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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT06205160
Other study ID # CIP-01202
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date April 2024
Est. completion date July 2025

Study information

Verified date January 2024
Source Neurosoft Bioelectronics SA
Contact Karolina Janikowska Clinical Affairs Manager, PhD
Phone 800-555-5555
Email karolina.janikowska@neurosoft-bio.com
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The objective of this prospective interventional monocentric clinical investigation is to evaluate the feasibility and performance of the flexible high-density SOFT ECoG electrode grids, manufactured by Neurosoft Bioelectronics SA (test device; TD), in comparison to regular high-density electrode grids (ADTech, CE-marked) (control device; CD) routinely used at the investigation site during epilepsy surgery. Subjects will undergo ≥ 2 additional intracranial recordings pre- and post-resection with the TD next to the standard recordings with the CD during ECoG-tailored epilepsy surgery.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 12
Est. completion date July 2025
Est. primary completion date April 2025
Accepts healthy volunteers No
Gender All
Age group 16 Years to 75 Years
Eligibility Inclusion Criteria: - Age =16 years at the time of enrolment - Lesional epilepsy (incl. mesial temporal sclerosis) that is considered a candidate for intra-operative high-density grid recordings (incl. patients who underwent stereoelectroencephalography (SEEG) preceding resective surgery) - Provided informed consent for study participation by the subject Exclusion Criteria: - Prior brain surgery (excl. SEEG) - Occipital lesion - Multiple epileptic foci or suspected dual pathology - Surgeries involving a disconnection, or hemispherectomy. - Planned awake surgery and/or functional recordings - Use of anticoagulants that cannot be discontinued during the perioperative period, or a factor XIII deficiency or any other haematological disease - Active participation in another investigational device study - Any other condition that in the opinion of the investigator may adversely affect the safety of the subject or would limit the subject's ability to complete the study. - Insufficient understanding of Dutch language.

Study Design


Intervention

Device:
SOFT ECoG subdural grid electrode
Test Device (SOFT ECoG subdural grid electrode): used for recording. During epilepsy surgery, in addition to standard clinical protocol (recording with comparator device), subjects will undergo = 2 additional intracranial recordings with the SOFT ECoG flexible high density electrode grid (TD). Recording will be registered pre- and post-resection. All procedures will be conducted according to standard clinical practice. Any medical decision making will be done using the standard of care CE-marked device (CD). The investigational, non-CE marked device is not used for clinical decision making.

Locations

Country Name City State
Netherlands University Medical Center (UMC) Utrecht Utrecht

Sponsors (3)

Lead Sponsor Collaborator
Neurosoft Bioelectronics SA European Research Council, UMC Utrecht

Country where clinical trial is conducted

Netherlands, 

Outcome

Type Measure Description Time frame Safety issue
Primary Background SNR pre-resection recording Performance in terms of signal quality is assessed via background signal to noise ratio (SNR). Only channels which record properly based on visual inspection (no noise, no flat line) will be included in the background SNR calculation. For the pre-resection recordings (SITUATION I/I*), the background SNR per (included) channel and the average SNR for the electrode grid will be calculated, and pairwise comparison will be conducted between TD (SITUATION I*) and CD (SITUATION I). up to 24 hours
Secondary Electrode deficiency ratio (%) The individual electrodes will be classified, per recording, as poor or good signal quality based on visual criteria (i.e., noise, flat signal due to overlap with resection cavity or silicone of secondary electrode strip, pulsation artifacts). As a result, an electrode deficiency ratio (%) will be calculated as follows: # bad electrodes divided by the total # of electrodes per recording. This will be determined for the similar positioned CD recording (SITUATION I/II) to allow comparison with the TD (SITUATION I*/I**). up to 24 hours
Secondary Epileptic biomarker identification ( eg. number of spikes/HFOs per min, event SNR) After the surgery, spikes and high frequency oscilations (HFOs) will be visually marked in the final minute of the recording (note: assisted by automated spike/HFO detector) and checked by an expert. Marking of spikes and HFOs will be done in the TD and the corresponding CD recordings pre- and post-resection. Event rates (number of spikes/HFOs per minute) per channel and total per recording will be compared between the TD and CD. The average event SNR per channel and the average SNR per epileptogenic event type will be calculated per recording. The event SNR will be compared between the CD recording (SITUATION I/II) and the TD (SITUATION I*/I**). up to 24 hours
Secondary Background SNR of post-resection recordings The background SNR for post-resection recordings (SITUATION II/II**) will be computed and pairwise compared. Note that it shall be considered that for the post-resection recordings (SITUATION II/II**), in particular when measuring near/in the resection cavity, the performance of both the TD and CD for electrode deficiencies might differ significantly, positively and negatively. up to 24 hours
Secondary Surgical complications (e.g. SAEs/SADEs) The safety analysis will include surgical complications in terms of device deficiencies (DDs) and serious adverse events (SAEs), and whether these are device related (SADEs). up to hospital discharge, on average at 10 days
Secondary Usability evaluation A (digital) usability questionnaire (system usability scale + open questions) will be collected (within 48h after surgery). up to 48 hours
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