Method and apparatus for control of cardiac therapy using non-invasive hemodynamic sensor
First Claim
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1. 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.
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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.
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Citations
37 Claims
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1. A system coupled to a body having external appendages, the system comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for delivering electrical stimulation to a body having external appendages, the method comprising:
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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. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification