Evaluate the Performance and Safety of Comet Pressure Guidewire in the Measurement of FFR

A Prospective, Multicenter Study to Evaluate the Performance and Safety of CometTM Pressure Guidewire in the Measurement of FFR in Chinese Patients

A prospective, open-label, multi-center study designed to validate the agreement of CometTM Pressure Guidewire and Pressure Wire Certus® in FFR measurements

The COMET China study is a prospective, open-label, multi-center study designed to validate the agreement of CometTM Pressure Guidewire and Pressure Wire Certus® in FFR measurements. Patient with stable angina or any form of non-ST elevation acute coronary syndrome, who are scheduled for diagnostic angiography and pressure wire assessment, and signed the informed consent, will be screened for enrollment in this study.

General Inclusion Criteria:

1. Patient must be at least 18 years old and less than or equal to 75 years of age
2. Patient or his/her legally-authorized representative agrees to sign the EC-approved ICF prior to the procedure
3. Patient with stable angina or any form of non-ST elevation acute coronary syndrome and is clinically indicated of intra-coronary diagnostic angiography and FFR assessment

Angiographic Inclusion Criteria:

Moderate stenosis (30% to 70% diameter stenosis by visual estimation) is detected at diagnostic angiography

General Exclusion Criteria:

1. Patients unable to provide informed consent
2. Patients in pregnant state
3. Known renal insufficiency or failure (serum creatinine level of > 2.5 mg/dL, or on dialysis)
4. Allergy to the contrast
5. Significant arrhythmia, such as II degree or above of atrioventricular block, Sick sinus syndrome, ventricular tachycardia
6. Spastic bronchial asthma
7. ST elevation coronary syndrome
8. Hemodynamic instability
9. Contraindication to nitroglycerin or ATP
10. Current participation in another investigational drug or device clinical study that may affect the FFR measurements

Angiographic Exclusion Criteria:

CTO lesion Severe vessel tortuosity at the stenotic segments Culprit vessel of non-ST-segment elevation acute myocardial infarction