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Vacuum formed PEEK tray

IP.com Disclosure Number: IPCOM000242569D
Publication Date: 2015-Jul-27
Document File: 1 page(s) / 20K

Publishing Venue

The IP.com Prior Art Database

Abstract

Problem being addressed: • Batteries used in implantable devices may need to be thermally and electrically isolated from the surrounding casing. • The contents of the cavity in which the battery resides needs to have very low moisture absorption in order to facilitate an acceptable level of residual moisture in the battery cavity after hermetisation. • The battery needs to be securely held in position to prevent movement in all directions during service.

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Summary of Invention

Problem being addressed:

·         Batteries used in implantable devices may need to be thermally and electrically isolated from the surrounding casing.

·         The contents of the cavity in which the battery resides needs to have very low moisture absorption in order to facilitate an acceptable level of residual moisture in the battery cavity after hermetisation.

·         The battery needs to be securely held in position to prevent movement in all directions during service.

State of technology:

·         Insulation is typically performed by applying an insulative material to the outside of the battery by adhesive (e.g. sticky Kapton tape) or coating (e.g. parylene, dip coated silicone) or other method.

·         Moisture is typically controlled by a high temperature bake prior to sealing or the use of chemical moisture getters.

·         Positional restraint of the battery is typically done by using adhesives or machined fixation components.

Solution to the problem:

The above problems can be solved by using formed Polyether ether ketone (PEEK) trays to surround the battery. Typically such trays would be vacuum formed from sheet PEEK material.

The vacuum formed PEEK trays provide solutions to all the design criteria in an effective and low cost way:

·         The tray provides complete electrical insulation without the issue related to other methods such as insulative tapes or coatings (e.g. exposed bits of battery due to operator error, coatings coming loose or being scratched off, need to pre-trea...