ClinicalTrials.gg
CompletedNCT03318341Updated May 7, 2019Results posted

TheraBracelet Phase I

An interventional study of Real Stimulation and Sham Stimulation in Hand Function, Stroke and Upper Extremity, sponsored by TheraBracelet, Inc.. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-05-07.

Sponsored by TheraBracelet, Inc. · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
26
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 1,991 studies in Stroke with a site in United States — 394 open to participants now, 490 under way, 17 of them phase 3. Stroke · United States.

Enrollment
998th of 1,617
26 · median 40
Started
2018
with 104 others
No phase
1,121 of 1,991
272 open now
Registered
988th of 1,991
by date

Among the 1,991 studies in Stroke with a site in United States, this one is the 998th largest by enrollment of the 1,617 interventional ones that give a count, is one of 105 that started in 2018, is one of 1,121 with no phase, and was the 988th registered.

Stroke

8,255 studies on the registry are indexed under Stroke; 2,056 are open to participants now.

This study's enrollment of 26 is below the median of 49 across 6,024 interventional studies indexed under Stroke.

Browse Stroke studies →

Open to participants now

394 of the 1,991 studies in Stroke with a site in United States are open now, in 12 countries. Each count lists the studies.

All 394 open studies →

Who these studies take

Of the 1,415 Stroke studies recruiting now, 697 (49%) set no upper age limit and 280 (20%) stop at 75 or younger; 77 take children under 18; 196 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →
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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 1,991 studies in Stroke with a site in United States, or all of them as a file.
02

Study summary

This project aims to test a new technology that may improve hand function impaired from a stroke, thereby improving independence and quality of life.

Read the detailed description

Post-stroke hand impairment is highly prevalent and severely restricts functional ability and independence. Yet, there is no assistive device to help hand function at home, every day, during activities of daily living. Existing devices such as hand-opening orthoses are expensive, uncomfortable, bulky, and meant for use during short therapy sessions as opposed to during daily living. Thus their impact is limited. Consequently, the development of efficacious and affordable assistive device is of importance. This project addresses this critical gap by providing an innovative patent-pending technology. The "TheraBracelet" is a wristband applying imperceptible vibration to skin. TheraBracelet is efficacious, as it has been shown to immediately improve chronic stroke survivors' touch sensation and hand dexterity in previous studies. TheraBracelet is affordable by using only a low-cost vibrator. TheraBracelet is also translational, because a vibrator strategically placed at the wrist does not interfere with dexterous finger motions, and it is low-risk by involving only imperceptible vibration on skin. These practicalities assure easy adoption in home environment for large impact on sensorimotor impairment. The essential next step, thus the objective of this Phase I project, is to determine the feasibility and safety of using this assistive device all day every day for a month during daily activity. This objective will be accomplished in a double-blinded, randomized, controlled, crossover design study. Feasibility (compliance of using the device everyday) and safety will be assessed for the real vibration condition compared to the sham vibration condition (wearing the device without vibration). The feasibility and safety level comparable to those of wearing a watch and of a comparable FDA-approved device will support viability of TheraBracelet with necessary regulatory approvals. This project is expected to lead to an assistive wristband that increases hand function during activities of daily living for a large number of stroke survivors with hand impairment.

03

Conditions studied

  • Hand Function
  • Stroke
  • Upper Extremity
  • Hemiparesis
  • Cerebrovascular Accident
  • Stroke Rehabilitation

Browse trials for

Keywords

  • physical stimulation
  • Subliminal stimulation
  • stroke rehabilitation
  • upper extremity
  • paresis
  • patient safety
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age: 18 years or older
  • Time since stroke: > 3 months
  • Those with at least some movement in the affected upper limb
  • Ability to put on the device at home
  • Ability to perform the Box and Block Test with a score > 0

Exclusion criteria

Exclusion Criteria:

  • Comorbidity such as neuropathy, orthopaedic conditions in the hand
  • Compromised skin integrity of the hand/wrist.
  • Participation in an upper limb rehabilitation program concurrently
  • Pregnancy
  • A language barrier or cognitive impairment that precludes following
  • Individuals whose swelling changes dramatically during the day
  • Participant has received Botulinum toxin injection in the past 3 months
  • Inability or unwillingness of subject or legal guardian/representative to give
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
26 participants (actual)

Study arms

  • Other
    Real then Sham

    Participants are instructed to wear the TheraBracelet device on the affected wrist every day for at least 8 hours/day during their daily activity for 1 month. After 2-week washout, participants are again instructed to wear the device on the affected wrist every day for at least 8 hours/day during their daily activity for 1 month. The device applies real stimulation in the first month. The device applies sham stimulation in the second month. The stimulation is imperceptible. Thus, participants do not perceive stimulation in either month.

    Device: Real Stimulation · Device: Sham Stimulation

  • Other
    Sham then Real

    Participants are instructed to wear the TheraBracelet device on the affected wrist every day for at least 8 hours/day during their daily activity for 1 month. After 2-week washout, participants are again instructed to wear the device on the affected wrist every day for at least 8 hours/day during their daily activity for 1 month. The device applies sham stimulation in the first month. The device applies real stimulation in the second month. The stimulation is imperceptible. Thus, participants do not perceive stimulation in either month.

    Device: Real Stimulation · Device: Sham Stimulation

Interventions

  • DeviceReal Stimulation

    The device applies wrist vibration at a subthreshold (imperceptible) level.

  • DeviceSham Stimulation

    The device applies no vibration.

06

What researchers measure

Primary outcomes

  1. Safety - Occurrence of Device-Related Adverse Events (AE)

    Any worsening of hand sensation, dexterity, grip strength, upper limb pain, swelling, spasticity, skin irritation, or any other adverse events (assessed every week) that sustained until the end of the month or occurred at the end of the month.

    Time frame: Two 1-month durations

  2. Feasibility - User Compliance in Wearing the Device

    Time frame: Two 1-month durations

07

Results

Posted Mar 6, 2019

Participant flow

Month 1
Participant flow — Month 1
MilestoneReal Then ShamSham Then Real
Started1313
Completed1312
Not completed01
Month 2
Participant flow — Month 2
MilestoneReal Then ShamSham Then Real
Started1312
Completed1312
Not completed00

Outcome measures

PrimarySafety - Occurrence of Device-Related Adverse Events (AE)

Any worsening of hand sensation, dexterity, grip strength, upper limb pain, swelling, spasticity, skin irritation, or any other adverse events (assessed every week) that sustained until the end of the month or occurred at the end of the month.

Time frame:
Two 1-month durations
Reported as:
Count of participants · Participants
Safety - Occurrence of Device-Related Adverse Events (AE)
ParticipantsReal Then ShamSham Then Real
AE Month 124
AE Month 201
PrimaryFeasibility - User Compliance in Wearing the Device
Time frame:
Two 1-month durations
Reported as:
Count of participants · Participants
Feasibility - User Compliance in Wearing the Device
ParticipantsReal Then ShamSham Then Real
Compliance Month 11312
Compliance Month 21312

Adverse events

Collected over Adverse event data were collected for 2.5 month study period.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Real Then Sham - Month 1 (Real)0/13 (0%)1/13 (7.7%)8/13 (61.5%)
Sham Then Real - Month 1 (Sham)0/12 (0%)2/12 (16.7%)6/12 (50%)
Real Then Sham - Month 2 (Sham)0/13 (0%)0/13 (0%)6/13 (46.2%)
Sham Then Real - Month 2 (Real)0/12 (0%)0/12 (0%)7/12 (58.3%)
Most frequent serious events
Most frequent serious events
EventReal Then Sham - Month 1 (Real)Sham Then Real - Month 1 (Sham)Real Then Sham - Month 2 (Sham)Sham Then Real - Month 2 (Real)
Transient ischemic attack-like symptomsGeneral disorders0/132/120/130/12
Skin surgerySkin and subcutaneous tissue disorders1/130/120/130/12
Most frequent other events
Most frequent other events
EventReal Then Sham - Month 1 (Real)Sham Then Real - Month 1 (Sham)Real Then Sham - Month 2 (Sham)Sham Then Real - Month 2 (Real)
Temporary feeling of numbness or worsening in sensory scoresGeneral disorders3/133/122/135/12
Temporary swellingGeneral disorders0/130/121/133/12
Temporary skin irritationSkin and subcutaneous tissue disorders3/131/122/131/12
Temporary increase in painGeneral disorders0/132/120/131/12
OtherGeneral disorders2/130/122/131/12
Temporary reduction in grip strengthMusculoskeletal and connective tissue disorders1/130/121/131/12
Temporary increase in Modified Ashworth scale scoresGeneral disorders1/130/120/130/12

Baseline characteristics

Age, Continuous
Age, Continuous(years)Real Then ShamSham Then RealTotal
Mean62 ± 1158 ± 1060 ± 11
Sex: Female, Male
Sex: Female, Male(Participants)Real Then ShamSham Then RealTotal
Female448
Male9918
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Real Then ShamSham Then RealTotal
Hispanic or Latino112
Not Hispanic or Latino121224
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Real Then ShamSham Then RealTotal
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American5611
White7613
More than one race000
Unknown or Not Reported112
Region of Enrollment
Region of Enrollment(participants)Real Then ShamSham Then RealTotal
United States131326
08

Study locations

1 site
  • Medical University of South Carolina
    Charleston, South Carolina 29425, United States
09

References and documents

Publications

  • Seo NJ, Enders LR, Fortune A, Cain S, Vatinno AA, Schuster E, Ramakrishnan V, Feng W. Phase I Safety Trial: Extended Daily Peripheral Sensory Stimulation Using a Wrist-Worn Vibrator in Stroke Survivors. Transl Stroke Res. 2020 Apr;11(2):204-213. doi: 10.1007/s12975-019-00724-9. Epub 2019 Aug 23. PubMed 31444692 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Yes — Upon request.

Time frame: The data will become available within 1 year from the study completion date for 6 years.

Access criteria: De-identified data only

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jan 2018 to primary completion in Oct 2018, 9 months.

Results were first posted in Mar 2019, 4 months after primary completion.

Of 144 industry-sponsored interventional studies with no phase under Stroke, half reached primary completion within 24 months of starting (the median), counting those still running; a quarter within 11 and three quarters within 43. This study's 9 months is below that.

Counting every sponsor, half of 3,252 studies reached it within 23 months; a quarter within 10 and three quarters within 46.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 20, 2017
First posted
Oct 23, 2017
StartActual
Jan 9, 2018
Primary completionActual
Oct 22, 2018
CompletionActual
Nov 28, 2018
Results first posted
Mar 6, 2019
Last update
May 7, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 7, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03318341
Lead sponsor
TheraBracelet, Inc.
Responsible party
Sponsor
First posted
Oct 23, 2017
Start date
Jan 9, 2018
Primary completion
Oct 22, 2018
Completion
Nov 28, 2018
Results posted
Mar 6, 2019
Last update
May 7, 2019

Study contacts

Na Jin Seo, PhD
principal investigator · Medical University of South Carolina

Oversight

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

Not currently enrolling

This study is completed, as verified in Apr 2019. You cannot join it, but the record below documents what was studied.

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