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

12 novembre 2026 mis à jour par: 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.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Type d'étude

Interventionnel

Inscription (Estimé)

208

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

      • Beijing, Chine
        • Xuanwu Hospital
        • Contact:

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Tout

La description

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.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: N / A
  • Modèle interventionnel: Affectation à un seul groupe
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Carotid Artery Stent System

All participants will undergo carotid artery stenting (CAS).

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Incidence of In-Stent Restenosis (ISR)
Délai: 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)
Délai: 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

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Device Success Rate
Délai: 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
Délai: 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)
Délai: 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)
Délai: 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
Délai: 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)
Délai: through study completion, an average of 1 year
through study completion, an average of 1 year
Incidence of Device Deficiencies
Délai: through study completion, an average of 1 year
through study completion, an average of 1 year

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Collaborateurs

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

1 décembre 2026

Achèvement primaire (Estimé)

1 décembre 2028

Achèvement de l'étude (Estimé)

1 décembre 2028

Dates d'inscription aux études

Première soumission

5 novembre 2026

Première soumission répondant aux critères de contrôle qualité

12 novembre 2026

Première publication (Réel)

13 novembre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

13 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

12 novembre 2026

Dernière vérification

1 novembre 2026

Plus d'information

Termes liés à cette étude

Autres numéros d'identification d'étude

  • ZTYL202401

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .