ClinicalTrials.gg
RecruitingNCT05754541Updated Aug 29, 2023

Guo's Endovascular Aortic Arch Replacement of Aortic Dissection by WeFlow-Tribranch Endoprothesis: a Multicenter Pilot Study(GRAFT Study)

An interventional study of WeFlow-Tribranch Aortic Arch Stent Graft System in Aortic Aneurysm and Dissection, sponsored by Hangzhou Endonom Medtech Co., Ltd.. Recruiting at 4 sites in China. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2023-08-29.

Sponsored by Hangzhou Endonom Medtech Co., Ltd. · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Dec 2023, 2 years 10 months ago, but the record still lists the study as recruiting.
  • Started Nov 2022; still recruiting 4 years later.
Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
18 Years to 80 Years
Sex
All
01

Study summary

To explore the effect and prognosis of endovascular interventional therapy in high-risk patients with aortic arch dissection and aneurysm

Read the detailed description

The WeFlow-Tribranch Aortic Arch Stent Graft System first in man study is a prospective, multi-center, single arm trial, which will enroll a total of 20 patients. The goal of this study is to evaluate the safety and efficacy of WeFlow-Tribranch Aortic Arch Stent Graft System in the treatment of patients with aortic arch dissection and aneurysm.

02

Conditions studied

  • Aortic Aneurysm and Dissection

Browse trials for

Keywords

  • Stent Graft
03

In context

Aortic Dissection

205 studies on the registry are indexed under Aortic Dissection; 73 are open to participants now.

This study's planned enrollment of 20 is below the median of 114 across 86 interventional studies indexed under Aortic Dissection.

Browse Aortic Dissection studies →

Lead sponsor

Hangzhou Endonom Medtech Co., Ltd. is the lead sponsor of 17 studies on the registry; 8 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 80 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. Patients aged 18 to 80 years old.
  2. The patient was diagnosed with subacute or chronic aortic arch dissection, or Aortic arch aneurysms.
  3. Patients showing a suitable vascular condition, including:

    1. Ascending aorta length greater than 50 mm (from the aortic sinusoid junction to the proximal cardiac margin of the innominate artery).
    2. Ascending aorta diameter ≥ 24 mm and ≤ 48 mm;
    3. Proximal anchoring zone length ≥ 30 mm;
    4. Innominate artery diameter ≤ 24 mm and ≥ 7 mm, length ≥ 20 mm;
    5. Left common carotid artery or left subclavian artery diameter ≤ 24 mm and ≥ 7 mm, length ≥ 20 mm;
    6. Suitable arterial access for endovascular interventional treatment ;
  4. Patients able to understand the purpose of the trial, participate in the trial voluntarily with form signed by the subject him/herself or his or her legal representative, and willing to complete follow-up visits as required under the protocol.
  5. Patients evaluated by at least two vascular surgeons or cardiac surgeons as high surgical risk patients or deemed to have significant surgical . (The recommended reference criteria are: EuroSCORE score ≥ 6, or CFS score > 4, or 3-4, or there are other high-risk surgical factors that affect the prognosis of the subject, such as patients with a history of open surgery, other high-risk factors judged by a physician team, or patients who refuse open surgery.)

Exclusion criteria

Exclusion Criteria:

  1. Patients that have experienced systemic infection during past three months;
  2. Neck surgery was performed within three months;
  3. Infectious aortic disease、Takayasu arteritis,Marfan syndrome (or other connective tissue diseases );
  4. Patients with severe stenosis, calcification, thrombosis or tortuosity of the Brachiocephalic trunk, Left common carotid artery or left subclavian artery;
  5. Heart transplant patients;
  6. Patients that have suffered MI or stroke during past three months;
  7. Patients with Class IV heart function ( classification) or \<30%
  8. Active peptic ulcers or upper gastrointestinal bleeding occurring within the previous three months;
  9. Hematological abnormality, defined as follows: Leukopenia (WBC \< 3 × 109/L), acute anemia ( \< 90 g/L); thrombocytopenia ( count \< 50 × 109/L);
  10. Patients with renal insufficiency, serum creatinine > 150 umol/l (or 3.0 mg/dl) and / or end-stage renal disease requiring renal dialysis shall be determined by the investigator after comprehensive analysis;
  11. Subjects with severe liver dysfunction and or AST exceeding 3 times the ; Subjects whose serum total (STB) exceeds 2 times the upper limit of normal;
  12. Patients with intestinal necrosis and lower limb ischemic necrosis;
  13. Paraplegic patients;
  14. Patients that are pregnant or breastfeeding;
  15. Patients with allergies to contrast agents;
  16. Patients with a of less than 12 months;
  17. Patients currently participating in other drug or device research;
  18. Any other disease or abnormality that the investigators believe may hinder endovascular interventional treatment.
Terms in these criteria, in plain language(11)

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.

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.

ASA physical status

The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.

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.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    WeFlow-Tribranch Aortic Arch Stent Graft System

    Device: WeFlow-Tribranch Aortic Arch Stent Graft System

Interventions

  • DeviceWeFlow-Tribranch Aortic Arch Stent Graft System

    Endovascular treament in patients with aortic arch dissection and aneurysm by WeFlow-Tribranch Aortic Arch Stent Graft System

06

What researchers measure

Primary outcomes

  1. All-cause mortality and major stroke within 12 months after surgery.

    All-cause mortality includes cardiac mortality, non-cardiac mortality and mortality from unknown causes. Severe stroke is defined as a modified Rankin score (mRS) ≥ 2 at 90 days following stroke onset

    Time frame: 12 months post-intervention

Secondary outcomes

  1. Aortic-related mortality within 12 months post operation.

    Refers to mortality caused by a ruptured aortic dissection/aneurysm or endovascular interventional treatment.

    Time frame: within 12 months post operation

  2. Aortic remodeling results.

    Compare the results of CTA before operation and on the 30th day, 6th month and 12th month after operation, the expansion of the true lumen and the thrombosis of the false lumen at the coverage of the aortic dissection vascular stent to determine whether the blood vessel is successfully remodeled,or CTA reexamination 12 months after operation showed that the maximum diameter of Aortic aneurysm increased by ≤ 5 mm compared with that before operation.

    Time frame: 1 month, 6 months and 12 months post-intervention

  3. Major adverse events occurring within 30 days after surgery.

    Refers to all-cause mortality, myocardial infarction, ischemic stroke or respiratory failure occurring within 30 days after surgery. More specifically, myocardial infarction refers to a drastic reduction or complete interruption of the coronary blood supply due to coronary artery disease, resulting in severe and prolonged acute ischemia of the corresponding myocardium, leading to necrosis of cardiomyocytes. Ischemic stroke refers to the end result of necrosis of brain tissue caused by narrowing or occlusion of the arteries supplying blood to the brain or insufficient blood supply to the brain. Respiratory failure is defined as a state resulting in significantly prolonged intubation, tracheotomy, deterioration of lung function, or other fatal outcomes.

    Time frame: within 30 days after surgery

  4. Incidence of severe adverse events.

    Refers to an event that occurs during the clinical trial that results in mortality or serious deterioration in patient health, including a fatal illness or injury, a permanent defect in body structure or body function, or an event that requires medical or surgical intervention to avoid one or more permanent defects in body structure or body function.

    Time frame: within 12 months post-intervention

07

Study locations

2 of 4 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

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 Aug 29, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05754541
Lead sponsor
Hangzhou Endonom Medtech Co., Ltd.
Responsible party
Sponsor
First posted
Mar 6, 2023
Start date
Nov 10, 2022
Primary completion
Dec 31, 2023 (estimated)
Completion
Dec 31, 2025 (estimated)
Last update
Aug 29, 2023

Study contacts

Wei Guo
Contact
Pla301dml@vip.sina.com
13611129129
wei Guo
principal investigator · Chinese PLA Gencral Hosptial

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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