Flat capacitor for an implantable medical device
First Claim
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1. A capacitor comprising:
- a first anode stack having a first number of anode foils;
a second anode stack having a second number of anode foils, where the first number of anode foils is different than the second number of anode foils;
a first connection member attached to the first anode stack, the first connection member having a first section extending over and confronting an edge face of the first anode stack; and
a second connection member attached to the second anode stack, the second connection member having a first section extending over and confronting an edge face of the second anode stack;
wherein the first connection member and the second connection member are connected to each other and wherein the first section of the first connection member is a different size than the first section of the second connection member.
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Abstract
One aspect provides a capacitor having a first stack of capacitive elements a second stack of capacitive elements, wherein the first and second stacks are enclosed in separate compartments of a capacitor case that electrically isolate the electrolytes of each stack from one another.
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Citations
99 Claims
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1. A capacitor comprising:
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a first anode stack having a first number of anode foils;
a second anode stack having a second number of anode foils, where the first number of anode foils is different than the second number of anode foils;
a first connection member attached to the first anode stack, the first connection member having a first section extending over and confronting an edge face of the first anode stack; and
a second connection member attached to the second anode stack, the second connection member having a first section extending over and confronting an edge face of the second anode stack;
wherein the first connection member and the second connection member are connected to each other and wherein the first section of the first connection member is a different size than the first section of the second connection member. - View Dependent Claims (2, 3)
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4. A capacitor comprising:
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a case having a curved interior surface; and
first, second, and third capacitor modules, each having an anode stack and a cathode and each having respective first, second, and third edge faces that confront the curved interior surface of the case, with the third edge face set back from the second edge face and the second edge face set back from the first edge face to define a profile generally congruent to a profile of the curved interior surface;
wherein the first capacitor module anode stack having a first number of anode foils and the second capacitor module anode stack having a second number of anode foils, where the first number of anode foils is different than the second number of anode foils. - View Dependent Claims (5, 6, 7)
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8. A capacitor comprising:
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an aluminum case having an etched inner surface;
a lid having an etched inner surface attached to the case;
a capacitor stack disposed within the case, the capacitor stack including a plurality of cathode stacks and a plurality of anode stacks, the cathode stacks electrically coupled to a cathode conductive tab, the cathode conductive tab having at least a portion positioned between the case and the lid, wherein the cathode stacks are electrically coupled with the etched inner surfaces of the case and the lid; and
the plurality of anode stacks including a first anode stack disposed adjacent to one of the etched inner surfaces, the first anode stack having a major surface facing one of the etched inner surfaces and having an electrolyte saturated separator disposed between one of the etched inner surfaces and the major surface. - View Dependent Claims (9, 10)
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11. A capacitor comprising:
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an aluminum case having an etched inner surface;
a capacitor stack disposed within the case, the capacitor stack including a plurality of cathode stacks and a plurality of anode stacks, the cathode stacks electrically coupled with the etched inner surface; and
the plurality of anode stacks including a first anode stack disposed adjacent to the etched inner surface, the first anode stack having a major surface facing the etched inner surface of the case and having an electrolyte saturated separator disposed between the etched inner surface and the major surface to facilitate charge storage between the etched inner surface and the major surface;
wherein one or more anode foils include a porous structure and have a formation voltage of approximately 441 volts or greater. - View Dependent Claims (12, 13, 14)
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15. A capacitor comprising:
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one or more anodes;
a cathode structure comprising a plurality of integrally connected cathode plates, the cathode structure having a serpentine shape, interweaving under and over each of the one or more anodes, wherein each of the one or more anodes is located between a pair of adjacent cathode plates; and
a plurality of separators, at least one of the plurality of separators is located between each of the one or more anodes and each of the plurality of cathode plates. - View Dependent Claims (16, 17)
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18. A cathode for a capacitor, the cathode comprising:
a plurality of cathode plates, each of the plurality of cathode plates is integrally attached to its neighboring plates at a fold area, each of the cathode plates having a major surface, wherein when the cathode is folded at each fold area, the major surface of each cathode plate is substantially parallel to a major surface of an adjacent cathode plate. - View Dependent Claims (19, 20)
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21. A method of manufacturing a capacitor, the method comprising:
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providing a cathode comprising a plurality of cathode plates, the plurality of plates arranged so that each of the plurality of plates is integrally attached to its neighboring plates, the cathode foldable into a serpentine shape having a plurality of folds;
inserting at least one anode between each of the plurality of folds; and
inserting a separator between each anode and each cathode plate. - View Dependent Claims (22, 23)
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24. A feedthrough assembly for a capacitor, the feedthrough assembly comprising:
an electrically conductive member dimensioned to extend at least partially through a feedthrough hole of a case of the capacitor, the conductive member having a passage therethrough. - View Dependent Claims (25, 26, 27, 28)
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29. A feedthrough assembly for providing an electrical pathway between a capacitor stack within a capacitor case and a component outside the case, the feedthrough assembly comprising:
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a first member for electrically connecting the capacitor stack to the component, the first member having a passage adapted to couple with a terminal fastener so that the terminal fastener is removably attachable to the first member; and
a second member for electrically insulating the first member from the case. - View Dependent Claims (30, 31, 32, 33)
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34. A capacitor comprising:
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a case having a hole;
a capacitor stack within the case; and
at least one feedthrough assembly located at least partially within the hole and coupled to the capacitor stack, the feedthrough assembly including a conductive member having a passage and an insulative member between the conductive member and the case. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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41. A method for manufacturing a capacitor, the method comprising:
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providing a capacitor case having a hole;
installing a feedthrough assembly at least partially into the hole, the feedthrough assembly comprising a conductive member having a passage therethrough; and
filling the case with an electrolyte solution through the passage. - View Dependent Claims (42)
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43. A method for replacing a first capacitor installed in a medical device with a second capacitor, the method comprising:
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disengaging a terminal coupled to the medical device from a feedthrough passage of the first capacitor; and
installing the same terminal into a feedthrough passage of the second capacitor. - View Dependent Claims (44)
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45. A capacitor comprising:
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a first stack of capacitive elements where each element comprises an anode plate and a cathode plate with an electrolyte interposed therebetween; and
,a second stack of capacitive elements, wherein the first and second stacks are enclosed in separate compartments of a capacitor case that electrically isolate the electrolytes of each stack from one another. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52)
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53. A method for constructing a capacitor, comprising:
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providing a first stack of capacitive elements where each element comprises an anode plate and a cathode plate with an electrolyte interposed therebetween;
providing a second stack of capacitive elements; and
,enclosing the first and second stacks in separate compartments of a capacitor case that electrically isolate the electrolytes of each compartment. - View Dependent Claims (54, 55, 56, 57, 58)
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59. A capacitor comprising:
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a conductive case including first and second electrically isolated compartments;
a first stack of one or more capacitive elements in the first compartment; and
a second stack of one or more capacitive elements in the second compartment. - View Dependent Claims (60, 61, 62)
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63. An implantable heart rhythm management system comprising:
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a capacitor case; and
means for preventing development of excessive pressure within the capacitor case. - View Dependent Claims (64)
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65. An implantable heart rhythm management device comprising:
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one or more leads for sensing electrical signals of a patient or for applying electrical energy to the patient;
a monitoring circuit for monitoring heart activity of the patient through one or more of the leads; and
a therapy circuit for delivering electrical energy through one or more of the leads to a heart of the patient, wherein the therapy circuit includes one or more capacitors, each comprising;
a capacitor case including a portion having opposing interior and exterior surfaces, with the portion having a hole; and
a semi-permeable membrane adjacent the hole to regulate passage of fluids through the hole. - View Dependent Claims (66, 67)
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68. A capacitor comprising:
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one or more capacitor modules;
a case at least partially enclosing the one or more capacitor modules; and
means for preventing development of excessive pressure within the capacitor case. - View Dependent Claims (69)
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70. A capacitor comprising:
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one or more capacitor modules, each comprising an anode and a cathode;
a capacitor case at least partially enclosing the one or more capacitor modules and including a portion having a hole; and
a semi-permeable membrane adjacent the hole to regulate passage of fluids through the hole. - View Dependent Claims (71, 72, 73, 74, 75)
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76. A capacitor comprising:
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one or more capacitor modules, each comprising an anode and a cathode;
a capacitor case at least partially enclosing the one or more capacitor modules and including a portion having a hole; and
a valve adjacent the hole to regulate passage of fluids through the hole. - View Dependent Claims (77, 78, 79, 80)
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81. A capacitor comprising:
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one or more capacitor modules, each comprising an anode and a cathode;
a capacitor case at least partially enclosing the one or more capacitor modules and including a portion having a hole; and
a bladder adjacent the hole to receive fluids passing through the hole. - View Dependent Claims (82, 83, 84, 85)
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86. A capacitor comprising:
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a capacitor case having a vent aperture; and
gas-exchange means for permitting gas molecules to pass through the vent aperture and restricting passage of liquid molecules.
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87. A method of operating an electrolytic capacitor having an interior and exterior, the method comprising:
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charging or discharging the capacitor one or more times;
venting gases from the interior of the capacitor to the exterior of the capacitor. - View Dependent Claims (88, 89, 90, 91, 92)
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93. An implantable medical device comprising:
a therapy circuit for delivering electrical energy, wherein the therapy circuit includes one or more capacitors, each of the one or more capacitors comprising;
a case; and
a capacitor stack within the case, the capacitor stack comprising;
a plurality of anodes;
a cathode structure comprising a plurality of integrally connected cathode plates, the cathode structure having a serpentine shape, interweaving under and over each anode; and
a plurality of electrolyte impregnated separators, at least one of the plurality of electrolyte impregnated separators located between each anode and each cathode plate.
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94. An implantable medical device comprising:
a therapy circuit for delivering electrical energy, wherein the therapy circuit includes one or more capacitors, each of the one or more capacitors comprising;
a case;
a capacitor stack within the case; and
a feedthrough assembly for electrically coupling the capacitor stack to a component outside the case, the feedthrough assembly comprising;
a conductive member having a mounting section adapted to couple with a terminal fastener, the terminal fastener for removably attaching a terminal to the feedthrough assembly; and
an insulative member for insulating the conductive member from the case. - View Dependent Claims (95, 96)
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97. A method for manufacturing an implantable medical device, the method comprising:
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providing a case having circuitry;
providing a capacitor case having a hole;
installing a feedthrough assembly at least partially into the hole, the feedthrough assembly comprising a conductive member having a passage;
mounting a terminal to the passage; and
coupling a conductor coupled to the circuitry to the terminal. - View Dependent Claims (98, 99)
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Specification