Production Engineering - Medical Equipment Division

PEMED HOME 6035 E. 38th Avenue, Denver, Colorado 80207 USA (303) 393-7800 FAX (303) 393-1482

Nihon Kohden Neurofax 21 channel EEG Electroencephalograph - $3,750

List: $56,600. MedCon: EX. Nihon Kohden Neurofax series 21 channel EEG recorder. Neurofax model EEG-4321 with a recessed CRT display.

General features:

• 21 channel paper recording
• stimulation side
• CRT display
• programmable operation
• y2k compliant
• Pattern programming and easy operation

Specific features:

• Extreme sensitivity for measuring extremely small electrical signals, to 1 microvolt (1/100,000 of a volt)
• Centralized computer control
• CRT display of measuring conditions, such as: Montage, Calibration voltage, Sensitivity
• Time constant
• High-pass filter
• reference
• Buffer amplifiers in electrode junction box
• 34 + 5 electrode terminals available: 23 electrodes for head configuration, 11 multipurpose input terminals, 2 BM terminals and 3 grounding terminals
• easy electrode impedance check (on both CRT and to paper)
• easy configuration of montage
• measurements of unipolar derivation: switching from same side hemispheric earlobe derivation, single side spheric earlobe derivation, average reference derivation and balance non-cephalic reference derivation.
• up to 8 amplifier setting configurations
• larger recording range by using channel invasion recording system
• calibration by square or sine wave
• Auto Ind Cal and calibration voltage mark recording functions
• Current-time mark recording functions
• 2 sets of auto-photic stimulation programs
• 3 function timer panel
• 2 sets of auto measurement functions
• concurrent recording of waveforms onto both monitor and data recorder
• various patient communication options (speak, microphone, video)
• connections to external computer via RS-232 and GP-1B

An overview of the system
Clock / timer unit, with clock, manual and record functions, reset and start		Photo stimulation control module, with frequency (Hz) setting, stimulation and pause modes. 2 automatic modes, manual, random and single modes, start, stop and reset
Control and programming panel
Some of the set up and programming screens:
head electrode control panel
head set up electrode patch box, with indicator LED lights and input connectors
Data recorder
View of right side of machine, with alternate input jacks for each input channel

This machine is still supported by the manufacturer. For Nihon-Kohden's web site, please click here: http://www.kohden.co.jp/intl/neurology.html

Unit as shown has a stimulation lamp.

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Production Engineering - Medical Equipment Division

6035 E. 38th Avenue, Denver, Colorado 80207 USA (303) 393-7800 FAX (303) 393-1482