CI Comparison      
  Advanced Bionics HiResolution Bionic Ear System (http://www.bionicear.com/) Cochlear Corp Nucleus 3G  w/N22, N24, &N24C(for comparison)*** REPLACED BY FREEDOM MED-EL COMBI 40+ ***REPLACED BY PULSAR Cochlear Corp Nucleus Freedom  Cochlear Implant System (http://www.cochlearamericas.com/) MED-EL PULSAR CI100 * (http://www.medel.com/ENG/US/)
Feature          
           
# electrodes  16 (+ 2 grounding) Nucleus 22: 20 (+ 2 grounding); Nucleus 24 & 24C: 22 +( 2 grounding) 24 22 (+2 grounding) 24
# output circuits (current sources) * 16 1 2 1 24
Sound sampling rate (audio shutter speed in sound frames/second)* 17.4 kHz 400/sec (Hz)   16.0 kHz  
Sound Processing rate max (from processor to internal implant) 90,000 pps   18,182   See MED-EL website for updates
Stimulation rate max (from internal implant to auditory nerve)(in PulsesPerSecond PPS) 83,000 14,400 18,182 32000 See MED-EL website for updates - 51,000 claimed
# Spectral Bands used for each sound frame 16 Nucleus 24: 8 - 12 ; Nucleus 22: 8 - 12 12 8 - 12 12 (Combi40+ mode)
# Spectral Band "palette" (# pitches available) 120 - available for adults, FDA approval pending for children Nucleus 24: 22 ; Nucleus 22: 20 12 22 12 (Combi40+ mode)
"Special electrode" configuration Self-curling (Helix); lateral wall (1j) yes; "self-curling array" and Double Array for ossified cochleas yes - split array, compressed and medium yes - Contour Advance Electrode (self curling) and Double Array for ossified cochleas yes - split array, compressed and medium
Input Dynamic Range (IDR) (sound window) Auria/PSP (HiRes) - 82. Harmony/PSP (body-worn) - 96 with Harmony HiRes120    75 dB with Automatically Adaptive Sound Window 80 (45db at any time, Whisper shifts sound window lower)  75 dB with Automatically Adaptive Sound Window
# programs (MAPs) 3 BTE and BWP 2 Up to 9 4 Up to 9
Speech Coding Strategies * 6 HiRes-S, HiRes-P, CIS, SAS, MPS, HiRes 120 S, HiRes120 P Nucleus 24: SPEAK, ACE, CIS ; Nucleus 22: SPEAK CIS+, (CIS and n-of-m in BWP) 5 ACE, Hi-ACE, SPEAK, CIS, Hi-CIS See MED-EL website for updates
telemetry yes - full forward and backward up to 1mbps yes yes (electrode impedances, ground path impedance, & voltages) yes - full forward and backward yes (electrode impedances, ground path impedance, & voltages)
Telecoil Yes (Auria BTE- snap-on (external), Harmony BTE built-in) Yes Yes Yes - Freedom (built-in) Yes
T-mic Yes (mic is located at the opening of the ear canal) no no no no
Battery type custom rechargeable for Auria/Harmony and PSP. PSP - AA battery pack. zinc-air 675 HP zinc-air, rechargeable AA, disposable AA disposable zinc-air or custom rechargeable for BTE; BWP 2 AAA 675 HP zinc-air, rechargeable AA, disposable AA
Battery life Auria: 9 hours (PowerCelSlim); 17 PowerCellPlus; Harmony - PowerCelSlim(14 hrs) PowerCelPlus (24hours). PSP (11-14 hrs). Battery life 1 - 3 years 3-5 days, then discarded. Sprint can use rechargeable AA batteries. 3-5 days(675 HP), then discarded. Disposables: up to 5 days, (average 54 hours). Rechargeables: up to 3 days  Comes with 2 rechargeables and speed charger) BWP - 7 - 10 days 3 - 5 days (675 HP)
MRI Yes (0.3 & 1.5Tesla) magnet must be removed   Yes (0.2Tesla) yes -1.5 Tesla, removable magnet yes (0.2Tesla)
Status Indicator (headpiece off) yes - beep and light (PSP). Auria -Firefly earhook steady illumination, Harmony LED blinks red     yes - light and built-in LED displays help messages. Indicator light can be set to flash constantly ("good function") or only when problem condition (ie, battery dies). BWP emits 4 short beeps if coil falls off.  
Low battery indicator yes - beep and light (PSP); Auria Firefly not illuminated; Harmony LED blinks amber  beep to user Yes- light yes - light an internal beep to user. Indicator light can be set to flash constantly ("good function") or only when problem condition (ie, battery dies) yes-light
Water-resistant (Note: None of the devices are warranted if the device is immersed in water) Designed to withstand sweat, rain, humidity, splashes and warranted against water damage excluding immersion   Use of Activity Cover offers protection from moisture, perspiration, and impact. Tested to the International Standard of Water Protection: IEC 60529 certified IP44 - "splashing water" Use of Activity Cover offers protection from moisture, perspiration, and impact.
"quiet/noisy conditions" Auto gain control; sensitivity setting; full clinician adjustable IDR, T-mic for improved directionality Whisper setting, "ADRO"/wSprint * Sensitivity setting; Dual-loop Automatic Gain Control; Automatically Adaptive Sound Window Whisper, "ADRO" ; Noisy environments: Beam, Auto-sensitivity options Sensitivity setting; Dual-loop Automatic Gain Control; Automatically Adaptive Sound Window
"No-swap" processor (for bilaterals, schools or households w/multiple users) Yes - IntelliLink (serial number)     "Left" / "Right" indicators in LED See MED-EL website for updates
Reliability (Company Reported - numbers are Cumulative Survival Rates (CSR)) (Currently available devices only) 99.9% CSR at 18 months for currently implanted devices     99.9% since release in 2005 99.52% since release in 2004
FM Connection Auria/Harmony - wireless (iConnect), w/PhonakMLxS receiver. Uses Size 10 battery (lasts 20-30 hrs), doesn't drain processor battery. PSP access w/auxiliary jack 3G for N22 & N24: wireless with MLXs from Phonak Tempo+ - wired Built-in FM with Microlink Freedom  
In business since 1993 1984 1989 1984 1989
No Foolin' Cool Stuff Auria - Firefly ear hook - light shows system locked and battery charged. With BWP, nothing hooked to ear. Kids get a stuffed monkey with a CI after surgery. Earbud-compatible with T-Mic.  You can buy a refurbished BWP processor and go swimming with it. The BabyBTE is really tiny, and clips right to the clothes. Built-in status light with 4 different light conditions for trouble shooting. Sound Guard for ESD protection. SmartSound Technology - 4 technologies to optimize hearing in a viriety of listening environnments (quiet vs noisy). BTE can use disposable/rechargeable batteries interchangeably. Sound processor upgrades available to all previous generations. Kids get a stuffed koala w/CI. The BabyBTE is really tiny, and clips right to the clothes. Built-in status light with 4 different light conditions for trouble shooting. Sound Guard for ESD protection. Kids get a stuffed cuddly bunny w/CI.
Company Mascot Bionic Buddy - stuffed monkey     Kaci - Koala Toy - stuffed Koala Meddy - a cuddly bunny
* You have to go to the company web sites to get an explanation of this stuff! * Further regulatory clearance is required for future feature implementation with the PULSAR implant.  Until that time, it will function in "C40+ mode."
Last updated: March 26, 2007
Note: This information has been reviewed by representatives of Advanced Bionics, Cochlear Corp and MED-EL.