Optimization Of Thresholds For Eating Detection
First Claim
1. A method comprising:
- providing a fundic impedance signal of a subject sensed during an initial calibration period using at least one implantable fundic sensor of an eating detection device;
receiving an indication of actual ingestion events of the subject during the initial calibration period;
using a cost function, performing an analysis of the fundic impedance signal and the actual ingestion events;
responsively to the analysis, setting a threshold, the crossing of which by the fundic impedance signal is indicative of ingestion; and
storing the threshold in a memory of the eating detection device.
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Accused Products
Abstract
A method is provided that includes providing a fundic impedance signal of a subject sensed during an initial calibration period using at least one implantable fundic sensor of an eating detection device. An indication is received of actual ingestion events of the subject during the initial calibration period. Using a cost function, an analysis is performed of the fundic impedance signal and the actual ingestion events. Responsively to the analysis, a threshold is set, the crossing of which by the fundic impedance signal is indicative of ingestion. The threshold is stored in a memory of the eating detection device. Other embodiments are also described.
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Citations
57 Claims
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1. A method comprising:
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providing a fundic impedance signal of a subject sensed during an initial calibration period using at least one implantable fundic sensor of an eating detection device; receiving an indication of actual ingestion events of the subject during the initial calibration period; using a cost function, performing an analysis of the fundic impedance signal and the actual ingestion events; responsively to the analysis, setting a threshold, the crossing of which by the fundic impedance signal is indicative of ingestion; and storing the threshold in a memory of the eating detection device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 11, 12, 13, 14, 15, 16, 17, 21, 22, 23, 24)
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9-10. -10. (canceled)
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18-20. -20. (canceled)
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25. Apparatus for use with an eating detection device having a memory and at least one implantable fundic sensor, the apparatus comprising:
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an interface, configured to communicate with the eating detecting device; and a processor, configured to receive, via the interface, a fundic impedance signal of a subject sensed during an initial calibration period using the at least one implantable fundic sensor of the eating detection device;
to receive an indication of actual ingestion events of the subject during the initial calibration period;
using a cost function, to perform an analysis of the fundic impedance signal and the actual ingestion events;
responsively to the analysis, to set a threshold, the crossing of which by the fundic impedance signal is indicative of ingestion; and
to store, via the interface, the threshold in the memory of the eating detection device. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 38)
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36-37. -37. (canceled)
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39. Apparatus comprising:
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one or more implantable fundic sensors, configured to be applied to a fundus of a subject, and to generate a fundic impedance signal; and a control element, which comprises a memory, and which is configured to; receive the fundic impedance signal sensed during an initial calibration period, receive an indication of actual ingestion events of the subject during the initial calibration period, using a cost function, perform an analysis of the fundic impedance signal and the actual ingestion events, responsively to the analysis, set a threshold, the crossing of which by the fundic impedance signal is indicative of ingestion, and store the threshold in the memory. - View Dependent Claims (40, 41, 42, 43, 46, 47, 48, 51, 52, 53)
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44-45. -45. (canceled)
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49-50. -50. (canceled)
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54. A computer software product for use with an eating detection device having a memory and at least one implantable fundic sensor, the product comprising a tangible computer-readable medium in which program instructions are stored, which instructions, when read by a computer, cause the computer to receive a fundic impedance signal of a subject sensed during an initial calibration period using the at least one implantable fundic sensor of the eating detection device;
- to receive an indication of actual ingestion events of the subject during the initial calibration period;
using a cost function, to perform an analysis of the fundic impedance signal and the actual ingestion events;
responsively to the analysis, to set a threshold, the crossing of which by the fundic impedance signal is indicative of ingestion; and
to store the threshold in the memory of the eating detection device. - View Dependent Claims (55, 56, 57)
- to receive an indication of actual ingestion events of the subject during the initial calibration period;
Specification