Methods and apparatus to form biocompatible energization primary elements for biomedical device

Patent metadata

Field	Value
Publication number	US-10558062-B2
Application number	US-201715591387-A
Country	US
Kind code	B2
Filing date	May 10, 2017
Priority date	Aug 21, 2014
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

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.

First claim

What is claimed is:

1. A biocompatible energization element comprising:
a cathode spacer layer;
a first hole located in the cathode spacer layer;
a first current collector coated with anode chemicals, wherein the first current collector is attached to a first surface of the cathode spacer layer, and wherein a first cavity is created between sides of the first hole and a first surface of the first current collector coated with anode chemicals;
a separator layer, wherein the separator layer is formed within the first cavity after a separator precursor mixture is dispensed into the cavity;
a second cavity between an outside surface of the separator layer upon sides of the first hole and a first surface of the separator layer, wherein the first surface of the separator layer is the top of the separator layer at the bottom of the first cavity, wherein the second cavity is filled with cathode chemicals;
a second current collector, wherein the second current collector is in electrical connection with the cathode chemicals; and
an electrolyte comprising electrolyte chemicals, wherein the cathode chemicals, anode chemicals and electrolyte chemicals are formulated for a single discharging cycle of the energization element.

2. The biocompatible energization element of claim 1 wherein the separator layer comprises hydroxyethylmethacrylate, ethylene glycol dimethylacrylate and polyvinylpyrrolidone.

3. The biocompatible energization element of claim 2 wherein the cathode chemicals comprise a mixture approximately of 1.5 parts 10 percent PIB B50 in toluene to 2.3 parts additional toluene to 4.9 parts of a mixture comprising approximately 80 percent jet milled electrolytic manganese dioxide to 20 percent KS6 primary synthetic graphite, wherein the anode chemicals comprise electrodeposited zinc, and wherein the electrolyte comprises zinc chloride and ammonium chloride.

4. The biocompatible energization element of claim 3 wherein the biocompatible energization element is electrically connected to an electroactive element within a biomedical device.

5. The biocompatible energization element of claim 4 wherein the biomedical device is an ophthalmic device.

6. The biocompatible energization element of claim 5 wherein the ophthalmic device is a contact lens.

Assignees

• Johnson & Johnson Vision Care

Inventors

• Flitsch Frederick A
• Otts Daniel B
• Pugh Randall B
• Riall James Daniel
• Toner Adam
• Mahadevan Shivkumar

Classifications

• H01M4/26

  Processes of manufacture · CPC title

• G02C7/04

  Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00) · CPC title

• H01M4/0416

  involving impregnation with a solution, dispersion, paste or dry powder (H01M4/0438 takes precedence) · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M2004/028

  Positive electrodes · CPC title