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For Professionals World’s Largest Selection of Electrodes for a
Transcript of For Professionals World’s Largest Selection of Electrodes for a
For Professionals
MED-EL Electrode ArraysDesigned for Atraumatic Implantation Providing Superior Hearing Performance
MED-EL, CoCHLEAr AnD ADvAnCED BIonICS CoCHLEAr IMPLAntS
Electrode Array Comparison
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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
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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.
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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
1 24 platinum electrode contacts optimal spacing over a 20.9mm stimulation range
2 Diameter at apical end: 0.5mm
3 Diameter at basal end: 0.8mm
1 24 platinum electrode contacts optimal spacing over a 12.1mm stimulation range
2 Diameter at apical end: 0.5mm
3 Diameter at basal end: 0.8mm
1 10 platinum electrode contacts optimal spacing over a 4.4mm stimulation range
2 Diameter at apical end: 0.6mm
3 Diameter at basal end: 1.0mm
4 14 platinum electrode contacts optimal spacing over a 6.6mm stimulation range
5 Diameter at apical end: 0.6mm
6 Diameter at basal end: 1.0mm
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
Ø 0.8mmActive Stimulation Range: 23.1mm
FLEX tip 28mm
3
2
1
Ø 0.8mmActive Stimulation Range: 20.9mm
FLEX tip 24mm
3
2
1
Ø 0.8mmActive Stimulation Range: 16.5mm
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
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
Ø 0.8mmActive Stimulation Range: 23.1mm
FLEX tip 28mm
3
2
1
Ø 0.8mmActive Stimulation Range: 20.9mm
FLEX tip 24mm
3
2
1
Ø 0.8mmActive Stimulation Range: 16.5mm
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
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
Ø 0.8mmActive Stimulation Range: 23.1mm
FLEX tip 28mm
3
2
1
Ø 0.8mmActive Stimulation Range: 20.9mm
FLEX tip 24mm
3
2
1
Ø 0.8mmActive Stimulation Range: 16.5mm
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
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
Ø 0.8mmActive Stimulation Range: 23.1mm
FLEX tip 28mm
3
2
1
Ø 0.8mmActive Stimulation Range: 20.9mm
FLEX tip 24mm
3
2
1
Ø 0.8mmActive Stimulation Range: 16.5mm
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
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
1 19 platinum electrode contacts optimal spacing over a 23.1mm stimulation range
2 FLEX tip for minimal insertion trauma Diameter at apical end: 0.5 x 0.4mm
3 Diameter at basal end: 0.8mm
1 19 platinum electrode contacts optimal spacing over a 20.9mm stimulation range
2 FLEX tip for minimal insertion trauma Diameter at apical end: 0.5 x 0.3mm
3 Diameter at basal end: 0.8mm
NEW
NEW
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
Ø 0.8mmActive Stimulation Range: 23.1mm
FLEX tip 28mm
3
2
1
Ø 0.8mmActive Stimulation Range: 20.9mm
FLEX tip 24mm
3
2
1
Ø 0.8mmActive Stimulation Range: 16.5mm
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
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
Ø 0.8mmActive Stimulation Range: 23.1mm
FLEX tip 28mm
3
2
1
Ø 0.8mmActive Stimulation Range: 20.9mm
FLEX tip 24mm
3
2
1
Ø 0.8mmActive Stimulation Range: 16.5mm
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
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
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