Nerve Cuff Electrodes

d Inner diameter, n Number of contacts, x Spacing between contacts, y Distance from the end of the contacts to the end of the cuff, s Teflon insulated stranded Stainless Steel lead

Standard (1.0 - 5.0 mm i.d.)
Contact material & thickness	d=inner diameter (i.d.)
* Recommended for stimulation
125 µm stranded Stainless Steel	1.0 - 5.0 mm
100 µm Platinum	1.0 - 2.0 mm
* 250 µm Platinum	2.0 - 5.0 mm

Microcuffs (0.75, 0.5 and 0.3 mm i.d.)
Contact material & thickness	d=inner diameter (i.d.)
100 µm Platinum	0.5 & 0.75 mm
50 µm Platinum/Iridium	0.3 mm

Nanocuffs (56 - 250 µm i.d.)
Contact material & thickness	d=inner diameter (i.d.)
25 µm Platinum/Iridium	160 - 250 µm
12.5 µm Platinum/Iridium	56 - 140 µm

The concentric nerve cuff features rings of multiple independently-addressable contacts spaced evenly around the cuff, and allows for recording or stimulation at different locations around the nerve, to assist in targeting individual fascicles or avoiding vasculature.

The number of contacts allowed per ring is a function of the inner diameter of the cuff.

Number of contacts per ring
Cuff I.D.	Maximum # of contacts
1.5 mm	8 (50 µm wire)
1.0 mm	6 (50 µm wire)
0.75 mm	5 (50 µm wire)
0.5 mm	4 (50 µm wire)
0.3 mm	3 (25 µm wire only)

Multiple contacts at a single section of the nerve, allowing recording or stimulation at different locations circumferentially.

d Inner diameter, n Number of contacts, w Number of contacts inside a ring (2-8), x Spacing between contacts, y Distance from the end of the ring to the end of the cuff, s Teflon insulated stranded Stailess Steel lead

Standard (1.0 - 5.0 mm i.d.)
Contact material & thickness	d=inner diameter (i.d.)
* Recommended for stimulation
125 µm stranded Stainless Steel	1.0 - 5.0 mm
100 µm Platinum	1.0 - 2.0 mm
* 250 µm Platinum	2.0 - 5.0 mm

Microcuffs (0.75, 0.5 and 0.3 mm i.d.)
Contact material & thickness	d=inner diameter (i.d.)
100 µm Platinum	0.5 & 0.75 mm
50 µm Platinum/Iridium	0.3 mm

Nanocuffs (56 - 250 µm i.d.)
Contact material & thickness	d=inner diameter (i.d.)
25 µm Platinum/Iridium	160 - 250 µm
12.5 µm Platinum/Iridium	56 - 140 µm

Our X-Wide Contact Nerve Cuffs have extra-wide, high-quality platinum-iridium ribbon contacts that come in two sizes: 500 µm and 1.25 mm. These contacts offer a much larger surface area compared to standard ones. These large contacts allow the X-Wide Contact cuffs to deliver greater stimulation currents at safer voltage levels, and typically provide much lower functional thresholds. This feature makes these cuffs suitable for high-intensity stimulation applications such as high frequency nerve blocking.

The reduced contact impedances are ideal for ensuring that the output of the stimulation source is not attenuated, and that potentially harmful effects such as charge buildup are more easily avoided.

SUGGESTED NERVE CUFF DIAMETER (RAT)
Nerve	Nerve diameter (mm)	Cuff diameter (mm)
Sciatic	1.9	2.50
Tibial	1.2	1.5
Cervical Vagus	0.5	0.75
Sympathetic Chain	1.43	2
Subdiaphragmatic Vagus	0.3	0.5

The X-wide surface area cuffs are ideal for studies using kilohertz electrical stimulation to achieve block of activity in peripheral nerves.

d Inner diameter, n Number of contacts, x Spacing between contacts, W Width of contact, W = 0.5 or 1.25 mm (Pt/Ir 90/10), y Distance from the end of the contacts to the end of the cuff, s Teflon insulated stranded Stailess Steel lead