Methods and apparatus to form separators for biocompatible energization elements for biomedical devices

Patent metadata

Field	Value
Publication number	US-9715130-B2
Application number	US-201514687384-A
Country	US
Kind code	B2
Filing date	Apr 15, 2015
Priority date	Aug 21, 2014
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

Methods and apparatus to form biocompatible energization elements are described. In some examples, the methods and apparatus to form the biocompatible energization elements involve forming cavities composing active cathode chemistry. The active elements of the cathode and anode are sealed with a biocompatible material. In some examples, a field of use for the methods and apparatus may include any biocompatible device or product that requires energization elements.

First claim

What we claim is:

1. A biocompatible energization element comprising
a laminate assembly comprising:
a gap spacer layer;
a cathode spacer layer;
a cathode contact layer;
a separator layer;
at least a first hole in the cathode spacer layer forming a cavity between sides of the hole, the cathode spacer layer and the separator layer, wherein the cavity is filled with cathode chemicals; and
wherein the separator layer is comprised of a permeable silicone hydrogel membrane, wherein the permeable hydrogel membrane is comprised of a polymerized mixture comprising:
hydroxyethylmethacrylate (HEMA);
ethylene glycol dimethylacrylate (EGDMA);
polyvinylpyrrolidone (PVP); and
isopropyl alcohol (IPA).

Assignees

• Johnson & Johnson Vision Care

Inventors

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

Classifications

• H01M50/489

  Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties · CPC title

• H01M50/414

  Synthetic resins, e.g. thermoplastics or thermosetting resins · CPC title

• A61L31/06

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds {(A61L31/041 takes precedence)} · CPC title

• B29L2011/0041

  Contact lenses · CPC title

• A61L31/145

  Hydrogels or hydrocolloids · CPC title