Responsive gastric stimulator
First Claim
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1. A method comprising:
- receiving data sensed from an implantable sensor system implanted inside a patient, the sensor system including a transgastric probe having an intragastric sensor disposed within a cavity of a stomach of the patient so as to generate intragastric sensed data, and an accelerometer so as to generate activity sensed data;
determining a characteristic of material ingested by the patient in response to the intragastric sensed data;
determining a gross activity level of the patient in response to the activity sensed data, wherein the determining of the gross activity level comprises determining a period when the patient is sleeping, determining a period when the patient has a wakeful gross activity level, and determining a period when the patient has a higher exertion gross activity level, the higher exertion activity level being more active than the wakeful activity level;
transmitting signals from implanted electronic circuitry of the implantable device to external circuitry outside the patient, and outputting the ingested material characteristic and gross activity level from the external circuitry in response to the signals, wherein outputting the ingested material characteristic and gross activity level comprises communicating to a physician of the patient; and
adjusting an obesity therapy of the patient in response to the ingested material characteristic and in response to the gross activity level of the patient.
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Abstract
A responsive gastrointestinal stimulation device is provided where one or more sensors sense data corresponding to a subject or the gastrointestinal tract of a subject and responds to sensing the data by stimulating, adjusting stimulation, or stopping stimulation of the gastrointestinal tract. A stimulation device is also provided to stimulate the gastrointestinal tract to produce a sensation of satiety or to control hunger or food consumption.
175 Citations
21 Claims
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1. A method comprising:
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receiving data sensed from an implantable sensor system implanted inside a patient, the sensor system including a transgastric probe having an intragastric sensor disposed within a cavity of a stomach of the patient so as to generate intragastric sensed data, and an accelerometer so as to generate activity sensed data; determining a characteristic of material ingested by the patient in response to the intragastric sensed data; determining a gross activity level of the patient in response to the activity sensed data, wherein the determining of the gross activity level comprises determining a period when the patient is sleeping, determining a period when the patient has a wakeful gross activity level, and determining a period when the patient has a higher exertion gross activity level, the higher exertion activity level being more active than the wakeful activity level; transmitting signals from implanted electronic circuitry of the implantable device to external circuitry outside the patient, and outputting the ingested material characteristic and gross activity level from the external circuitry in response to the signals, wherein outputting the ingested material characteristic and gross activity level comprises communicating to a physician of the patient; and adjusting an obesity therapy of the patient in response to the ingested material characteristic and in response to the gross activity level of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device comprising:
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an implantable sensor system coupleable to tissues of a patient so as to sense data from within the patient, the sensor system including a temperature sensor and an accelerometer; and circuitry coupled to the sensor system, the circuitry configured to determine a characteristic of material ingested by the patient in response to a rate of change of the sensed data, and to determine a gross activity level of the patient in response to the sensed data so as to allow an obesity therapy of the patient to be adjusted in response to the ingested material characteristic and in response to the gross activity level of the patient, wherein the circuitry comprises implantable circuitry and external circuitry configured to be disposed outside the patient during use with telemetry for transmitting signals therebetween, and wherein the circuitry is configured; so as to identify a sleeping period in response to the sensed data, so as to identify a wakeful period in response to a wakeful gross activity level of the sensed data, and so as to identify a period when the patient has a higher exertion gross activity level in response to a higher gross activity level of the sensed data, the higher exertion activity level being more active than the wakeful activity level; and an output coupled to the external circuitry for outputting the ingested material characteristic and gross activity level in response to the signals. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system comprising:
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an implantable sensor system configured to be coupled to a tissue within a patient so as to sense data therefrom, the sensor system comprising an accelerometer and an intragastric temperature sensor, the sensed data comprising accelerometer signals from the accelerometer and intragastric temperature signals from within an interior cavity of a stomach of the patient; and a processor coupled to the sensor system, the processor determining a gross activity level of the patient in response to the sensed data so as to allow an obesity therapy of the patient to be adjusted in response thereto, wherein the processor is configured to identify; a wakeful period in response to a wakeful gross activity level of the accelerometer signals; and a higher exertion activity period in response to a gross activity level of the accelerometer signals higher than the wakeful gross activity level; the processor including implantable circuitry, external circuitry for use outside the patient body, and wireless telemetry coupling the implanted and external circuitry; and an output coupled to the external circuitry so as to indicate the gross activity level.
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Specification