Teleoperation Experimental Comparison With Able-bodied Subjects

Not Applicable

Completed

Conditions: Amputation; Traumatic, Arm, Upper

Interventions: Device: Semi-autonomous myoelectric control algorithm
Device: Standard-of-care myoelectric control algorithm

Registration Number: NCT05048394

Lead Sponsor: Point Designs

Brief Summary: To compare the use of the semi-autonomous control algorithm (condition 1) with the standard of care myoelectric system used with the TASKA prosthetic hand (condition 2). Able bodied subjects will enroll in a laboratory based experimental session at the University of Colorado at Boulder. Subjects will be fitted with a by-pass prosthesis which enables the able-bodied subject to control the prosthetic hand using the myoelectric signals on their able limb. A TASKA prosthetic hand will be sensorized using the Point Touch technology. In a randomized order, the subjects will perform functional tasks evaluating dexterity and assistance with prolonged gross motor movement using each experimental condition. Then, a direct comparison can be made across subjects for the semi-autonomous control algorithm and the standard of care myoelectric system used in the TASKA prosthetic hand.

Detailed Description: Not available

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 11

Inclusion Criteria

Able-bodied subject
Fluent in English
Age of 18 years or greater

Exclusion Criteria

Significant cognitive deficits as determined upon clinical evaluation
Significant neurological deficits as determined upon clinical evaluation
Significant physical deficits of the residual limb impacting full participation in the study as determined upon clinical evaluation

Study & Design

Study Type: INTERVENTIONAL

Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Standard-of-care then Semi-autonomous myoelectric control	Standard-of-care myoelectric control algorithm	The standard of care myoelectric control algorithm will be implemented on a by-pass prosthetic socket with a sensorized TASKA prosthetic hand The semi-autonomous myoelectric control algorithm will be implemented on a by-pass prosthetic socket with a sensorized TASKA prosthetic hand.
Semi-autonomous then Standard-of-care myoelectric control	Standard-of-care myoelectric control algorithm	The semi-autonomous myoelectric control algorithm will be implemented on a by-pass prosthetic socket with a sensorized TASKA prosthetic hand. The standard of care myoelectric control algorithm will be implemented on a by-pass prosthetic socket with a sensorized TASKA prosthetic hand
Semi-autonomous then Standard-of-care myoelectric control	Semi-autonomous myoelectric control algorithm	The semi-autonomous myoelectric control algorithm will be implemented on a by-pass prosthetic socket with a sensorized TASKA prosthetic hand. The standard of care myoelectric control algorithm will be implemented on a by-pass prosthetic socket with a sensorized TASKA prosthetic hand
Standard-of-care then Semi-autonomous myoelectric control	Semi-autonomous myoelectric control algorithm	The standard of care myoelectric control algorithm will be implemented on a by-pass prosthetic socket with a sensorized TASKA prosthetic hand The semi-autonomous myoelectric control algorithm will be implemented on a by-pass prosthetic socket with a sensorized TASKA prosthetic hand.

Primary Outcome Measures

Name	Time	Method
Transfer Success Rate in a Fragile Box and Blocks Task	Day 1 (1 hour)	The participant is instructed to transfer a fragile, ball-like object that breaks at 8 Newtons of force over a 10-centimeter high barrier as many times as possible in a 2-minute period. A broken or dropped object is considered an unsuccessful transfer. The number of successful and attempted transfers is recorded. This task is modeled after the Box-and-Blocks Test and has been used to validate fine dexterity of myoelectric upper limb prostheses.

Secondary Outcome Measures

Name	Time	Method
Ball Drops in a Holding Task	Day 1 (1 hour)	The participant is instructed to pick up a 2-inch Styrofoam ball and hold the object above the desk or table for 2 minutes. If the ball is dropped, the participant is instructed to pick it back up. The 2-minute timer does not restart. The number of times the ball was dropped is recorded. This task has been used to validate the ability of myoelectric prostheses to assist with gross, prolonged movements.