Devices

A separate 33-contact platinum spiral-cuff prototype, photographed with its contact rows visible. Developed by the ITIS/Ljubljana team and tested on isolated porcine vagus nerve.

Catalog specification sheet - Peripheral nerve

ITIS/Ljubljana 33-contact spiral cuff (2018 research prototype)

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Physical interfacePhotograph
Photograph of the manufactured ITIS 33-contact spiral nerve cuff, showing three contact rows in a transparent rolled sheath, connecting wires and an original 17 millimeter scale bar.

ITIS/Ljubljana’s manufactured 33-contact spiral cuff, with contact rows visible through its sheath. Original 17 mm scale retained.

2018 research prototype for peripheral nerve stimulation. A separate architecture from the CWRU/Ardiem standard four-contact cuff; not a brain-penetrating electrode or an approved commercial product.

Image credit & source

Rozman, Pečlin, Ribarič, Godec and Burja, Scientific Reports (2018), Figure 4 · Scientific Reports · manufactured cuff photograph · CC BY 4.0.

Complete published photograph copied intact, byte for byte, including its original scale bar.

Photograph

ITIS/Ljubljana 33-contact spiral cuff (2018 research prototype)

Photograph of the manufactured ITIS 33-contact spiral nerve cuff, showing three contact rows in a transparent rolled sheath, connecting wires and an original 17 millimeter scale bar.

ITIS/Ljubljana’s manufactured 33-contact spiral cuff, with contact rows visible through its sheath. Original 17 mm scale retained.

Rozman, Pečlin, Ribarič, Godec and Burja, Scientific Reports (2018), Figure 4 · Source · CC BY 4.0 · Complete published photograph copied intact, byte for byte, including its original scale bar.
Record ID
BTSD-PNI-0012
Reviewed
2026-10-10
Interface
pni
Evidence stage
research

Independent, source-linked catalog sheet. Not a manufacturer-issued datasheet, regulatory decision or instructions for clinical use. Human evidence does not establish approval. Source-specific restrictions, conflicts and missing specifications are retained below.

ITIS/Ljubljana 33-contact spiral cuff

This is a distinct prototype from the CWRU/Ardiem self-sizing cuff. The photograph shows manufactured hardware, rather than a rendered model.

Identity

FieldValue and source scope
DeveloperITIS, University of Ljubljana and Institute of Metals and Technology; Rozman et al., 2018
FunctionExtraneural stimulation of peripheral nerve
EvidenceIsolated porcine vagus nerve testing; human use of this photographed prototype not established
Regulatory statusResearch prototype; approval not established

Geometry and architecture

FieldValue and source scope
Contact count33, reported in the abstract and Figure 1
Nominal inner diameter2.5 mm
Cuff length17 mm
Resting turns1.5
Contact dimensions2.5 × 0.7 mm
Circumferential separation0.5 mm
Longitudinal separation2.5 mm
MaterialPlatinum contacts, silicone sheath, insulated stainless-steel leads
PlacementWrapped around a peripheral nerve; does not penetrate brain tissue

Evidence and limitations

The paper reports 33 electrodes, but one Methods sentence describes thirteen groups of three. This unresolved inconsistency prevents a verified contact-layout reconstruction. The publisher correction concerns the title only.

Chronic human performance, impedance, charge-injection limit, recording performance and approved stimulation settings are not established here. The study’s weld-strength tests are not a clinical safety rating.

References