Portable therapeutic system using hot or cold temperature

This invention describes a portable system to apply hot or cold temperatures to a body part. It uses a pad containing a gel packet, which can be heated or cooled by a portable source delivering a medium through a removable tube. The system specifically mentions using liquid nitrogen as a cooling medium.

Why it matters: The inherent safety and logistical challenges of using liquid nitrogen in a portable consumer device remain significant since 2014. No major advancements have simplified its widespread, safe application for personal therapeutic use.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedLiquid nitrogen handling, specialized canister, safety equipment.

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