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AssigneePacesetter, Inc.
InventorsRichard Lu, David W. Adinolfi
Estimating the term…
An implantable cardiac stimulation system is disclosed which automatically optimizes its ability to rate-responsively pace by enabling calibration when the patient is at rest and has a functioning lead. Devices which employ physiologic sensors are based on a baseline value of the sensor signal corresponding to the resting state. Accordingly, the control system determines if the patient is at rest using a suitable sensor and also determines if the lead impedance is within normal values, i.e. functional and intact. If these conditions are met, the control system stores the current baseline of the sensor at rest and proceeds with normal sensing and stimulation commands until the next calibration is performed. In addition, the system can automatically calibrate a sleep value for the physiologic sensor using a sensor which can detect the sleep state. While the preferred embodiment discloses a minute ventilation sensor, other closed-loop sensors are contemplated, including at least paced depolarization integral (PDI), QT interval and pre-ejection interval (PEP).
An implantable rate-responsive cardiac stimulation device for stimulating a patient's heart, the device being adapted to connect to at least one implantable lead, comprising:
An implantable rate-responsive cardiac stimulation device for stimulating a patient's heart, the device being adapted to connect to at least one implantable lead, comprising:
In an implantable rate-responsive cardiac stimulation device having a pulse generator adapted to deliver stimulation pulses via an implantable lead to a patient's heart, a method comprising the steps of:
Dependencies are inferred from the claim text.