“Hermetically Sealed”

A hermetically sealed, fluid-filled surgical enclosure for microgravity.

INTRODUCTION Expeditionary spaceflight is fraught with significant risks to human health, including trauma and other emergency medical events. To address several of the basic challenges of surgical care in reduced gravity, we are developing the Aqueous Immersion Surgical System (AISS), an optically clear enclosure pressurized by a fluid medium. The AISS is designed to prevent contamination of t...

Design of Refrigerant Compressor with Hydraulically Coupled,Hermetically Sealed Linear Drive

Substitution of a metallic diaphragm for the power piston of a Stirling engine is shown to be a promising approach to transmitting power for a heat-actuated heat pump through a hermetic seal. Hydraulic fluid under high pressure transfers the power from the diaphragu to the compressor plunger, which is balanced by a counterweight. The discussion is divided into three parts which deal with the in...

Testing the Integrity of Liquid Containing Hermetically Sealed Containers by the Use of Radioactive Markers

Investigation of hermetically sealed commercial LiNbO3 optical modulator for use in laser/LIDAR space-flight applications

This paper is the first in a series of publications to investigate the use of commercial-off-the-shelf (COTS) components for space flight fiber laser transmitter systems and LIDAR (laser imaging detection and ranging) detection systems. In the current study, a hermetically sealed COTS LiNbO3 optical modulator is characterized for space flight applications. The modulator investigated was part of...

Continuously Operating Biosensor and Its Integration into a Hermetically Sealed Medical Implant

An integration concept for an implantable biosensor for the continuous monitoring of blood sugar levels is presented. The system architecture is based on technical modules used in cardiovascular implants in order to minimize legal certification efforts for its perspective usage in medical applications. The sensor chip operates via the principle of affinity viscometry, which is realized by a ful...