Patent ID: 8784389
Filing Date: 2014-07-22
Classification: A61M

Abstract:
1. A gas replenishing apparatus for replenishing gas in a subcutaneously implanted medical device containing functional cells comprising: at least one needle capable of penetrating the skin and connecting to the subcutaneously implanted medical device; a gas tank holding gas for replenishing gas in said implanted device; a gas handling sub-system capable of supplying gas from said gas tank into a gas reservoir in said implanted device; at least one gas sensor selected from: an oxygen sensor sensing oxygen level in gas extracted from said reservoir; and a pressure transducer measuring pressure in said reservoir; and a processor for controlling said gas handling sub-system in response to reading of said at least one of said oxygen sensor and said pressure transducer, wherein said gas is capable of extracting gas from said gas reservoir; and said processor is capable of controlling said gas handling sub-system in response to sensed oxygen level in gas extracted from said gas reservoir; wherein said gas handling sub-system comprises a gas pump for extracting gas from said gas reservoir.