NCT03145636

Brief Summary

This is a five-year, single arm, multi-center trial to evaluate the long-term safety and efficacy of the Maestro Rechargeable System in treating obesity. The study will include an observational arm and a randomized sub-study.

Trial Health

43
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
4

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Aug 2017

Longer than P75 for not_applicable

Geographic Reach
1 country

2 active sites

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 5, 2017

Completed
4 days until next milestone

First Posted

Study publicly available on registry

May 9, 2017

Completed
4 months until next milestone

Study Start

First participant enrolled

August 30, 2017

Completed
7.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2024

Completed
Last Updated

May 22, 2019

Status Verified

May 1, 2019

Enrollment Period

7.3 years

First QC Date

May 5, 2017

Last Update Submit

May 20, 2019

Conditions

Keywords

ObesityBariatric surgeryVagal blockingvBloc therapyVagus NervePercent excess weight lossPercent total body weight loss

Outcome Measures

Primary Outcomes (1)

  • Rate of device, therapy and procedure-related serious adverse events (SAEs)

    The primary safety objective is to show that the rate of serious adverse events (SAEs) related to the device, implant/revision procedure (including explant procedure), general surgical procedure, or therapy algorithm is statistically lower than 25% at 5 years.

    5 years

Other Outcomes (6)

  • Rate of therapy-related adverse events at 5 years

    5 years

  • Rate of device-related malfunction at 5 years

    5 years

  • Mean percentage excess weight loss (%EWL) through 5 years

    5 years

  • +3 more other outcomes

Study Arms (3)

Observational arm

OTHER

Subjects will receive the device implant and use the vBloc Achieve Weight Management Program.

Device: vBloc Maestro Rechargeable SystemOther: vBloc Achieve Weight Management Program

Randomized sub-study -Treatment

OTHER

Subjects will be randomly assigned (1:1) either to treatment or control. Treatment arm will receive the device and use of vBloc Achieve Weight Management Program.

Device: vBloc Maestro Rechargeable SystemOther: vBloc Achieve Weight Management Program

Randomized sub-study - Control

OTHER

Subjects will be randomly assigned (1:1) either to treatment or control. Control will participate in a Control Weight Management (CWM) program for 6 months prior to receiving the device implant and using the vBloc Achieve program.

Device: vBloc Maestro Rechargeable SystemOther: vBloc Achieve Weight Management ProgramOther: Control Weight Management (CWM) program

Interventions

Intra-abdominal vagal blocking neuromodulation device for the treatment of obesity

Observational armRandomized sub-study - ControlRandomized sub-study -Treatment

Remotely accessible web-based program to add additional support to subjects with vBloc therapy

Observational armRandomized sub-study - ControlRandomized sub-study -Treatment

In person visits with Registered Dietician, or trained staff who will counsel subjects on energy balance, dietary intake, physical activity and eating behavior modification.

Randomized sub-study - Control

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Signed informed consent
  • Body mass index (BMI) ≥ 40 kg/m2 to 45 kg/m2 or BMI ≥ 35 kg/m2 to 39.9 kg/m2 with one or more obesity related co-morbid conditions
  • Females or males. Note: females of child-bearing potential must have a negative urine pregnancy test at Screen and also within 14 days of implant procedure followed by physician-approved contraceptive regimen for the duration of the study period.
  • At least 18 years of age
  • Failure to respond to supervised diet/exercise program(s) in which the subject was engaged within the last five years
  • Ability to complete all study visits and procedures

You may not qualify if:

  • Patients with cirrhosis of the liver, portal hypertension, or esophageal varices.
  • Patients with a large (\>5cm) symptomatic hiatal hernia
  • Patients for whom magnetic resonance imaging (MRI) is planned
  • Patients at high risk for surgical complications
  • Patients who have a permanently implanted, electrical-powered medical device or gastrointestinal device or prosthesis (e.g. pacemakers, implanted defibrillators, neurostimulators)
  • Patients for whom shortwave, microwave, or therapeutic ultrasound diathermy is planned Note: Diathermy is any treatment that uses high-frequency electromagnetic radiation, electric currents, or ultrasonic waves to produce heat in body tissues. Patients absolutely CANNOT be treated with any type of shortwave, microwave, or therapeutic ultrasound diathermy device whether or not it is used to produce heat. These treatments should not be applied anywhere on the body.
  • Current medical condition that, in the opinion of the investigator, would make the subject unfit for surgery or that would be exacerbated by intentional weight loss. Some examples include diagnosis of cancer, recent heart attack, recent stroke or serious trauma.
  • Recent cessation of cigarette smoking (prior 2 months)
  • History of bariatric surgery, Nissen fundoplication, gastric resection, major upper-abdominal surgery, or other abdominal procedures at the discretion of the investigator (acceptable surgeries include cholecystectomy or hysterectomy)
  • Patients with recent (\<2 years) or current history of illicit drug abuse
  • Patients with significant psychiatric disease including borderline personality disorder, psychosis, schizophrenia, unstable depression, suicidal ideation, or mental retardation

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (2)

HonorHealth

Scottsdale, Arizona, 85258, United States

Location

Winthrop University Hospital

Mineola, New York, 11501, United States

Location

MeSH Terms

Conditions

Obesity, MorbidObesity

Condition Hierarchy (Ancestors)

OverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Charles J Billington, MD

    University of Minnesota

    PRINCIPAL INVESTIGATOR

Study Design

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

Study Record Dates

First Submitted

May 5, 2017

First Posted

May 9, 2017

Study Start

August 30, 2017

Primary Completion

December 1, 2024

Study Completion

December 1, 2024

Last Updated

May 22, 2019

Record last verified: 2019-05

Data Sharing

IPD Sharing
Will not share

Locations