have clear, reliable signals
prior to lights out.
One Channel Output
The Adult and Medium sensors can be used as a Single channel output or a two-
channel output. The Single channel output is the default setup; the Oral and
Nasal airflow signals are combined on one channel. Simply plug a sensor into
the single channel cable and then insert the connectors into the recording
device. Ensure the sensor is securely attached to the patient as described and
you have clear, reliable signals prior to lights out.
Sensor Placement
Apply tape intended for facial use to the ends of the sensor and place the
sensor between the nose and mouth. Insure that the oral and nasal probes are
directly in the flow of air. The sensor works best when the sensor lies flat
against the skin between the nose and mouth.
Run the cable over the patient’s ear and apply a small piece of tape to the
neck to provide a strain relief for the lead wire. Ensure the sensor is
securely attached to the patient as described and you have clear, reliable
signals prior to lights out.
Cleaning
This sensor was designed for a single patient use. The lead wire can be
cleaned by rubbing with any cleansing agent that is not corrosive toward
plastic. The entire assembly must be completely dry before using again to
insure patient safety. For sterilization implement a standard procedure for
gas sterilization. Do not autoclave this product. Use the molded ends of the
connectors when removing the connector from the junction box.
Technical Specifications
| Description | Properties |
|---|---|
| Sensor Sizes | Adult: 10.25 cm (4″) length x 3.2 cm (1.3″) |
(nasal tip to oral tip) x 0.03 cm (0.01″) thick
Medium: 8.75 cm (3.4″) length x 2.75 cm (1.1″)
(nasal tip to oral tip) x 0.03 cm (0.01″) cm thick
Infant: 4.5 cm (1.8) length x 1.75 cm (0.7)
(nasal tip to oral tip) x 0.03 cm (0.01″) cm thick
Lead wire| Two-conductor white lead wire, approx. 200 cm (80″).
Connectors| 1.5 mm (0.1″) safety pins
Filter Settings| Low Hz = 0.1 Hz; High Hz =5 Hz;
Gain: Output range is +/-100 Microvolts
Caution Statement:
US Federal Law restricts this device to sale by or on the order of a
physician. This product is for diagnostic purposes only and is not intended to
be used as an apnea monitor or in a life supporting or sustaining capacity.
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>