Systems and methods for detecting cerebrospinal-fluid pulsation using an implantable electrical stimulation device
First Claim
1. An electrical stimulation lead assembly, comprising:
- at least one lead body having a distal end portion, a proximal end portion, and a longitudinal length;
a plurality of electrodes disposed along the distal end portion of the at least one lead body;
a plurality of terminals disposed along the proximal end portion of the at least one lead body;
a plurality of stimulation conductors coupling the plurality of terminals to the plurality of electrodes; and
a cerebrospinal-fluid-pulsation detection assembly (“
CSF-pulsation detection assembly”
) comprisingat least one sensor disposed along the distal end portion of the at least one lead body, the at least one sensor configured and arranged for detecting pulses of cerebrospinal fluid within a subarachnoid space of a patient and transforming the detected pulses of cerebrospinal fluid into sensor signals,a sensor processor for receiving the sensor signals from the at least one sensor, processing the received sensor signals to generate cerebrospinal-fluid pulsation data (“
CSF-pulsation data”
) comprising at least one of amplitude, duration, or rate of cerebrospinal-fluid pulses, and estimating at least one patient blood-flow condition based on the CSF-pulsation data, andat least one sensor control pathway coupling the at least one sensor to the sensor processor.
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Accused Products
Abstract
An electrical stimulation lead assembly includes a lead body having a distal end portion, a proximal end portion, and a longitudinal length. Electrodes are disposed along the distal end portion of the lead body; terminals disposed along the proximal end portion of the lead body; and stimulation conductors couple the terminals to the electrodes. A cerebrospinal-fluid-pulsation detection assembly includes a sensor disposed along the distal end portion of the lead body. The sensor detects pulses of cerebrospinal fluid within a subarachnoid space of a patient and transforms the detected cerebrospinal-fluid pulses into sensor signals. A sensor processor receives the sensor signals from the sensor, processes the received sensor signals to cerebrospinal-fluid pulsation data (“CSF-pulsation data”), and estimates a patient blood-flow condition based on the CSF-pulsation data. A sensor control pathway couples the sensor to the sensor processor.
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Citations
20 Claims
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1. An electrical stimulation lead assembly, comprising:
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at least one lead body having a distal end portion, a proximal end portion, and a longitudinal length; a plurality of electrodes disposed along the distal end portion of the at least one lead body; a plurality of terminals disposed along the proximal end portion of the at least one lead body; a plurality of stimulation conductors coupling the plurality of terminals to the plurality of electrodes; and a cerebrospinal-fluid-pulsation detection assembly (“
CSF-pulsation detection assembly”
) comprisingat least one sensor disposed along the distal end portion of the at least one lead body, the at least one sensor configured and arranged for detecting pulses of cerebrospinal fluid within a subarachnoid space of a patient and transforming the detected pulses of cerebrospinal fluid into sensor signals, a sensor processor for receiving the sensor signals from the at least one sensor, processing the received sensor signals to generate cerebrospinal-fluid pulsation data (“
CSF-pulsation data”
) comprising at least one of amplitude, duration, or rate of cerebrospinal-fluid pulses, and estimating at least one patient blood-flow condition based on the CSF-pulsation data, andat least one sensor control pathway coupling the at least one sensor to the sensor processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A non-transitory computer-readable medium having processor-executable instructions for reading data from at least one sensor disposed along a distal end portion of an electrical stimulation lead assembly of an electrical stimulation system, the processor-executable instructions when installed onto a device enable the device to perform actions, comprising:
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receiving a sensor signal from the at least one sensor; processing the received sensor signal to generate cerebrospinal-fluid pulsation data (“
CSF-pulsation data”
) comprising at least one of amplitude, duration, or rate of cerebrospinal-fluid pulses; andestimating at least one patient blood-flow condition based on the CSF-pulsation data. - View Dependent Claims (18)
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19. A lead-based stimulator comprising:
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at least one stimulator and at least one sensor disposed along an electrical stimulation lead insertable into a patient, the at least one stimulator configured and arranged for stimulating patient tissue, the at least one stimulator configured and arranged for detecting cerebrospinal-fluid-pulsation, the at least one stimulator and the at least one sensor each coupled to a control module; and a processor in communication with the control module, the processor for executing processor-readable instructions that enable actions, including; receiving a sensor signal from the at least one sensor, processing the received sensor signal to generate cerebrospinal-fluid pulsation data (“
CSF-pulsation data”
) comprising at least one of amplitude, duration, or rate of cerebrospinal-fluid pulses, andestimating at least one patient blood-flow condition based on the CSF-pulsation data. - View Dependent Claims (20)
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Specification