Single-Arm Trial of Carotid Stenting for Carotid Stenosis (Timing Trial)
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
Status
Forhold
Forhold
Intervensjon / Behandling
Intervensjon / Behandling
Studietype
Studietype
Registrering (Antatt)
Registrering
Fase
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiekontakt
Studiekontakt
- Navn: Liqun Jiao
- Telefonnummer: 010-83198277
- E-post: 13911224991@139.com
Studiesteder
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-
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Beijing, Kina
- Xuanwu Hospital
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Ta kontakt med:
- Liqun Jiao
- Telefonnummer: 010-83198277
- E-post: 13911224991@139.com
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
General Inclusion Criteria (all must be satisfied):
- Age ≥18 years, either sex.
- 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.
- 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.
- Reference vessel diameter at the target lesion ranges from 3.5 mm to 9.5 mm.
- 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:
- Age >80 years.
- Low cardiac output [left ventricular ejection fraction (LVEF) <30%].
- Untreated or poorly controlled arrhythmia (recurrent despite standard medical therapy or other treatment).
- Cardiac insufficiency (New York Heart Association Class III-IV).
- Recent myocardial infarction (occurring between 72 hours and 30 days prior to the procedure).
- Unstable angina (Canadian Cardiovascular Society Class 3-4).
- Severe chronic obstructive pulmonary disease (COPD), defined as forced expiratory volume in 1 second (FEV1) <50% of predicted value.
Anatomic High-Risk Factors:
- Restenosis after prior carotid endarterectomy (CEA).
- Contralateral carotid artery occlusion.
- Tandem carotid artery lesions.
- Carotid artery dissection.
- Pseudoaneurysm.
Exclusion Criteria:
- Target lesion caused by carotid arteritis.
- Target lesion located at the ostium of the common carotid artery.
- Severe, long-segment calcification or severe tortuosity at the target lesion preventing adequate stent delivery.
- Target lesion is a complete occlusion.
- Presence of large acute or subacute thrombus, or arteriovenous malformation adjacent to the target lesion.
- Requirement for concurrent stenting or stenting in other territories (intracranial or extracranial) within 30 days after the procedure.
- Intracranial hemorrhage within 3 months prior to the procedure.
- Large-scale ischemic stroke within 30 days prior to the procedure.
- Known intracranial aneurysm that cannot be treated in advance.
- Known coagulation disorder (activated partial thromboplastin time [APTT] >3 times the upper limit of normal) or abnormal bleeding diathesis.
- Known contraindication to heparin or antiplatelet agents.
- Known allergy to device components, contrast agent, or related materials.
- 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).
- Uncontrolled severe hypertension (persistent systolic blood pressure ≥180 mmHg or diastolic blood pressure ≥110 mmHg).
- Preoperative bradycardia (heart rate <40 beats per minute).
- Preoperative modified Rankin Scale (mRS) score ≥3.
- Malignant tumor with extensive metastasis.
- Currently participating in another drug or device clinical trial.
- Pregnant or lactating women, or women planning pregnancy within 1 year.
- Any other condition that, in the investigator's judgment, makes the subject unsuitable for participation in this trial.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Antall våpen
Våpen og intervensjoner
Deltakergruppe / ArmDeltakergruppe / Arm |
Intervensjon / BehandlingIntervensjon / Behandling |
|---|---|
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Eksperimentell: Carotid Artery Stent System
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All participants will undergo carotid artery stenting (CAS). |
Hva måler studien?
Primære resultatmål
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
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
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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
|
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Incidence of In-Stent Restenosis (ISR)
Tidsramme: 6 months
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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
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Incidence of Target Lesion Revascularization (TLR)
Tidsramme: 30 days,6 months,12 months
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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
|
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Incidence of Ipsilateral Ischemic Stroke
Tidsramme: 6 months,12 months
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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
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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
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|
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Incidence of Device Deficiencies
Tidsramme: through study completion, an average of 1 year
|
through study completion, an average of 1 year
|
Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Samarbeidspartnere
Samarbeidspartnere
Studierekorddatoer
Studer hoveddatoer
Studiestart (Antatt)
Studiestart
Primær fullføring (Antatt)
Primær fullføring
Studiet fullført (Antatt)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
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Ytterligere relevante MeSH-vilkår
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