Xavier Electromyographic Wheelchair Control for Limited Mobility Patients

Study Purpose:

The purpose of this study is to assess the functional mobility and self-reported satisfaction with the Xavier electromyography hands-free wheelchair control system in comparison with a standard joystick.

Study Status:

Not recruiting


Amyotrophic Lateral Sclerosis

Study Type:


Type of Intervention:


Intervention Name:

Xavier wheelchair controller




Study Chair(s)/Principal Investigator(s):

Bjorn Oskarsson, MD, Mayo Clinic

Clinicaltrials.gov ID:


Neals Affiliated?


Coordinating Center Contact Information

Study Sponsor:

Mayo Clinic

Estimated Enrollment:


Estimated Study Start Date:

01 / 11 / 2019

Estimated Study Completion Date:

10 / 30 / 2019

Posting Last Modified Date:

03 / 16 / 2021

Date Study Added to neals.org:

03 / 16 / 2021

Minimum Age:

18 Years

Maximum Age:

89 Years

Inclusion Criteria:

- ALS diagnosis by revised el Escorial criteria (definite, probable or probable laboratory supported)

- Age 18-89

- Limited mobility with use of motorized wheelchair at screening-time

- Impairment of hand function limiting the use of a standard joystick control

- Caregiver willing to assist with transfers into wheelchair and application of controllers

- Ability to attend study visits with a motorized wheelchair

- Ability to communicate and answer patient reported outcome measure questions

Exclusion Criteria:

- Cognitive impairment prohibiting safe independent mobility as defined by an ALS-Cognitive Behavioral Screen (ALS-CBS) score of <10 or the opinion of the investigator

- A sensory impairment prohibiting safe independent mobility in the opinion of the investigator

- Allergy to adhesives or electrode gels (required for EMG electrodes)

- Skin breakdown over the temporalis muscle that would predispose to further breakdown and/or infection with electrodes

- Severe loss of facial muscle functionality or control that would preclude EMG electrode efficacy

- Subjects who do not have the capacity to consent

Mayo Clinic in Florida

Jacksonville, Florida 32224
United States