Devices, systems and methods for endocardial pressure measurement

A blood pressure measuring system for measuring blood pressure in a heart of a patient, comprising:

• an implantable pressure transducer assembly;
• an implantable telemetry unit connected to the pressure transducer assembly via an electrical lead;
• a local data collection system in communication with the implantable telemetry unit via a wireless link;
• and
• a remote data collection system in communication with the local data collection system via a telecommunication system.

A method of diagnosing or monitoring congestive heart failure (CHF) or an underlying cause thereof, comprising the steps of:

• providing an implantable device comprising a telemetry unit connected to a pressure transducer connected to a catheter;
• implanting the device such that the catheter extends across a heart wall, with a distal end of the catheter disposed in a chamber of the heart and the pressure transducer connected to the heart wall outside the chamber;
• and
• monitoring blood pressure in the heart chamber using the implantable device.

A method of diagnosing or monitoring congestive heart failure in a patient comprising:

• placing a fluid filled catheter across the myocardium of the patient;
• coupling said fluid to an implanted pressure transducer mounted on the myocardium:
• telemetering data from the pressure transducer to a remote location outside the body of the patient;
• maintaining a data base of telemetered data over time to develop data trends for the patient;
• displaying the data to a physician for diagnostic purposes.