Instrumen OAE, BERA / ABR, ASSR merek GSI - Grason Stadler Type Audera Made in USA

Features

GSI Audera Main Unit

• Separate output jacks for left, right and bone transducers, and a free-field speaker output eliminates time wasted switching between transducers
• Built-in mains isolation transformer for safety provides isolated power for a notebook computer and an inkjet printer
• Standard USB interface connects to virtually all of the latest computers
• High-speed serial interface connects to the GSI Audera digital amplifier subsystem

GSI Audera Digital Amplifier Subsystem

• Small size and weight facilitates convenient placement near the patient
• Full two-channel capability for ispilateral/contralateral ABR recordings Isolation for patient safety
• Digital connection to main unit minimizes interference from external noise sources
• Built-in impedance measurement with LED readout at the amplifier minimizes preparation time

GSI Audera OAE Probe

• Superior probe design for neonatal to adult testing
• LED indicates test status
• Backward compatible with all GSI Audera systems

GSI Audera is Compatible With Most Personal Computers

• 32-bit application software operates in several versions of Windows
• Operates with display resolution of 1024 x 768 or higher
• Uses standard Windows drivers for printing on the device of your choice
• Patient database can be backed up on most Windowscompatible archiving devices

GSI Audera’s Standard TIP-50 Insert Transducers

• Foam tips of various sizes eliminate the problem of collapsing ear canals
• Soft 2.5 and 3 mm tips included for tiny infant canals
• Silicone tubes create an acoustic delay, minimizing the click stimulus artifact in ABR recordings
• Stimuli are calibrated in dB HL for ASSR testing and in dB nHL for AEP — calibration data is provided for each transducer set

It is now recognized that early intervention is critical to speech and language development in hearing impaired infants and children. Available interventions include fitting a hearing aid before six months or performing a cochlear implant as early as one year of age. Selection of the proper plan requires accurate, detailed information about the hearing loss at all frequencies important for speech and language development. This makes it critical that hearing clinicians have an objective, reliable method for measuring frequency specific hearing thresholds in neonates and infants with mild to profound hearing losses. While various technologies including OAE, ABR, and visual reinforcement audiometry have been used, their limitations prevent them from fully meeting the need.

Instrumen OAE, BERA / ABR merek GSI - Grason Stadler Type AUDIOscreener+ Made in USA

Benefits

Three Models

Choose the model to fit the screening needs of your hospital, office, or practice – OAE Only (includes DPOAE and TEOAE), ABR Only, Combination unit.

Requires No Interpretation of Data

• Only a single button push is necessary to initiate an

• OAE or ABR screening, producing a quick and clear Pass or Refer result.

• Objective and Accurate Screening

• Perform objective and accurate hearing screening that has been clinically proven to be highly specific and sensitive with a minimal refer rate.

Time Savings

OAE screening only takes 20 seconds per ear – saving valuable testing time while producing an additional cost saving benefit.

Portability And Versatility

The GSI AUDIOscreener+ is a handheld, battery-operated hearing screening device designed to test newborns, children, adults and all difficult-to-test patients.

High-Volume Screening

The GSI AUDIOscreener+ is designed for use by minimally trained staff (i.e. technician or volunteer), allowing for rapid and easy high-volume screening across multiple locations.

Probes Or Comfort Cups™

The GSI AUDIOscreener+ can be used to perform an ABR test with probes inserted into the patient's ear canal or with the GSI COMFORT CUPS secured over the patient's ear.

Wireless Data Transmittal

Up to 300 patient records can be wirelessly transmitted to and from a desktop computer via an infrared port. This results in clear, concise, easy-to-read, full page reports.

Total Screening Accuracy

Real ear calibration for OAE and ABR promotes total screening accuracy, unlike competitor systems whose stimuli can vary by many dB.

Reduce The Incidence Of False Positives

Limited OAE and ABR diagnostic data is gathered to help ensure that no child with a hearing impairment goes undetected and to reduce the incidence of false positives (children with normal hearing who receive Refer results). Data can be read by a staff audiologist or be emailed to a consulting audiologist.

Unparalleled Customer Service

The GSI AUDIOscreener+ is supported by more than 60 years of customer service as well as technical support.

Instrument OAE, ABR merek OTOMETRICS Type MADSEN AccuScreen Made in Denmark

Technical specifications:

Measurement techniques

TEOAE

• Evaluation method: Noise-weighted averaging, counting of significant signal peaks
• Stimulus: Non-linear click sequence
• Stimulus level: 70-84 dB SPL (45-60 dB HL), self calibration depending on ear canal volume
• Click rate: Approx. 60 Hz
• Frequency range: 1.5 to 4.5 kHz
• Display: Statistical waveform, measurement progress, TEOAE detection level, noise level

DPOAE

• Evaluation method: Noise-weighted phase statistics
• Stimulus: Primary tone pair, f2/f1 = 1.24
• Available test frequencies: Configurable, f2 range 1 to 6 kHz
• Range of protocols (default: 5, 4, 3, 2 kHz (PASS at 3 out of 4))
• Test level: L1/L2 = 60/50 or 65/55 dB SPL
• Display: DPOAE level, test progress, noise level, DP-Gram
• Result display: Overall PASS/REFER, DP-Gram with DPOAE and noise level

ABR

• Evaluation method: Noise-weighted averaging and template matching
• Stimulus: 30, 35, 40 or 45 dB nHL click
• Click rate: Approx. 80 Hz
• Impedance sense signal: 1 kHz square wave
• Impedance test range: 1 to 99 kΩ
• Impedance accepted for test: < 12 kΩ
• Impedance control: Before test, periodically during test, stimulus continues during impedance control
• Display: Statistical graph, test progress, EEG-level, ABR detection probability
• Electrodes: Disposable hydrogel electrodes

Dimensions

Approx. 202 x 73 x 30 mm (8 x 2.8 x 1.2 inches)

Weight

Approx. 240 g (8.5 oz) excluding battery

280 g (9.9 oz) including battery

Display

Type: Color, TFT, touch screen with adjustable LED backlight

Dimensions: 71,5 x 53,6 mm (28.1 x 21.1 inches)

Resolution: 240 x 320 pixels

Keystroke durability: min. 1 million repetitive strokes per screen point

Keypad

Resistive Touch Screen (can be used with gloves)

Memory

Patient memory capacity: Max. 250 patients / Min. 500 tests

Connectors

OAE probe connector: 14 pin ODU Medisnap - For OAE Probe or ABR ear coupler cable

ABR (ABR version only): 4 pin ODU Medisnap - For ABR electrode cable

Real time clock

Integrated real-time clock for time-stamping of measurements.

The clock is automatically synchronized with PC clock when docked.

Backup: Min. 5 days, when battery is removed from unit

Data interfaces

PC: IR data transmission to Docking Station - USB interface from Docking Station to PC

Transport and storage environment

Temperature range: -20 - +60°C (-4 - 140 °F)

Humidity range: 20-80 % rel., non-condensing

Air pressure 500 hPa to 1060 hPa

Operating environment

Temperature range: 10 - 40°C (50 - 104°F)

Humidity range: 30-80 % rel., non-condensing

Air pressure 600 hPa to 1060 hPa

Standards:

Otoacoustic emissions: EN 60645-6, Type 2
Auditory evoked potentials: EN 60645-7, Type 2
Patient Safety:
• EN 60601-1, Inter nally Powered, Type BF, IPXO
• UL 60601-1
• IEC 60601-2-26
• IEC 60601-2-40
EMC: EN 60601-1-2
Power supply and battery
Battery type: Rechargeable Li-ion 3.7 V/1800 mAh (6.7 Wh), fully charged
Estimated battery life: 8 hours of continuous use (based on a typical use scenario
Actual use can influence the battery life time)
Battery level indicator: 5-step battery level indicator
Charge time in AccuScreen docking station: 80% charged 4½ hours. Fully charged 6 hours
PC interface
Interface type: USB 2.0, Full-speed
USB Power: Uses <100 mA of current from the USB interface
Printer interface
Interface type: RS232
Connector type: 6-pol Mini Din
DC power input
Input voltage: 5 V DC ±5%
Max. power consumption when AccuScreen is docked: 5VA (5V, 1.0 A)
Max. power consumption when AccuScreen is not docked: 0.25 VA (5V, 50 mA)
Power adapter
Input voltage/range: 100-240 V AC, 50-60 Hz
Output voltage: 5.0 V DC/min. 1.0A
Mains plug types: US, UK, Europe and Australia
Probe
Flexible, shielded cable, approx. length: 120 cm (approx. 55 inches)
Dimensions
Probe body: 20 mm Ø x 23 x 11 mm (0.8” Ø x 0.9” x 0.43”)
Probe tip: 3.3 mm Ø x 10 mm (0.13” Ø x 0.4”)
Weight
Probe incl. probe tip: Approx. 4.5 grams
Eartips
Standard (cylindrical): 4 sizes (3.7 - 5 mm)
Tree tip: 1 size (4 - 7 mm)
Foam tip: 1 size (13 mm)
ABR electrode cable
Flexible, shielded cable, approx. length: 140 cm (approx. 55 inches)
ABR ear coupler cable (optional)
Flexible, shielded cable, approx. length: 145 cm (approx. 57 inches)
Device class
IIa (according to Council Directive 93/42/EEC Appendix IX)
Standard accessories
The MADSEN AccuScreen comes with customized Carrying case, Docking station including Power Adaptor and USB Cable, Starter kit, OAE probe (DPOAE/TEOAE or TEOAE only), Battery, ABR electrode cable (ABR version only), ABR Tester (ABR version only), Cleaning cloth and User Manual.
Optional accessories
Label Printer with printer cable, ABR ear coupler cable and External battery charger. Standard accessories and optional accessories may vary from country to country - please consult your local distributor.

Instrument ABR/BERA/ASSR merek OTOMETRICS Type ICS Chartr EP 200 Made in Denmark

Auditory Evoked Potential - At its best!

The ICS Chartr EP 200 builds on the expertise of our ICS Chartr line. Creating smaller, portable systems while maintaining the easy-to-use software interface valued by our customers. New features maintain the user friendliness and assist you in performing any AEP test with ease.

Comprehensive test battery
ICS Chartr EP 200 provides a comprehensive test battery for diagnosing a wide range of auditory and vestibular disorders. Users can create their own protocols or get an immediate start with the pre-loaded ones.

Easy navigation
The software interface ensures a smooth work process. Three easy access tabs make acquiring and reviewing data quick and intuitive. The New Test tab gives direct access to test protocols, the Quick Settings tab gives easy access to protocol parameters and the Review tab gives instant access to all saved data.

ICS Chartr EP 200 at a glance:
• Click Evoked ABR
• Toneburst ABR
• Electrocochleography
• Auditory Middle Latency Response (AMLR)
• Auditory Late Response (ALR)
• P300 - optional
• Vestibular Evoked Myogenic Potential (VEMP) - optional
• Auditory Steady State Response (ASSR) - optional

Improve patient care with VEMP

The ICS Chartr EP 200 comes with an optional VEMP module for a more comprehensive vestibular assessment. The VEMP module utilizes EMG monitoring with a unique device that eases the testing procedure and allows users to test with confidence.

Readily accessible VEMP protocols
A list of VEMP protocols are added under the New Test tab already known from the EP interface. Available protocols include: toneburst and click air conduction VEMP protocols, bone conduction VEMP protocol and OVEMP protocol. Users can also create their own.

Instant EMG monitoring
“The tonic state of the SCM muscle is a critical parameter in the recording method of the VEMP. Thus, controlling the level of tonic EMG would appear to be a prerequisite for the accurate interpretation of the VEMP”(1).

The ICS Chartr 200 VEMP monitor records the EMG level and thus makes VEMP testing a lot easier. The monitor assists in controlling the amount of tonic level EMG by making the patient and tester aware of the level through a series of lights. The monitor can be easily mounted or held by the patient during data collection.

Efficient Multi-frequency ASSR

The optional Auditory Steady State Response (ASSR) module is a great addition to the ICS Chartr EP 200, which allows you to obtain frequency specific, auditory data, quickly and efficiently.

RapidASSR™ algorithm
The RapidASSR™ response detection algorithm makes it possible to collect up 12 frequencies simultaneously (6 frequencies per ear). The proven algorithm uses a Fourier Linear Combiner with an adaptive filter and circular T2 statistical analysis*.

Instant monitoring of EEG and impedance values
The EEG is always viewable during data collection, making it easy to check the patient’s state. Impedance can be checked at any time during testing without interfering with data collection. Both timesaving features, ensuring that accurate data are collected.

Technical specifications:

Acquisition Options

Sweep Time: 5.0 – 9000 msec
Rate: 0.2 to 180/sec
A/D Resolution: 16-bit
Artifact Rejection: 99% full scale (adjustable)
Points per Trace: 600

Channel Options

Channels: 2 channels with optional 3rd channel for VEMP

Monitoring

Gain: 1k, 1.5k, 2k, 2.5k, 3k, 5k, 7.5k, 10k, 15k, 20k, 25k, 30k, 50k, 75k, 100k, 150k, 200k, 250k, 300k, 500k
High Pass Filter (Hz): 0.2, 0.3, 0.5, 1, 1.5, 2, 5, 10, 20, 30, 50, 100, 150, 200, 500, 1000
Low Pass Filter (Hz): 15, 30, 50, 75, 100, 150, 250, 300, 500, 600, 1k, 1.5k, 2k, 3k, 5k, 10k
Notch Filter: 50 or 60 Hz set by the manufacturer

Stimulus Options

Transducer: Headphones, Insert Earphones (automatic 0.8msec delay correction), Bone Oscillator (B71)
Stimulus Type: Click & toneburst
Masking: White noise
Click Duration: 100 usec
Toneburst Freq (Hz): 125, 250, 500, 1k, 1.5k, 2k, 3k, 4k, 6k, 8k
Toneburst Ramp/Plateau: User defined (cycles)
Toneburst Envelope: Linear, Hanning, Blackman, Gaussian
Intensity: 132 dB pe SPL; user definable nHL
Polarity: Rarefaction, condensation, alternating
Calibration Reference: Calibration table in dB SPL with a user definable normal hearing threshold table in nHL

VEMP Monitor

Channel: Monitor 1 channel (left or right side)
VEMP EMG Level: User defined minimum and maximum acceptable level

Chartr EP 200 Dimensions/Weight

Chartr EP 200 main unit: 4.9cm x 34.2cm x 28.7cm (2” x 13.6” x 11.3”) – 2.7kg (5 lbs 7oz)
Chartr EP 200 Preamp: 3cm x 9.9cm x 16.4cm (1.19” x 3.88” x 6.44”) – .27kg (9.5oz)
Chartr VEMP Monitor: 2.9cm x 6.2cm x 9.5cm (1.13” x 2.44” x 3.75”) – 2.0kg (4.5oz)
Interface: USB to PC
Power Supply: 15V DC/2A
Safety: Chartr EP 200 was designed to meet these standards EN 60601-1, Class II, Type BF, IPXO; UL 2601-1; CAN/CSA-C22.2 No 601.1-90

Computer Minimum Requirements

Processor: Pentium M or Pentium 4
RAM: Minimum 512 MB available RAM
Bus Support: USB 2.0
OS: Microsoft XP Professional - Service Pack 2 or Vista Business
CD Drive: CD-R/W
Display Resolution: Minimum screen resolution of 1024 (horiz) x 768 (vert) at 96 dpi. At Large size (120 dpi) setting, minimum resolution is 1280 (horiz) x 960 (vert)
Display Color: 32 bit color.

ASSR

Number of channels: 1
Stimuli: 250, 500, 1000, 2000, 4000, 8000 Hz (up to 6 per ear) presented monaurally or binaurally
Threshold search/ 0 - 120 dB HL (insert phones), 0 - 110 dB HL (headphones)
upper lower limit: 0 - 60 dB HL (bone oscillator), 5 dB steps
Masking: White noise up to 100 dB HL
AM/FM Modulation: 20 to 105 Hz(1 Hz per step); AM depth - 0 to 100% (5% per step); FM depth - 0 to 25% (5% per step)
Gain: 1k, 2k, 3k, 5k, 10k, 20k, 30k, 50k, 100k, 200k, 300k, 500k
High Pass/Low Pass Filter: Exclusive Chartr narrow filters for RapidASSRTM
EEG: Online display during data collection or when collection is paused
Search Options: Quick Search or Straight Descent
Electrode Montage: Cz to Nape or Cz to Linked Mastoids
Test Protocols: Test protocols included for sleeping and awake patients. Protocols can be created and customized