Evaluation of the ViSiGiTM Calibration System (ViSiGi)

December 10, 2013 updated by: Leonardo Claros, St. Luke's Hospital and Health Network, Pennsylvania

Evaluation of the ViSiGiTM Calibration System for Effectiveness With Sleeve Visual Delineation at Various Suction Levels.

We hypothesize that using the ViSiGi™ Calibration Tube System in patients undergoing LSG will:

  1. enhance delineation of the stomach anatomy and the surgeon's appreciation of the extent of gastric volume to be removed;
  2. increase the safety profile of the patient (i.e., reduce the likelihood of accidental stapling of the orogastric tube or bougie);
  3. reduce the incidence of OR contamination/infection transmission;
  4. streamline OR workflow, resulting in reduced OR time; and
  5. ensure consistent and reproducible staple lines.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Laparoscopic Sleeve Gastrectomy (LSG), is now widely used as a stand-alone procedure for long-term weight loss. With fewer potential morbidities, comparable weight loss and greater ease of conversion to other procedures, many patients now opt for LSG as their bariatric procedure of choice. During surgery gastric decompression and calibration are compulsory for patient safety, gastric anatomic delineation, ease of surgery and optimal weight loss. The removed gastric volume at surgery seems to predict the procedure's success rates2. LSG performed without calibration (tube) could result in inconsistent staple lines, with retained high sleeve volume and consequent failure. Traditionally, although different tubes are used for gastric decompression and calibration, this protocol interrupts operation room (0R) workflow. Accidental stapling of orogastric tubes and bougies do occur in the OR but are seldom reported. The need for this multiple tube system can be obviated with the ViSiGi™ Calibration Tube System. A single, multipurpose tube that integrates all these various steps could prevent breaks in OR; improve workflow; reduce patient injuries, cross contamination and transmission of infections; and a consistent and reproducible staple line. A similar device has been in use in Europe, Australia and Asia, but the ViSiGi™ Calibration Tube System is the first of its kind to be approved by the FDA. Currently, there are no data on its clinical safety/efficacy in comparison to standard care of separate orogastric tube and bougie in the United States. Therefore, this exploratory study will investigate the gastric delineation ability, general safety and efficacy of the ViSiGi™ Calibration Tube System along with the regular bougie in LSG patients over a six- to twelve-month period. Descriptive outcomes will be reported, with no formal sample size calculation in light of the exploratory study design.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
22

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Pennsylvania
      • Allentown, Pennsylvania, United States, 18104
        • Saint Luke's University and Health Network

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • ability to provide written informed consent for study participation.
  • age 18 years or older
  • candidate for laparosopic gastrectomy with no history of previous bariatric surgeries (i.e., gastric bypass, band, duodenal switch)attendance at an informational seminar and support group
  • clearance for surgery by a registered dietician and certified social worker
  • BMI > 35 with at least one co-morbid condition (e.g., hypertension, diabetes mellitus, sleep apnea, hypercholesterolemia) or BMI > 40 without any co-morbid conditions
  • negative pregnancy test
  • American Society of Anesthesiology score 1-3
  • ability to understand instructions and comply with all study requirements
  • pre-operative %excess weight loss (%EWL) of 3-10%
  • no contraindication for LSG based on upper endoscopy findings
  • pre-operative cardiac consultation for risk stratification
  • evaluation by a sleep medicine specialist to identify risk factors for sleep apnea, with treatment as deemed appropriate

Exclusion Criteria:

  • current participation in another clinical trial that involves any investigational drug or device that would interfere with this study
  • Barrett's Esophagus, severe gastric paresis/atony, achalasia, neoplasm or other complications discovered during preoperative esophago-gastro-duodonoscopy.
  • revisional surgery
  • conversion to open procedure
  • pregnancy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
EXPERIMENTAL: ViSiGi
Utilization of ViSiGi calibration tube
Device: Utilization of ViSiGi calibration tube
Utilization of ViSiGi calibration tube
Other Names:
  • ViSiGi 3D
ACTIVE_COMPARATOR: Usual standard of care
Usual non suction Bougie
Device: Usual non suction Bougie
Usual non suction Bougie

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Efficasy
Time Frame: 3 months
This exploratory study will investigate the gastric delineation ability, general safety and efficacy of the ViSiGi™ Calibration Tube System along with the regular bougie in LSG patients over a six- to twelve-month period. Descriptive outcomes will be reported, with no formal sample size calculation in light of the exploratory study design.
3 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
St. Luke's Hospital and Health Network, Pennsylvania

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Boehringer Ingelheim

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2014

Primary Completion (ANTICIPATED)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2014

Study Completion (ANTICIPATED)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 1, 2014

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 7, 2013

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 10, 2013

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
December 11, 2013

Study Record Updates

Last Update Posted (ESTIMATE)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 11, 2013

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 10, 2013

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2013

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • SLHN2013-62

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