Shielded stimulation and sensing system and method
First Claim
1. Apparatus for applying an electrical pulse to, or for sensing electrical activity at, a first region of tissue in an animal, the apparatus comprising:
- a first array of electrodes disposed upon a respective surface, the first array comprising respective first and second electrodes disposed upon the respective surface, the first array further comprising a plurality of respective third electrodes also disposed upon the respective surface and surrounding the respective first and second electrodes;
wherein the first array of electrodes is electrically selectively connected via a lead to electronics located external to the first array of electrodes, the lead comprising at least one electrical conductor;
the selective connections of the electrodes comprising sensing or driving circuitry connecting the first and second electrodes with the at least one electrical conductor, and further comprising circuitry disposing the third electrodes to serve as an electrical shield for the first and second electrodes through conductive coupling with tissue nearby thereto.
3 Assignments
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Accused Products
Abstract
Spatial arrays of electrodes are provided, each array in a region of tissue. The electrodes of an array are connected so that some of the electrodes serve as shield electrodes relative to a pair of electrodes used for pulse stimulation or sensing of electrical activity, or both. The shield electrodes are connected together, defining an electrical node, the node defining a stable potential in predetermined relationship with power supply levels or with reference voltages for sensing circuitry. Multiplexing techniques may be employed so that sensed activity at each of several electrode locations can be communicated to electronics external to the electrode locations.
220 Citations
15 Claims
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1. Apparatus for applying an electrical pulse to, or for sensing electrical activity at, a first region of tissue in an animal, the apparatus comprising:
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a first array of electrodes disposed upon a respective surface, the first array comprising respective first and second electrodes disposed upon the respective surface, the first array further comprising a plurality of respective third electrodes also disposed upon the respective surface and surrounding the respective first and second electrodes; wherein the first array of electrodes is electrically selectively connected via a lead to electronics located external to the first array of electrodes, the lead comprising at least one electrical conductor; the selective connections of the electrodes comprising sensing or driving circuitry connecting the first and second electrodes with the at least one electrical conductor, and further comprising circuitry disposing the third electrodes to serve as an electrical shield for the first and second electrodes through conductive coupling with tissue nearby thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification