To Evaluate the Clinical Impact of the Point Powered System

NCT07135947 | Not Yet Recruiting FDA Device

• 2 other identifiers: 348027R44NS122687
• Study Type: interventional
• Target: 10
• Locations: 1 country
• Sites: 3

Brief Summary

The objective of this study is to evaluate the efficacy of the Point Powered system as compared to the patient's standard-of-care treatment. This study will be a single subject crossover design where one group of 10 adult partial hand amputees will be evaluated on several metrics on their existing prosthetic treatment (Treatment 1) and the Point Powered system (Treatment 2) over a period of three months using standard two-site myoelectric control. Metrics include: in-clinic functional measures, subjective assessments, bilateral hand use, and prosthesis wear time.

Conditions

Amputation; Traumatic, Hand

Keywords

Prosthesis; Myoelectric; Digits; Fingers

Outcome Measures

Primary Outcomes (24)

• Assessment of Capacity for Myoelectric Control (ACMC)

  The proctor for the measure chooses an everyday activity, such as setting up a table for snacks or replanting a flower, that is relevant to the study population. As the participants perform the chosen task, a trained rater will assess their capacity for control of their myoelectric prosthesis as represented by 30 items reflecting 6 aspects of quality of myoelectric control. These 6 aspects are "the need for external support," "grip force and opening width," "coordination of both hands, "in different positions and in motion (timing)," "repetitive grip and release," and "the need for visual feedback." Each item is scored on a 4-point scale and converted into linear measures of myoelectric control using Rasch analysis methods on the ACMC website. ACMC is the only measure that has been validated for individuals with upper limb (UL) loss who use myoelectric control and has been shown to demonstrate good test-retest reliability.

  Baseline (pre-fitting)

• The Southampton Hand Assessment Procedure (SHAP)

  The SHAP is a time based test of a standardized protocol of 26 timed activities of daily living (ADL) tasks. The SHAP has a set of "common objects" representative of everyday items for the user to pick up. The results of the SHAP is a score which directly compares the abilities of the subject with those of intact able-bodied individuals as well as more refined scores for six prehensile patterns. A SHAP score of 100 is what an intact person is expected to achieve. This test has been validated for normative data.

  Baseline (pre-fitting)

• PROMIS Social Isolation

  PROMIS Social Isolation is a self-reported person-centered measure that focuses on perceptions of being avoided, excluded, detached, disconnected from, or unknown by, others. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  Baseline (pre-fitting)

• PROMIS Ability to Participate

  PROMIS Ability to Participate is a self-reported person-centered measure that focuses on perceived ability to perform one's usual social roles and activities. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  Baseline (pre-fitting)

• PROMIS Physical Function - Upper Extremity

  PROMIS Physical Function - Upper Extremity is a self-reported person-centered measure that focuses on capability to perform activities that require use of the upper extremity including shoulder, arm, and hand. Examples include writing, using buttons, or opening containers. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  Baseline (pre-fitting)

• PROMIS Satisfaction with Social Roles and Activities

  PROMIS Satisfaction with Social Roles and Activities is a self-reported person-centered measure that focuses on satisfaction with performing one's usual social roles and activities. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  Baseline (pre-fitting)

• Assessment of Capacity for Myoelectric Control (ACMC)

  The proctor for the measure chooses an everyday activity, such as setting up a table for snacks or replanting a flower, that is relevant to the study population. As the participants perform the chosen task, a trained rater will assess their capacity for control of their myoelectric prosthesis as represented by 30 items reflecting 6 aspects of quality of myoelectric control. These 6 aspects are "the need for external support," "grip force and opening width," "coordination of both hands, "in different positions and in motion (timing)," "repetitive grip and release," and "the need for visual feedback." Each item is scored on a 4-point scale and converted into linear measures of myoelectric control using Rasch analysis methods on the ACMC website. ACMC is the only measure that has been validated for individuals with upper limb (UL) loss who use myoelectric control and has been shown to demonstrate good test-retest reliability.

  Immediately post-fitting

• The Southampton Hand Assessment Procedure (SHAP)

  The SHAP is a time based test of a standardized protocol of 26 timed activities of daily living (ADL) tasks. The SHAP has a set of "common objects" representative of everyday items for the user to pick up. The results of the SHAP is a score which directly compares the abilities of the subject with those of intact able-bodied individuals as well as more refined scores for six prehensile patterns. A SHAP score of 100 is what an intact person is expected to achieve. This test has been validated for normative data.

  Immediately post-fitting

• PROMIS Social Isolation

  PROMIS Social Isolation is a self-reported person-centered measure that focuses on perceptions of being avoided, excluded, detached, disconnected from, or unknown by, others. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  Immediately post-fitting

• PROMIS Ability to Participate

  PROMIS Ability to Participate is a self-reported person-centered measure that focuses on perceived ability to perform one's usual social roles and activities. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  Immediately post-fitting

• PROMIS Physical Function - Upper Extremity

  PROMIS Physical Function - Upper Extremity is a self-reported person-centered measure that focuses on capability to perform activities that require use of the upper extremity including shoulder, arm, and hand. Examples include writing, using buttons, or opening containers. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  Immediately post-fitting

• PROMIS Satisfaction with Social Roles and Activities

  PROMIS Satisfaction with Social Roles and Activities is a self-reported person-centered measure that focuses on satisfaction with performing one's usual social roles and activities. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  Immediately post-fitting

• Assessment of Capacity for Myoelectric Control (ACMC)

  The proctor for the measure chooses an everyday activity, such as setting up a table for snacks or replanting a flower, that is relevant to the study population. As the participants perform the chosen task, a trained rater will assess their capacity for control of their myoelectric prosthesis as represented by 30 items reflecting 6 aspects of quality of myoelectric control. These 6 aspects are "the need for external support," "grip force and opening width," "coordination of both hands, "in different positions and in motion (timing)," "repetitive grip and release," and "the need for visual feedback." Each item is scored on a 4-point scale and converted into linear measures of myoelectric control using Rasch analysis methods on the ACMC website. ACMC is the only measure that has been validated for individuals with upper limb (UL) loss who use myoelectric control and has been shown to demonstrate good test-retest reliability.

  30 days post-fitting

• The Southampton Hand Assessment Procedure (SHAP)

  The SHAP is a time based test of a standardized protocol of 26 timed activities of daily living (ADL) tasks. The SHAP has a set of "common objects" representative of everyday items for the user to pick up. The results of the SHAP is a score which directly compares the abilities of the subject with those of intact able-bodied individuals as well as more refined scores for six prehensile patterns. A SHAP score of 100 is what an intact person is expected to achieve. This test has been validated for normative data.

  30 days post-fitting

• PROMIS Social Isolation

  PROMIS Social Isolation is a self-reported person-centered measure that focuses on perceptions of being avoided, excluded, detached, disconnected from, or unknown by, others. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  30 days post-fitting

• PROMIS Ability to Participate

  PROMIS Ability to Participate is a self-reported person-centered measure that focuses on perceived ability to perform one's usual social roles and activities. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  30 days post-fitting

• PROMIS Physical Function - Upper Extremity

  PROMIS Physical Function - Upper Extremity is a self-reported person-centered measure that focuses on capability to perform activities that require use of the upper extremity including shoulder, arm, and hand. Examples include writing, using buttons, or opening containers. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  30 days post-fitting

• PROMIS Satisfaction with Social Roles and Activities

  PROMIS Satisfaction with Social Roles and Activities is a self-reported person-centered measure that focuses on satisfaction with performing one's usual social roles and activities. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  30 days post-fitting

• Assessment of Capacity for Myoelectric Control (ACMC)

  The proctor for the measure chooses an everyday activity, such as setting up a table for snacks or replanting a flower, that is relevant to the study population. As the participants perform the chosen task, a trained rater will assess their capacity for control of their myoelectric prosthesis as represented by 30 items reflecting 6 aspects of quality of myoelectric control. These 6 aspects are "the need for external support," "grip force and opening width," "coordination of both hands, "in different positions and in motion (timing)," "repetitive grip and release," and "the need for visual feedback." Each item is scored on a 4-point scale and converted into linear measures of myoelectric control using Rasch analysis methods on the ACMC website. ACMC is the only measure that has been validated for individuals with upper limb (UL) loss who use myoelectric control and has been shown to demonstrate good test-retest reliability.

  60 days post-fitting

• The Southampton Hand Assessment Procedure (SHAP)

  The SHAP is a time based test of a standardized protocol of 26 timed activities of daily living (ADL) tasks. The SHAP has a set of "common objects" representative of everyday items for the user to pick up. The results of the SHAP is a score which directly compares the abilities of the subject with those of intact able-bodied individuals as well as more refined scores for six prehensile patterns. A SHAP score of 100 is what an intact person is expected to achieve. This test has been validated for normative data.

  60 days post-fitting

• PROMIS Social Isolation

  PROMIS Social Isolation is a self-reported person-centered measure that focuses on perceptions of being avoided, excluded, detached, disconnected from, or unknown by, others. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  60 days post-fitting

• PROMIS Ability to Participate

  PROMIS Ability to Participate is a self-reported person-centered measure that focuses on perceived ability to perform one's usual social roles and activities. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  60 days post-fitting

• PROMIS Physical Function - Upper Extremity

  PROMIS Physical Function - Upper Extremity is a self-reported person-centered measure that focuses on capability to perform activities that require use of the upper extremity including shoulder, arm, and hand. Examples include writing, using buttons, or opening containers. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  60 days post-fitting

• PROMIS Satisfaction with Social Roles and Activities

  PROMIS Satisfaction with Social Roles and Activities is a self-reported person-centered measure that focuses on satisfaction with performing one's usual social roles and activities. Responses are scored on a scale of 1 to 5. Individual response scores are summed to get a raw score, which can be converted to a standardized T-score with a mean of 50 and standard deviation of 10.

  60 days post-fitting

Secondary Outcomes (4)

• Mean Prosthesis Wear Duration (MPWD)

  Through study completion, an average of 3 months

• Bilateral magnitude (BM)

  Through study completion, an average of 3 months

• Magnitude ratio (MR)

  Through study completion, an average of 3 months

• Secondary activity duration variables

  Through study completion, an average of 3 months

Study Arms (2)

Current/No Device

NO INTERVENTION

Baseline outcome measurements will be performed with subject's existing partial hand prosthetic treatment, as deemed standard-of-care by the patient's prosthetist. Device types include, but are not limited to, no prosthesis, passive prosthesis, passive positional prosthesis, body-powered prosthesis, myoelectric prosthesis, or other assistive device.

Point Powered

EXPERIMENTAL

Outcome measurements will be performed after the subject has been fit with the Point Powered at 3 different points in time: immediately post-fitting, \~30 days post-fitting, and \~60 days post-fitting.

Device: Point Powered partial hand prosthetic system

Interventions

Point Powered partial hand prosthetic system DEVICE

The Point Powered system includes 1-4 3-joint mechatronic digits, low-profile EMG electrodes, a low-profile controller, and flexible batteries. These components will be integrated into a waterproof and dustproof packaging

Point Powered

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Partial unilateral hand loss with at least index and/or middle fingers amputated at the MCP level
• Intact thumb with full range of motion
• Fluent in English
• Age of 18 years or older

You may not qualify if:

• Patients with a residual limb that is unhealed from the amputation surgery
• Unhealed wounds
• 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
• Uncontrolled pain or phantom pain impacting full participation in the study as determined upon clinical evaluation
• Serious uncontrolled medical problems as judged by the project therapist

Sponsors & Collaborators

• Point Designs: lead
• National Institute of Neurological Disorders and Stroke (NINDS): collaborator
• Hanger Clinic: Prosthetics & Orthotics: collaborator
• University of Colorado, Denver: collaborator
• Infinite Biomedical Technologies: collaborator

Study Sites (3)

University of Colorado Denver | Anschutz Medical Campus

Aurora, Colorado, 80045, United States

Location

Point Designs

Broomfield, Colorado, 80020, United States

Location

Hanger Clinic

Lafayette, Colorado, 80026, United States

Location

Study Officials

• Levin Sliker, PhD

  Point Designs

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Rebecca Connolly

CONTACT

720-600-4753; becca@pointdesigns.com

Levin Sliker, PhD

CONTACT

720-600-4753; levin@pointdesigns.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: August 8, 2025
• First Posted: August 22, 2025
• Study Start: November 1, 2025
• Primary Completion: March 1, 2026
• Study Completion (Estimated): August 31, 2026
• Last Updated: August 22, 2025

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will not share

Locations

US (3)