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English
Specifi cation and characteristics for each lead and electrode array
• The implant has 24 independent current sources stimulating 12 independent elec‑
trode channels in monopolar mode.
• The electrode is made of medical grade silicone, platinum (electrode contacts) and
platinum/iridium (90/10) wires and PEEK.
• All electrode variants have a straight design. The electrode does not deliver any
medicinal substances.
• Geometric surface area of the stimulation reference electrode = 50 mm².
• Physical dimensions of the electrodes:
Electrode type Length
of the
electrode
lead *
Cross-sectional dimen-
sions of the electrode
array
Geometric surface
area per channel
Distance
at proximal
end of array *
at distal end
of array *
of smallest
stimulating
electrode
contact **
of largest
stimulating
electrode
contact **
between
contacts *
between
most proxi‑
mal and
most distal
contact *
Standard
111.2
1.3 × 1.3
0.5 × 0.5
0.14
0.14
2.4
26.4
Medium
111.2
0.8 × 0.8
0.5 × 0.5
0.14
0.14
1.9
20.9
Compressed
111.2
0.7 × 0.7
0.5 × 0.5
0.14
0.14
1.1
12.1
FLEX
SOFT
110.9
1.3 × 1.3
0.5 × 0.4
0.13
0.14
2.4
26.4
FLEX
28
108.2
0.8 × 0.8
0.5 × 0.4
0.13
0.14
2.1
23.1
FLEX
26
105.2
0.8 × 0.8
0.5 × 0.3
0.13
0.14
1.9
20.9
FLEX
24
104.2
0.8 × 0.8
0.5 × 0.3
0.13
0.14
1.9
20.9
FLEX
20
99.7
0.8 × 0.8
0.5 × 0.3
0.13
0.14
1.4
15.4
FORM
24
102.7
0.8 × 0.8
0.5 × 0.5
0.14
0.14
1.7
18.7
FORM
19
97.7
0.8 × 0.8
0.5 × 0.5
0.14
0.14
1.3
14.3
* typical value, mm
** typical value, mm²
The implant does not have any connector.
Some implant electrode types mentioned in these Instructions for Use may not be
released for distribution in all markets. Please contact your local MED‑EL representative
for information on current product availability in your country.
Intended use
The MED‑EL Cochlear Implant System is intended to evoke auditory sensations via elec‑
trical stimulation of the auditory pathways for severely to profoundly hearing impaired
individuals who obtain little or no benefi t from acoustic amplifi cation in the best aided
condition.
