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Single-Arm Trial of Carotid Stenting for Carotid Stenosis (Timing Trial)

12 november 2026 bijgewerkt door: Suzhou Zenith Vascular SciTech Limited

A Prospective, Multicenter, Single-arm, Target Value Clinical Trial to Evaluate the Efficacy and Safety of the Carotid Artery Stent System in the Treatment of Carotid Artery Stenosis

This is a prospective, multicenter, single-group, target value clinical trial planning to enroll 208 eligible subjects. Participants will be treated with the investigational carotid artery stent system and followed up at discharge, 30 days, 6 months, and 12 months postoperatively to evaluate the safety and efficacy of the device for endovascular treatment of carotid artery stenosis.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Studietype

Ingrijpend

Inschrijving (Geschat)

208

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar en ouder (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

General Inclusion Criteria (all must be satisfied):

  1. Age ≥18 years, either sex.
  2. Preoperative carotid duplex ultrasound (DUS) confirms stenosis of the common carotid artery (CCA), internal carotid artery (ICA), or carotid bifurcation, and the subject is deemed suitable for endovascular intervention.
  3. Intraoperative digital subtraction angiography (DSA) confirms symptomatic carotid artery stenosis ≥50% or asymptomatic carotid artery stenosis ≥80% (measured by NASCET criteria). Symptomatic is defined as a non-disabling ischemic stroke or transient ischemic attack (TIA), including cerebral hemisphere events or amaurosis fugax, occurring within 6 months prior to the procedure.
  4. Reference vessel diameter at the target lesion ranges from 3.5 mm to 9.5 mm.
  5. Voluntarily participates in this trial and signs the informed consent form.

CEA High-Risk Inclusion Criteria (at least one criterion must be met):

Clinical High-Risk Factors:

  1. Age >80 years.
  2. Low cardiac output [left ventricular ejection fraction (LVEF) <30%].
  3. Untreated or poorly controlled arrhythmia (recurrent despite standard medical therapy or other treatment).
  4. Cardiac insufficiency (New York Heart Association Class III-IV).
  5. Recent myocardial infarction (occurring between 72 hours and 30 days prior to the procedure).
  6. Unstable angina (Canadian Cardiovascular Society Class 3-4).
  7. Severe chronic obstructive pulmonary disease (COPD), defined as forced expiratory volume in 1 second (FEV1) <50% of predicted value.

Anatomic High-Risk Factors:

  1. Restenosis after prior carotid endarterectomy (CEA).
  2. Contralateral carotid artery occlusion.
  3. Tandem carotid artery lesions.
  4. Carotid artery dissection.
  5. Pseudoaneurysm.

Exclusion Criteria:

  1. Target lesion caused by carotid arteritis.
  2. Target lesion located at the ostium of the common carotid artery.
  3. Severe, long-segment calcification or severe tortuosity at the target lesion preventing adequate stent delivery.
  4. Target lesion is a complete occlusion.
  5. Presence of large acute or subacute thrombus, or arteriovenous malformation adjacent to the target lesion.
  6. Requirement for concurrent stenting or stenting in other territories (intracranial or extracranial) within 30 days after the procedure.
  7. Intracranial hemorrhage within 3 months prior to the procedure.
  8. Large-scale ischemic stroke within 30 days prior to the procedure.
  9. Known intracranial aneurysm that cannot be treated in advance.
  10. Known coagulation disorder (activated partial thromboplastin time [APTT] >3 times the upper limit of normal) or abnormal bleeding diathesis.
  11. Known contraindication to heparin or antiplatelet agents.
  12. Known allergy to device components, contrast agent, or related materials.
  13. Severe hepatic or renal insufficiency (alanine aminotransferase [ALT] or aspartate aminotransferase [AST] >5 times the upper limit of normal; serum creatinine >3 times the upper limit of normal).
  14. Uncontrolled severe hypertension (persistent systolic blood pressure ≥180 mmHg or diastolic blood pressure ≥110 mmHg).
  15. Preoperative bradycardia (heart rate <40 beats per minute).
  16. Preoperative modified Rankin Scale (mRS) score ≥3.
  17. Malignant tumor with extensive metastasis.
  18. Currently participating in another drug or device clinical trial.
  19. Pregnant or lactating women, or women planning pregnancy within 1 year.
  20. Any other condition that, in the investigator's judgment, makes the subject unsuitable for participation in this trial.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: NVT
  • Interventioneel model: Opdracht voor een enkele groep
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Experimenteel: Carotid Artery Stent System

All participants will undergo carotid artery stenting (CAS).

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Incidence of In-Stent Restenosis (ISR)
Tijdsspanne: through study completion, an average of 1 year

Restenosis is defined as ≥50% diameter stenosis occurring within the stent or within 5 mm of the proximal or distal stent edge of the target carotid artery, as assessed by carotid duplex ultrasound (DUS).

through study completion, an average of 1 year
Incidence of Major Adverse Events (MAE)
Tijdsspanne: through study completion, an average of 1 year

Major adverse events (MAE) are defined as the composite incidence of: (1) death, stroke (ischemic or hemorrhagic), or myocardial infarction (MI) occurring within 30 days after the procedure; and (2) death or ipsilateral ischemic stroke of the target vessel occurring from 31 to 365 days after the procedure.

through study completion, an average of 1 year

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Device Success Rate
Tijdsspanne: Intraoperative

Defined as the percentage of enrolled subjects in whom device success is achieved. Device success is defined as successful implantation (including delivery, deployment, and expansion) of the stent covering the target lesion, with successful retrieval of the delivery system.

Intraoperative
Procedural Success Rate
Tijdsspanne: Perioperative

Defined as the percentage of enrolled subjects in whom procedural success is achieved. Procedural success is defined as successful implantation of the stent, with post-procedure angiography demonstrating ≤30% residual stenosis at the target lesion, and freedom from major adverse events (MAE; defined as all-cause death, stroke, or myocardial infarction) prior to hospital discharge.

Perioperative
Incidence of In-Stent Restenosis (ISR)
Tijdsspanne: 6 months

Defined as the percentage of enrolled subjects who develop ISR at 6 months post-procedure. ISR is defined as restenosis within the stent or within 5 mm proximal or distal to the stent edge of the target carotid artery, as assessed by carotid duplex ultrasound (DUS), with DUS criteria indicating ≥50% diameter stenosis.

6 months
Incidence of Target Lesion Revascularization (TLR)
Tijdsspanne: 30 days,6 months,12 months

The percentage of enrolled subjects who undergo TLR within 30 days, at 6 months, and at 12 months post-procedure. TLR is defined as any repeat revascularization (including any surgical or percutaneous intervention) of the target lesion after the initial index procedure.

30 days,6 months,12 months
Incidence of Ipsilateral Ischemic Stroke
Tijdsspanne: 6 months,12 months

Defined as the percentage of enrolled subjects who experience an ipsilateral ischemic stroke at 6 months and 12 months post-procedure. Ipsilateral ischemic stroke is defined as an ischemic stroke occurring in the cerebral hemisphere supplied by the target vessel (the carotid artery treated during the index procedure).

6 months,12 months
Incidence of Adverse Events (AEs) and Serious Adverse Events (SAEs)
Tijdsspanne: through study completion, an average of 1 year
through study completion, an average of 1 year
Incidence of Device Deficiencies
Tijdsspanne: through study completion, an average of 1 year
through study completion, an average of 1 year

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Medewerkers

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 december 2026

Primaire voltooiing (Geschat)

1 december 2028

Studie voltooiing (Geschat)

1 december 2028

Studieregistratiedata

Eerst ingediend

5 november 2026

Eerst ingediend dat voldeed aan de QC-criteria

12 november 2026

Eerst geplaatst (Werkelijk)

13 november 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

13 november 2026

Laatste update ingediend die voldeed aan QC-criteria

12 november 2026

Laatst geverifieerd

1 november 2026

Meer informatie

Termen gerelateerd aan deze studie

Andere studie-ID-nummers

  • ZTYL202401

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

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