Self-sealing injection reservoir
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United States of America Patent
Stats
-
Apr 19, 1988
Grant Date -
N/A
app pub date -
Sep 30, 1985
filing date -
Sep 30, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An injection reservoir or button is disclosed which is adapted for implantation beneath the skin of human and animal patients in conjunction with tissue expanders and drug delivery devices. The injection reservoir includes a base and an exterior wall which define a chamber or liquid reservoir. A suitable duct connects the chamber with an expandable bag of the tissue expander. An elastic rubber member is affixed within the interior of the chamber in a configuration wherein its side abutting the chamber is in compression, thereby rendering the member self-sealing to punctures by a hypodermic needle. A metal guard plate is included within the interior of the chamber to guard the base against accidental puncture by an over-extended hypodermic needle.
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