Details: Meander Contacts

The use of electrodes in the peripheral nervous system requires mechanical and electrical stability as well as the gentlest possible handling of the nerve. In order to meet these requirements, we have developed a special contact shape for our °AirRay Cuff electrodes.

The cuff electrodes must be flexible enough to be easily placed around the nerve. During the experiment, the electrode must ensure contact with the nerve and sufficiently seal the section of the nerve where it is placed. This should allow measurement signals to be recorded as interference-free as possible and stimulation impulses to be emitted precisely. Furthermore, the electrode must not compress or kink the sensitive nerve excessively, otherwise it can be permanently damaged.

The oblong meandering shape of the contacts of our °AirRay Cuff electrodes is designed to meet these requirements. The contact itself can be stretched and bent up to a certain limit, which is not only helpful for handling the cuff electrode during implantation. The flexibility of the contact also helps to ensure that the metal does not deform or kink the electrode. It retains its predetermined shape and can therefore sit as close as possible to the nerve without damaging it.

Watch the video to learn more about the meander contact shape from CorTec!

 

 

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SPECIFICATIONS

FEATURE 

Recording channels 

Sampling rate 

Sampling dynamic range 

High pass filter cut-off 

Low pass filter cut-off 

Amplifier band pass gain 

Band pass roll-off 

Reference


Stimulation 

Stimulation channels 

Current 

Current source 

Pulse width 

Power supply 

Wireless data transmission 

Closed Loop latency

VALUE

32 

1 kHz 

16 bit (74 nV smallest increment) 

ca. 2 Hz 

325 Hz 

Adjustable: 100-750 

20 dB/dec 

Any (subset) of the recording channels selectable by software or one dedicated hard-wired additional contact 

Current-controlled, biphasic, rectangular, asymmetric stimulus pulses (cathodic amplitude with pulse width followed by an anodic counter pulse of 1/4x amplitude and 4x pulse width) 

 32 

Max. -6 mA / +1.5 mA (24 µA increments) within

 compliance voltage range of -11 V to +5 V 

Can be directed to any of the 32 electrode contacts 

Negative phase: 10 µs – 2,500 µs

Wireless inductive, 120-140 kHz

Bi-directional, radio frequency in 2400-2483.5 MHz band ≤ 40 ms