Electrically insulated component sub-assemblies of implantable medical devices
First Claim
1. An implantable medical device of the type comprising a housing having a housing cavity enclosing a plurality of like electrical components assembled into an electrical component sub-assembly, wherein the electrical component sub-assembly further comprises:
- first and second electrical components, each electrical component comprising a electrical component case comprising first and second generally opposed, electrical component case major sides joined together through a continuous electrical component case minor side that maintains the first and second electrical component case major case sides substantially in parallel alignment, whereby the junction of the first electrical component case major side with the electrical component case minor side defines a perimeter having a bend radius;
a shape conforming insulating spacer of an insulating material interposed between the major sides of the electrical components, respectively, the shape conforming insulating spacer having a spacer bottom shaped to conform to the shape of the first electrical component case major side of the first electrical component and a spacer rim shaped to conform with the bend in the perimeter of the first electrical component case major side of the first electrical component; and
means contacting at least portions of the continuous minor case sides of the electrical component cases for maintaining the sub-assembly of the electrical components with the shape conforming insulating spacer interposed therebetween.
1 Assignment
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Accused Products
Abstract
Implantable medical devices (IMDs) and their various components, particularly methods and apparatus for electrically isolating and supporting components of an IMD IPG, e.g., capacitors of a capacitor sub-assembly, thereof in volumetrically efficient ways. A capacitor sub-assembly comprising two or more capacitors stacked side-by-side such that the facing capacitor case major sides are separated by a reliable and simple to apply insulation layer of minimal thickness is disclosed for assembly with other components of an ICD IPG into an IPG housing. A shape conforming insulating spacer is formed of an insulating polymer to conform to the shape of a first capacitor case major side and the perimeter of that major side. The shape conforming insulating spacer is simply applied or adhered by adhesive layers, bands or patterns to one or both of the facing capacitor case major sides.
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Citations
43 Claims
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1. An implantable medical device of the type comprising a housing having a housing cavity enclosing a plurality of like electrical components assembled into an electrical component sub-assembly, wherein the electrical component sub-assembly further comprises:
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first and second electrical components, each electrical component comprising a electrical component case comprising first and second generally opposed, electrical component case major sides joined together through a continuous electrical component case minor side that maintains the first and second electrical component case major case sides substantially in parallel alignment, whereby the junction of the first electrical component case major side with the electrical component case minor side defines a perimeter having a bend radius;
a shape conforming insulating spacer of an insulating material interposed between the major sides of the electrical components, respectively, the shape conforming insulating spacer having a spacer bottom shaped to conform to the shape of the first electrical component case major side of the first electrical component and a spacer rim shaped to conform with the bend in the perimeter of the first electrical component case major side of the first electrical component; and
means contacting at least portions of the continuous minor case sides of the electrical component cases for maintaining the sub-assembly of the electrical components with the shape conforming insulating spacer interposed therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of fabricating a electrical component sub-assembly for an implantable medical device of the type comprising a housing having a housing cavity enclosing components including an electronic circuit module, a battery, the electrical component sub-assembly, and circuitry interconnecting the electronic circuit module, battery and the electrical component sub-assembly, the method comprising:
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fabricating first and second electrical components, each electrical component comprising an electrical component case enclosing an anode and cathode assembly and supporting anode and cathode terminals, each electrical component case comprising first and second generally opposed, electrical component case major case sides joined together through a continuous electrical component case minor side that maintains the first and second electrical component case major case sides substantially in parallel alignment, whereby the junction of the first electrical component case major side with the electrical component case minor side defines a perimeter having a bend radius;
fabricating a shape conforming insulating spacer of an insulating material, the shape conforming insulating spacer having a spacer bottom shaped to conform to the shape of the first electrical component case major side of the first electrical component and a spacer rim shaped to conform with the bend in the perimeter of the first electrical component case major side of the first electrical component;
interposing the shape conforming insulating spacer between the first and second major sides of the first and second electrical components, respectively; and
coupling at least portions of the continuous minor case sides of the first and second electrical component cases for maintaining the sub-assembly of the first and second electrical components with the shape conforming insulating spacer interposed therebetween. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification