Electromagnetic sensor for use in measurements on a subject
First Claim
1. A sensing device for use in measurements in a body cavity of a subject, the sensing device comprising a housing carrying a sensing head and one or more near-field electromagnetic (EM) tissue characterization sensor units, the sensing head being formed by respective one or more sensing surfaces of said one or more near-field EM sensor units, whereineach sensing surface comprises an electrically conductive material formed as a flat layer by which the sensing head faces a region of interest in the body cavity,each near-field EM sensor unit further comprises:
- an array of sensor cells defining a corresponding array of sensing regions arranged in a spaced-apart relationship in said sensing surface and surrounded by said electrically conductive material, anda flexible signal transmission structure integral with said sensing surface such that the signal transmission structure and the sensing surface have at least one common continuous surface, said signal transmission structure comprises a first layer comprising an array of spaced-apart signal connection lines associated respectively with said array of sensor cells and a second layer being electrically conductive and electrically coupled to said flat layer of the sensing surface;
the near-field EM sensor units being configured for providing impedance controlled signal transmission to and from the sensing regions.
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Abstract
A sensor unit for use in measurements on a subject is presented. The sensor unit includes a near field electromagnetic sensor and a flexible signal transmission structure, which are integral with one another by means of at least one common continuous surface. The flexible signal transmission structure is constructed from a first layer including signal connection lines associated with sensor cells near field electromagnetic sensor and a second electrically conductive layer electrically coupled to the electrically conductive material of the sensor.
32 Citations
21 Claims
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1. A sensing device for use in measurements in a body cavity of a subject, the sensing device comprising a housing carrying a sensing head and one or more near-field electromagnetic (EM) tissue characterization sensor units, the sensing head being formed by respective one or more sensing surfaces of said one or more near-field EM sensor units, wherein
each sensing surface comprises an electrically conductive material formed as a flat layer by which the sensing head faces a region of interest in the body cavity, each near-field EM sensor unit further comprises: -
an array of sensor cells defining a corresponding array of sensing regions arranged in a spaced-apart relationship in said sensing surface and surrounded by said electrically conductive material, and a flexible signal transmission structure integral with said sensing surface such that the signal transmission structure and the sensing surface have at least one common continuous surface, said signal transmission structure comprises a first layer comprising an array of spaced-apart signal connection lines associated respectively with said array of sensor cells and a second layer being electrically conductive and electrically coupled to said flat layer of the sensing surface; the near-field EM sensor units being configured for providing impedance controlled signal transmission to and from the sensing regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A sensing device for use in measurements in a body cavity of a subject, the sensing device comprising a housing carrying a sensing head and one or more near-field electromagnetic (EM) tissue characterization sensor units, the sensing head being formed by respective one or more sensing surfaces of said one or more near-field EM sensor units, wherein
each near-field EM sensor unit further comprises: -
an array of sensor cells defining a corresponding array of sensing regions arranged in a spaced-apart relationship in said sensing surface and surrounded by said electrically conductive material, and a flexible signal transmission structure integral with said sensing surface such that the signal transmission structure and the sensing surface have at least one common continuous surface, the near-field EM sensor units being configured for providing impedance controlled signal transmission to and from the sensing regions, wherein said near field electromagnetic sensor unit comprises an additional sensor layer being electrically conductive and located in between said first and second sensor layers;
said additional sensor layer having spaced-apart signal transmission regions configured as substantially non-conductive regions aligned with at least some of the sensing regions, said signal transmission regions being substantially smaller than the corresponding sensing regions, thereby providing by said additional sensor layer an electrical screening of at least a portion of the signal lines from the sensing regions.
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Specification