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RecruitingNCT07316855CoA-ICS-IUpdated Jan 5, 2026

Evaluating the Feasibility of Bioresorbable Iron-Based Covered Stent: A Clinical Trial

An interventional study of Implantation of Bioresorbable Iron-based Covered Aortic Stent in Coarctation of the Aorta, sponsored by Shubo Song. Recruiting at 1 site in China. Open to participants aged 1 Year to 60 Years. Per ClinicalTrials.gov, last updated 2026-01-05.

Sponsored by Shubo Song · Not applicable, Interventional, and Device feasibility

From the registry’s dates

  • Registered 1 year 4 months after the study started (first participant enrolled Aug 2024, registered Dec 2025).
  • Started Aug 2024; still recruiting 2 years 2 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Not applicable
Ages
1 Year to 60 Years
Sex
All
01

Study summary

A single-center, feasible clinical study to Evaluate the Treatment of Iron Bioresorbable Covered Scaffold System in patients with Coarctation of the Aorta Diseases

Read the detailed description

There is a feasibility study. Ten subjects are intended to participate in this study and without control group. The Iron Bioresorbable Covered Scaffold System will be implanted surgically. Follow-up will be conducted at 1 month, 3 months, 6 months and 12 months post-procedure. The primary endpoint is the rate of no restenosis of the stent at 12 months post-procedure [Defined on a per target lesion basis]

02

Conditions studied

  • Coarctation of the Aorta

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Keywords

  • Coarctation of the Aorta
  • Bioresorbable
  • covered stent
  • Biodegradable
  • iron-based
03

In context

Aortic Coarctation

49 studies on the registry are indexed under Aortic Coarctation; 16 are open to participants now.

This study's planned enrollment of 10 is below the median of 45 across 19 interventional studies indexed under Aortic Coarctation.

Browse Aortic Coarctation studies →

Lead sponsor

This is the only study on the registry with Shubo Song as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
1 Year to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Patient must between 1 and 60 years old

    Patients being clinically diagnosed with CoA or patients with post-operative anastomotic stenosis after CoA surgery,meanwhile meeting one of the following conditions:

    A:Pressure gradient of Carctation in a calm state. B:The degree of aortic stenosis is not less than 50% (degree of Carctation Of the Arota = (diameter of adjacent normal segment of blood vessel - residual vessel lumen diameter of stenotic segment)

    • diameter of adjacent normal segment of blood vessel×100% ) C:Peak velocity of echocardiographic Doppler in the CoA≥2.5m/s
  2. The patients and their families have high compliance, sign the and willing to undergo 1-year follow-ups and related examinations.
  3. The patient's expected lifespan is more than one year after successful treatment with the stent.
  4. Reference vessel (diameter of the adjacent normal segment vessel ) diameter:4-16mm

Exclusion criteria

Exclusion Criteria:

  1. Patients with a history of iron overload or iron disorder, such as hereditary hemochromatosis, etc.
  2. Patients with cardiopulmonary function that cannot tolerate surgery, such as severe heart failure ( Grade III and above) that cannot be controlled by active medical treatment.
  3. Patients with known allergy to contrast agent, iron and its degradation products.
  4. Patients with hemorrhagic disorders
  5. Patients with on antiplatelet agents and anticoagulant therapy.
  6. Patients with thrombosis at the vascular wall of target lesion and the distal or proximal location of the lesion.
  7. Patients with known severe renal or hepatic insufficiency, which are unsuitable for index procedure
  8. Target lesion to be treated where stent was implanted previously.
  9. Patients with severe stenosis or excessive tortuosity in the targeted vessel, or anatomical abnormalities, which predict the device will have difficulty reaching the target lesion.
  10. Other conditions that are unfavorable for stent delivery or balloon expansion.
  11. Patient who have already participated in another clinical trial, and have not yet completed or withdrawn within 3 months before the screening period of this trial.
  12. Patients who are not suitable for participating the trial as per investigator judgement.
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Device feasibility
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
10 participants (estimated)

Study arms

  • Experimental
    TBSI-CoA

    Transcatheter bioresorbable iron-based covered stent implantation for the patients with coarctation of the aorta

    Device: Implantation of Bioresorbable Iron-based Covered Aortic Stent

Interventions

  • DeviceImplantation of Bioresorbable Iron-based Covered Aortic Stent

    A novel bioresorbable iron-based covered stent for coarctation of the aorta

06

What researchers measure

Primary outcomes

  1. 1.Rate of no stent restenosis[Defined on a per target lesion basis]

    Definition of stent restenosis: If the pressure difference within the stent on transthoracic echocardiography is 50% higher than the result of transthoracic echocardiography at 0-1 days post-procedure, will be considered as suspected restenosis.

    Time frame: at 12 months post-procedure

  2. 2.Acute Procedure Success

    Definition of Acute Procedure Success:Meeting any one of the following standards after the stent is delivered to the target lesion site and expanded during the procedure A.The pressure difference between the proximal and distal ends of the stenosis decreased by≥50% ,detected by right heart catheterization after the stent being placed. B.The inner diameter of the original stenotic segment of the blood vessel increases by ≥50% after the stent is placed,detected by pulmonary artery angiography after the stent being placed.

    Time frame: after the stent is delivered to the target lesion site and expanded during the procedure

Secondary outcomes

  1. 1.Acute Technical Success

    Technical Success

    Time frame: after the stent is delivered to the target lesion site and expanded during the procedure

  2. 2.Rate of no stent restenosis

    defined on a per target lesion basis,no stent restenosis

    Time frame: at 1,3, 6 months post-index procedure

  3. 3.The rate of device related Major Adverse Events ( MAE ) and Serious Adverse Events(SAE)

    device related Major Adverse Events ( MAE ) and Serious Adverse Events(SAE)

    Time frame: at 1,3, 6, 12months post-index procedure

  4. 4.The rate of unexpected secondary surgical or interventional procedures

    unexpected secondary surgical or interventional procedures (excluding the expected secondary intervention procedures)

    Time frame: at 1,3, 6, 12months post-index procedure

  5. 5.Rate of Stent Thrombosis

    Stent Thrombosis

    Time frame: at 1,3, 6, 12months post-index procedure

  6. 6.Rate of all-cause mortality

    all-cause mortality

    Time frame: at 1,3, 6, 12months post-index procedure

  7. 7.The rate of displacement after stent implantation

    displacement after stent implantation

    Time frame: at 1,3, 6, 12months post-index procedure

  8. 8.The rate of Major Adverse Events ( MAE ) and Serious Adverse Events(SAE)during the study

    Major Adverse Events ( MAE ) and Serious Adverse Events(SAE)during the study

    Time frame: at 1,3, 6, 12months post-index procedure

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: Yes — The patient's age, weight, as well as the ultrasound and CT data during the perioperative period and follow-up period can be shared, but the patient's name, hospital number and ID number and other confidential information cannot be shared.

Supporting information: Study protocol, Statistical analysis plan, Clinical study report

Access criteria: The International Committee of Medical Journal Editors can access the IPD

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 5, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07316855
Lead sponsor
Shubo Song
Collaborators
Central China Fuwai Hospital of Zhengzhou University
Responsible party
Shubo Song (Associate Chief Physician, Chinese Academy of Medical Sciences, Fuwai Hospital) — Sponsor-investigator
First posted
Jan 5, 2026
Start date
Aug 16, 2024
Primary completion
Jun 30, 2027 (estimated)
Completion
Dec 31, 2027 (estimated)
Last update
Jan 5, 2026

Study contacts

Shubo Song, MD
Contact
songshubo9195@163.com
13523535453
Taibing Fan, MD
principal investigator · Chinese Academy of Medical Sciences, Fuwai Hospital

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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