For Professionals World’s Largest Selection of Electrodes ... · World’s Largest Selection of...

For Professionals

MED-EL Electrode ArraysDesigned for Atraumatic Implantation Providing Superior Hearing Performance

MED-EL, CoCHLEAr AnD ADvAnCED BIonICS CoCHLEAr IMPLAntS

Electrode Array Comparison

2276

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.0

MED-EL Standard24 electrode contacts along 26.4 mm 2.4 mm spacing between contacts

MED-EL FLEX28

19 electrode contacts along 23.1 mm 2.4 mm spacing between contacts

MED-EL FLEX24

19 electrode contacts along 20.9 mm 1.9 mm spacing between contacts

MED-EL Medium24 electrode contacts along 20.9 mm 1.9 mm spacing between contacts

MED-EL Compressed24 electrode contacts along 12.1 mm 1.1 mm spacing between contacts

Cochlear22 electrode contacts along 20 mm less than 1 mm spacing between contacts Source: nucleus® Cochlear Implant (CI422) technical Specifications

Advanced Bionics16 electrode contacts along 17 mm 1.1 mm spacing between contacts Source: HiFocus® 1j Electrode Specifications

Cochleae may differ significantly in size and shape

from one another as can individual cochlear duct

lengths. MED-EL offers the largest selection of

electrode arrays. Each implant recipient can be

sure to receive the best possible electrode array

for their unique hearing loss needs.

Complete Cochlear Coverage (CCC)

Complete Cochlear Coverage means stimulating the

cochlea from the base to the apical region in order

to stimulate a maximum number of nerve fibers.

Stimulation of the entire frequency range with a

deeply inserted, long array provides the implant

user with the best possible outcomes in speech

performance measures and in sound quality.

medel.com

0.2

0.15

0.1

0.05

0

-0.05

-0.1

25 26 27 28 29 30 31 32 33 34 35 36

CDL (mm)

Dis

trib

utio

n of

CD

L

N=95

MIN MAX

World’s Largest Selection of Electrodes for a variety of Cochlear Duct Lengths (CDLs) 1,2

“... thin and flexible free-fitting electrodes demonstrated to best fulfill all criteria for atraumatic CI surgery.” 6

Bell curve of the distribution of cochlear duct lengths.

144677_1.indd 1-3 5/31/12 8:15 AM

1. The length of the organ of Corti in man, Hardy M, American Journal of Anatomy, 62(2), 1938, p. 179-311

2. Depth of Electrode Insertion and Postoperative Performance in Humans with Cochlear Implants: A Histopathologic Study, Lee J;nadol JB;Eddington DK, Audiol neurootol, 15(5), 2010 Mar 4, p. 323-331

3. Partial Deafness Cochlear Implantation at the University of Kansas: Techniques and Outcomes, Prentiss S;Sykes K; Staecker H, J Am Acad Audiol, 21(3), 2010 Mar, p. 197-203

4. Achievement of hearing preservation in the presence of an electrode covering the residual hearing region, Usami SI; Moteki H;Suzuki n;Fukuoka H;Miyagawa M;nishio SY;takumi Y; Iwasaki S;Jolly C, Acta otolaryngol, 2011 Jan 5

5. Atraumatic round window deep insertion of cochlear electrodes, Skarzynski H;Lorens A;Zgoda M;Piotrowska A;Skarzynski, PH;Szkielkowska A, Acta otolaryngol, 2011 Apr 15

6. Hearing Preservation After Complete Cochlear Coverage in Cochlear Implantation With the Free-Fitting FLEXSOFT Electrode Carrier, Helbig S;Baumann U;Hey C;Helbig M, otol neurotol, 2011 Jul 1

OPTIMAL NUMBER OF CONTACTSAchieving optimal balance between the number of contacts and the appropriate distance between them increases flexibility and limits channel interactions.

WAVE-SHAPED WIRESWavy instead of straight, the wires of the electrode array are particularly soft and flexible.

FLEX TIP TECHNOLOGYthe FLEX tip of the electrode array is designed for atraumatic insertion and protection of the delicate neural structures of the cochlea.

A 31mm electrode array designed for long cochlear duct lengths.

A 24mm electrode array designed for cases where deep insertion is not desired or is not possible due to anatomic restrictions.

A 15mm electrode array designed for partial ossification or malformation of the cochlea.

Double branch electrode array designed for severe ossification of the cochlea.

Standard

Medium

Compressed

Split

1 24 platinum electrode contacts optimal spacing over a 26.4mm stimulation range

2 Diameter at apical end: 0.5mm

3 Diameter at basal end: 1.3mm













FLEX24

FLEX20

FLEX28

FLEXSOFT

Ø 1.3mmActive Stimulation Range: 26.4mm

FLEX tip 31.5mm

3

2

1

Ø 1.3mm

Ø 0.5mm

Ø 0.8mm

Active Stimulation Range (ASR): 26.4mm

31.5mm

3

Ø 0.4mm

Ø 0.4mm

Ø 0.3mm

Ø 0.3mm

3

Ø 0.7mm

3

24mm

15mm

7.4mm

1

2

Ø 0.5mm 2

Ø 0.5mm 2


FLEX tip 28mm

3

2

1


FLEX tip 24mm

3

2

1


FLEX tip 20mm

3

2

1

Active Stimulation Range (ASR): 20.9mm1

ASR: 12.1mm1

Ø 1.0mm

Ø 1.0mm

3ASR: 4.4mm1

9.6mm

6ASR: 6.6mm4

Ø 0.6mm5

Ø 0.6mm2

Standard Electrode array

Medium Electrode array

Compressed Electrode array

Split Electrode arrays

FLEX24

FLEX20

FLEX28

FLEXSOFT


FLEX tip 31.5mm

3

2

1

Ø 1.3mm

Ø 0.5mm

Ø 0.8mm


31.5mm

3

Ø 0.4mm

Ø 0.4mm

Ø 0.3mm

Ø 0.3mm

3

Ø 0.7mm

3

24mm

15mm

7.4mm

1

2

Ø 0.5mm 2

Ø 0.5mm 2


FLEX tip 28mm

3

2

1


FLEX tip 24mm

3

2

1


FLEX tip 20mm

3

2

1


ASR: 12.1mm1

Ø 1.0mm

Ø 1.0mm

3ASR: 4.4mm1

9.6mm

6ASR: 6.6mm4

Ø 0.6mm5

Ø 0.6mm2





FLEX24

FLEX20

FLEX28

FLEXSOFT


FLEX tip 31.5mm

3

2

1

Ø 1.3mm

Ø 0.5mm

Ø 0.8mm


31.5mm

3

Ø 0.4mm

Ø 0.4mm

Ø 0.3mm

Ø 0.3mm

3

Ø 0.7mm

3

24mm

15mm

7.4mm

1

2

Ø 0.5mm 2

Ø 0.5mm 2


FLEX tip 28mm

3

2

1


FLEX tip 24mm

3

2

1


FLEX tip 20mm

3

2

1


ASR: 12.1mm1

Ø 1.0mm

Ø 1.0mm

3ASR: 4.4mm1

9.6mm

6ASR: 6.6mm4

Ø 0.6mm5

Ø 0.6mm2





FLEX24

FLEX20

FLEX28

FLEXSOFT


FLEX tip 31.5mm

3

2

1

Ø 1.3mm

Ø 0.5mm

Ø 0.8mm


31.5mm

3

Ø 0.4mm

Ø 0.4mm

Ø 0.3mm

Ø 0.3mm

3

Ø 0.7mm

3

24mm

15mm

7.4mm

1

2

Ø 0.5mm 2

Ø 0.5mm 2


FLEX tip 28mm

3

2

1


FLEX tip 24mm

3

2

1


FLEX tip 20mm

3

2

1


ASR: 12.1mm1

Ø 1.0mm

Ø 1.0mm

3ASR: 4.4mm1

9.6mm

6ASR: 6.6mm4

Ø 0.6mm5

Ø 0.6mm2





A 28mm electrode array suitable for most normal cochlear anatomies featuring FLEX tip technology. optimized for insertion into the apical region (CCC).

A 24mm electrode array featuring FLEX tip technology and designed for insertion depths of less than 1.5 turns or where a deeper insertion is not desired.

FLEX 28

FLEX 24


2 FLEX tip for minimal insertion trauma Diameter at apical end: 0.5 x 0.4mm



2 FLEX tip for minimal insertion trauma Diameter at apical end: 0.5 x 0.3mm


NEW

NEW

FLEX24

FLEX20

FLEX28

FLEXSOFT


FLEX tip 31.5mm

3

2

1

Ø 1.3mm

Ø 0.5mm

Ø 0.8mm


31.5mm

3

Ø 0.4mm

Ø 0.4mm

Ø 0.3mm

Ø 0.3mm

3

Ø 0.7mm

3

24mm

15mm

7.4mm

1

2

Ø 0.5mm 2

Ø 0.5mm 2


FLEX tip 28mm

3

2

1


FLEX tip 24mm

3

2

1


FLEX tip 20mm

3

2

1


ASR: 12.1mm1

Ø 1.0mm

Ø 1.0mm

3ASR: 4.4mm1

9.6mm

6ASR: 6.6mm4

Ø 0.6mm5

Ø 0.6mm2





FLEX24

FLEX20

FLEX28

FLEXSOFT


FLEX tip 31.5mm

3

2

1

Ø 1.3mm

Ø 0.5mm

Ø 0.8mm


31.5mm

3

Ø 0.4mm

Ø 0.4mm

Ø 0.3mm

Ø 0.3mm

3

Ø 0.7mm

3

24mm

15mm

7.4mm

1

2

Ø 0.5mm 2

Ø 0.5mm 2


FLEX tip 28mm

3

2

1


FLEX tip 24mm

3

2

1


FLEX tip 20mm

3

2

1


ASR: 12.1mm1

Ø 1.0mm

Ø 1.0mm

3ASR: 4.4mm1

9.6mm

6ASR: 6.6mm4

Ø 0.6mm5

Ø 0.6mm2





MED-EL is the leader in providing soft, flexible

electrode arrays which ensure maximum protection

of the delicate structures in the cochlea. Preserving

residual hearing may be important for enabling users

to benefit from future technologies and therapies

Wave-Shaped Wires

the electrode arrays feature ultraflexible wave-shaped

platinum-iridium wires. this wire design is the key to

making a MED-EL electrode array the world’s most

flexible and atraumatic. Minimizing trauma during

electrode insertion maximizes the benefit to the patient.

Wave-shaped wires significantly reduce rigidity in

comparison to a straight-wire design. Benefits include

preserving the integrity of intraneural tissue targeted

for electrical stimulation.

Optimal Number of Contacts

MED-EL electrode design philosophy dictates a careful

balance between the maximum number of electrode

contacts and the reduction of channel interaction,

a factor which negatively impacts performance.

Each electrode array contains the optimal number

of contacts for stimulation of nerve fibers leading to

best performance. optimal number and spacing of

electrode contacts also significantly reduces rigidity;

allowing for gentle insertion without damaging the

delicate cochlear structures.

FLEX Tip Technology

the unique FLEX tip features single electrode contacts

on the leading end to further increase mechanical

flexibility. Softness and flexibility allow insertion into

the apical region.

MED-EL Electrode Arrays

Designed for Atraumatic ImplantationProviding Superior Hearing Performance 3,4,5

the Split Electode Array is coupled exclusively to the PULSAr hearing implant.

rEFErEnCES

144677_1.indd 4-6 5/31/12 8:15 AM

For Professionals World’s Largest Selection of Electrodes ... · World’s Largest Selection of...

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