Implantable cardiac-stimulator with flat capacitor
First Claim
1. In an implantable cardiac stimulator including an electrical contact, a battery, an energy storage capacitor and control circuitry electrically connected to said contact, battery and capacitor, in which said battery, capacitor and control circuitry are disposed within a housing having mutually orthogonal thickness, width and length axes, said housing having a thickness dimension measured along said thickness axis, a width dimension measured along said width axis and a length dimension measured along said length axis, wherein said thickness dimension is smaller than either of said width and length dimensions, the improvement comprising:
- said energy storage capacitor having mutually orthogonal thickness, width and length axes, and having a thickness dimension measured along said thickness axis, a width dimension measured along said width axis and a length dimension measured along said length axis, wherein said thickness dimension of said capacitor is smaller than either of said width and length dimensions of said capacitor, said capacitor further including a first plate layer, a second plate layer, and a dielectric layer separating said first plate layer and said second plate layer, said first plate, second plate and dielectric layers being arranged spirally about an axis parallel to said thickness axis of said capacitor, said thickness axis of said capacitor being substantially parallel to said thickness axis of said housing.
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Accused Products
Abstract
An implantable cardiac defibrillator includes a housing having a thickness dimension that is smaller than either of the length and width dimensions of the housing. Within the housing is an energy storage capacitor having a thickness dimension that is smaller than either of the length and width dimensions of the capacitor. The capacitor includes a first plate layer, a second plate layer, and a dielectric layer separating the first plate layer and the second plate layer. The first plate, second plate and dielectric layers are arranged spirally about an axis parallel to the thickness axis of the capacitor, with the thickness axis of the capacitor being substantially parallel to the thickness axis of the housing. The capacitor is arranged as an annulus having an open center. A battery is disposed within the open center in the same plane as the capacitor. A circuit board and header are arranged in another plane stacked atop the battery and capacitor.
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Citations
20 Claims
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1. In an implantable cardiac stimulator including an electrical contact, a battery, an energy storage capacitor and control circuitry electrically connected to said contact, battery and capacitor, in which said battery, capacitor and control circuitry are disposed within a housing having mutually orthogonal thickness, width and length axes, said housing having a thickness dimension measured along said thickness axis, a width dimension measured along said width axis and a length dimension measured along said length axis, wherein said thickness dimension is smaller than either of said width and length dimensions, the improvement comprising:
said energy storage capacitor having mutually orthogonal thickness, width and length axes, and having a thickness dimension measured along said thickness axis, a width dimension measured along said width axis and a length dimension measured along said length axis, wherein said thickness dimension of said capacitor is smaller than either of said width and length dimensions of said capacitor, said capacitor further including a first plate layer, a second plate layer, and a dielectric layer separating said first plate layer and said second plate layer, said first plate, second plate and dielectric layers being arranged spirally about an axis parallel to said thickness axis of said capacitor, said thickness axis of said capacitor being substantially parallel to said thickness axis of said housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implantable cardiac stimulator comprising:
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a housing having mutually orthogonal thickness, width and length axes, said housing having a thickness dimension measured along said thickness axis, a width dimension measured along said width axis and a length dimension measured along said length axis, wherein said thickness dimension is smaller than either of said width and length dimensions; an electrical contact attached to said housing; a battery; an energy storage capacitor; and control circuitry electrically connected to said contact, battery and capacitor; said battery, capacitor and control circuitry being disposed within said housing; said energy storage capacitor having mutually orthogonal thickness, width and length axes, and having a thickness dimension measured along said thickness axis, a width dimension measured along said width axis and a length dimension measured along said length axis, wherein said thickness dimension of said capacitor is smaller than either of said width and length dimensions of said capacitor, said capacitor further including a first plate layer, a second plate layer, and a dielectric layer separating said first plate layer and said second plate layer, said first plate, second plate and dielectric layers being arranged spirally about an axis parallel to said thickness axis of said capacitor, said thickness axis of said capacitor being substantially parallel to said thickness axis of said housing. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification