Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS3313289 *Jun 23, 1964Apr 11, 1967Kapral Frank AImplant chamberUS3646616 *Jul 23, 1969Mar 7, 1972Jesse G KeshinProsthesis for implanting around a body duct such as the urethra and method of treating urinary incontinenceUS3699956 *Oct 1, 1970Oct 24, 1972Tecna CorpPercutaneous lead deviceUS3967618 *Mar 6, 1975Jul 6, 1976Alza Corpo