A medical battery manufacturer needed a high reliability titanium glass-to-metal seal battery lid for a new implantable medical battery. Working closely with our customer on the seal design, Hermetic Seal Technology (HST) engineers helped the customer design a robust battery lid which meet or exceeded the battery seal requirements.
As a titanium body hermetic seal was chosen by the customer, HST’s “clean seal” technology could be used which allows oxide free sealing of titanium and other difficult to seal metals. HST has special purpose furnace equipment, using multiple temperature zones and inert or reducing atmospheres to produce precision oxide-free seals. The equipment allows exact control of temperature and process gas conditions giving a robust and repeatable seal with a high level of hermeticity and operating performance. The “clean seal” process eliminates any chemical or mechanical post cleaning of the glass seal. Chemical cleaning can erode tight machining tolerances and can etch the glass and body of the seal potentially effecting seal quality.
Hermetic Seal Technology’s 100% hermetic testing of each and every glass to metal seal it producesguarantees a truly leak tight battery seal. Additionally, each medical battery seal is 100% visually inspected under 15x high magnification to ensure the highest quality seal giving our customer additional confidence in the glass-to-metal seal for their critical medical application.