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NUCLEUS® 7 HYBRID MODE PROFESSIONALS GUIDE

Troubleshoot

This chapter provides troubleshooting procedures for the Hybrid system, only for clinician-
oriented tasks.

For product-speciﬁc troubleshooting, see:
• the

Nucleus 7 Sound Processor User Guide

• the

Nucleus 7 Hybrid User Guide

• the

Custom Sound

®

Software User Guide

or the online help.

Equipment required

Check regularly that the items listed below are in good repair and well stocked. Have
plenty of spare parts – especially receivers, domes, earhooks and wax ﬁlters.
•  Nucleus 7 Hybrid Fitting Kit
•  Cochlear EAC200 Series Stetoclip
•  Cleaning set, wax loop, tissues
• Replacement

ProWax

ﬁlters

• Vent

cleaner

• Cochlear EAC200 Series Screwdriver.

Troubleshooting procedure

1. Interview

the

recipient.

2.  Take an otoscopic examination and ensure there is no wax blockage in the ear canal.
3.  Inspect the sound processor thoroughly.
4.  Ensure that thresholds have not changed by repeating pure tone audiometry. Identify

any middle ear issues with Otoscopy and Tympanometry.

5. Refer to the following table for suggested solutions.

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18
19
20
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22
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Summary of Contents for Nucleus 7 Hybrid Mode

Page 1: ...Nucleus 7Hybrid Mode Professionals Guide CP1000 ...

Page 2: ... who have undergone formal training on how to ﬁt the Cochlear Nucleus 7 Sound Processor model number CP1000 in Hybrid mode using Cochlear Custom Sound software Version 5 0 or above It provides guidance on Hybrid mode candidate evaluation and the steps involved in selecting ﬁtting and maintaining the Hybrid mode components NOTES Refer to the following documents for further information the Custom So...

Page 3: ... the Hybrid system 10 Wear the ear lock 11 Remove the Hybrid receiver 12 Program Hybrid mode 14 Program new Hybrid mode recipients 15 Convert existing CI only or Hybrid mode recipients 15 Care and maintenance 16 Recipient care tasks 16 Clinician only care tasks 17 Troubleshoot 18 Equipment required 18 Troubleshooting procedure 18 Observations possible causes and solutions 19 Shape the Hybrid recei...

Page 4: ...range of Cochlear implants Contact Cochlear for the latest information on compatible implants 2 Check candidacy Perform audiometric testing and counselling to determine if the recipient is a candidate for Nucleus Hybrid mode see Candidacy on page 4 3 Fit the Hybrid system to the recipient Select the correct Hybrid receiver and dome to ﬁt the recipient s ears see Fit the Hybrid system on page 6 4 A...

Page 5: ...t plugs into the Hybrid earhook and a speaker unit that is worn in the ear The speaker unit has a replaceable wax ﬁlter a disposable dome with a built in wax ﬁlter NOTE If you prefer recipients can use a custom earmould instead of a dome for the 60 and 85 Hybrid receiver sizes For details on using and caring for the Hybrid system see the Nucleus 7 Hybrid User Guide Hybrid Earhook cable speaker uni...

Page 6: ... include air and bone conduction thresholds and tympanometry as indicated to detect the presence of any temporary or permanent conductive component The current ﬁtting range for the Hybrid receiver is shown below Post operative air conduction thresholds within the shaded area can be ampliﬁed by Nucleus Hybrid mode Frequency Hz Hearing Threshold dB HL If repeat post operative audiometric testing sho...

Page 7: ... Hybrid mode on older sound processors can be converted to the Nucleus 7 system with Hybrid mode To do this you need to ﬁt them with a Nucleus 7 Sound Processor and Cochlear Hybrid receiver and dome and reprogram their system with Custom Sound software Version 5 0 or above See Convert existing CI only or Hybrid mode recipients on page 15 ...

Page 8: ...t audiogram entered in the Custom Sound software 2 The Custom Sound software will suggest a speaker unit 60 85 or 100 NOTE You can use a different speaker unit than suggested depending on the ampliﬁcation needed or if it provides a better physical ﬁt 3 Use the double sided Nucleus 7 Fitting Template in the Hybrid Fitting Kit to determine the receiver cable length Use the blue side for the left ear...

Page 9: ...ve a single vent Cochlear Hybrid Power Dome Power Domes ﬁt more snugly and provide better headroom before feedback suiting recipients with severe hearing loss NOTE If you prefer recipients can use a custom earmould instead of a dome for the 60 and 85 Hybrid receiver sizes 1 The Custom Sound software suggests a dome type based on the recipient s audiogram NOTE You can use a different dome than sugg...

Page 10: ...ach the Hybrid receiver NOTE This procedure is intended to be performed by clincians only 1 Pull up on the normal earhook to remove it 2 Insert the Cochlear EAC200 Series Screwdriver into the hole in the processing unit plug NOTE Keep the plug in case the recipient later wants to use their sound processor without the Hybrid system 3 Use the screwdriver to carefully remove the plug ...

Page 11: ... Receiver plug with the end of the earhook and carefully slide the plug into the processor 6 Push carefully until it clicks into place Pull gently on the cable to check that it s securely in place 7 Push the dome onto the speaker unit until it clicks securely in place Pull gently on the dome to check that it s securely in place ...

Page 12: ...how the recipient or carer the correct method for putting on and removing their Hybrid system 1 Hold the coil in one hand and place the sound processor on their ear with the other 2 Place the coil on their head 3 Show them how to place the dome in their ear 4 Show them how to remove the dome from their ear when removing their coil and sound processor NOTES Instruct the recipient or carer how to ca...

Page 13: ...system may not stay in place You can use the Cochlear Hybrid Ear Lock to stabilise the speaker unit in the ear 1 Align the ear lock with the speaker unit as shown 2 Push the ear lock onto the speaker unit making sure the speaker unit s tip is exposed 3 Place the dome over the speaker unit s tip 4 Trim the ear lock if it is too long ...

Page 14: ...FESSIONALS GUIDE Remove the Hybrid receiver NOTE This procedure is intended to be performed by clinicians only 1 Fit the Cochlear Hybrid Removal Tool up under the processor with the tool s raised tab in the notch under the earhook ...

Page 15: ...13 NUCLEUS 7 HYBRID MODE PROFESSIONALS GUIDE 2 Firmly press up on the removal tool to push the tab into the notch on the earhook Grip the Hybrid receiver near the earhook and gently pull it out ASSMELBY ...

Page 16: ...rescription choices The Custom Sound software provides three prescriptive methods for programming the Hybrid receiver The ﬁtting formulas are based on adult recipients and are provided to give you a starting point for making ﬁne tuning adjustments to the frequency gain characteristics of the system s acoustic output There is no one ﬁtting method that is universally accepted It is possible to use p...

Page 17: ...te audiogram is entered for the recipient 2 Open the existing Freedom Hybrid CP800 Series or CP900 Series MAP 3 Obtain impedance measurements 4 Select the MAP to convert 4a Select Convert 4b Click on the Acoustics button in the Set Levels screen 4c Ensure the Hybrid MAP checkbox is selected and click the Recalculate button 4d Select the Receiver that is connected to the Nucleus 7 Sound Processor 5...

Page 18: ...ains small parts Make carers aware of the risk of choking Reinforce that carers must take responsibility for the cleaning care and maintenance of the Hybrid system Recipient care tasks Care for domes Domes are disposable They should be checked daily and changed whenever they lose shape look dirty or discoloured or the dome s in built wax ﬁlter is clogged Care for speaker unit wax ﬁlters The speake...

Page 19: ...eiver Check for correct insertion of the speaker unit Check the ﬁt of the dome is still correct as the ear may change with time and weight ﬂuctuations Examine the ear with an otoscope to check for any sore spots inside and around the ear Replace the Hybrid receiver if the cable is broken stretched or twisted Replace the speaker unit wax ﬁlter if it looks dirty or clogged with wax Replace domes whe...

Page 20: ... stocked Have plenty of spare parts especially receivers domes earhooks and wax ﬁlters Nucleus 7 Hybrid Fitting Kit Cochlear EAC200 Series Stetoclip Cleaning set wax loop tissues Replacement ProWax ﬁlters Vent cleaner Cochlear EAC200 Series Screwdriver Troubleshooting procedure 1 Interview the recipient 2 Take an otoscopic examination and ensure there is no wax blockage in the ear canal 3 Inspect ...

Page 21: ...or for repair 2 Perform a listening test using a Cochlear Monitor Earphone Adaptor and earphones If this shows a problem send the sound processor for repair Feedback The Hybrid receiver cable is not the right length 1 Check the Hybrid receiver cable length If it is too long the cable will not sit nicely against the ear and the speaker unit may sit too low in the ear canal If it is too short the do...

Page 22: ...is blocked Check the vent for obstruction Replace the dome if necessary Dome vent is too small Pull the speaker unit slightly out of the ear If this makes the sound quality improve change to a dome with a larger vent size Dome ﬁt is too tight Change to a smaller dome Intermittent contact crackling sound Wax or moisture 1 Wipe the system dry 2 Replace the dome with its built in wax ﬁlter 3 Check th...

Page 23: ... the Hybrid receiver cable on page 22 Wax buildup in the outer ear canal Check for sore spots using an otoscope these are usually caused by wax buildup Refer the patient to a medical practitioner to have their ear canal cleaned Output lower than expected Microphone cover needs changing Change microphone cover Loose Hybrid receiver connection Check the Hybrid receiver connection to the earhook and ...

Page 24: ...r those recipients whose measurements fall between two lengths 1 Remove the sound processor from the ear and heat the Hybrid receiver cable with hot air equipment a few seconds only 130 C max 2 To add length straighten the S curve 3 To stop the Hybrid receiver cable bowing from the side of the ear or to increase the insertion depth adjust the bend into the canal 4 Hold the Hybrid receiver cable in...

Page 25: ...f use Occlusion is less likely to happen with domes PROBLEM POSSIBLE CAUSE TEST RESOLUTION The recipient experiences a boomy sound quality also known as a head in bucket barrel effect Occlusion is caused by a dome blocking the ear with sound ampliﬁed in the ear canal Change to a dome with a larger vent or decrease the low frequency gain for high level sounds The recipient experiences an echo effec...

Page 26: ...s you maintain a well stocked Hybrid Fitting Kit Check the ﬁt of the Hybrid receiver and replace the dome regularly as a recipient s ear shape will change with time If the Hybrid earhook receiver or dome breaks or is lost or damaged you can replace it from your existing stock or order it from Cochlear If an earmould is damaged ﬁt a dome if possible and order a new or replacement earmould The Nucle...

Page 27: ...k prior to adjusting levels to ensure comfort Counsel the recipient on the risks when the volume is pushed too high When programming the Hybrid system perform due diligence to ensure very loud input levels will not be uncomfortable or damaging to the recipient Cautions Counsel the recipient and carer to never allow the speaker unit and coil magnet to touch when handling or storing the system or re...

Page 28: ...iated with the device which are not otherwise found on the label Manufacturer Compatible sound processors Authorised representative in the European Community Catalogue number Serial number Batch code Date of manufacture Temperature limits CE registration mark with notiﬁed body number Radio compliance certiﬁcation for Australia and New Zealand R 202 LSD088 Radio compliance certiﬁcation for Japan Ra...

Page 29: ...part Ingress Protection Rating Protected against access of solid foreign objects greater than or equal to 1 0mm diameter Protected against failure from splashing water Ingress Protection Rating Protected against access of solid foreign objects greater than or equal to 1 0mm diameter Protected against failure from dust penetration Protected against failure from temporary immersion in water ...

Page 30: ...risation to afﬁx the CE mark was granted was 2017 Equipment classiﬁcation The sound processor is internally powered equipment Type B applied part as described in the international standard IEC 60601 1 2005 A1 2012 Medical Electrical Equipment Part 1 General Requirements for Basic Safety and Essential Performance Legal statement The statements made in this guide are believed to be true and correct ...

Page 31: ......

Page 32: ...elen Belgium Tel 32 15 79 55 11 Fax 32 15 79 55 70 Cochlear France S A S 135 Route de Saint Simon 31035 Toulouse France Tel 33 5 34 63 85 85 International or 0805 200 016 National Fax 33 5 34 63 85 80 Cochlear Italia S r l Via Larga 33 40138 Bologna Italy Tel 39 051 601 53 11 Fax 39 051 39 20 62 Cochlear Nordic AB Konstruktionsvägen 14 435 33 Mölnlycke Sweden Tel 46 31 335 14 61 Fax 46 31 335 14 6...

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