Sensor belt configured to localize an in-vivo device and method for localization
AssigneeGiven Imaging Ltd.
InventorsSemion Khait, Oren Rosenberg
Life of this patent
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Abstract
A wearable sensor belt used as a reference frame for determining a location of an in-vivo device in the gastrointestinal (GI) tract, the belt including N magnetic field generating coils and M magnetic field sensors configured for dynamic calibration of the belt's geometry in order to accommodate for dynamic changes in the shape and/or size of the belt from one subject to another, and for dynamic changes in the shape and/or size of the belt as a result of changes in a subject's posture. A method for localizing an in-vivo device swallowed by a subject using a sensor belt is also described.
Claims23
A sensor belt system for localizing an in-vivo device in a gastrointestinal tract of a subject, comprising:
- a belt wearable by a subject;
- a number N of magnetic coils distributed in the belt, to generate magnetic fields;
- a number M of magnetic field sensors distributed along the length of the belt, to sense magnetic fields;
- and
- a controller configured to:
- select magnetic coils from the N magnetic coils and activate the selected magnetic coils sequentially to generate magnetic fields;
- select, for each activated magnetic coil, magnetic field sensors from the M magnetic field sensors to sense a generated magnetic field;
- and
- calculate a geometry of the belt from the sensed magnetic fields, said geometry to be used as a coordinate system for localizing an in-vivo device.
A method for localizing an in-vivo device swallowed by a subject, comprising:
- for a sensor belt worn by the subject and including N magnetic coils and M magnetic field sensors performing,
- selecting magnetic coils from the N magnetic coils and activating the selected magnetic coils sequentially to generate magnetic fields;
- for each activated magnetic coil, selecting magnetic field sensors from the M magnetic field sensors to concurrently sense a generated magnetic field;
- calculating a geometry of the sensor belt from the sensed magnetic fields, said geometry defining a coordinate system;
- selecting magnetic coils from the N magnetic coils and activating the selected magnetic coils to generate magnetic fields;
- sensing the magnetic fields by magnetic field sensor(s) included in the in-vivo device;
- and
- determining the location of the in-vivo device relative to the coordinate system from the sensed magnetic fields.
A method for localizing an in-vivo device swallowed by a subject, comprising:
- for a sensor belt worn by the subject and including N magnetic coils and M magnetic field sensors performing,
- calculating a geometry of the sensor belt from magnetic fields generated by magnetic coils included in the sensor belt and sensed by magnetic field sensors included in the sensor belt, the sensor belt geometry defining a coordinate system;
- activating magnetic coils included in the sensor belt to generate magnetic fields;
- and
- determining a location of the in-vivo device, relative to the coordinate system, from magnetic fields sensed by magnetic field sensors included in the in-vivo device.
Dependencies are inferred from the claim text.