A closure for an open ended medical implant with a pair of spaced arms to maintain a rod or the like in the implant. The closure including a top plate with depending side flanges forming a discontinuous internally threaded ring that is threadably received on the implant in comparatively low profile from...http://www.google.de/patents/US6251112?utm_source=gb-gplus-sharePatent US6251112 - Thin profile closure cap for open ended medical implant
