Hermetic Encapsulation


Our ceramic encapsulation technology is the first packaging solution for implants with a very high channel count available on the market. Designed according to your requirements it ensures a long-term protection of the implant electronics.

Key Winning Features

High Channel Count

Thick film technology enables hundreds of electrical feedthroughs — unlike conventional titanium packages with metal pin feedthroughs.


Electromagnetic Transparency

The ceramic encapsulation is transparent to electromagnetic waves facilitating communication via radio frequency or infrared as well as inductive powering.


Mechanical Robustness

CorTec´s ceramic packages are designed to survive mechanical impact as for example required for cochlear implants according to EN 45502-2-3:2010 and ISO 14708-7:2013.


Superior Hermeticity

Protection of electronics against moisture works 10 times longer compared to standard titanium packages — even for small implant volumes below 1 cm3. Lifetime is extendable by additional application of desiccants.


Freedom of Design

CorTec´s ceramic encapsulations allow application-specific shapes and designs.

Design Options


  • Circular, oval, or rounded-edge rectangular designs
  • Ceramic packages are molded in silicone rubber in application-specific shapes


  • Minimum height: 2 mm
  • Variable lateral dimensions: maximum footprint of 80 mm x 80 mm

Feedthrough Dimensions and Spacing

  • Feedthroughs come as metal tracks on ceramic base substrate
  • Minimum track width: 0.08 mm
  • Minimum pitch: 0.2 mm
  • Minimum pad area: 0.1 mm x 0.5 mm

Hermetic Sealing in Controlled
Helium Environment

  • Elaborated cleaning & drying procedure minimizes trapping of water

molecules inside the package before sealing

  • Packages are sealed in 100% helium atmosphere permitting

the best possible lifetime prediction based on helium leakage measurements


Customized Telemetric Coils

  • Hand-crafted high precision coils
  • Materials: Gold or copper
  • Up to 50 windings
  • Adaptation to the needs of customer-specific inductive power and data interfaces

Medical Grade Silicone Rubber Shell

  • Customized void-free silicone molding
  • Structural and surface biocompatibility

Connects to Other Products

  • AirRay™ electrodes
  • Commercially available implantable connectors


In Contact with the Body

  • Smooth implant shell and cables made of medical grade silicone rubber.
  • All other materials such as the ceramic encapsulation, the feedthroughs, and the metal seal for the package are covered by this silicone shell.


  • Selected designs pass the pendulum hammer test method Eha according to IEC 60068-2-75:1998 – 2.5 J impact.
  • Helium fine leak testing for hermeticity:

Extremely low leak rates qualify our packages for rejection thresholds below 10(-10) mbar l s(-1).

Related Services

  • Device design and preliminary studies
  • Tests and validations incl. technical documentation
  • Assembly and packaging of customer electronics
  • Interconnection technologies
  • Functionality testing
  • Hermeticity qualification (He-leak testing)
  • Customized silicone rubber mold design and processing
  • Validated cleaning procedures

Sales Contact

You are interested in this product? You would like to have a different product configuration?

Contact us:


+49 761 8976 945 20


Through our quality management system, we meet the highest requirements of the applicable standards.

CorTec is DIN EN ISO 13485 certified and has high-class clean rooms.

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All information about our technologies at a glance:

Click here to download our new CorTec Business Catalogue