This study is enrolling subjects with coronary artery disease (blockages in the arteries that supply blood to the heart) who need to undergo a procedure called a Percutaneous Coronary Intervention (PCI) to open up a blocked heart artery. At times, a heart pump is used during a PCI to help reduce the work the heart during the procedure. This study is evaluating a heart pump called the KARDION CORY P4 pump. The KARDION CORY P4 pump is investigational meaning it has not been approved for commercial use by the Food and Drug Administration (FDA). This study will randomize subjects, meaning assign by chance, to receive either the KARDION CORY P4 pump or the Impella CP, which is commercially available.

Study participation will last about 30 days and include up to 6 visits. The study includes blood work, questionnaires, an electrocardiogram (ECG) - a tracing of the heart's electrical activity and an echocardiogram (Echo) - an ultrasound test of the heart.

Risks include risks related to the study device including bleeding, infection, and injury to the blood vessel where the device is placed. There are also risks related to study procedures. There may be benefit and the information learned may benefit others in the future.