Biomedical energization elements with polymer electrolytes and cavity structures

Patent metadata

Field	Value
Publication number	US-9941547-B2
Application number	US-201514949963-A
Country	US
Kind code	B2
Filing date	Nov 24, 2015
Priority date	Aug 21, 2014
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

Designs, strategies and methods to form energization elements comprising polymer electrolytes are described. In some examples, the biocompatible energization elements may be used in a biomedical device. In some further examples, the biocompatible energization elements may be used in a contact lens.

First claim

What is claimed is:

1. A biomedical device comprising:
an electroactive component;
a curvilinear shaped biocompatible battery, wherein the curvilinear shape is a portion of an annulus and components of the battery are shaped to accommodate the curvilinear shape, wherein the battery includes:
an anode current collector;
a cathode current collector;
an anode;
a polymer electrolyte comprising poly(vinylidene) fluoride in a gel form, wherein the polymer electrolyte gel improves the biocompatibility of the battery, wherein the polymer electrolyte gel does not contain a component available to leak out of the biocompatible battery, and wherein the polymer electrolyte comprises an ionic species of zinc;
manganese dioxide cathode;
a first laminate layer comprising a first cavity, wherein the first cavity contains an amount of the polymer electrolyte; and
a second laminate layer comprising a second cavity, wherein the second cavity contains an amount of the manganese dioxide cathode; and

a first biocompatible encapsulating layer, wherein the first biocompatible encapsulating layer encapsulates at least the electroactive component and the battery, and wherein the biocompatible encapsulating layer comprises a silicone hydrogel.

2. The biomedical device of claim 1 ,
wherein the anode comprises zinc; and
wherein the anode and the anode current collector are a single layer.

3. The biomedical device of claim 1 , wherein the composition of the manganese dioxide cathode comprises jet milled electrolytic manganese dioxide.

4. The biomedical device of claim 3 , wherein the composition of the manganese dioxide cathode comprises poly(vinylidine fluoride).

5. The biomedical device of claim 4 , wherein the composition of the manganese dioxide cathode comprises carbon black.

6. The biomedical device of claim 5 , wherein the zinc anode is a foil of zinc.

7. The biomedical device of claim 1 , wherein the battery comprises a seal in encapsulating films that enclose more than 90 percent of the battery portions not used for making external contacts.

8. The biomedical device of claim 1 , wherein the thickness of the battery is less than 1 mm at least along a first dimension of the extents of the battery.

9. The biomedical device of claim 1 , wherein the thickness of the battery is less than 500 microns at least along a first dimension of the extents of the battery.

10. The biomedical device of claim 1 , wherein the thickness of the battery is less than 250 microns at least along a first dimension of the extents of the battery.

Assignees

• Johnson & Johnson Vision Care

Inventors

• Flitsch Frederick A
• Muthu Millburn Ebenezer Jacob
• Otts Daniel B
• Pugh Randall B
• Riall James Daniel
• Toner Adam

Classifications

• H01M10/0436

  Small-sized flat cells or batteries for portable equipment · CPC title

• G02C7/04

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

• H01M2002/0205

  Electricity · mapped topic

• H01M4/502

  for non-aqueous cells (H01M4/505 takes precedence) · CPC title

• H01M6/181

  with polymeric electrolytes · CPC title