Assessment of Gesture Accuracy of a Prosthesis Control System

Assessment of Gesture Accuracy for a Multi-electrode EMG Sensor Array Based Prosthesis Control System

Status

Completed

Phases

Early Phase 1

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT06446037

Acronym

ASCENT

Enrollment

Registered

2024-06-06

Start date

2024-08-13

Completion date

2025-04-18

Last updated

2025-06-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Upper Limb Amputation Below Elbow (Injury)

Keywords

Prosthesis, Upper limb amputee

Brief summary

The study is evaluating the performance of prosthesis control system, referred to as Phantom X, in able bodied individuals and individuals with upper limb amputation at the forearm level.

Detailed description

The study will characterize the performance of Phantom X system and associated algorithms in decoding EMG signals for various hand gesture control. The EMG signals will be sensed using a non-invasive multi-electrode array applied to subjects' forearms.

Interventions

DEVICENon-invasive EMG band instrumentation

The sensed EMG signals from the subjects will be decoded by Phantom X algorithm and used to drive various gestures in a desk-mounted hand prosthesis

Study design

Allocation

Intervention model

SINGLE_GROUP

Primary purpose

OTHER

Masking

NONE

Eligibility

Sex/Gender

ALL

Age

21 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

1. Individuals 21 years in age and older 2. Individuals with amputation of one or both arms at transradial level (applies to amputees only) 3. Ability to follow study directions 4. Willingness and ability to sign Informed Consent

Exclusion criteria

1. Individuals with previously diagnosed muscle pathologies 2. Individuals with impaired muscle function and/or impaired ability to perform normal hand movements (normal participants) or ability to perform normal phantom hand movements (amputees) 3. Individuals with transhumeral or higher amputation of both arms (applies to amputees only) 4. Cognitively impaired to follow study instructions 5. Allergies to skin adhesive materials necessary for cutaneous electrode placement 6. Excessive hair growth on arms and inability to shave off the hair for electrode placement 7. Pregnant woman 8. Arms or residual limbs with insufficient diameter to accommodate the wearing of two cutaneous sensor arrays 9. Injuries, bruises, or open wounds on the arm that needs to be instrumented for the study

Design outcomes

Primary

Measure	Time frame	Description
Gesture accuracy	Acute visit (at most 3 hours)	Percentage of hand gestures accurately decoded by Phantom X algorithm

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026