Understanding Angioplasty by the Chocolate PTA Balloon Catheter Compared to Conventional PTA Balloons Via OCT Imaging

Subjects will be randomized to treatment with either the Chocolate Balloon catheter or a
standard balloon angioplasty catheter. All angioplasty procedures will be conducted with
treatment balloon at the full discretion of the physician and according to the standard
practice at the hospital and the device Instructions for Use. All patients will undergo
baseline OCT imaging in addition to standard angiography. Post-PTA, all patients will then
undergo repeat OCT imaging immediately post-procedure and then again at 10-minutes
post-procedure to assess for vascular recoil.

Inclusion Criteria:

- Reference Vessel Diameter (RVD) between 2.5 and 6.0mm and within treatment range
of available balloon at Target Lesion

- Intermittent claudication or critical limb ischemia (Rutherford 3-5)

- De novo stenosis (≥70%) or occlusion in the infrainguinal arteries, including
superficial femoral artery (SFA), popliteal, and infrapopliteal arteries.

- Lesion successfully crossed with a guide-wire

- Patient has given informed consent to participate in this study

Exclusion Criteria:

- Lesion requiring ablative procedures (i.e. atherectomy or laser) as part of treatment

- Lesion length >75mm

- Previous bypass or stent at target vessel or proximal to target vessel

- Significant in-flow disease at target lesion

- Known inadequate distal outflow disease or planned treatment of vessel distal to
target lesion

- Acute limb ischemia or need for thrombolytic therapy

- Known intolerance to required study medications, contrast media, or nitinol

- Known impaired Renal Function with Glomerular Filtration Rate (GFR) <45 ml/min per
1.73m2

- Known bleeding disorder or uncontrolled hypercoagulable disorder.