Ceramic, Titanium, and Sapphire Enclosures for Multi-Decade Implantation

Preventing saline moisture penetration into high-voltage intracranial electronics.

Sapphire-to-Titanium Brazing

Radio transparency requires non-metallic windows. High-purity monocrystalline sapphire disks are vacuum-brazed to titanium rings using gold-nickel alloys, passing helium leak tests below 1e-9 atm*cc/s.

Internal Humidity Sensor Telemetry

Capacitive moisture sensors inside the vacuum cavity monitor moisture ingress over years, alerting clinical teams before corrosion can cause circuit malfunctions.

Helium leak rates lower than 10^-9 atm-cc/sec exceeding military specifications
Platinum-iridium feedthrough pins with zero cross-pin leakage currents
Poly-p-xylylene (Parylene-C) internal conformal barrier coating

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