Self-sealing injection reservoir

Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...

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Details

604244, 128899, 623 8, A61M 2500, A61B 1900

Patent

active

047985844

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.

REFERENCES:
patent: 3640269 (1972-02-01), Degado
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patent: 4190040 (1980-02-01), Schulte
patent: 4217889 (1980-08-01), Radouan
patent: 4364395 (1982-12-01), Redmond
patent: 4400169 (1983-08-01), Stephen
patent: 4405305 (1983-09-01), Stephen et al.
patent: 4428364 (1984-01-01), Bartolo
patent: 4543088 (1985-09-01), Bootman et al.
patent: 4557724 (1985-09-01), Gregonis

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