Hermetic sealing method for a battery fillport using sealing member
AssigneeMedtronic, Inc.
InventorsDoug Morelli, Bernard Frank Heller, Jr.
Life of this patent
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Abstract
A method of manufacturing an energy storage device for a medical device that includes creating an aperture in a case. The aperture includes an inner surface. The method also includes introducing an electrolyte into the case through the aperture and moving a sealing member into the aperture. The sealing member includes an outer surface. Furthermore, the method includes sealing the aperture only with the sealing member and creating a substantially hermetic seal between the inner surface of the aperture and the outer surface of the sealing member.
Claims29
A method of manufacturing an energy storage device for a medical device comprising:
- creating an aperture in a case, the aperture including an inner surface;
- introducing an electrolyte into the case through the aperture;
- and
- moving a sealing member into the aperture, the sealing member including an outer surface, the sealing member being frictionally fitted within the aperture;
- wherein a substantially hermetic seal is formed between the sealing member and the case only by the frictional fit between the outer surface of the sealing member and the inner surface of the aperture, wherein the sealing member within the aperture is the only sealing member and only component used to seal the aperture.
An energy storage device for a medical device comprising:
- a cell assembly;
- a case that houses the cell assembly, the case including an aperture for introducing an electrolyte into the case, the aperture including an inner surface;
- and
- a sealing member with an outer surface that is frictionally fit within the aperture, wherein a substantially hermetic seal is formed between the sealing member and the case only by the frictional fit between the outer surface of the sealing member and the inner surface of the aperture, wherein the sealing member within the aperture is the only sealing member and only component used to seal the aperture.
A method of manufacturing a battery for a medical device comprising:
- creating a through-hole in a battery case having a substantially constant diameter;
- filleting an outer rim of the through-hole;
- chamfering an inner rim of the through-hole;
- introducing an electrolyte into the battery case through the through-hole;
- providing a substantially spherical sealing member having a hardness that is greater than the battery case adjacent the through-hole;
- and
- moving the spherical sealing member into the through-hole to deform the battery case, the sealing member being frictionally fitted within the through-hole wherein a substantially hermetic seal is formed between the sealing member and the case only by the frictional fit between the outer surface of the sealing member and the inner surface of the through-hole, wherein the sealing member within the through-hole is the only sealing member and only component used to seal the through-hole.
Dependencies are inferred from the claim text.