ClinicalTrials.gg
CompletedNCT03767777Updated Jun 18, 2025

Prospective Study for Aortic Arch Therapy With stENt-graft for Chimney technologY(PATENCY)

An interventional study of Artery Stent Graft System in Thoracic Aortic Dissection, sponsored by Lifetech Scientific (Shenzhen) Co., Ltd.. Completed at 21 sites in China. Open to participants aged 18 Years to 85 Years. Per ClinicalTrials.gov, last updated 2025-06-18.

Sponsored by Lifetech Scientific (Shenzhen) Co., Ltd. (part of LifeTech Scientific Corporation) · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
150
Allocation
Not applicable
Ages
18 Years to 85 Years
Sex
All
01

Study summary

A prospective, multi-centre, objective performance criteria clinical trial to evaluate the safety and efficacy of Artery Stent Graft System manufactured by Lifetech Scientific (Shenzhen) Co., LTD. for the thoracic aortic dissection involving the aortic arch.

Read the detailed description

This clinical trial was conducted in a qualified clinical trial institution. Investigators will use Artery Stent Graft System manufactured by Lifetech Scientific (Shenzhen) Co., LTD. to treat patients with thoracic aortic dissection involving the aortic arch. This is a Prospective, Multi-center, Objective Performance Criteria Clinical Trial. It is expected to submit to the ethics committee of the lead unit for review in Sep 2018, and complete the implantation of 150 patients in 18 centres nationwide within 12 months, and interim follow-up was conducted before discharge, 30 days after surgery, 6 months after surgery and 12 months after surgery, long-term follow-up will be performed at 24 months postoperatively, 36 months postoperatively, 48 months postoperatively and 60 months postoperatively.

This trial will evaluate whether the device reached the primary safety endpoint and primary efficacy endpoint through two primary endpoint indicators: the incidence of major adverse events (MAE) within 30 days and the success rate of aortic dissection treatment 12 months after surgery.

This trail will evaluate whether the device reached the secondary safety endpoint and efficacy endpoint through several secondary endpoint indicators:

  1. the incidence of all-cause death at 30 days, 6 months, 12 months and 2-5 years after surgery
  2. the incidence of thoracic aortic dissection-related death at 30 days, 6 months, 12 months and 2-5 years after surgery
  3. the incidence of severe adverse events (SAE) at 30 days, 6 months, 12 months and 2-5 years after surgery
  4. the incidence of the device-related adverse events (AE) at 30 days, 6 months, 12 months and 2-5 years after surgery
  5. the Incidence of left upper limb ischemia at 30 days, 6 months, 12 months and 2-5 years after surgery
  6. the incidence of type I or type III leakage at 30 days, 6 months, 12 months after surgery
  7. the incidence of graft migration at 30 days, 6 months, 12 months after surgery
  8. the branching vascular patency rate at 30 days, 6 months, 12 months after surgery
  9. the Incidence of Thoracic aortic dissection -related surgical conversion or re-intervention at 30 days, 6 months, 12 months and 2-5 years after surgery According to the guidelines for clinical trials of aortic stent system, the sponsor will apply for NMPA listing registration after completing a 12-month primary endpoint assessment, and annually follow-up will be conducted until the fifth year for the long-term efficacy observation.
02

Conditions studied

  • Thoracic Aortic Dissection

Keywords

  • Aortic arch
  • Aortic disease
  • Aortic Dissection
  • Stent Graft
03

In context

Dissection, Thoracic Aorta

30 studies on the registry are indexed under Dissection, Thoracic Aorta; 10 are open to participants now.

This study's enrollment of 150 is above the median of 87 across 13 interventional studies indexed under Dissection, Thoracic Aorta.

Browse Dissection, Thoracic Aorta studies →

Lead sponsor

Lifetech Scientific (Shenzhen) Co., Ltd. is the lead sponsor of 44 studies on the registry; 17 are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 85 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 are 18 years and older, but less than 85 years old and not pregnant or lactating;
  2. Patients who can understand the purpose of the trial, voluntarily participate in and sign the , and are willing to complete the follow-up according to the requirements of the protocol;
  3. Patients diagnosed as thoracic aortic dissection involving the arch, and the left subclavian artery branching vessel needs to be revascularized;
  4. Aortic proximal landing zone ≥15mm;
  5. Aortic proximal diameter in the range of 25-44mm;
  6. The left subclavian artery distal landing zone≥15mm;
  7. The left subclavian artery diameter in the range of 5-18mm;
  8. Patients who have eligible imported arterial vessels.

Exclusion criteria

Exclusion Criteria:

  1. Patients with severe stenosis, calcification in the landing area of the stent and easily lead to incomplete stent apposition;
  2. Patients need intervention for other vascular diseases (such as coronary artery /renal artery) in the same surgery, or patients with heart disease and medicine treatment will be affected by the intervention;
  3. Patients with a history of myocardial infraction or acute coronary syndromes in 3 months;
  4. Patients with a history of cerebrovascular events or gastrointestinal bleeding in 3 months, antiplatelet agent and anticoagulant , or tendency of hemorrhage;
  5. Patients have received any major surgical or interventional therapy within 30 days (Operation Classification reaches III or above) or have received interventional therapy;
  6. Patients will receive any major selective operation or interventional therapy in 30days (Operation Classification reaches III or above) or will received interventional therapy;
  7. Patients already treated with an thoracic aortic stent graft and the stent graft can affect operation or intersection part existing between the graft covering area;
  8. Patients with genetic connective tissue disease (e.g., Marfans syndrome) or aorta hereditary disease;
  9. Patients with infectious aortic dissection;
  10. Patients with acute systemic infection;
  11. Patients with major organ failure or other serious diseases;
  12. Patients with a history of active bleeding, clotting disorder, or rejection of blood transfusions;
  13. Patients with liver dysfunction: preoperative creatinine was 2.5 times higher than the normal upper limit; (ALT) or Aspartate transaminase (AST) were 5 times higher than the normal upper limit; serum total (STB) was 2 times higher than the normal upper limit;
  14. Pregnant or lactating women or women who plan to get pregnant;
  15. Patients who can not tolerate to Anaesthetic;
  16. Patients with a history of allergy to contrast media, stents and conveyor materials (including nickel and titanium, polyester, PTFE, and nylon polymer materials);
  17. Patients with a less than 12 months(such as terminal malignant tumor);
  18. Patients who were not suitable for endovascular treatment, judged by the investigator;
  19. Patients who participated in clinical trials of other drugs or medical devices at the same time.
Terms in these criteria, in plain language(5)

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.

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.

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
150 participants (actual)

Study arms

  • Experimental
    Intervention arm

    Participants will be treated with Artery Stent Graft System Intervention: Device: Artery Stent Graft System

    Device: Artery Stent Graft System

Interventions

  • DeviceArtery Stent Graft System

    The Artery Stent Graft System consists of Ankura pro Aorta Stent Graft System along with Longuette Aortic Branch Stent Graft System for chimney technique in the aim of revascularization of aorta branches.The Ankura pro aorta stent graft and Longuette Aortic Branch Stent Graft System are pre-assembled within delivery system. During the operation, the stent graft was delivered to the target lesion location of the vascular real cavity through a delivery system, which was accurately positioned and released to isolate the ruptured opening of aortic dissection, block the continuous flow of blood into the false cavity of the dissection, and avoid further tearing or even rupture of the dissection.

06

What researchers measure

Primary outcomes

  1. The treatment success rate of aortic dissection at 12 months post-implant

    Assessment of the rate of successful disease treatment defined as immediate technical success and freedom from secondary intervention at 12 months of follow-up. Technique success means delivery system is successfully transported to the predetermined position, both of aorta stent graft and aortic branch stent graft successfully expanded and delivery system withdraw successfully.No type I/III endoleak at the end of operation, no conversion to open surgery. (Adjuvant Interventions during operation do not defined as technical failure.)

    Time frame: 12 months after surgery

  2. Incidence of no major adverse events (MAE) occurred at 30 days post-implant

    Major Adverse events (MAE) are defined as aortic dissection related mortality, ischemic stroke, and paraplegia.

    Time frame: 30 days after surgery

Secondary outcomes

  1. Incidence of all-cause death

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

  2. Incidence of Aortic dissection dissection-related death

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

  3. Incidence of Serious Major Adverse Event(SAE)

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

  4. Incidence of device related adverse events(AE)

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

  5. Incidence of left upper limb ischemia

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

  6. Incidence of I/III type endoleaks

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

  7. Incidence of graft migration

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

  8. Branching vascular patency rate

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

  9. Incidence of Thoracic aortic dissection -related surgical conversion or re-intervention

    Time frame: 30 days,6 months, 12 months and 2-5 years after surgery

07

Study locations

21 sites
  • Fuwai hospital, Chinese Academy of Medical Sciences
    Beijing, Beijing 100037, China
  • Chinese PLA General Hospita
    Beijing, Beijing, China
  • The Frist Hospital of Lanzhou University
    Lanzhou, Gansu, China
  • LIU ZHOU WORKER'S HOSPITAL,Fourth Affiliated Hospital of Guangxi Medical University
    Liuzhou, Guangxi, China
  • The second affiliated hospital of Harbin medical university
    Harbin, Heilongjiang, China
  • Henan Provincial People's Hospital
    Zhengzhou, Henan, China
  • The Central Hospital of Wuhan
    Wuhan, Hubei, China
  • Tongji Hospital,Tongji Medical College of Huazhong University of Science&Technology
    Wuhan, Hubei, China
  • The Second Xiangya Hospital of Central South University
    Changsha, Hunan, China
  • Nanjing Drum Tower Hospital (Nanjing Gulou Yi Yuan), the Affiliated Hospital of Nanjing University Medical School
    Nanjing, Jiangsu, China
  • The first affiliated hospital of soochow university
    Suzhou, Jiangsu, China
  • The Second Affiliated Hospital Of Nanchang University
    Nanchang, Jiangxi, China
  • The First Hospital of Jilin University
    Chang chun, Jilin, China
  • Shandong Provincial Hospital
    Jinan, Shandong, China
  • Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine
    Shanghai, Shanghai, China
  • Zhongshan Hospital, Fudan University
    Shanghai, Shanghai, China
  • Xijing Hospital, The Fourth Military Medical University
    Xi'an, Shanxi, China
  • West China hospital of sichuan university
    Chengdu, Sichuan, China
  • Tianjin Chest Hospital
    Tianjin, Tianjin, China
  • Tianjing Medical University General Hospital
    Tianjin, Tianjin, China
  • The first people's hospital of yunnan province
    Kunming, Yunnan, China
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2019 to primary completion in Jun 2021, 28 months.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 5, 2018
First posted
Dec 7, 2018
StartActual
Feb 1, 2019
Primary completionActual
Jun 1, 2021
CompletionActual
Jun 1, 2025
Last update
Jun 18, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 18, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03767777
Responsible party
Sponsor
First posted
Dec 7, 2018
Start date
Feb 1, 2019
Primary completion
Jun 1, 2021
Completion
Jun 1, 2025
Last update
Jun 18, 2025

Study contacts

Chang Shu, professor
principal investigator · Central South University

Oversight

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

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This study is completed, as verified in Jun 2025. You cannot join it, but the record below documents what was studied.

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