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Alice Portable sleep diagnostic system

Alice PDx

Portable sleep diagnostic system

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The Alice PDx portable diagnostic recording device is intended for Obstructive Sleep Apnea screening, follow-up and diagnostics in polysomnography and sleep disorder studies. Patients can be tested in the hospital or at home.

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Features
Winner of MDEA Award

Winner of MDEA Award confirms design excellence

The Alice PDx Portable Sleep System was a winner in the 2010 Medical Design Excellence Awards (MDEA) competition, in the category of general hospital devices and therapeutic products. This award recognizes features that provide enhanced benefits to their patients. The Alice PDx is easy for patients to set up and use in the comfort and privacy of their home.
Color-coded labels

Color-coded labels to reduce retesting

Color-coded labels located around the perimeter of the device, indicate where to connect the various sensor leads. The display shows the patient only the sensors that need to be connected. The sensor information and indicators help patients place the sensors correctly and reduce the need for retesting due to application errors.
Good Study Indicator

Good Study Indicator simplifies data collection

The Good Study Indicator visually displays the amount of good quality data in 25-percent increments on the Alice PDx display screen. As a result, a patient using the Alice PDx can easily communicate this information to the healthcare provider who can decide if the study needs to be repeated. The provider can then help the patient repeat the study. This can potentially reduce the amount of insufficient study data and repeat studies.
Sensor Application Reference Guide

Sensor Application Reference Guide assists the user

A helpful, color-coded, step-by-step diagram is included with the device to walk patients through the appropriate application process.
Optional ECG and ExG Yokes

Optional ECG and ExG Yokes for extra data

The Alice PDx device supports a single lead, six-lead, or seven-lead ECG. The optional ECG yoke provides a three-lead ECG (five wires) to help assess OSA in patients who may have cardiac comorbidities. The optional ExG yoke provides thirteen inputs to enable level-two application for advanced sleep analysis.
Multi-Night Recording

Multi-Night Recording for easy use

With the SD card memory and two-to-three night battery life, the Alice PDx can collect information from multi-night recordings when needed. The Alice PDx can be set to start and stop recording automatically to minimize the risk of the patient forgetting to do it.
Single Software Application

Single Software Application streamlines data collection

The Alice PDx can be connected directly to a computer running the proven Alice Sleepware software application. Alice Sleepware can display live or pre-recorded data in a resolution consistent with the computer hardware specifications. It provides a single software application for lab and portable testing.
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Specifications

Physical characteristics
Physical characteristics
Size
  • 5 L x 3 W x 2 H (12.7 x 7.62 x 5.08) "/cm
Weight
  • Approximately 8 oz (230 grams), weight does not include batteries
Channels
Channels
Total channels
  • Up to 21 with Optional EXG and ExG Yokes channels
Standard channels
  • Pressure Based (w/snore) and Thermal Airflow, zRIP Effort (2), Body Position, SpO2 (also Pleth and Pulse Rate), Respironics Therapy Device Parameters, Pressure and Flow from non-respironics therapy devices. channels
Optional Yokes/Channels (a)
  • ECG Yoke; 3-lead ECG providing 3 measured and 4 derived channels for a total of 7 channels
Optional Yokes/Channels
  • ExG Yoke: 4 Neuro Channels (EEG or EOG) and 3 Differential EMG, plus references and ground.
Input impedance
Input impedance
ECG
  • 10 Mω per Electrode 20 Mω differential
EMG
  • 2 Mω per Electrode 4 Mω differential
EEG
  • 2 Mω per Electrode 4 Mω differential
Bandwidth
Bandwidth
ECG (a)
  • 0.318 to 81 Hz
EEG b
  • 0.318 to 35 Hz
EMG a
  • 9.7 to 86 Hz
Input Signal Range
Input Signal Range
ECG b
  • ± 4 mV
EEG c
  • ± 500 µV
EEG d
  • ± 150 µV
Digital Resolution
Digital Resolution
Up to
  • 16 bits
Initial Sample Rate
Initial Sample Rate
Up to
  • 1 Hz
Max Storage Rate
Max Storage Rate
ECG/ExG
  • 200 Hz
Effort and Thermal Flow
  • 100 Hz
Pressure Flow
  • 200 Hz
Snore
  • 500 Hz
Body Pos.
  • 1 Hz
Communication interfaces
Communication interfaces
Serial Protocol
  • USB PC cable
SleepLink and Serial
  • communication cables for our therapy devices
System Power Requirements
System Power Requirements
Alkaline batteries
  • Three AA (1.5V) 0.43 watts typical

Documentation

Brochure (4)

Brochure

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