Energy Harvester Device For Autonomous Intracorporeal Capsule
First Claim
1. An autonomous intracorporeal leadless capsule, comprising a body having an exterior and an interior, electronic circuit disposed in said interior and an energy harvesting circuit disposed in said interior, comprising:
- a transducer for energy harvesting, for converting an external physical effect applied to the capsule body into an electrical charge, this transducer comprising;
a first capacitor electrode (50), coupled to movable actuation member receiving said external physical effect, said movable actuation member actuation being substantially free of an oscillating weight and comprising a deformable surface (42), on the exterior of the body, said deformable surface being deformed in a first direction and a second direction opposite said first direction in response to an affect of pressure variations in a medium surrounding the body, anda second capacitor electrode (54), mounted on a support (56) connected to a region of the body other than the movable actuation member, the first and second capacitor electrodes having respective surfaces positioned in vis-à
-vis separated by a dielectric gap together defining a capacitor (C), and said pressure variation, producing a correlative modification of said surfaces in vis-à
-vis and/or of said dielectric gap with correlative variation of the capacity of said capacitor; and
an energy storage and management circuit, powered by the energy harvester transducer in response to a reduction in surfaces in vis-à
-vis and/or an increase of the dielectric gap of the capacitor,wherein said deformable surface (42) is coupled to the first capacitor electrode by a mechanical high-pass filter for pressure variations in the medium surrounding the capsule.
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Accused Products
Abstract
An energy harvester device for an autonomous intracorporeal leadless capsule having an outside surface (42) on the body (40) of the capsule, that is deformable under the effect of pressure variations in the environment surrounding the capsule. A first capacitor electrode coupled to the deformable surface and a mechanical damping element (68) form a high-pass filter with respect to the pressure variations, and a second capacitor electrode (54) is mounted on a support (56) connected to the body. The deformable surface movement produces a correlative modification of the spacing between the two electrodes with a correlative variation of the capacity of said capacitor. The capacitor is preloaded when its capacity is maximum, it is unloaded by transferring its energy into a storage circuit when this capacity decreases under the effect of a reduction in the opposing surfaces and/or of an increase of the dielectric gap.
117 Citations
7 Claims
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1. An autonomous intracorporeal leadless capsule, comprising a body having an exterior and an interior, electronic circuit disposed in said interior and an energy harvesting circuit disposed in said interior, comprising:
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a transducer for energy harvesting, for converting an external physical effect applied to the capsule body into an electrical charge, this transducer comprising; a first capacitor electrode (50), coupled to movable actuation member receiving said external physical effect, said movable actuation member actuation being substantially free of an oscillating weight and comprising a deformable surface (42), on the exterior of the body, said deformable surface being deformed in a first direction and a second direction opposite said first direction in response to an affect of pressure variations in a medium surrounding the body, and a second capacitor electrode (54), mounted on a support (56) connected to a region of the body other than the movable actuation member, the first and second capacitor electrodes having respective surfaces positioned in vis-à
-vis separated by a dielectric gap together defining a capacitor (C), and said pressure variation, producing a correlative modification of said surfaces in vis-à
-vis and/or of said dielectric gap with correlative variation of the capacity of said capacitor; andan energy storage and management circuit, powered by the energy harvester transducer in response to a reduction in surfaces in vis-à
-vis and/or an increase of the dielectric gap of the capacitor,wherein said deformable surface (42) is coupled to the first capacitor electrode by a mechanical high-pass filter for pressure variations in the medium surrounding the capsule. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification