ONYXNG35038JX

Onyx Frontier™ drug-eluting stent on a transparent background

Indications, Safety, and WarningsMRI Safety InformationStent delivery system updates were implemented on the 2.0 mm to 4.0 mm Onyx Frontier™ DES diameters.IndicationsThe Onyx Frontier™ zotarolimus-eluting coronary stent system is indicated for improving coronary luminal diameters in patients, including those with diabetes mellitus or high bleeding risk, with symptomatic ischemic heart disease due to de novo lesions of length ≤ 35 mm in native coronary arteries with reference vessel diameters of 2.0 mm to 5.0 mm. In addition, the Onyx Frontier™ zotarolimus-eluting coronary stent system is indicated for treating de novo chronic total occlusions and non-left main bifurcation lesions using the provisional bifurcation stenting technique.ContraindicationsThe Onyx Frontier™ system is contraindicated for use in:

Patients with a known hypersensitivity or allergies to aspirin, heparin, bivalirudin, clopidogrel, prasugrel, ticagrelor, ticlopidine, drugs such as zotarolimus, tacrolimus, sirolimus, everolimus, or similar drugs or any other analogue or derivative

Patients with a known hypersensitivity to the cobalt-based alloy (cobalt, nickel, chromium, and molybdenum) or platinum-iridium alloy

Patients with a known hypersensitivity to the BioLinx™ polymer or its individual components.

Coronary artery stenting is contraindicated for use in:

Patients in whom antiplatelet and/or anticoagulation therapy is contraindicated

Patients who are judged to have a lesion that prevents complete inflation of an angioplasty balloon or proper placement of the stent or stent delivery system

Warnings

Ensure that the inner package has not been opened or damaged as this would indicate the sterile barrier has been breached.

The use of this product carries the same risks associated with coronary artery stent implantation procedures, which include subacute and late vessel thrombosis, vascular complications, and bleeding events.

This product should not be used in patients who are not likely to comply with the recommended antiplatelet therapy.

Precautions

Only physicians who have received adequate training should perform implantation of the stent.

Subsequent stent restenosis or occlusion may require repeat catheter-based treatments (including balloon dilatation) of the arterial segment containing the stent. The long-term outcome following repeat catheter-based treatments of previously implanted stents is not well characterized.

The risks and benefits of the stent implantation should be assessed for patients with a history of severe reaction to contrast agents.

Do not expose or wipe the product with organic solvents such as alcohol.

The use of a drug-eluting stent (DES) outside of the labeled indications, including use in patients with more tortuous anatomy, may have an increased risk of adverse events, including stent thrombosis, stent embolization, myocardial infarction (MI), or death.

Care should be taken to control the position of the guide catheter tip during stent delivery, stent deployment, and balloon withdrawal. Before withdrawing the stent delivery system, confirm complete balloon deflation using fluoroscopy to avoid arterial damage caused by guiding catheter movement into the vessel.

Stent thrombosis is a low-frequency event that is frequently associated with MI or death. Data from the RESOLUTE clinical trials have been prospectively evaluated and adjudicated using the definition developed by the Academic Research Consortium (ARC).

The safety and effectiveness of the stent have not yet been established in the following patient populations:

Patients with target lesions that were treated with prior brachytherapy or the use of brachytherapy to treat in-stent restenosis of the stent

Women who are pregnant or lactating

Men intending to father children

Pediatric patients below the age of 18 years

Patients with coronary artery reference vessel diameters of <2.0 mm or >5.0 mm

Patients with evidence of an acute ST-elevation MI within 72 hours of intended stent implantation

Patients with vessel thrombus at the lesion site

Patients with lesions located in a saphenous vein graft, in the left main coronary artery, or ostial lesions

Patients with diffuse disease or poor flow distal to identified lesions

Patients with three-vessel disease (3VD)

The safety and effectiveness of the stent have not been established in the cerebral, carotid, or peripheral vasculature. Additionally, the safety and effectiveness of using atherectomy devices with the stent have not been established. The effect of potential drug interactions on the safety or effectiveness of the Onyx Frontier™ stent has not been investigated. Potential interactions of the stent with other drug-eluting or coated stents have not been evaluated and should be avoided whenever possible.Clinical studies of the Resolute™ stent did not suggest any significant differences in safety and effectiveness for male and female patients and did not include sufficient numbers of patients to assess for differences in safety and effectiveness due to ethnicity.Oral antiplatelet therapyDual antiplatelet therapy (DAPT) using a combination treatment of aspirin with a P2Y12 platelet inhibitor after percutaneous coronary intervention (PCI), reduces the risk of stent thrombosis and ischemic cardiac events, but increases the risk of bleeding complications. The optimal duration of DAPT (specifically a P2Y12 platelet inhibitor in addition to aspirin) following DES implantation is unknown, and DES thrombosis may still occur despite continued therapy. It is very important that the patient is compliant with the post-procedural antiplatelet recommendations.Per 2016 ACC/AHA guidelines,¹ a daily aspirin dose of 81 mg is recommended indefinitely after PCI. A P2Y12 platelet inhibitor should be given daily for at least 6 months in stable ischemic heart disease patients and for at least 12 months in patients with acute coronary syndrome (ACS). Consistent with the DAPT Study,² and the 2016 ACC/AHA guidelines, longer duration of DAPT may be considered in patients at higher ischemic risk with lower bleeding risk. The Academic Research Consortium (ARC) proposed a standardized definition for identifying patients at high bleeding risk (HBR).³ Additionally, evidence from a dedicated study of Resolute Onyx™ in HBR patients and those who are unable to tolerate long term DAPT after PCI has been published.⁴Based on the Onyx ONE Clear Analysis, the Resolute Onyx™ stent is safe and effective in patients at high risk of bleeding treated with one month of DAPT. The patients evaluated in the Onyx ONE Clear Analysis met the pre-defined criteria for high bleeding risk and were those whom in the opinion of their physician, the potential benefit of 1-month DAPT outweighed the potential risk. In addition to at least one HBR risk factor, enrollment included 48.6% ACS patients (unstable angina 22.8%, non-STEMI 21.7% and STEMI 4.2%). Decisions about duration of DAPT are best made on an individual basis and should integrate clinical judgment, assessment of the benefit/risk ratio, and patient preference. Premature discontinuation or interruption of prescribed antiplatelet medication could result in a higher risk of stent thrombosis, MI, or death. Before PCI, if premature discontinuation of antiplatelet therapy is anticipated, physicians should carefully evaluate with the patient whether a DES and its associated recommended DAPT regimen is the appropriate PCI choice.Following PCI, if elective noncardiac surgery requiring suspension of antiplatelet therapy is considered, the risks and benefits of the procedure should be weighed against the possible risk associated with interruption of antiplatelet therapy. Patients who require premature DAPT discontinuation should be carefully monitored for cardiac events. At the discretion of the patient’s treating physician(s), the antiplatelet therapy should be restarted as soon as possible.Instructions for stenting of bifurcation lesionsThe provisional technique of bifurcation stenting recommends a single stent placement in the main vessel (MV), finalized with proximal optimization technique (POT). POT includes performing post-dilatation to achieve full apposition of the stent proximal to the bifurcation and reduce the risk of side branch (SB) compromise. If inadequate results are found in the SB such as: threatened SB closure, TIMI flow <3, dissection type B or worse, or residual stenosis >80%, the provisional bifurcation stenting technique recommends placing a second stent in the SB as a bailout. As per cardiology societal recommendations, two-stent techniques following single stent provisional bifurcation stenting including T, TAP, and culotte stenting may be utilized as needed. However, the RESOLUTE ONYX PAS Bifurcation Cohort did not evaluate the safety and effectiveness of two-stent bifurcation techniques, including planned (upfront) two-stent bifurcation techniques (such as DK-crush). Additionally, two-stent bifurcation techniques may introduce additional forces and/or failure modes to the stents, and the performance of the Resolute Onyx™ stent has not been evaluated under these conditions in nonclinical testing.Potential adverse eventsOther risks associated with using this device are those associated with percutaneous coronary diagnostic (including angiography and IVUS) and treatment procedures. These risks (in alphabetical order) may include but are not limited to:

Abrupt vessel closure

Access site pain, hematoma, or hemorrhage

Allergic reaction (to contrast, antiplatelet therapy, stent material, or drug and polymer coating)

Aneurysm, pseudoaneurysm, or arteriovenous fistula (AVF)

Arrhythmias, including ventricular fibrillation

Balloon rupture

Bleeding

Cardiac tamponade

Coronary artery occlusion, perforation, rupture, or dissection

Coronary artery spasm

Death

Embolism (air, tissue, device, or thrombus)

Emergency surgery: peripheral vascular or coronary bypass

Failure to deliver the stent

Hemorrhage requiring transfusion

Hypotension/hypertension

Incomplete stent apposition

Infection or fever

Myocardial infarction (heart attack)

Pericarditis

Peripheral ischemia/peripheral nerve injury

Renal failure

Restenosis of the stented artery

Shock/pulmonary edema

Stable or unstable angina

Stent deformation, collapse, or fracture

Stent migration or embolization

Stent misplacement

Stroke/transient ischemic attack

Thrombosis (acute, subacute, or late)

Adverse events related to zotarolimusPatients’ exposure to zotarolimus is directly related to the total amount of stent length implanted. The actual side effects/complications that may be associated with the use of zotarolimus are not fully known. The adverse events that have been associated with the intravenous injection of zotarolimus in humans include but are not limited to:

Anemia

Diarrhea

Dry skin

Headache

Hematuria

Infection

Injection site reaction

Pain (abdominal, arthralgia, injection site)

Rash

The potential adverse reactions in nursing infants from zotarolimus have not been determined. The pharmacokinetic and safety profiles of zotarolimus in infants are not known.Adverse events related to BioLinx™ polymerAlthough the type of risks of the BioLinx™ polymer coating are expected to be no different than those of other stent coatings, the potential for these risks are currently unknown as the coating has limited previous use in humans. These risks may include but are not limited to the following:

Allergic reaction

Focal inflammation at the site of stent implantation

Restenosis of the stented artery

Please reference appropriate product instructions for use for more information regarding indications, contraindications, warnings, precautions, and potential adverse events.Caution: Federal law (United States) restricts this device to sale by or on the order of a physician.

Levine GN, Bates ER, Bittl JA, et al. 2016 ACC/AHA guideline focused update on duration of dual antiplatelet therapy in patients with coronary artery disease: a report of the American College of Cardiology/American Heart Association Task Force on clinical practice guidelines. J Am Coll Cardiol. 2016;68(10):1082–1115.

Mauri L, Kereiakes DJ, Yeh RW, et al. Twelve or 30 months of dual antiplatelet therapy after drug-eluting stents. N Engl J Med. 2014;371(23):2155–2166.

Urban P, Mehran R, Colleran R, et al. Defining high bleeding risk in patients undergoing percutaneous coronary intervention. Circulation. 2019;140(3):240–261.

Windecker S, Latib A, Kedhi E, et al. Polymer-based or polymer-free stents in patients at high bleeding risk. N Engl J Med. 2020;382(13):1208–1218.

Nonclinical testing has demonstrated that the Onyx Frontier™ stent is MR Conditional for single and overlapping lengths up to 120 mm. A person with the Onyx Frontier™ DES implant may be safely scanned under the conditions found in the Onyx Frontier™ DES instructions for use. Failure to follow these conditions may result in injury.

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