Clinical Systems - Comet Portable PSG

PSG Systems Table of Contents
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Comet® Portable PSG - Recording & Review

Comet Portable PSG system is supplied with the latest high-performance lap-top computer. A wide selection of accessories can be added. Comet base system is also available.

These powerful, easy-to-use PSG systems consist of the high response 50-channel AS40 Amplifier System, a Personality Module with electrode inputs designed especially for PSG, and TWin PSG Record and Review Software. These flexible systems upgrade easily to also record EEG studies. Grass's powerful Panorama digital video option, FASS Fully-Automated Sleep Stager, TWin Companion EKG Holter software and a wide selection of supplies and accessories are also available.

See printers and video monitoring equipment for information.

FEATURES

• Compact design that is rugged, lightweight, and easy to use
• On-board analog to digital conversion for interference-free recordings
• Easily connect to any PC with the on-board Ethernet connection
• Flexible enough for both EEG and PSG applications
• Up to 50 total available channels
• Integrated pulse-oximeter connection providing SpO2 and heart rate
• Easy, identifiable electrode input with the head and body diagram layout
• On-board impedance checking and calibrations at the amplifier system
• Easily mounted next to a patient bed or attached to a cart
• Limited Lifetime Warranty on Grass Technologies manufactured parts

Amplifier System - reliable, state-of-the-art

Grass Technologies amplifiers are world-renowned in the field of neurophysiology for their quality, reliability, simplicity, and serviceability. At the heart of the Comet PSG system is the AS40 Amplifier System. The amplifier is designed specifically for the PSG and EEG monitoring lab and combines the latest digital design techniques with years of amplifier design and manufacturing experience.

The AS40 is a compact 40-channel AC amplifier unit which is expandable up to 50 channels. An optional 8-channel DC input module and pulse oximeter allow for an additional 10 channels of data. This flexibility allows for wide range of physiological parameters to be monitored and recorded.

The amplifier system provides for patient safety isolation, signal conditioning (physiological signal amplification and filtering), and digitization. Communications with a host computer are accomplished using TCP/IP protocol over a 10BaseT Ethernet network or dedicated cable. A host computer, using TWin software, sets the sample rate, starts and stops the data transmission, monitors the digital data, and stores it to hard disk.

An intuitive user interface with LCD screen is present with the amplifier. From the amplifier itself, a user is able to implement such features as electrode impedance checking, amplifier calibration, and photic stimulator control. Also from the LCD display a user is able to obtain information such as connection status to the host computer, and oximetry/pulse rate information when an oximeter is in use.

Personality Modules
The flexible design of the amplifier allows different Personality Modules to be used. A patented concept*, the Personality Module communicates with the TWin software for setup and configuration of the system. Personality Modules are tethered with a Quick Disconnect feature. The SPM-PLUS Sleep Personality Module is supplied with the amplifier in Comet PSG systems.

The SPM-PLUS provides 30 AC channels and can be worn by the patient or conveniently placed bedside. The compact headbox is especially useful with the Comet PSG system which includes all the latest features for AASM requirements. The powerful bedside amplifier and fully-featured TWin software make Comet the leading choice of sleep professionals.

An optional UPM-PLUS, Universal Personality Module, is also available for extended sleep studies. The UPM-PLUS offers a combination of referential and bipolar inputs for a total of 40 AC channels.

* Patent Number: 5,265,607