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Clinical Trial Summary

This project will evaluate the feasibility of using a fully implanted gluteal stimulation system for the prevention of Pressure ulcers. The specific goal of this study will be a pilot clinical trial of veterans with reduced mobility in order to establish clinical efficacy of a 2-channel bilateral gluteal stimulation system. A two-arm crossover study of wheelchair users with complete SCI will be carried out. All study participants will receive a fully implanted system incorporating implanted IM electrodes and a Micropulse I IPG stimulator (NDI Medical). Group assignments will be determined at enrollment using a modified randomization scheme. A total of 10 subjects will be recruited to the pilot clinical trial.


Clinical Trial Description

Within the scope of the study the aims will be to: (1. Develop the pre-implantation assessment protocol utilizing targeted CT to locate optimal gluteal motor points bilaterally.) CT assessment of the pelvic region in spinal cord injured subjects will be carried out to determine regional vascular and nervous anatomy. This will allow us to achieve optimal electrode placement using a minimally invasive implantation procedure. (2. Develop the implanted gluteal stimulation system.) The fully implanted gluteal stimulation (GSTIM) system is envisioned as a marriage between the established technology of the implanted IM electrodes developed by the Cleveland FES Center and the newly developed Micropulse I 2-channel stimulator. The Micropulse I IPG is a small, rechargeable stimulator developed by NDI Medical as a platform technology for neuromodulation and neurostimulation applications. The device will be customized in order to provide two synchronized channels of stimulation for the GSTIM system. (3. Implement and evaluate implanted gluteal stimulation system in human volunteers.) A pilot clinical trial of the fully implanted gluteal stimulation system will be carried out using a two-arm crossover study of ten wheelchair users at risk for pressure ulcer development due to impaired mobility. Pre-defined selection criteria will be employed to screen potential participants physically and psychologically. All participants will receive a stimulation system consisting of implanted IM electrodes inserted bilaterally in the gluteus maximus together with the Micropulse I stimulator implanted subcutaneously in the lower abdomen. Tissue health will be assessed at three month intervals during the 12-month period following implantation. The clinical application of this system is of great relevance to the veteran population at risk of pressure ulcer development. The project will add value to the continued improvement in health care provision for veterans, allowing them to benefit from the most recent advances in medical device technology. Although the initial target user group is veterans with SCI, the proposes system will have applications to other patient populations at risk due to reduced mobility, such as those with multiple sclerosis and the elderly. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Prevention


Related Conditions & MeSH terms


NCT number NCT00623948
Study type Interventional
Source VA Office of Research and Development
Contact
Status Withdrawn
Phase N/A
Start date September 2012
Completion date August 2014

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