The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 1989
Filed:
Mar. 14, 1988
John C Hancock, Santa Barbara, CA (US);
William R Dubrul, Santa Barbara, CA (US);
Charles J Heyler, III, Thousand Oaks, CA (US);
McGhan Medical Corporation, Santa Barbara, CA (US);
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.