Suspended

eSVSThe eSVS(TM)Mesh External Saphenous Vein Support Trial

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What is being tested

eSVS, saphenous vein supporting mesh

Device
Who is being recruted

Arterial Occlusive Diseases+5

+ Arteriosclerosis

+ Cardiovascular Diseases

From 21 to 80 Years
+22 Eligibility Criteria
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 2
Interventional
Study Start: August 2008
See protocol details

Summary

Principal SponsorNational University Hospital, Singapore
Study ContactUwe Klima, MD, PhDMore contacts
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: August 1, 2008

Actual date on which the first participant was enrolled.

The objective of the eSVS™ Mesh Saphenous Vein Support Trial is to prospectively evaluate the clinical safety and efficacy of the eSVS™ Mesh for the treatment of Saphenous Vein Graft (SVG) Coronary artery bypass grafting (CABG) versus SVG CABG without an eSVS™ Mesh. The eSVS™ Mesh External Saphenous Vein Support Trial is a prospective, multi-center, randomized, controlled trial enrolling up to 120 patients with multi-vessel coronary artery disease who require SVG CABG of the Right Coronary Artery and the Circumflex Artery due to atherosclerotic coronary artery disease. Patients will serve as their own control (patients will be randomized to either: 1. SVG+eSVS™ Mesh at Right Coronary Artery and SVG at Circumflex Artery or 2. SVG at Right Coronary Artery and SVG+eSVS™ Mesh at Circumflex Artery). Clinical follow-up assessments consisting of a physical exam, laboratory testing, medication review, and adverse event monitoring for all enrolled patients will be performed at 30 days, 6 months and 12 months. In addition, the 12 month follow-up assessment will include angiography. The investigational device being evaluated in this clinical trial is an External Saphenous Vein Support device, the eSVS™ Mesh. The eSVS™ Mesh is an extravascular prosthesis consisting of a highly flexible, semi-compliant knitted nitinol mesh tube that is placed over the patient's saphenous vein graft (SVG) during coronary artery bypass grafting (CABG). The eSVS™ Mesh is designed to: * provide radial support to the vein to prevent graft dilatation * reduce the vein graft diameter to more closely match target coronary artery diameter * provide a more uniform lumen * improve blood flow characteristics * mitigate the development of intimal hyperplasia and graft stenosis The eSVS™ Mesh has compliance characteristics comparable to native internal thoracic arteries. Since the eSVS™ Mesh vascular prosthesis is made of nitinol, it is highly kink resistant.

Official TitleThe eSVS(TM)Mesh External Saphenous Vein Support Trial
NCT00777777
Principal SponsorNational University Hospital, Singapore
Study ContactUwe Klima, MD, PhDMore contacts
Last updated: January 27, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

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

120 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.



Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

From 21 to 80 Years

Range of ages for which participants are eligible to join.

Healthy volunteers not allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Arterial Occlusive DiseasesArteriosclerosisCardiovascular DiseasesCoronary Artery DiseaseCoronary DiseaseHeart DiseasesVascular DiseasesMyocardial Ischemia

Criteria

4 inclusion criteria required to participate
require on-pump SVG CABG of the Right Coronary Artery and the Circumflex Artery due to atherosclerotic coronary artery disease, with ≥ 75% stenosis in each of these vessels

have appropriately sized and accessible target coronary arteries, with a minimum diameter of 1.5 mm and a lack of calcification at the anastomotic site

are able to give their informed written consent

are ≥ 21 years of age

18 exclusion criteria prevent from participating
LVEF < 30% at time of enrollment

Insulin-dependent diabetes

age > 80

no appropriate target coronary vessel

Show More Criteria

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives

One single intervention group is designated in this study

This study does not include a placebo group 

Treatment Groups

Group I

Experimental
Either the Circumflex Coronary Artery or the Right Coronary Artery will receive the mesh supported vein graft and the native saphenous vein as second and control graft.

Study Objectives

Primary Objectives

Secondary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

Recruiting

Department of Cardiac, Thoracic and Vascular Surgery, National University Hospital Singapore

Singapore, SingaporeOpen Department of Cardiac, Thoracic and Vascular Surgery, National University Hospital Singapore in Google Maps
SuspendedOne Study Center