Efficacy and Safety of a Covered Self-expandable Dual-layered Metallic Mesh Stent (UVENTA) in Ureteral Obstruction (UVENTA)

February 7, 2013 updated by: HAN, DEOK HYUN, Samsung Medical Center

Efficacy and Safety of a Covered Self-expandable Dual-layered Metallic Mesh Stent (UVENTA™) in Ureteral Obstruction: Prospective, Multi-center, Open Label Study

The purpose of this study is to evaluate Efficacy and Safety of a covered self-expandable dual-layered metallic mesh stent (UVENTA) in ureteral obstruction.

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

Prospective, Multi-center, open label, single arm Study

  1. Treatment

    - Covered self-expandable dual-layered metallic mesh Stents(cSEMS) are implanted in patents with malignant ureteral obstruction

  2. Follow up

    • Assessments including X-ray(KUB), are done 3, 6, 12, 18 and 24 months after the procedure.
    • Diuretic RI scan (DTPA, MAG-3) 3, 6, 12 months after the procedure
    • Imaging such as IVP(Intravenous Pyelogram), ultrasonogram, CT(Computed Tomogram) are performed at 6 and 12 months.

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.
92

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 4

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

  • Korea, Republic of
      • Seoul, Korea, Republic of
        • Recruiting
        • Asan Medical Center
        • Contact:
        • Principal Investigator:
          • Hyeongkeun Park, M.D. Ph.D.
      • Seoul, Korea, Republic of
        • Recruiting
        • Samsung Medical Center
        • Contact:
        • Principal Investigator:
          • Deokhyun Han, M.D.

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

20 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Patients who voluntarily agree to participation and submitted a written informed consent for this study, and 20~80 years

  2. One out of following cases below apply to Patients who have malignant ureteral obstruction or have benign ureteral obstruction without improvement after previous treatment

    • Patients who doesn't want to have regular replacement of plastic stent
    • Patients who has no improvement of obstruction after plastic stent implant
    • Patients who want other Urinary diversion because of stimulatory sign or pain due to plastic stent
  3. Patients with no previous ureteral metal stenting procedure experience.
  4. Patients with more than 6 months of life expectancy
  5. Patients understanding the objective of the study and who are willing to sign a consent

Exclusion Criteria:

  1. Patients with Urothelial Carcinoma
  2. Patients with bladder invasion of malignant tumor
  3. Patients with bladder dysfunction or obstruction of lower urinary tract
  4. one or more times Recurrent Urinary stone in the last 3 years
  5. 2 or more times upper urinary tract infection without upper urinary tract obstruction
  6. Karnofsky scores < 60
  7. Patients with Bacteriuria
  8. Inadequate Patient to participate in the study as judged by the investigator

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: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

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: cSEMS
Patients with malignant ureteral obstruction have cSEMS(Covered self-expandable dual-layered metal stent) implant
Device: cSEMS(Covered self-expandable dual-layered metal stent) implant
Other Names:
  • UVENTA™ Ureteral Stent, Taewoong medical

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
Primary patency rate
Time Frame: 12 months
Rate of Ureter units maintaining patency without interventions after technical success of the primary procedure(Diuretic RI scan: T½ < 20 min)
12 months

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
Technical success rate
Time Frame: 1week, 1 month
Rate of technical success(each Ureter) resolving the stenosis and passing the contrast medium from the kidney to urinary bladder
1week, 1 month
Final patency rate
Time Frame: 12 months
Rate of Ureter units maintaining patency without interventions aside from re-stenting(investigational device) after technical success of the primary procedure(Diuretic RI scan: T½ < 20 min)
12 months
Adverse Event
Time Frame: 1week, 1, 3, 6, 9, 12 months
Rate of total Adverse Events and Adverse Events relevant to Investigational Device
1week, 1, 3, 6, 9, 12 months
Predictive Risk Factors for Primary patency rate
Time Frame: 12 months
Age, Sex, type of tumor(benign/malignant), length of stenosis, location of stenosis, UVJ cross, balloon catheterization, etc.
12 months
the primary patency rate among different location of distal stent
Time Frame: 12 months
difference of the primary patency between the group of Distal stent located in urinary bladder and ureter
12 months
Ureteral stent symptom questionnaire(USSQ)
Time Frame: 1, 3, 6, 9, 12 months
Comparative analysis of USSQ : before procedure and after procedure
1, 3, 6, 9, 12 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.
Samsung Medical Center

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.
Taewoong Medical Co., Ltd.

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: Hyeong keun Park, M.D. Ph.D., Department of Urology, Asan Medical Center

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.
June 1, 2012

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.
June 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.
June 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).
February 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.
February 7, 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.
February 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.
February 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.
February 7, 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.
February 1, 2013

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

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.
  • URT-001

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.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings