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

12. november 2026 oppdatert av: 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.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Intervensjon / Behandling

Studietype

Intervensjonell

Registrering (Antatt)

208

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studiesteder

      • Beijing, Kina
        • Xuanwu Hospital
        • Ta kontakt med:

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Kjønn som er kvalifisert for studier

Alle

Beskrivelse

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.

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Intervensjonsmodell: Enkeltgruppeoppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: Carotid Artery Stent System

All participants will undergo carotid artery stenting (CAS).

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Incidence of In-Stent Restenosis (ISR)
Tidsramme: 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)
Tidsramme: 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

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Device Success Rate
Tidsramme: 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
Tidsramme: 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)
Tidsramme: 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)
Tidsramme: 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
Tidsramme: 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)
Tidsramme: through study completion, an average of 1 year
through study completion, an average of 1 year
Incidence of Device Deficiencies
Tidsramme: through study completion, an average of 1 year
through study completion, an average of 1 year

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Samarbeidspartnere

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. desember 2026

Primær fullføring (Antatt)

1. desember 2028

Studiet fullført (Antatt)

1. desember 2028

Datoer for studieregistrering

Først innsendt

5. november 2026

Først innsendt som oppfylte QC-kriteriene

12. november 2026

Først lagt ut (Faktiske)

13. november 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

13. november 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

12. november 2026

Sist bekreftet

1. november 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • ZTYL202401

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