ClinicalTrials.gg
TerminatedNCT05755412LEGACYUpdated Mar 25, 2026

Shockwave ®S4 Catheter IVL to Treat Infrapopliteal Calcified Stenoses and/or Occlusions in CLTI Patients (LEGACY)

An observational study in Peripheral Arterial Disease and Critical Limb-Threatening Ischaemia, sponsored by EndoCore Lab s.r.l.. Terminated at 6 sites in Italy. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-03-25.

Sponsored by EndoCore Lab s.r.l. · Observational

Why this study was terminated
Low Enrollment rate: The study targeted a highly selected and complex patient population, making the identification and enrollment of eligible patients particularly challenging for all participating centers
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
9
Ages
18 Years and older
Sex
All
01

Study summary

The study will evaluate the safety and efficacy of Peripheral Intravascular Lithotripsy system with Shockwave S4 catheter® for the treatment of de novo, re-stenosis or re-occlusive,calcified chronic total occlusion (CTOs) lesions in patients with Critical Limb Threatening Ischemia (CLTI).

Read the detailed description

The present study is designed as a multicentre, prospective, single-arm, observational study.

All eligible subjects for undergoing intervention with Shockwave S4 catheter® Peripheral Intravascular Lithotripsy (IVL) at sites participating in the study will be considered for enrolment and will be asked to give consent prior to participating.

Subjects will be considered enrolled in the study at the time written informed consent is given to the use of their personal data. Once patients are enrolled, their demographics, medical history, disease-relevant conditions, treatment details and outcomes will be collected for up to 12 months from the procedure.

The study will collect information about the medical care patients receive during their planned procedure. No additional testing or procedures will be done.

The procedure with Shockwave S4 catheter® Peripheral Intravascular Lithotripsy (IVL) will be performed as per the current instructions for use.

After discharge all patients will attend clinic visits at 30 days (±14 days), 6 months (±30 days),12 months (±30 days).

02

Conditions studied

  • Peripheral Arterial Disease
  • Critical Limb-Threatening Ischaemia

Keywords

  • PAD
  • CLTI
03

In context

Peripheral Arterial Disease

1,377 studies on the registry are indexed under Peripheral Arterial Disease; 275 are open to participants now.

This study's enrollment of 9 is below the median of 188 across 398 observational studies indexed under Peripheral Arterial Disease.

Browse Peripheral Arterial Disease studies →

Lead sponsor

EndoCore Lab s.r.l. is the lead sponsor of 4 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients affected by lower extremities artery disease and referred for the endovascular treatment of infrapopliteal calcified stenoses and/or occlusions in patients with critical limb ischaemia

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age ≥18 years
  • Patient has signed an approved form
  • Patient with Critical Limb Ischaemia, Rutherford category 4 (ischaemic rest pain), 5(minor tissue loss) or 6 (major tissue loss)
  • Patient with Stenotic (>50% luminal loss) or occluded infrapopliteal artery, including the tibiofibular trunk, the anterior tibial artery, the posterior tibial artery and the peroneal artery
  • The vascular lesion length will be no longer than 150 mm.
  • Patient with no significant disease at the inflow: common iliac, external iliac, superficial femoral and popliteal artery on the ipsilateral side prior to enrollment, and patient with no significant disease at the outflow - runoff to ankle level: plantar for posterior tibial, pedal for anterior tibial, anterior and posterior perforant branches for peroneal vessels or previous successful revascularization of the disease segments (inflow-outflow)
  • Live expectancy > 1 year.
  • Presence at least ≥1 filling pedal vessel on the target limb.

Exclusion criteria

Exclusion Criteria:

  • Subject pregnant or planning to become pregnant during the study
  • Subject no able to perform the follow up or other factors making clinical follow-up difficult
  • Acute or Subacute limb ischaemia which requires thrombolysis as first treatment modality or previous thrombolytic therapy in the last 48-72 hours.
  • Known allergy to concomitant medication, antiplatelet anti-coagulant or thrombolytic medication
  • Poor inflow due to ipsilateral stenoses or occlusions of the iliac or femoropopliteal arteries
  • Significant stenoses (> 50%) distal to the target lesion that might require revascularization or impede run-off
  • Desert foot condition. No Patent foot main arteries
  • Subject enrolled in another study that has not reached its primary endpoint
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
9 participants (actual)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Composite of Acute Gain Index and freedom from clinically driven target lesion revascularization (CD-TLR) through 6 months post procedure

    Acute Gain Index defined as the Acute Gain (difference between the vessel diameter before and after IVL) divided by the Reference Vessel Diameter CD-TLR defined as as repeat percutaneous intervention or surgical bypass graft to treat an angiographic significant restenosis (\>50%) at the level of the treated lesion ±10 mm (proximally and/or distally) in the presence of at least 1 of the following criteria: * recurrence of pain in the foot at rest that increases in the supine position * recurrence of pedal ulceration, evidence of halted healing * appearance of a new foot lesion * target vessel occlusion (by either angiography or DUS).

    Time frame: 30 days, 6 months

Secondary outcomes

  1. Composite of Freedom from device and procedure-related death and freedom from target limb major amputation and clinically-driven and mechanical target lesion revascularization (CD-MTLR)

    Composite of Freedom from device and procedure-related death through 30 days post-procedure and freedom from target limb major amputation and clinically-driven and mechanical target lesion revascularization (CD-MTLR) through 6 months post-procedure

    Time frame: 30 days, 6 months

  2. Late Lumen Loss Index

    Late Lumen Loss defined as Late Lumen Loss divided by Acute Lumen Gain

    Time frame: 6 months

  3. Rutherford class shift

    Assess clinical improvement based on Rutherford class changes at 1, 6, 12 months, compared to baseline

    Time frame: Baseline, 30 days, 6 months, 12 months

  4. Amputation rate

    defined as rate of minor and major amputations

    Time frame: 30 days, 6 months, 12 months

  5. CD-TLR

    Clinically-driven target lesion revascularization (CD-TLR) is defined as any reintervention within the target lesion due to symptoms

    Time frame: 30 days, 6 months

  6. Technical success

    Technical success, defined as achievement of a final in-lesion residual diameter stenosis of ≤50% (as determined by the angiographic core lab), using the Shockwave S4 catheter, without a device malfunction after wire passage through the lesion.

    Time frame: Day 1

  7. Clinical Success

    Clinical success (per subject) defined as technical success without the occurrence of major adverse events during the procedures (as determined by the angiographic core lab)

    Time frame: Day 1

  8. Procedural Success

    Procedural success defined as lesion success without the occurrence of major adverse events during the procedure

    Time frame: Day 1

  9. Ankle-brachial index (ABI) or trans-cutaneous oximetry (TcPO2) improvements

    Assess ABI or TcPO2 improvements

    Time frame: Baseline,30 days, 6 months, 12 months

  10. Major adverse event (MAE) rates

    Major adverse event (MAE) rates, defined as the first occurrence of any of the following: death from any cause, major amputation (above-the-ankle) of the target limb and target lesion revascularization (TLR), through 12 months

    Time frame: 30 days, 6 months, 12 months

07

Study locations

6 sites
  • I.R.C.C.S. MultiMedica
    Sesto San Giovanni, Milano 20099, Italy
  • Casa di Cura Abano Terme
    Abano Terme, Padova 35031, Italy
  • Ospedale Pederzoli
    Peschiera del Garda, Veneto 37019, Italy
  • IRCCS - Azienda Ospedaliera-Universitaria di Bologna, Policlinico di Sant'Orsola
    Bologna, 40138, Italy
  • Ospedale "Morgagni di Forlì
    Forlì, 47121, Italy
  • Azienda Sanitaria Universitaria ed Integrata Santa Maria della Misericordia Udine (ASU FC)
    Udine, 33100, Italy
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 25, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05755412
Lead sponsor
EndoCore Lab s.r.l.
Collaborators
Fondazione Italiana Vascolare
Responsible party
Sponsor
First posted
Mar 6, 2023
Start date
Mar 14, 2023
Primary completion
Aug 30, 2024
Completion
Aug 30, 2025
Last update
Mar 25, 2026

Study contacts

Mariano L Palena, MD
principal investigator · Casa di Cura Abano Terme
Pierluigi Antignani, MD
study chair · Fondazione Vascolare Italiana
Gabriele Morselli, PharmD
study director · EndoCoreLab s.r.l.
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.

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