Working… Menu

StimRouter™ for Pain Management in Post-stroke Shoulder Pain (PSSP)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03093935
Recruitment Status : Terminated (Lack of subject participation)
First Posted : March 28, 2017
Last Update Posted : January 6, 2021
Information provided by (Responsible Party):
Bioness Inc

Brief Summary:
StimRouter Neuromodulation System includes an implanted lead which provides peripheral nerve stimulation for chronic pain. Post-stroke shoulder pain patients will be the focus of this study. After meeting inclusion/exclusion criteria, approximately 50 enrolled patients will participate in the study through 6 months of follow-up. Various measures will be used to assess patient response to use of the device.

Condition or disease Intervention/treatment Phase
Chronic Pain Hemiplegic Shoulder Pain Device: StimRouter Neuromodulation System Not Applicable

Detailed Description:

Adults age 18 or over with severe intractable chronic shoulder pain subsequent to stroke will be included. Pain relief will be measured after using StimRouter stimulation therapy targeting the axillary nerve. Existing/pre-study pain medications must be either maintained, reduced throughout the trial.

Study Design is prospective, multi-center and will include 50 subjects The primary endpoint will be a clinically relevant pain reduction (30%) in pain score at 3 months after initiating stimulation in at least 50% of patients with no increase in pain medication.

Primary Outcomes: Reduction of average pain at rest measured by numeric scale (BPI-SF5)

Secondary Outcomes

  1. Change in Worst Pain (BPI-SF3)
  2. Least Pain & Pain Right Now (BPI - SF 4,6)
  3. Patient Global Impression of Change (PGIC)
  4. Patient Satisfaction questionnaire
  5. Shoulder Q Data Collection Points

1) Baseline 2) Month 1 post-programming 3) Month 2 post-programming 4) Month 3 post-programming 5) Month 6 post-programming Data Analysis Analyses will be made to evaluate differences in outcomes compared to baseline measures, with primary endpoint at Month 3

  • Standard statistical estimation and inference will be undertaken for the observed treatment effect.
  • All adverse events will be tabulated by their frequencies and proportions.

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 6 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Intervention Model Description: Cohort- Prospective, multi-center to collect population specific outcome measures in post-stroke patients
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: StimRouter™ Neuromodulation System: Implanted Peripheral Nerve Stimulation for Pain Management When Treating Patients With Chronic Post-stroke Shoulder-pain
Actual Study Start Date : July 1, 2018
Actual Primary Completion Date : November 20, 2020
Actual Study Completion Date : November 20, 2020

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Experimental: StimRouter Neuromodulation System

All eligible patients who are enrolled in this study will be treated with StimRouter stimulation therapy as part of standard of care for the entire duration of the study (6 months) and observed for post-market population-specific data.

Standard recommended stimulation parameters for post-stroke shoulder pain include settings to elicit sensory response (paresthesia) as well as motor response (muscle contraction).

Device: StimRouter Neuromodulation System
The StimRouter Neuromodulation System is indicated for pain management in adults who have severe intractable chronic pain of peripheral nerve origin, as an adjunct to other modes of therapy (e.g., medications). The StimRouter is not intended to treat pain in the craniofacial region.
Other Name: StimRouter

Primary Outcome Measures :
  1. Brief Pain Inventory (BPI) Change [ Time Frame: Change from Baseline at Month 3 ]
    The Brief Pain Inventory (BPI) form is a standard pain assessment tool based on a 0 to 10 scale. The Average Pain at Rest (BPI question number 5) score will be assessed at Baseline and approximately 3 months after programming (therapy start) to determine if there is a significant reduction in average pain with the addition of StimRouter TM treatment to standard of care.

Secondary Outcome Measures :
  1. Patient Global Impression of Change (PGIC) Change [ Time Frame: Change from Baseline at Month 3 ]
    Patient Global Impression of Change (PGIC) survey assesses perceived overall change in a combination of pain and life quality

  2. Patient Satisfaction [ Time Frame: Month 3 ]
    Patient Satisfaction will be measured by a numeric (i.e., 1-5) rating scale (NRS)

  3. Standardized Shoulder Questionnaire (Shoulder Q) Change [ Time Frame: Change from Baseline at Month 3 ]
    Change in difficulty level (on a scale from 0 to 3) or ability (yes/no) for completing normal day-to-day activities such as combing hair or lifting an 8 pound container to the shoulder level without bending the elbow, as measured by the Shoulder Q standardized questionnaire.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Male or female age ≥18 years and confirmed diagnosis of stroke
  • Competent to provide consent and comply with study requirements
  • Minimum 3 months of severe chronic focal post-stroke shoulder pain
  • Stable regimen of pain medications for >4 weeks prior to implant and willing to maintain equivalent dosage throughout the study
  • A mean score of > 4 on the Brief Pain Inventory short form, question 3 (BPI-SF3)
  • Capable and willing to follow all study-related procedures
  • Able to tolerate surface stimulation as demonstrated by motor level response at shoulder

Exclusion Criteria:

  • Patients who decline to provide written consent or to attend follow-up visits
  • Shoulder pathology (e.g. rotator cuff tear, frozen shoulder etc) at target limb
  • Evidence of a primary central or regional pain pattern inclusive of shoulder
  • Diagnosed/confirmed shoulder dysfunction
  • Botox or other neurolytic agent injections in last 3 months
  • Any confounding neurologic conditions affecting the upper limb
  • Evidence or history of skin infections
  • History of adverse reactions to local anesthetics (e.g. lidocaine) or adhesives
  • Patients who have an active systemic infection or are immunocompromised
  • Patients who are pregnant, intend to become pregnant, are breastfeeding or of child-bearing potential and not practicing a medically-approved method of birth control
  • Currently requiring or likely to require Magnetic Resonance Imaging (MRI) within the MRI exclusion zone defined as within 50cm of the iso-center or 16 cm of the MR coil as measured from the edge of the MRI coil.
  • Any metallic implant in the immediate area intended for implant (e.g. TSR)
  • Has demand-type cardiac pacemaker, defibrillator, or electrical nerve implant
  • Potential need for diathermy at the implant site
  • Potential need for therapeutic ultrasound at the implant site
  • Patients who have already been implanted with StimRouter TM prior to study enrollment
  • Presence of a documented condition or abnormality that could compromise the safety of the patient
  • Life expectancy of less than 1 year

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03093935

Layout table for location information
United States, Florida
University of Miami
Miami, Florida, United States, 33136
United States, Utah
University of Utah
Salt Lake City, Utah, United States, 84123
Sponsors and Collaborators
Bioness Inc
Layout table for investigator information
Study Chair: Keith McBride Bioness Inc
Layout table for additonal information
Responsible Party: Bioness Inc Identifier: NCT03093935    
Other Study ID Numbers: STMR Pain 002 PSSP
First Posted: March 28, 2017    Key Record Dates
Last Update Posted: January 6, 2021
Last Verified: December 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

Layout table for additional information
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: Yes
Product Manufactured in and Exported from the U.S.: Yes
Keywords provided by Bioness Inc:
Axillary nerve
Peripheral Nerve Stimulation
Additional relevant MeSH terms:
Layout table for MeSH terms
Shoulder Pain
Chronic Pain
Neurologic Manifestations
Joint Diseases
Musculoskeletal Diseases