Methods and apparatus to form biocompatible energization primary elements for biomedical devices with electroless sealing layers
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsFrederick A. Flitsch, Millburn Ebenezer Muthu, Randall B. Pugh, Adam Toner, Lawrence Edward Weinstein
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Abstract
Methods and apparatus to form biocompatible energization elements are described. In some embodiments, the methods and apparatus to form the biocompatible energization elements involve forming cavities comprising active cathode chemistry. The active elements of the cathode and anode are sealed with a laminate stack of biocompatible material. In some embodiments, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.
Claims17
A biocompatible energization element comprising
- a gap spacer layer;
- a first hole located in the gap spacer layer;
- a cathode spacer layer, wherein the cathode spacer layer is attached to the gap spacer layer;
- a second hole located in the cathode spacer layer, wherein the second hole is aligned to the first hole, and wherein the second hole is smaller than the first hole such that when the first hole and the second hole are aligned there is a ridge of cathode spacer layer exposed in the first hole;
- a separator layer, wherein the separator layer is placed within the first hole in the gap spacer layer and is adhered to the ridge of cathode spacer layer;
- a cavity between sides of the second hole and a first surface of the separator layer, wherein the cavity is filled with cathode chemicals;
- a first current collector coated with anode chemicals;
- a second current collector, wherein the second current collector is in electrical connection with the cathode chemicals;
- an electrolyte comprising electrolyte chemicals;
- a plated metallic exterior coating, wherein the plated metallic exterior coating comprises a portion that is plated with electroless plating, and wherein the thickness of the plated metallic exterior coating is thick enough to act as a barrier to ingress and egress of moisture from the biochemical energization element;
- and
- wherein the cathode chemicals, anode chemicals and electrolyte chemicals are formulated for a single discharging cycle of the energization element.
Dependencies are inferred from the claim text.