Study of Phantom Limb Pain Suppression Using Neuromodulation Methods

Summary

This study assesses the effectiveness of neuromodulation in alleviating pain through the stimulation of peripheral nerves. The research involves implanting electrodes for test stimulation of peripheral nerves (PNS - Peripheral Nerve Stimulation), spinal cord (SCS - Spinal Cord Stimulation), dorsal root ganglia (DRGS - Dorsal Root Ganglion Stimulation), and motor cortex (MCS - Motor Cortex Stimulation). The study aims to explore the use of neuromodulation for pain relief in patients experiencing pain due to upper or lower limb amputation.

Conditions

• Phantom Limb Pain

Interventions

PROCEDURE

Motor Cortex Stimulation

Motor Cortex Stimulation (MCS) is a neuromodulation technique that involves the surgical implantation of electrodes over the motor cortex, typically targeting the precentral gyrus, to deliver electrical stimulation. The procedure involves placing an electrode grid or strip on the dura mater overlying the motor cortex, which is identified via neuroimaging techniques such as functional MRI or neuronavigation. Once implanted, the electrodes are connected to an implanted pulse generator (IPG), which delivers adjustable electrical impulses.

PROCEDURE

Spinal cord stimulation

Spinal Cord Stimulation (SCS) is a neuromodulation that involves the implantation of a device that delivers electrical impulses to the spinal cord through an electrode placed in the epidural space. The stimulation alters pain signals before they reach the brain, effectively masking or reducing the sensation of pain.

PROCEDURE

Peripheral Nerve Stimulation

Peripheral Nerve Stimulation (PNS) is a neuromodulation technique used to treat chronic pain. The procedure starts with a preoperative assessment, including imaging to identify the target peripheral nerve. Under local anesthesia, a thin, insulated electrode is implanted near the nerve, usually with the help of fluoroscopic or ultrasound guidance for precision.

PROCEDURE

Dorsal Root Ganglion Stimulation

Dorsal Root Ganglion Stimulation (DRGS) is a targeted neuromodulation technique for managing chronic pain. The procedure begins with a thorough preoperative assessment, including imaging to locate the specific dorsal root ganglion (DRG) associated with the pain. Under local anesthesia, a small electrode is implanted near the DRG. This is done through a minimally invasive procedure, often guided by fluoroscopy or CT imaging to ensure precise placement.

Sponsors & Collaborators

• Motorica LLC

  collaborator UNKNOWN

• Federal center of brain research and neurotechnologies

  collaborator UNKNOWN

• Skolkovo Institute of Science and Technology

  lead OTHER

Study Design

Allocation

NON_RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

65 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2024-09-01

Primary Completion

2028-09-01

Completion

2029-05-01

Countries

• Russia

Study Locations