Event-based lead impedance monitoring
First Claim
1. A method comprising:
- monitoring, by a processor, electrical activity within a patient via a plurality of implantable electrodes;
detecting, by the processor, a neurological event based on the electrical activity; and
automatically measuring, with impedance measurement circuitry, an impedance of at least one of a plurality of electrical paths in response to the detection, each of the electrical paths associated with a respective one or more of the plurality of implantable electrodes.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device senses electrical activity within a patient and, in some embodiments, delivers stimulation to the patient via a plurality electrical paths, which include electrodes and associated conductors of one or more leads. The medical device determines whether a symptomatic event, such as a seizure, is detected based on the sensed electrical activity, and measures the impedance of one or more of the paths in response to the determination. If the medical device identifies a dysfunctional electrical path based on the measured impedance, the device may, as examples, disable the dysfunctional electrical path, or modify a stimulation or sensing program to not use the dysfunctional electrical path. In this manner, the medical device may identify inaccurate symptomatic event detection and, where the device delivers a therapy in response to such detection, such as stimulation via the electrical paths, avoid inappropriate therapy delivery.
65 Citations
34 Claims
-
1. A method comprising:
-
monitoring, by a processor, electrical activity within a patient via a plurality of implantable electrodes; detecting, by the processor, a neurological event based on the electrical activity; and automatically measuring, with impedance measurement circuitry, an impedance of at least one of a plurality of electrical paths in response to the detection, each of the electrical paths associated with a respective one or more of the plurality of implantable electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A medical device comprising:
-
impedance measurement circuitry configured to measure an impedance of each of a plurality of electrical paths; and a processor configured to monitor electrical activity within a patient via a plurality of implantable electrodes, each of the electrodes associated with one or more of the electrical paths, wherein the processor is further configured to detect a neurological event based on the electrical activity, and automatically control the impedance measurement circuitry to measure an impedance of at least one of the plurality of electrical paths in response to the detection. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
-
27. A system comprising:
-
means for monitoring electrical activity within a patient; means for detecting a neurological event based on the electrical activity; and means for automatically measuring an impedance of at least one of a plurality of electrical paths in response to the detection of a neurological event, wherein each of the electrical paths is associated with at least one of a plurality of implantable electrodes coupled to the means for monitoring the electrical activity. - View Dependent Claims (28)
-
-
29. A method comprising:
-
monitoring, by a processor, electrical activity within a patient via a plurality of implantable electrodes; determining, by the processor, that a neurological event has not been detected based on the electrical activity; and automatically measuring, with impedance measurement circuitry, an impedance of at least one of a plurality of electrical paths in response to the determination, each of the electrical paths associated with at least one of the plurality of implantable electrodes. - View Dependent Claims (30, 31)
-
-
32. A medical device comprising:
-
impedance measurement circuitry configured to measure an impedance of each a plurality of electrical paths; and a processor configured to monitor electrical activity within a patient via a plurality of implantable electrodes, each of the electrodes associated with one or more of the electrical paths, determine that a neurological event was not detected based on the electrical activity, and automatically control the impedance measurement circuitry to measure an impedance of at least one of the plurality of electrical paths in response to the determination. - View Dependent Claims (33, 34)
-
Specification