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:
Dec. 16, 2003
Filed:
Sep. 17, 2001
Institut Straumann AG, Waldenburg, CH;
Abstract
The invention relates to a connection between a known dental implant ( ) and a straight or angular abutment ( ) which can be established by means of a base screw ( ) and a support ring ( ). The support ring ( ) is fixedly introduced into the inlet of the abutment ( ) near the lower edge of same, preferably by welding or by bending over of the lower edge of the abutment ( ). Before insertion of the support ring ( ) the base screw ( ) is introduced head first into the inlet ( ) from the side of the root part of the abutment. The base screw is held in the abutment ( ) by the support ring ( ) on which the base screw ( ) rests. The threaded shank ( ) of the base screw ( ) engages the inner thread ( ) provided for in the implant ( ) and draws the abutment ( ) into the receiving hole ( ) of the implant ( ). An angled surface of the base screw ( ) and a beveled surface of the support ring ( ) contact each other so that the welding seam or bent over lower edge of the abutment ( ) are relieved of axial stress. The above connection system is designed especially for implants ( ) with a conical receiving hole ( ) and internal polygon as well as abutments ( ) having a complementary external conical shape and external polygon.