Clinical Impedance Audiometer AZ26
Contents
1. Clinical Impedance AZ26 Audiometer Interacoustics AZ26 Applications The AZ26 clinical impedance audiometer is built to meet the demands of clinics and hearing specialists who require a compre hensively specified middle ear analyzer Tympanometry with a range of pressure limits is available together with an extensive test battery of acoustic reflex tests which include reflex decay and latency measurement Eustachian Tube Function may be evaluated even with a perforated eardrum To permit the easy checking of hearing thresholds an air conduction audiometer is incorporated within the AZ26 A total of 40 internal memories are available for storage of the various test results All testing can be performed manually or automatically and pre programmable test sequences may be run automatically by the selection of a single button thus providing quick and easy diagno stic evaluation To ensure easy and accurate diagnosis all test results are presen ted on line as clear graphical records on the high resolution LCD screen Printouts are available either using the fast built in thermal printer or via connection to a PC Tympanometry When performing tympanometry in manual mode the pressure can be adjusted using the precision rotary control This ensures the operator accurate adjustment In automatic mode pressure limits and pump speed can be preset from a range of values All results are displayed on line and may be shown in2. tory default settings If required test parame tailored to individual requirement by modify Automatic Tympanometry Pump speed and pressure limits as well as the direction of pressure sweep may be changed to meet specific require ments Special An Automatic Test Sequence Four different test sequences may be programmed by the user In each test sequence the user has complete freedom in tailoring the proce dure to meet desired characteristics Using this facility it is possible to test both ears consecutively and to have a printout automatically produced upon completion of the tests This highly flexible system can provide time saving yet accurate procedures in the clinic Automatic ETF Tests Pressure limits and timing characteristic can be modified as requested gt e PrintView enables monitoring of the AZ26 and the printing of test results In developing this software maximum attention has been given to provide a program which is easy to use e laBase95 is similar to PrintView but incorporates a database for general pa tient data and hearing aid infor mation e NOAH hearing aid fitting software may also be used for storing data from the AZ26 The IA NOAH Imp Module from Interacoustics is requi red for this purpose 7 ah Tests manual and automatic modes You are re set automatic procedures in their fac ters and automated test routines can be ng the user accessible set ups Automatic Audiomet
3. Pass Intensities See table Frequency Accuracy 3 Harmonic Distortion Less than 3 Contralateral Stimulation Frequencies 250 500 1000 2000 3000 4000 6000 8000 Hz Noise Wide Band High Pass Low Pass Intensities See table Frequency Accuracy 3 Harmonic Distortion Less than 3 Step Size 5 2 1 dB Step Accuracy 0 5 dB Compliance Accuracy 5 or 0 02 ml Optional Parts APS2 Patient Signal TPR26 Recording Paper AZE26 Set of Eartips Mushroom ATE22 Set of Eartips Parachute CAI 222 Calibration Unit 0 2 5 ml CATI 227 Calibration Unit 0 2 0 5 1 2 3 4 and 5 mli IES 2 Impedance Ear Simulator Interacoustics www Interacoustics dk Reflex Decay Stimulus duration 10 or 30 seconds Stimulus as above Reflex Latency Manual or in automatic set up Audiometer Type 4 Frequencies 250 500 1000 2000 3000 4000 6000 8000 Hz Intensities See table Frequency Accuracy 3 Harmonic Distortion Less than 3 Auto Threshold Determination Modified Hughson Westlake according to ISO 8253 1 Built in Printer Thermal printer Paper width 112mm Computer Communication Built in RS232C input output computer interface Power 100 110 120 220 230 or 240V AC 50 60 Hz Dimensions L x W x H 48 x 40 x 16 cm 19 x 16 x 6 inches Weight 9 5 kg 21 Ibs Air Freight Packing 76 x 55 x 25 cm 30 x 22 x 10 inches Gross weight 14 0 kg 31 Ibs Consumpt
4. ay tests are available with ipsi or contralateral stimula tion The resulting decay value is then cal culated and displayed ETF 1 Eustachian Tube Function for ears with unperforated eardrums can be evaluated by recording three tympanograms on the same screen This method uses the William s procedure ETF 2 For ears with perforated eardrums the Toynbee manoeuvre can be employed to evaluate the Eustachian Tube TH DHTH TEE PLE TDA Ele tie ii a The ETF 1 fest proide Jor ETIT grams for easy comparison MA A Mee Audiometry An air conduction audiometer is provided for determining hearing threshold either manually or by using a patient controlled automatic test procedure Special Four different automatic test sequences may be easily programmed into the AZ26 Use of these predetermined procedures enables fast and reliable testing which may if required be performed by an assistant aai TEE It is easy to sleet one sof the test sequen ces pre programmed by the user to meet a specific requirement Windows Based Softwar Computer Connection The AZ26 is equipped with RS232C or inter connection with a suitable computer The Windows based software described above v enable a PC to be used for monitoring the t results as well as providing printing and sto facilities Custom Made Automatic The AZ26 is very easy to operate in both the however not restricted to working with the
5. either a compensated or non compensated format Complete print outs are available also for manually obtained tympanometry curves Probe System The probe design of the AZ26 has been optimised for easy hand held operation as well as for use with the clinical headband When used with the headband the probe tip itself can be detached enabling self suspended positioning in the ear This arrangement provides the greatest possible accuracy which is particularly important in the clinical evaluation of small deflection reflexes and in decay recording Fitting the eartip to the ear canal is assisted by status indicators on the instrument s LCD screen as well as on the probe itself Reflexes Acoustic reflexes may be recorded ipsilaterally or contralaterally using a wide range of stimuli which includes various types of noise Screening procedures as well as advanced procedures revealing threshold and reflex growth are available as automatic test modes Mixing manual reflex testing with an automatic reflex test se quence is possible and ample memory is available allowing sto rage of up to 16 reflexes per ear Pressure offset may be applied Latency A very detailed recording of the first 300ms of the reflex following stimulation can be displayed for evaluation The latency time is automatically calculated Both ipsi and contralateral stimulation are available LM aul LJ Li Li uu Decay 10 second or 30 second dec
6. ion Max 60 VA Construction Painted metal cabinet Included Documentation Unpacking and Installation Instructions Operation Manual with diagnostic evaluation tools CE Multilingual Instruction for Use Service Manual Computer Connection IFC59 25 pins Computer Cable IFC69 9 pins Computer Cable PrintView software laBase95 software IA NOAH Imp module for NOAH I A PAX Imp module for PAX Sales and Service in your area
7. permanent memory Tests Tympanometry Manual or automatic Eustachian Tube Test Manual or auto matic Normal eardrum or perforated eardrum Reflexometry Including decay and latency tests Automatic or manual Automatic reflex detection 16 tests per ear Audiometry Manual or automatic Patient controlled Hughson Westlake test according to ISO 8253 1 Impedance Type 1 Manual or automatic control Probe Tone 226 Hz 1 85 dB SPL 1 5 dB Harmonic Distortion Less than 5 Air Pressure Control Manual or auto matic Pressure Range 600 to 300 daPa Maximum Limits 800 daPa to 600 daPa Pressure Accuracy 10 or 10 daPa Ordering information Included Parts TDH39 Earphone and Headband Probe System BET50 Complete Set of Eartips Power Cable 110 or 230 V please specify PCR AZ26 Dust Cover 3 Rolls of Recording Paper TPR26 Manufactured by Interacoustics Phone 45 6371 3555 Fax 45 6371 3522 e mail Info interacoustics dk Mail Interacoustics DK 5610 Assens Denmark Compliance Range 0 1 to 6 0 ml Compliance Accuracy 5 or 0 1 ml Frequencies and Maximum Intensities Ipsi Contra _ Audiometry Hz dBHL dBHL dBHL 250 9 290 1000 110 120 10 6000 120 100 sooo 100 100 wB 110 120 HP 110 120 P 110 120 Ipsilateral Stimulation Frequencies 500 1000 2000 3000 4000 Hz Noise Wide Band High Pass Low
8. ry The automatic test procedure is perfor med in accordance with the International Standard ISO 8253 1 A 2 out of 3ora3 out of 5 response criteria may be assign ed to this automatic procedure Automatic Reflex Test The set up parameters for the automatic reflex test allow complete freedom in assigning stimuli and intensities for up to a maximum of 8 reflex tests per ear In addition to pre set stimulation levels a number of test protocol options are available One of these is particularly suitable for the evaluation of reflex growth as well as for pinpointing the reflex threshold Each stimulus can be assigned to ipsi or contralateral presentation as required The tympanogram is displayed here non compensated with a 3 ml scaling See Beg Detailed ies TE also observe the other recorded reflexes A group of reflexes displayed for easy evaluation of reflex growth z reflex PEE test showing the actual recording and the decay as a percentage E hy The ETER ERGI test provides accu rate detail and calculates latency time AZ26 Specifications Standards Safety EN 60601 1 class 1 Type B Impedance EN 61027 ANSI S3 39 Type 1 Audiometer EN 60645 1 ANSI S3 6 Type 4 Approved for Medical CE marking by T V 0123 Identification No 0123 Calibration Impedance EN 61027 ANSI 3 39 Audiometer ISO 389 1 Calibration is performed via the instrument s front panel and is stored in a
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