Method and apparatus for control of cardiac therapy using non-invasive hemodynamic sensor
AssigneeCardiac Pacemakers, Inc.
InventorsAndrew P. Kramer, Joseph M. Pastore, Jeffrey E. Stahmann, Rodney W. Salo, Jesse W. Hartley
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Abstract
A cardiac rhythm management (CRM) system includes a non-invasive hemodynamic sensing device and an implantable medical device to sense a hemodynamic signal and derive one or more cardiac performance parameters from the hemodynamic signal. The non-invasive hemodynamic sensing device includes at least a portion configured for external attachment to a body in which the implantable medical device is implanted. The one or more cardiac performance parameters are used for various diagnostic, monitoring, and therapy control purposes.
Claims37
A system coupled to a body having external appendages, the system comprising:
- a non-invasive hemodynamic sensing device including at least a portion configured to be attached to one of the external appendages, the non-invasive hemodynamic sensing device including:
- a hemodynamic sensor to sense a hemodynamic signal allowing for determination of a pulse pressure;
- a sensor signal processor to produce hemodynamic data representative of the hemodynamic signal;
- and
- a sensor telemetry circuit to transmit the hemodynamic data from the non-invasive hemodynamic sensing device;
- and
- an implantable medical device communicatively coupled to the non-invasive hemodynamic sensing device, the implantable medical device including:
- an implant telemetry circuit to receive the hemodynamic data from the non-invasive hemodynamic sensing device;
- an electrical stimulation circuit to deliver electrical stimulation;
- an implant signal processor adapted to process the hemodynamic data, the implant signal processor including a parameter generator adapted to produce one or more cardiac performance parameters using the hemodynamic data, the one or more cardiac performance parameters including at least a pulse pressure parameter representative of the pulse pressure;
- and
- a stimulation controller adapted to control the delivery of the electrical stimulation using one or more stimulation parameters, the stimulation controller including a stimulation parameter adjustment module adapted to adjust the one or more stimulation parameters using the one or more cardiac performance parameters.
A method for delivering electrical stimulation to a body having external appendages, the method comprising:
- sensing a hemodynamic signal using a non-invasive hemodynamic sensor attached to one of the external appendages of the body, the hemodynamic signal allowing for determination of a pulse pressure;
- producing hemodynamic data representative of the hemodynamic signal;
- transmitting the hemodynamic data to an implantable medical device through a wireless communication link;
- producing one or more cardiac performance parameters using the hemodynamic data using a signal processor of the implantable medical device, the one or more cardiac performance parameters including at least a pulse pressure parameter representative of the pulse pressure;
- adjusting one or more stimulation parameters using the one or more cardiac performance parameters using a stimulation controller of the implantable medical device;
- controlling the delivery of the electrical stimulation using the one or more stimulation parameters;
- and
- delivering the electrical stimulation from the implantable medical device.
Dependencies are inferred from the claim text.