Implantable medical device employing integral housing for a formable flat battery
First Claim
1. A selectively deformable housing assembly for an implantable medical device, comprising:
- a housing comprising a first shell and a second shell, the first and second shells comprising an inner surface and an outer surface, respectively, the outer surfaces of the first and second shells comprising a material compatible with body fluids;
a battery enclosure comprising a cover and all or a portion of the first shell of the housing assembly, the cover of the battery enclosure disposed between the inner surfaces of the first and second shells, wherein said cover has a greater thickness dimension or a higher modulus of elasticity than the first shell and an insulated electrical conductor sealingly coupled therethrough;
an electrochemical battery cell including an anode member, a cathode pellet and a liquid electrolyte disposed in the battery enclosure;
an operable electronic circuit electrically coupled to the electrochemical battery cell, electrically coupled to a medical electrical lead, and wherein said operable electronic circuit is mechanically coupled between the inner surface of the second shell and the cover of the battery enclosure and a majority of the operable electronic circuit is coupled to a deformable, flexible circuit substrate; and
a hermetic seal isolating the battery enclosure.
1 Assignment
0 Petitions
Accused Products
Abstract
A body implantable medical device (IMD) includes a first shell and a second shell whose outer surfaces are biocompatible. The IMD further includes a battery enclosure defined by a cover and all or a portion of the first shell of the IMD housing. The cover of the battery enclosure is disposed between the inner surfaces of the first and second shells and has a greater rigidity than the first shell. An electrochemical cell, such as a flat liquid electrolyte battery, is provided in the battery enclosure. Electronic circuitry, supported on a flexible wiring substrate, is provided between the inner surface of the second shell and the cover of the battery enclosure. A hermetic seal is provided between the cover of the battery enclosure and all or a portion of the first shell. The hermetic seal is preferably a weld joint, such as a butt, spank or standing edge weld joint.
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Citations
18 Claims
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1. A selectively deformable housing assembly for an implantable medical device, comprising:
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a housing comprising a first shell and a second shell, the first and second shells comprising an inner surface and an outer surface, respectively, the outer surfaces of the first and second shells comprising a material compatible with body fluids;
a battery enclosure comprising a cover and all or a portion of the first shell of the housing assembly, the cover of the battery enclosure disposed between the inner surfaces of the first and second shells, wherein said cover has a greater thickness dimension or a higher modulus of elasticity than the first shell and an insulated electrical conductor sealingly coupled therethrough;
an electrochemical battery cell including an anode member, a cathode pellet and a liquid electrolyte disposed in the battery enclosure;
an operable electronic circuit electrically coupled to the electrochemical battery cell, electrically coupled to a medical electrical lead, and wherein said operable electronic circuit is mechanically coupled between the inner surface of the second shell and the cover of the battery enclosure and a majority of the operable electronic circuit is coupled to a deformable, flexible circuit substrate; and
a hermetic seal isolating the battery enclosure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
wherein the sealing glass is a one of the following;
9013 glass, CABAL-12, or Ta-23 glass; and
wherein the ferrule is constructed from a one of the following materials;
MP-35N, 304L stainless steel or titanium 6-4.
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9. The deformable housing assembly of claim 1, further comprising:
an antenna coupled to the deformable, flexible substrate.
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10. The deformable housing assembly of claim 9, wherein the antenna is embedded into the deformable, flexible substrate.
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11. The deformable housing assembly of claim 1, wherein the implantable medical device is one of the following:
- a pacemaker, a monitoring device, a nerve stimulator, a pacemaker/cardioverter/defibrillator, or an implantable cardioverter/defibrillator.
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12. The deformable housing assembly of claim 1, wherein the cover has regions of different elevation and at least one of the regions defines a recessed region between the cover and the second shell.
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13. The deformable housing assembly of claim 1, wherein the battery enclosure has a maximum thickness of approximately 0.135 inches.
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14. The deformable housing assembly of claim 1, wherein the housing is further defined by a perimeter, the perimeter having a significant curvilinear portion.
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15. A selectively deformable housing assembly for an implantable medical device, comprising:
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a housing comprising a first shell and a second shell, the first and second shells comprising an inner surface and an outer surface, respectively, the outer surfaces of the first and second shells comprising a material compatible with body fluids, the first shell comprising a substantially straight peripheral wall portion;
a battery enclosure comprising a cover and all or a portion of the first shell of the housing assembly, the cover of the battery enclosure disposed between the inner surfaces of the first and second shells, wherein said cover comprises a coined edge and has a greater thickness dimension or a higher modulus of elasticity than the first shell, and an insulated electrical conductor sealingly coupled therethrough;
an electrochemical battery cell including an anode member, a cathode pellet and a liquid electrolyte disposed in the battery enclosure;
an operable electronic circuit electrically coupled to the electrochemical battery cell, electrically coupled to a medical electrical lead, and wherein said operable electronic circuit is mechanically coupled between the inner surface of the second shell and the cover of the battery enclosure and a majority of the operable electronic circuit is coupled to a deformable, flexible circuit substrate; and
a hermetic seal comprising a butt weld joint between the coined edge of the cover and the substantially straight peripheral wall portion of the first shell.
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16. A selectively deformable housing assembly for an implantable medical device, comprising:
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a housing comprising a first shell and a second shell, the first and second shells comprising an inner surface and an outer surface, respectively, the outer surfaces of the first and second shells comprising a material compatible with body fluids, the first shell comprising a spanked edge;
a battery enclosure comprising a cover and all or a portion of the first shell of the housing assembly, the cover of the battery enclosure disposed between the inner surfaces of the first and second shells, wherein the cover comprises a peripheral edge and has a greater thickness dimension or a higher modulus of elasticity than the first shell, and an insulated electrical conductor sealingly coupled therethrough;
an electrochemical battery cell including an anode member, a cathode pellet and a liquid electrolyte disposed in the battery enclosure;
an operable electronic circuit electrically coupled to the electrochemical battery cell, electrically coupled to a medical electrical lead, and wherein said operable electronic circuit is mechanically coupled between the inner surface of the second shell and the cover of the battery enclosure and a majority of the operable electronic circuit is coupled to a deformable, flexible circuit substrate; and
a hermetic seal comprising a spank weld joint between the peripheral edge of the cover and the spanked edge of the first shell. - View Dependent Claims (17)
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18. A selectively deformable housing assembly for an implantable medical device, comprising:
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a housing comprising a first shell and a second shell, the first and second shells comprising an inner surface and an outer surface, respectively, the outer surfaces of the first and second shells comprising a material compatible with body fluids, the first shell comprising a first substantially straight peripheral wall portion and a second substantially straight peripheral wall portion adjacent the first substantially straight peripheral wall portion and being offset relative to the first substantially straight peripheral wall portion;
a battery enclosure comprising a cover and all or a portion of the first shell of the housing assembly, the cover of the battery enclosure disposed between the inner surfaces of the first and second shells, wherein the cover comprises a substantially straight peripheral wall portion and has a greater thickness dimension or a higher modulus of elasticity than the first shell, and an insulated electrical conductor sealingly coupled therethrough;
an electrochemical battery cell including an anode member, a cathode pellet and a liquid electrolyte disposed in the battery enclosure;
an operable electronic circuit electrically coupled to the electrochemical battery cell, electrically coupled to a medical electrical lead, and wherein said operable electronic circuit is mechanically coupled between the inner surface of the second shell and the cover of the battery enclosure and a majority of the operable electronic circuit is coupled to a deformable, flexible circuit substrate; and
a hermetic seal comprising a standing edge weld joint between the substantially straight peripheral wall portion of the cover and either the first or the second substantially straight peripheral wall portions of the first shell.
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Specification