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RecruitingNCT06915545Updated Jun 11, 2025

Study on the Aortic Arch Single Branch Stent Graft System

An interventional study of Aortic Arch Single Branch Covered Stent System in Aortic Dissection, sponsored by Lifetech Scientific (Shenzhen) Co., Ltd.. Recruiting at 1 site in China. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2025-06-11.

Sponsored by Lifetech Scientific (Shenzhen) Co., Ltd. · Not applicable, Interventional, and Other

From the registry’s dates

  • Started Apr 2025; still recruiting 1 year 5 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
135
Allocation
Not applicable
Ages
18 Years to 80 Years
Sex
All
01

Study summary

The objective of the study is to evaluate the Safety and Efficacy of Aortic Arch Single Branch Covered Stent System for Aortic Dissection Involving the Aortic Arch

Read the detailed description

The physician shall strictly follow the clinical study protocol and shall not deviate from or substantially change the protocol. However, in case of emergency such as immediate risk to the subjects, which needs tobe eliminated immediately, it may be reported in written form afterwards. During the course of the study,documents such as amendments to the clinical study protocol and informed consent, requests for deviation,and resumption of the suspended clinical study shall be subject to the written approval of the Ethics Committee

02

Conditions studied

  • Aortic Dissection

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03

In context

Aortic Dissection

386 studies on the registry are indexed under Aortic Dissection; 117 are open to participants now.

This study's planned enrollment of 135 is above the median of 84 across 198 interventional studies indexed under Aortic Dissection.

Browse Aortic Dissection studies →

Lead sponsor

Lifetech Scientific (Shenzhen) Co., Ltd. is the lead sponsor of 44 studies on the registry; 18 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

Inclusion criteria

  • Age between 18 and 80 years, gender unrestricted.
  • Patients are diagnosed with Stanford Type B aortic dissection and need revascularization of the left subclavian artery.
  • Anatomical criteria:

    • The diameter range of the proximal aortic landing zone is 20-42 mm.
    • The length of the proximal aortic landing zone (the distance from the posterior edge of the left common carotid artery orifice to the first intimal tear) is ≥15 mm.
    • The distance between the left common carotid artery and the left subclavian artery is ≥5 mm.
    • The length of the left subclavian artery landing zone is ≥25 mm, and the diameter range of the landing zone is 5-15 mm.
    • Suitable access to the femoral artery, iliac artery, and upper limb artery.
  • Patients understand the purpose of the study, volunteer to participate, and are willing to complete follow - up visits as required by the protocol.

Exclusion criteria

Exclusion Criteria:

  • Previously undergone endovascular interventional treatment involving the aortic arch, or having a history of aortic surgical repair surgery, which affects the implantation and evaluation of the single branched covered stent system of the aortic arch.
  • Patients with severe stenosis, calcification, or mural thrombus in the stent anchoring area pose challenges. Such conditions may easily prevent covered stents from adhering to the vessel wall or affect stent patency.
  • Infectious aortic diseases, giant cell arteritis, Marfan syndrome (or other hereditary connective tissue diseases).
  • Patients with systemic or local infections that may increase the risk of infection of the endovascular graft.
  • Patients who have received abdominal aortic surgical or endovascular interventional surgery within the past 3 months.
  • Patients who have had a stroke attack (excluding transient ischemic attack, TIA) or myocardial infarction within the past 3 months.
  • Patients known to be allergic to contrast agents, stent materials, and delivery device materials (referring to nitinol, Dacron, PTFE, nylon polymer materials).
  • Patients known to have contraindications to anticoagulant and antiplatelet drugs.
  • Patients intolerant to general anesthesia.
  • Patients with severe abnormalities in liver, kidney, and cardiac function before the operation [Subjects with a serum creatinine level exceeding 150 μmol/L; Subjects with alanine aminotransferase (ALT) or aspartate aminotransferase (AST) exceeding 5 times the upper limit of the normal value; Subjects with serum total bilirubin (STB) exceeding 2 times the upper limit of the normal value; Subjects with a left ventricular ejection fraction lower than 50% as indicated by echocardiography.].
  • Patients whose expected lifespan is shorter than 1 year.
  • Female patients who are planning to conceive, are currently pregnant, or are breastfeeding.
  • Patients whom, in the researcher's judgment, are not appropriate candidates for endovascular treatment.
  • Patients who have been involved in other clinical studies and have not withdrawn from or exited the respective study groups within the three months preceding the screening period of this present study.
05

Study design

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

Study arms

  • Experimental
    Aortic Arch Single Branch Covered Stent System

    Aortic Arch Single Branch Covered Stent System for Aortic Dissection Involving the Aortic Arch

    Device: Aortic Arch Single Branch Covered Stent System

Interventions

  • DeviceAortic Arch Single Branch Covered Stent System

    to Evaluate the Safety and Efficacy of the Aortic Arch Single Branch Covered Stent System for Aortic Dissection Involving the Aortic Arch

06

What researchers measure

Primary outcomes

  1. Incidence rate for freedom from major adverse events (MAE) within 30 days postoperatively

    Major adverse events refer to the occurrences of all-cause death, myocardial infarction, renal failure, liver failure, respiratory failure, paraplegia, ischemic stroke, intestinal necrosis. Among them, renal failure means that it leads to persistent dialysis, kidney transplantation, or other fatal outcomes. Respiratory failure means that it leads to a significantly prolonged intubation time, tracheotomy, deterioration of lung function, or other fatal outcomes. Intestinal necrosis refers to intestinal ischemia that requires intestinal resection or leads to other fatal outcomes.

    Time frame: pre-discharge up to 14 days and 30 days post-surgery

  2. Procedural success rate of aortic dissection treatment 12 months postoperatively

    The composite endpoints include immediate technical success post-procedure and, at the 12-month CTA reexamination, the absence of displacement of the main aortic and branch stents, no type I or III endoleaks, patency of the branch stents, and no secondary surgical interventions during follow-up.

    Time frame: intraoperative and 12 months postoperatively

Secondary outcomes

  1. All-cause mortality

    All-cause mortality Refers to deaths from any cause that occur within the follow-up time points.

    Time frame: Pre-discharge up to 14 days, 30 days post-surgery, 6 and 12 months and 2-5 years postoperatively

  2. Mortality rate related to aortic dissection

    Mortality rate related to aortic dissection refers to the death caused by the rupture of aortic dissection or the endovascular treatment of aortic dissection.

    Time frame: Pre-discharge up to 14 days, 30 days post-surgery, 6 and 12 months and 2-5 years postoperatively

  3. Incidence rate of severe adverse events

    Serious adverse events refer to those occurring during the process of a clinical trial that lead to death or a serious deterioration of the health condition. This includes fatal diseases or injuries, permanent defects in body structures or body functions, the need for hospitalization or an extended hospital stay, and the requirement for medical or surgical interventions to prevent permanent defects in body structures or body functions.

    Time frame: Pre-discharge up to 14 days, 30 days post-surgery, 6 and 12 months and 2-5 years postoperatively

  4. Incidence rate of Device-related adverse events

    Adverse events refer to adverse medical events that occur during the process of a clinical trial, regardless of whether they are related to the medical device used in the trial. However, normal postoperative stress responses should be distinguished, such as fever, discomfort in the chest and back, etc. If, upon the judgment of the researcher, it is determined to be a normal postoperative stress response, there is no need to record it as an adverse event of the medical device. Adverse events related to the medical device refer to situations that are determined by the researcher to be definitely related, possibly related, or undeterminable in relation to the medical device used in the trial.

    Time frame: Pre-discharge up to 14 days, 30 days post-surgery, 6 and 12 months and 2-5 years postoperatively

  5. The incidence rate of left upper limb ischemia

    Left upper limb ischemia may present with weakness, coldness, pain, and numbness in the left upper limb. The ulnar artery, radial artery, and brachial artery may show weakened or absent pulsation.

    Time frame: Pre-discharge up to 14 days, 30 days post-surgery, 6 and 12 months and 2-5 years postoperatively

  6. Incidence rate of Type I/III endoleak

    A Type I endoleak occurs when there is a gap between the graft and the vessel wall at the "seal zones." This gap allows blood to flow alongside the graft into the aneurysm sac, creating pressure within the sac and increasing the risk of rupture. Type I endoleaks often occur when the aneurysm's anatomy is unsuitable for endovascular aneurysm repair (EVAR) or due to inappropriate device selection. However, vessel dilation over time can also cause this type of endoleak. Immediate attention is typically required because of the high risk of sac enlargement and rupture.

    Time frame: Intraoperative, pre-discharge(up to 14 days), within 30 days and 6 and 12 months postoperatively

  7. Incidence rate of stent graft migration

    Migration is defined as the single branched covered stent system of the aortic arch having a displacement of more than 10 mm compared with its position before discharge .

    Time frame: 6 and 12 months postoperatively

  8. The patency rate of the branch vessel

    Branch vessel patency is defined as stenosis of ≤50%

    Time frame: Pre-discharge up to 14 days, 6 and 12 months postoperatively

  9. The success rate of vascular remodeling for aortic dissection

    Evaluate the expansion of the true lumen and the thrombosis of the false lumen at the sites covered by the vascular stents for aortic dissection, so as to determine whether the vascular remodeling is successful.

    Time frame: within 30 days and 6 and 12 months postoperatively

  10. The incidence rate of conversion to thoracotomy or secondary interventional surgery due to aortic dissection

    Evaluate whether the subjects have been converted to thoracotomy or secondary interventional surgery due to aortic dissection.

    Time frame: Pre-discharge up to 14 days, 30 days post-surgery, 6 and 12 months and 2-5 years postoperatively

07

Study locations

1 of 1 sites recruiting
  • Second Xiangya Hospital of Central South University
    Changsha, China
    • chang shu, Professor · Contact
    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 Jun 11, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06915545
Lead sponsor
Lifetech Scientific (Shenzhen) Co., Ltd.
Responsible party
Sponsor
First posted
Apr 8, 2025
Start date
Apr 30, 2025
Primary completion
Apr 30, 2027 (estimated)
Completion
Jun 30, 2031 (estimated)
Last update
Jun 11, 2025

Study contacts

chang shu, Professor
Contact
changshu01@yahoo.com
13607444222
chang shu, Professor
principal investigator · Chinese Academy of Medical Sciences, Fuwai Hospital

Oversight

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

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