Early Outcome of Mechanochemical Endovenous Ablation (ClariVein-2)

April 25, 2018 updated by: Michel Reijnen, Rijnstate Hospital

Mechanochemical Endovenous Ablation of Great Saphenous Vein Incompetence Using the ClariVeinTM Device: a Prospective Study

More than 25 percent of the general population suffers from varicose veins, which has a considerable impact on quality of life. Nowadays endovenous treatment modalities for great saphenous incompetence are widely accepted. Mechanochemical endovenous ablation is a new tumescent-less technique, that combines mechanical endothelial damage using a rotating wire with the infusion of a liquid sclerosant. The current study aims at evaluating short and long term outcome after mechanochemical endovenous ablation.

Study Overview

Status

Status

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

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.

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.
Observational

Enrollment (Actual)

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.
124

Contacts and Locations

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

Study Locations

  • Netherlands
      • Nieuwegein, Netherlands
        • St. Antonius Hospital
    • Gelderland
      • Arnhem, Gelderland, Netherlands
        • Rijnstate Hospital

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 to 90 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Patients with insufficiency of the greater saphenous vein will be included.

Description

Inclusion Criteria:

  • Insufficiency of the GSV
  • Ultrasound criteria for endovenous treatment have been met:
  • Diameter GSV between 3-12 mm
  • No thrombus present at the GSV part to be treated
  • Signed informed consent
  • Patient willing to present at follow-up visits
  • Age > 18 jaar

Exclusion Criteria:

  • Patient is unable to give informed consent
  • Patient unable to present at all follow-up visits
  • Other treatment is more suitable for the treatment of the varicose veins than mechano-chemical ablation
  • Pregnancy and breast feeding
  • Known allergy/ contra indication for sclerotherapy
  • Previous ipsilateral surgical treatment of varicose veins
  • Deep venous vein thrombosis in medical history
  • Anticoagulant therapy

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

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
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.
GSV insufficiency
Patients with insufficiency of the greater saphenous vein (GSV) will be included.
Device: ClariVein
Using the ClariVein device, the GSV will be occluded.

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
Occlusion rate
Time Frame: 30 days, 1, 2, and 5 years
The percentage of GSV occluded
30 days, 1, 2, and 5 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Health status
Time Frame: 30 days, 1, 2, and 5 years

Using the RAND 36-Item Short Form Health Survey (SF-36)the general health status will be evaluated at the mentioned time points.

The SF-36 is a set of generic, coherent, and easily administered quality-of-life measures.
30 days, 1, 2, and 5 years
Disease related quality of life
Time Frame: 30 days, 1, 2, and 5 years
Using the AVVQ (Aberdeen Varicose Vein questionnaire) the quality of life related to the disease will be evaluated at the mentioned time points.
30 days, 1, 2, and 5 years
Pain score during procedure
Time Frame: peri-procedural
The pain will be scored during procedure using the VAS score.
peri-procedural
2-weeks post-procedure pain score
Time Frame: two weeks
The pain will be scored daily for two weeks after the procedure using the VAS score.
two weeks
recovery time
Time Frame: two weeks
The time (in days) after the procedure until patients were able to restart daily activity/daily work
two weeks
procedural complications
Time Frame: during procedure
all complications related to the procedure will be evaluated at the mentioned time points.
during procedure
post-procedural complications
Time Frame: 1 year
all complications related to the procedure will be evaluated at the mentioned time points.
1 year

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.
Rijnstate Hospital

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.
St. Antonius Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Michel MJ Reijnen, MD, PhD, Rijnstate Hospital
  • Principal Investigator: Jean-Paul Vries, de, MD, Phd, St. Antonius Hospital

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

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.
November 1, 2010

Primary Completion (Actual)

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.
February 1, 2018

Study Completion (Actual)

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.
February 1, 2018

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).
August 8, 2011

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.
October 24, 2011

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.
October 25, 2011

Study Record Updates

Last Update Posted (Actual)

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.
April 26, 2018

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.
April 25, 2018

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.
April 1, 2018

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.
  • NL26327.091.09

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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