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Not yet recruitingNCT04940403Updated Apr 2, 2026

BurtVision™ for Arm Rehabilitation in Chronic Stroke Survivors:

An interventional study of Burt and Burt + BurtVision in Stroke, sponsored by Spaulding Rehabilitation Hospital. Not yet recruiting. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-04-02.

Sponsored by Spaulding Rehabilitation Hospital · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
38
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
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Study summary

The focus of this study is to perform a preliminary assessment of the efficacy of the BurtVision system. While the Burt robotic-arm assists the patient's upper-limb in their movements, BurtVision will allow the patient to perform unimanual and bimanual activities while leveraging augmented reality games. The investigators will compare clinical outcomes when the BurtVisions ystem is used for training solely relying on unimanual tasks vs. when it is used for training relying on both unimanual and bimanual tasks.

Read the detailed description

The proposed study is a single-blinded randomized clinical trial to evaluate the effect of using the BurtVistion on motor gains after robot-assisted upper-limb. Study participants (stroke survivors) will be recruited at the Spaulding Rehabilitation Hospital - Boston. Subjects will be randomly assigned to one of the two different groups: unimanual or unimanual + bimanual arm therapy using a block-randomized allocation procedure to ensure important covariates, such as baseline Fugl-Meyer Assessment of the Upper Extremity (FMA-UE) scores and chronicity, are balanced between groups.

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Conditions studied

  • Stroke

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In context

Stroke

7,286 studies on the registry are indexed under Stroke; 2,007 are open to participants now.

This study's planned enrollment of 38 is below the median of 50 across 5,369 interventional studies indexed under Stroke.

Browse Stroke studies →

Lead sponsor

Spaulding Rehabilitation Hospital is the lead sponsor of 114 studies on the registry; 26 are open to participants now.

Of its 19 completed or terminated interventional studies of FDA-regulated products, 17 (89%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  1. Male or female, 18-80 years old;
  2. Unilateral ischemic or hemorrhagic stroke at least 6 months and no more than 5 years prior to study enrollment;
  3. Upper extremity hemiparesis as characterized by initial scores on upper limb subtest of the Fugl-Meyer Assessment (FMA-UE) between 12 and 40;
  4. Some active pro-supination range of motion;
  5. Some active metacarpal-phalangeal joint in the hemiparetic hand;
  6. Intact cognitive function to understand the robotic therapy procedures (MMSE>23 and able to follow 3 step command) during initial evaluation visit;

Exclusion criteria

Exclusion Criteria:

  1. Undergoing upper-limb rehabilitation therapy during the period of the study.
  2. Severe spasticity (defined as a Modified Ashworth scale score of 3 or more) that would prevent safe use of the robotic system;
  3. Visual impairments as assessed by the NIH Stroke Scale Visual Field subscale (only subjects with no visual loss will participate in the study); or hemispatial neglect that would impair the subject's ability to play the interactive games (as assessed with the line bisection test);
  4. Severe proprioceptive deficits that impair the ability to process haptic or visual feedback, as assessed by physical examination during screening;
  5. Communication impairments such aphasia that impair the subject's ability of providing feedback (as reported by a physician in his/her medical record);
  6. Individuals with open wounds or recent fracture (\<3 months) in the upper extremity, fragile skin or active infection;
  7. Upper-extremity orthopedic injuries or severe pain resulting in movement limitations.
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
38 participants (estimated)

Study arms

  • Active comparator
    Unimanual robot-assisted upper-limb rehabilitation

    Participants randomized to this arm of the study will undergo 18 one-hour sessions of robot-assisted upper-limb rehabilitation. During the sessions, study participants will only train their hemiparetic arm (unimanual tasks only).

    Device: Burt

  • Experimental
    Bimanual robot-assisted upper-limb rehabilitation

    Participants randomized to this arm of the study will undergo 18 one-hour sessions of robot-assisted upper-limb rehabilitation. During the sessions, study participants will train their hemiparetic arm as well as interacting with the contralateral arm for bimanual tasks (unimanual + bimanual tasks).

    Device: Burt + BurtVision

Interventions

  • DeviceBurt

    18 one-hour sessions of unimanual upper-limb tasks during robot-assisted training with the Burt.

  • DeviceBurt + BurtVision

    18 one-hour sessions of combination of unimanual and bimanual upper-limb tasks during robot-assisted training with the BurtVision.

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What researchers measure

Primary outcomes

  1. Motor Activity Log- Amount of Use

    Self-reported measures of upper extremity activity performance in daily life (amount of use)

    Time frame: Data will be collected at baseline and at 7-8 weeks

Secondary outcomes

  1. Fugl-Meyer Assessment, Upper-Extremity portion

    Assessment of the severity of upper-limb motor impairments

    Time frame: Data will be collected at baseline and at 7-8 weeks

  2. Wolf Motor Function Test

    Assessment of arm functional limitations

    Time frame: Data will be collected at baseline and at 7-8 weeks

  3. Stroke Impact Scale

    Self-reported measure of quality of life after stroke

    Time frame: Data will be collected at baseline and at 7-8 weeks

  4. Motor Activity Log- Quality of Use

    Self-reported measures of upper extremity activity performance in daily life (quality of use)

    Time frame: Data will be collected at baseline and at 7-8 weeks

  5. Upper-Extremity Accelerometry

    Amount of arm use over 72 hours recording with wrist-worn sensors

    Time frame: Data will be collected at baseline and at 7-8 weeks

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Study locations

No study locations are listed for this record.

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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 2, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04940403
Lead sponsor
Spaulding Rehabilitation Hospital
Responsible party
Paolo Bonato (Associate Professor, HMS and Director, Motion Analysis Laboratory, Spaulding Rehabilitation Hospital) — Principal investigator
First posted
Jun 25, 2021
Start date
Sep 1, 2026 (estimated)
Primary completion
Feb 15, 2027 (estimated)
Completion
Jun 1, 2027 (estimated)
Last update
Apr 2, 2026

Study contacts

Catherine Adans-Dester, PhD
Contact
CADANS-DESTER@PARTNERS.ORG
617-952-6321
Paolo Bonato, PhD
principal investigator · Harvard Medical School, Spaulding Rehabilitation Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.

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