Welch Allyn MicroTymp 3 Handle Operations Instructions

-400-200020020.501.01GRAGRCPRESSURE - DaPaYa - mmho+200 Vea - ccRTESTLPOWERCHARGEFEEDPRINTOperatingInstructionsPortableTympanometricInstrument

Testing3. Turn on the MicroTymp 2 Handle by pressing the TEST TEST button belowthe Liquid Crystal Display (LCD). The word “OPEN” appears on the LCD.Fi

NOTE: Due to changes in air pressure during a test, thesubject will feel slight pressure in the ear canal. During thebrief seconds when tympanometric

The memory buttons are labeled for the right ear and L for the leftear. When test results are stored in memory, the RIGHT STORE or LEFTSTORE me

LIQUID CRYSTAL DISPLAYFigure 8A sample of the Liquid Crystal Display is shown in Figure 8.OPENFigure 9The test has not begun since a valid ear cavity

TESTFigure 10The TEST message indicates that the test has started. Immediately followingthis message, test data will begin to appear.BLOCKFigure 11The

LEAKFigure 12The test cannot proceed since desired pressures within the ear have notbeen achieved.Possible causes:• probe tip is not completely sealed

RIGHT CLEAR/LEFT CLEARFigure 14A Figure 14BThe designated rightRor left L memory location contains no data.Either no data has been stored, or previous

RANGE ERRORFigure 16The RANGE ERROR message indicates that a large pressure changeoccurred during a test. If this message appears, press the TEST TEST

NEEDS CAL(ibration)Figure 18Something has caused the MicroTymp2 to fail an internal calibration test.All MicroTymp2 buttons have been disabled because

MicroTymp 2Completing a TestPrinting Memory ContentsFollow the steps listed below to print tympanometric data stored in theMicroTymp2 Handle:1. Place

AcknowledgmentsWelch Allyn gratefully acknowledges the assistance of Robert H. Margolis,Ph.D. of the University of Minnesota for his assistance in pre

4. To remove the printout, pull the paper forward and to the left or right totear it along the cutting edge.5. To obtain an additional copy of the tes

MicroTymp 2Completing a TestFigure 21Tympanogram Section of PrintoutThe tympanogram is a graph which records the admittance of the ear asa function of

If the numeric values are greater or less than the 90th percentile of thenormative data for a child or an adult, an asterisk appears under the C(hild)

Interpretive Messages Section of PrintoutThe interpretive messages section of the printout provides an interpretive,verbal description of the tympanom

Selecting Printout FormatsThe four switches used to select the printout format and printer mode ofoperation are located on the bottom of the Printer/C

MicroTymp 2Completing a Test21No messages(Switch 2)1234OFFTympanogramOnly (Switch 3)Tympanogramand Data (Switch 3)Messages(Switch 2)1234OFF1234OFF1234

Printing Interpretive Messages (Switch #2)No messages Depress the ON portion of the switch to select thisoption. This causes messages which interpret

MicroTymp 2Completing a TestPrinter Function MessagesIf tympanometric results are not printed, a message will appear describingthe reason. These messa

Printer Service CodesWhen the Printer/Charger is plugged into an electrical outlet, the greenPOWER indicator illuminates and the instrument beeps to

Appendix AGuide to TympanometryAural acoustic immittance measurements have become an integral componentof audiologic and otologic evaluation. One clas

ContentsMicroTymp2 – IntroductionMicroTymp2 Handle Components ...2MicroTymp2 Printer/Charger

Tympanogram CharacteristicsFigure 24 illustrates a MicroTymp2 tympanogram. A description of the keycharacteristics of the tympanogram follows.Figure 2

How the MicroTymp2 Instrument WorksA block diagram of a Welch Allyn MicroTymp2 is illustrated in Figure 25.Figure 25A 226-Hz probe tone is introduced

Normative Values for the MicroTymp2The normative values listed in Table 4 are taken from a study by Margolisand Heller (1987), and from the “Guideline

Interpreting Tympanogram ResultsAppendix AA-29Otitis Media with Effusion• Produces low static admittance(low peak height) tympanogram• Tympanogram is

A-30Positive Middle Ear Pressure• Produces positive TympanometricPeak Pressure• Indicative of acute otitis media, if peakis extremely positiveTympanog

Appendix AA-31Obtaining a Valid TympanogramTympanometric results, although accurate and objective, do require carefulinterpretation in conjunction wit

Conditions Which Artificially Flatten the TympanogramIn order to measure the mechanical properties of the middle ear, a tympano-metric device must be

Appendix AA-33Patent Tympanostomy Tube or Perforated Tympanic MembraneIn the case of a tympanic membrane perforation or a patent tympanostomytube, the

Low-Admittance Pathologies: Otitis Media withEffusion, Middle Ear Tumor, Ossicular Fixation,TympanosclerosisLow static admittance of the middle ear is

Appendix AA-35Middle Ear TumorA wide variety of neoplastic processes exist that invade the middle ear. Themost common is the keratoma (cholesteatoma),

Appendix C – Maintaining the MicroTymp2 EquipmentThe MicroTymp 2 Battery...C-43Recha

A-36Tympanic Membrane Abnormalities“Floppy” Tympanic MembraneThe tympanic membrane is normally a stiff, conically-shaped structure thatderives its sti

Conditions Which Cause Negative Middle Ear PressureFigure 32Negative pressure within the middle ear space will produce a tympanogramwith a negative ty

A-38

Appendix BGuidelines for Screening for HearingImpairments and Middle Ear DisordersIn a non-medical setting, tympanometry can be useful in determining

B-401/wEar Pain,Discharge?2Visual Inspection3AudiometricScreen5Peak YaToo Low?8GradientToo Wide?NO FURTHERACTIONWAIT 4-6WEEKSSTARTRepeatAudiometric Sc

Recommended Screening ProtocolThe recommended screening protocol is based on a four-part procedureconsisting of case history, visual inspection, pure-

Low static admittance (Peak Y [Ya]) may or may not be associated withsignificant middle ear disorders. In the absence of other positive findings,a Pea

Appendix CMaintaining the MicroTymp2 EquipmentThe MicroTymp2 BatteryThe MicroTymp2 rechargeable nickel-cadmium battery is intended for manycharge/disc

3. Remove the battery cover by lifting the bottom of the cover away fromthe probe tip. See Figure 36.Figure 364. Push down on the positive (+) end of

5. Insert the replacement battery by placing the positive (+) end of thebattery against the spring in the holder. Push the battery lightly tocompress

MicroTymp2 – IntroductionThank you for purchasing the Welch Allyn MicroTymp2 Portable Tympan-ometric Instrument.The Welch Allyn MicroTymp2 provides po

Recharging the BatteryTo recharge the MicroTymp2 battery, place the MicroTymp2 Handle in thePrinter/Charger well with the LCD and buttons facing you.

Figure 39Recycling the BatteryRecycling Nickel-Cadmium Batteries (North America Only)Welch Allyn employs the services of an agency which can disassemb

Paper ReplacementThe MicroTymp2 Printer/Charger signals the need for changing the paper inone of two ways:• A pink strip appears along the edge of the

2. Depress the FEED button to advance any remaining paper throughthe printer. Do not pull paper backwards through the printer. Removeand discard old

Cleaning, Disinfection and SterilizationCleaning the MicroTymp2 HandleDo not sterilize the MicroTymp2 Handle. Clean the Handle by wiping it witha dry

MicroTestCAVITY2.0cc0.5ccTest ButtonR-400-200020020.501.01GRAGRBPRESSURE - DaPaYa - mmho+200 Vea - ccAppendix DFunctional Checks of the MicroTymp2Hand

D-52MicroTestCAVITY2.0cc0.5ccR-400-200020020.501.01GRAGRBPRESSURE - DaPaYa - mmho+200 Vea - cc5. A properly functioning instrument will produce a flat

D-53Appendix D2432Troubleshooting the MicroTymp2 HandleSymptom Possible Cause Possible SolutionHandle Does No battery. Put battery in.Not Turn OnBatte

Software VersionThe test pattern also includes the software version for the MicroTymp2Printer/Charger.Normative Data ReferenceThe test pattern is foll

Appendix EService and Warranty InformationServiceRepairRepair must be performed by authorized personnel. Failure to do so invali-dates the MicroTymp2

MicroTymp2 Handle Components2Figure 1ARLTESTLiquid CrystalDisplay (LCD)Left MemoryButtonTest ButtonRight MemoryButtonInfrared DataTransfer WindowBatte

WarrantyMicroTymp 2 InstrumentWelch Allyn Inc. warrants the MicroTymp 2 Handle and Printer/Chargerto be free of original defects in material and work

Appendix FTechnical SpecificationsFigure 46Appendix FF-57-400 -200 0 20020.501.01GRAGRBPRESSURE - DaPaYa - mmho+200 Vea - ccRLTEST3.68 in9.35 cm7.32 i

F-58Probe Tone:Frequency: 226 Hz ±3%Amplitude: 85 ±3 dB re 20 µPa in an ANSI HA-1 (2.0 cc) couplerDistortion: 5% maximum total harmonic distortion in

Printer Paper (Welch Allyn #56100):4.42" (112 mm) wide with corePink end-of-roll indicatorApproximate number of printouts per roll:200 – Tympanog

F-60Standards ComplianceETL listed to comply with UL 2601ETL listed to compy with CSA C22.2 No. 601-1ETL listed to comply with IEC 601-1, Amendment 1M

Appendix GMicroTymp2 ReplacementParts and AccessoriesBattery#72900 2.4 VNickel-Cadmium BatteryScrew for Battery Cover#236081Screw Driver forBattery Co

Replacement Power CordsG-62Carrying Casefor MicroTymp2and AudioScope3(#05276)-400 -200 0 20020.501.01GRAGRBPRESSURE - DaPaYa - mmho+200 Vea - ccRLTEST

ReferencesAmerican National Standards Institute (1987). “Specifications for Instrumentsto Measure Aural Acoustic Impedance and Admittance (Aural Acous

64Occupational Safety and Health Administration (1992). “OccupationalExposure to Bloodborne Pathogens.” OSHA 3127, 1992.Terkildsen, K., Thomsen, K. A.

Glossaryacoustic admittance (Ya) The ease with which acoustic energy is trans-ferred into a system; the ratio of volume velocity to sound pressure.ac

MicroTymp2 Printer/Charger ComponentsFigure 1BPreparing to Use the MicroTymp2 Handleand Printer/ChargerThe following is a list of important facts to n

otorrhea External ear discharge.otosclerosis A genetic abnormality of the temporal bone, frequently causingfixation of the stapes and conductive heari

Printed in U.S.A. Part No. 236311-2Welch Allyn, Inc.4341 State Street RoadP.O. Box 220Skaneateles Falls,New York 13153-0220U.S.A.Tel.: 800-535-6663 (U

• If the MicroTymp 2 set has not been stored at room temperature, allow45 minutes for it to return to operating temperature range (15-35˚C or59-95˚F)

MicroTymp2 – Completing a TestMicroTymp 2Completing a TestObtaining a TympanogramSelecting a Probe Tip1. After examining the subject’s ear canal openi