Synchronizing continuous signals and discrete events for an implantable medical device
First Claim
1. A system comprising:
- an implantable medical device, the implantable medical device comprising;
at least one electrical input, to receive sensed electrical activity of a heart;
a sampler circuit, coupled to the at least one electrical input, operable to generate sampled values of the sensed electrical activity;
a clock circuit, the clock circuit operable to generate readable values representative of time;
a memory, including an event marker buffer; and
a controller circuit, coupled to the sampler circuit, the clock circuit, and the memory, the controller circuit operable to process the sampled values to generate at least one marker to indicate a detected event related to the sensed electrical activity, and wherein the controller circuit is operable to read a clock circuit value as a timestamp representative of absolute time, the timestamp indicating when the detected event occurred, and the controller circuit also operable to store the at least one marker with the timestamp in the event marker buffer of the memory.
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Accused Products
Abstract
A system comprises an implantable medical device (IMD). The IMD includes at least one electrical input to receive sensed electrical activity of a heart and a sampler circuit coupled to the at least one electrical input. The sampler circuit generates sampled values of the sensed electrical activity. The IMD includes a clock circuit that generates readable values representative of absolute time. The IMD also includes a controller circuit coupled to the sampler circuit and the clock circuit. The controller circuit processes the sampled values and generate at least one marker to indicate a detected event related to the electrical activity. The controller circuit also stores a timestamp of absolute time of the detected event with the at least one marker in memory.
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Citations
31 Claims
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1. A system comprising:
an implantable medical device, the implantable medical device comprising;
at least one electrical input, to receive sensed electrical activity of a heart;
a sampler circuit, coupled to the at least one electrical input, operable to generate sampled values of the sensed electrical activity;
a clock circuit, the clock circuit operable to generate readable values representative of time;
a memory, including an event marker buffer; and
a controller circuit, coupled to the sampler circuit, the clock circuit, and the memory, the controller circuit operable to process the sampled values to generate at least one marker to indicate a detected event related to the sensed electrical activity, and wherein the controller circuit is operable to read a clock circuit value as a timestamp representative of absolute time, the timestamp indicating when the detected event occurred, and the controller circuit also operable to store the at least one marker with the timestamp in the event marker buffer of the memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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sensing electrical activity of a heart using an implantable device;
detecting events associated with the electrical activity;
storing event markers representing the events in a memory, each event marker including a timestamp of when a corresponding event occurred, the timestamp representative of an absolute time; and
transmitting the event markers to an external device. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification