ClinicalTrials.gg
Status unknownNCT04312685TRANSITUpdated Jul 7, 2021

Transitioning to a Valve -Gated Intrathecal Drug Delivery System

An interventional study of Prometra II Programmable Pump system - Flowonix Medical in Pain, Pain, Chronic and Pain, Intractable, sponsored by Bux, Anjum, MD. Status unknown at 8 sites in United States. Open to participants aged 21 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-07-07.

Sponsored by Bux, Anjum, MD · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Jul 2021), so the status shown — last known as Enrolling by invitation — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
120
Allocation
Non-randomized
Ages
21 Years and older
Sex
All
01

Where this study stands

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

Among 2,880 studies in Pain with a site in United States — 315 open to participants now, 394 under way, 24 of them phase 3. Pain · United States.

Planned enrollment
786th of 2,558
120 · median 66
Started
2020
with 100 others
No phase
1,241 of 2,880
183 open now
Registered
2,119th of 2,880
by date

Among the 2,880 studies in Pain with a site in United States, this one is the 786th largest by planned enrollment of the 2,558 interventional ones that give a count, is one of 101 that started in 2020, is one of 1,241 with no phase, and was the 2,119th registered.

Pain

10,054 studies on the registry are indexed under Pain; 1,649 are open to participants now.

This study's planned enrollment of 120 is above the median of 66 across 8,493 interventional studies indexed under Pain.

Browse Pain studies →

Open to participants now

315 of the 2,880 studies in Pain with a site in United States are open now.

All 315 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 929 Pain studies recruiting now, 384 (41%) set no upper age limit and 434 (47%) stop at 75 or younger; 146 take children under 18; 222 take healthy volunteers.

This study: 21 Years and older · all sexes · healthy volunteers too.

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 2,880 studies in Pain with a site in United States, or all of them as a file.
02

Study summary

This study is designed to explore if the valve-gated pump requires less drug to manage subject pain than the prior standard peristaltic pump in the same subject. The newly implanted valve-gated pump will be programmed to deliver a minimum dose reduction of 20% of the same medication that was delivered in the peristaltic pump prior to explant. The drug therapy will be evaluated and pain scores will be evaluated over time (3 refill cycles prospectively for the valve-gated pump and 6 months retrospectively for the peristaltic pump).

Read the detailed description

This study will employ a single-blind where study participants will not be told about the dose reduction of at least 20% when the valve-gated pump is implanted. A study participant has a significant potential to bias when informed they will get less drug with the new pump than they were receiving in the old pump this could subjectively affect pain scores as well. After valve-gated pump implant and dose reduction, the appropriate pain therapy will be provided to adequately address pain management in the opinion of the study investigator using standard of care processes and VAS scores.

Once subjects have been implanted with the valve-gated pump they will be started on a minimum 20% dose reduction (same medications and concentrations prior to explant). If at any time during the subjects' treatment it is determined by the investigator that the subjects' treatment dose needs to be increased, the dose can be increased in increments not to exceed 5% (no change to concentration) based on VAS scores at current and last visits.

03

Conditions studied

  • Pain
  • Pain, Chronic
  • Pain, Intractable
  • Pain, Back

Keywords

  • IDDS
  • Intrathecal drug therapy
  • pain pump
04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

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

Subjects meeting all of the following criteria will be eligible for enrollment in the study:

  • 21 years of age or older
  • Provide written for study participation
  • Active existing peristaltic intrathecal drug delivery system (IDDS)
  • Stable IDDS dosage and concentration for at least 6 weeks prior to valve-gated pump implant
  • Minimum of 3 months of information from the following:
  • VAS, ODI, Global Pain Scale
  • Pump refill printouts (dosage and concentration)
  • Other Interventions for pain (injections, nerve blocks, etc.)
  • Estimated Replacement Indicator (ERI) printout required showing \< 12 months of battery life
  • Catheter Access Procedure (CAP) study performed to document patency of catheter, if not replacing
  • Diagnosis of nonmalignant, chronic intractable pain as documented in medical history
  • Appropriate candidate for surgery
  • Able to comply with study requirements including visits and assessments, in the opinion of the investigator

Exclusion criteria

Exclusion Criteria:

Subjects meeting any of the following criteria will be excluded from participating in the study:

  • Any listed in the Prometra labeling
  • Significant pain disorder not intended to be treated with the test device or comparator
  • Terminally ill, malignant cancer diagnosis and/or has a of less than 12 months in the opinion of the investigator
  • Pregnant/lactating woman or is of and not utilizing effective .
  • Systemic or local infection (contraindicated for pump implantation)
  • History/evidence of an active disruptive psychiatric disorder or other known condition with potential to impact compliance with study visits and assessments, in the investigator's opinion
Terms in these criteria, in plain language(5)

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.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
120 participants (estimated)

Study arms

  • Active comparator
    Prometra Programmable Pump

    Pain scores and drug doses will be prospectively collected for valve-gated Prometra® Programmable Pump system(Flowonix Medical)' at (refills 1-3) and will be compared to 3 months retrospectively collected pain scores (VAS, ODI and Global Pain Scale Assessments) and drug doses prior to peristaltic pump explant.

    Device: Prometra II Programmable Pump system - Flowonix Medical

  • No intervention
    Retrospective records for peristaltic pump

    Prior pain scores and drug doses from the patients who need a new valve gated pump will be recorded and used for comparison after it is changed.

Interventions

  • DevicePrometra II Programmable Pump system - Flowonix Medical

    This valve gated Prometra II Programmable Pump system will be replacing prior peristaltic Synchromed II pump

    Also known as: Prior peristaltic Synchromed II pump

06

What researchers measure

Primary outcomes

  1. Reduced pain medication through Prometra Implantable Pump System

    Total consumption of pain medications both oral and intrathecal is recorded to show changes.

    Time frame: 12 months

Secondary outcomes

  1. Visual Analog Scale for Pain changes

    Visual Analog Scale (VAS) for Pain is used assess pain throughout the study which shows No pain at low end to extreme Pain at high end.

    Time frame: 12 months

  2. Owestry Disability Index changes

    Owestry Disability Index (ODI) are used to assess changes in lifestyle scores throughout the study which shows patient's level of function in daily living

    Time frame: 12 months

  3. Global Pain Scale Assessments

    Global Pain Scale Assessments will be used to assess changes in scores throughout the study

    Time frame: 12 months

07

Study locations

8 sites
  • Pain and Spine Specialists
    Idaho Falls, Idaho 83404, United States
  • Crimson Pain Management
    Overland Park, Kansas 66209, United States
  • Bux Pain Management
    Lexington, Kentucky 40509, United States
  • Aust Interventional Pain
    Slidell, Louisiana 70458, United States
  • Michigan Head & Spine Institute
    Southfield, Michigan 48034, United States
  • National Spine & Pain Center
    Turnersville, New Jersey 08012, United States
  • The Spine Center at Ridgeway
    Rochester, New York 14626, United States
  • Consultants in Pain Management
    Chattanooga, Tennessee 37421, United States
08

References and documents

Publications

  • Knight KH, Brand FM, Mchaourab AS, Veneziano G. Implantable intrathecal pumps for chronic pain: highlights and updates. Croat Med J. 2007 Feb;48(1):22-34. PubMed 17309136 ↗
  • Deer TR, Smith HS, Cousins M, Doleys DM, Levy RM, Rathmell JP, Staats PS, Wallace M, Webster LR. Consensus guidelines for the selection and implantation of patients with noncancer pain for intrathecal drug delivery. Pain Physician. 2010 May-Jun;13(3):E175-213. PubMed 20495597 ↗
  • Hayek SM, Deer TR, Pope JE, Panchal SJ, Patel VB. Intrathecal therapy for cancer and non-cancer pain. Pain Physician. 2011 May-Jun;14(3):219-48. PubMed 21587327 ↗
  • Hayek SM, Veizi E, Hanes M. Intrathecal Hydromorphone and Bupivacaine Combination Therapy for Post-Laminectomy Syndrome Optimized with Patient-Activated Bolus Device. Pain Med. 2016 Mar;17(3):561-571. doi: 10.1093/pm/pnv021. Epub 2015 Dec 14. PubMed 26814257 ↗
  • Konrad PE, Huffman JM, Stearns LM, Plunkett RJ, Grigsby EJ, Stromberg EK, Roediger MP, Wells MD, Weaver TW. Intrathecal Drug Delivery Systems (IDDS): The Implantable Systems Performance Registry (ISPR). Neuromodulation. 2016 Dec;19(8):848-856. doi: 10.1111/ner.12524. Epub 2016 Oct 12. PubMed 27730704 ↗
  • Tangen KM, Leval R, Mehta AI, Linninger AA. Computational and In Vitro Experimental Investigation of Intrathecal Drug Distribution: Parametric Study of the Effect of Injection Volume, Cerebrospinal Fluid Pulsatility, and Drug Uptake. Anesth Analg. 2017 May;124(5):1686-1696. doi: 10.1213/ANE.0000000000002011. PubMed 28431428 ↗

Individual participant data

Plan to share: No

09

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

Started Jul 2020 (actual). Primary completion is estimated for Apr 2023, 32 months after the start.

Of 3,731 non-industry interventional studies with no phase under Pain, half reached primary completion within 10 months of starting (the median), counting those still running; a quarter within 4 and three quarters within 23. This study's planned 32 months is above that.

Counting every sponsor, half of 3,830 studies reached it within 10 months; a quarter within 4 and three quarters within 23.

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

Registered
Mar 16, 2020
First posted
Mar 18, 2020
StartActual
Jul 27, 2020
Primary completionEst.
Apr 1, 2023
CompletionEst.
Nov 30, 2023
Last update
Jul 7, 2021
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 Jul 7, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04312685
Lead sponsor
Bux, Anjum, MD
Collaborators
Flowonix Medical
Responsible party
Sponsor
First posted
Mar 18, 2020
Start date
Jul 27, 2020
Primary completion
Apr 1, 2023 (estimated)
Completion
Nov 30, 2023 (estimated)
Last update
Jul 7, 2021

Study contacts

Anjum Bux, MD
principal investigator · Owner

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 status unknown, as verified in Jul 2021. You cannot join it, but the record below documents what was studied.

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