IN.PACT™ AV Access IDE Study

Inclusion Criteria: 1. Patient is ≥21 years of age. 2. Patient has a life expectancy of ≥ 12 months 3. Patient has a native AV fistula created ≥ 60 days prior to the index procedure 4. The target AV fistula has undergone successful dialysis for at least 8 of 12 sessions during a four week period 5. Patient has a de novo and/or non-stented restenotic lesion located between the arteriovenous anastomosis and axillosubclavian junction with ≥50% stenosis. Note: If the lesion is located in the anastomosis, the treatment may be delivered up to 2 cm upstream on the arterial side. If the lesion is located in the cephalic arch, the treatment may be delivered up to 2 cm into the subclavian vein 6. Patient has a target lesion or a tandem lesion that is ≤ 100 mm in length (by visual estimate) Note: Tandem lesions may be enrolled provided they meet all of the following criteria: Separated by a gap of ≤ 30mm (3 cm), total combined lesion length, including 30 mm gap, ≤ 100 mm, and able to be treated as a single lesion 7. Patient has a target vessel diameter of 4.0 - 12.0 mm (by visual estimate). 8. Patient underwent successful crossing of the target lesion with the guide wire and pre-dilatation with a high pressure PTA balloon defined as: residual stenosis of ≤ 30% and absence of a flow limiting dissection (Grade ≥ C) or perforation 9. Patient provides written consent prior to enrollment in the study 10. Patient is willing to comply with all follow-up evaluations at specified times Exclusion Criteria: 1. Women who are breastfeeding, pregnant, or are intending to become pregnant, or men intending to father children 2. Patient is receiving immunosuppressive therapy 3. Patient is anticipating a kidney transplant within 6 months of enrollment into the study 4. Patient has undergone prior intervention of access site within 30 days of index procedure 5. Patient with anticipated conversion to peritoneal dialysis 6. Patient has an infected AV access or systemic infection 7. Patient has planned surgical revision of access site 8. Patient with secondary non-target lesion requiring treatment within 30-days post index procedure 9. Patient with hemodynamically significant central venous stenoses that cannot be successfully treated prior to treatment of the target lesion 10. Patient with target AVF or access circuit which previously had or currently has a thrombosis 11. Patients judged to have a lesion that prevents complete inflation of an angioplasty balloon or proper placement of the delivery system 12. Patient with target lesion located central to the axillosubclavian junction 13. Patient has significant arterial inflow lesion requiring treatment more than 2 cm upstream from the anastomosis in the AV access 14. Patient has presence of pseudoaneurysm or aneurysm requiring treatment at the lesion site 15. Patient has presence of a stent located in the target AV access circuit 16. Patients with known allergies or sensitivities to paclitaxel 17. Patient with known contraindication, including allergic reaction, or sensitivity to contrast material that cannot be adequately pre-treated 18. Patient who cannot receive recommended antiplatelet and/or anticoagulant therapy 19. Patient with clinically significant Steal Syndrome requiring treatment 20. Patient is enrolled in another investigational drug, device, or biological study and has not completed the primary endpoint, or was previously enrolled in this study 21. Patient has a comorbid-condition that, in the judgment of the Investigator, may cause him/her to be non-compliant with the protocol of confound data interpretation