Initial Study of a MOTHER-DAUGHTER SIDE-BRANCH ACCESS™ DES System (FIH Feasibility Study)

Inclusion Criteria: Be 21 years of age or older. Have symptomatic ischemic heart disease or objective evidence of reduced blood flow to the heart. Be eligible for PCI, also known as coronary stenting. Have a new coronary artery narrowing involving a branch point that meets the study's angiographic requirements. Be willing and able to complete study follow-up. Be able to provide written informed consent. If able to become pregnant, have a negative pregnancy test before the procedure and agree not to become pregnant or breastfeed for 1 year. Exclusion Criteria: Are currently participating in another investigational drug or device study that could interfere with this study. Had a coronary intervention within 30 days before the planned study procedure. Need a planned additional coronary procedure soon after the study procedure. Had a prior stent placed close to the target lesion. Have a target lesion that requires certain other treatment devices before stent placement, other than balloon angioplasty or intravascular lithotripsy. Have a serious medical condition that could limit participation, follow-up, or interpretation of the study results. Have a life expectancy of less than 3 years. Have a condition requiring chronic immunosuppressive therapy or have a severe autoimmune or immunosuppressive condition. Have significantly reduced heart pumping function. Had a recent acute heart attack, unless certain laboratory values have returned to acceptable levels. Had a stroke or transient ischemic attack within the past 6 months. Have certain abnormal blood test results, including low white blood cell count, low neutrophil count, low platelet count, or significantly reduced kidney function. Have active stomach or intestinal bleeding, active peptic ulcer disease, a bleeding disorder, or cannot receive blood transfusions. Have a known allergy or contraindication to required medications, contrast dye, or study device materials that cannot be adequately managed. Are pregnant, breastfeeding, or planning to become pregnant within 1 year after the study procedure. Have coronary anatomy that is not suitable for the study device, as determined during coronary angiography (This may include blood clot in the target lesion, severe vessel tortuosity, severe calcification, certain lesion locations, or other significant disease in the target vessel). Are unable or unwilling, in the opinion of the study doctor, to comply with the study requirements.