Connection of a prosthesis structure with an implant structure

摘要

A connection device includes a holding shell and a retention insert. The retention insert has an end side and a substantially ring-shaped retention rim projecting therefrom. The holding shell has an end side and a substantially ring-shaped holding rim projecting therefrom. An outer surface of the retention rim is at least partly spaced from and adjacent to an inner surface of the holding rim when the retention insert is arranged in the holding shell and when essentially no radial forces are acting on the holding rim and on the retention rim. In that the outer surface of the retention rim and inner surface of the holding rim are at least partly not contacting each other when essentially no radial forces are acting, it can be achieved that the retention insert is connected relatively loosely with the holding shell when the connection device has not yet been placed on the implant structure.

主权项

1. A connection device (3: 37) for connecting a prosthesis structure with an implant structure or capped tooth, both having a head suitable for a snap engagement connection, said connection device comprising;
a holding shell (2; 27) and a retention insert (1, 17; 18; 19), wherein said retention insert (1; 17; 18; 19) has an end side (12; 127; 128; 129) and a substantially ring shaped retention rim (11; 117; 118; 119) projecting therefrom; wherein said holding shell (2; 27) has an end side (22; 227) and a substantially ring shaped holding rim (21; 217) projecting therefrom; wherein said holding rim (21; 217) and said end side (22; 227) of said holding shell (2; 27) form a retainer in which said retention insert (1; 17; 18; 19) can be arranged such that an outer surface (114; 1147; 1148; 1149) of said retention rim (11; 117; 118; 119) of said retention insert (1; 17; 18; 19) is adjacent to an inner surface (212; 2127) of said holding rim (21; 217) of said holding shell (2; 27); wherein said retention rim (11; 117; 118; 119) of said retention insert (1; 17; 18; 19) has a projection (13; 137; 138; 139) projecting radially from said outer surface (114; 1147; 1148; 1149) of said retention rim (11; 117; 118; 119) of said retention insert (1; 17; 18; 19) and said holding rim (21; 217) of said holding shell (2; 27) comprises a corresponding groove (23; 237) extending radially from said inner surface (212; 2127) of said holding rim (21; 217) of said holding shell (2; 27); wherein said projection (13; 137; 138; 139) of said retention rim (11; 117; 118; 119) of said retention insert (1; 17; 18; 19) is arrangeable in said groove (23; 237) of said holding rim (21; 217) of said holding shell (2; 27) and said outer surface (114; 1147; 1148; 1149) of said retention rim (11; 117; 118; 119) of said retention insert (1; 17; 18; 19) is at least partly spaced from and adjacent to said inner surface (212; 2127) of said holding rim (21; 217) of said holding shell (21; 217), such that said retention insert (1; 17; 18; 19) is releasably held in said retainer of said holding shell (2; 27), defining a first position where said head is not inserted in the retention insert and the retention insert is removable from said holding shell; and wherein said retention insert (1; 17; 18; 19) is radially expandable by a radial force acting on said retention rim (11; 117; 118; 119) in the direction of said holding rim (21; 217) of said holding shell (2; 27) by insertion of said head into said retention insert, defining a second position, wherein in said second position, said projection of said retention rim of said retention insert is moved further into and in the direction of said groove of said holding rim of said holding shell and spacing between said retention rim of said retention insert and said inner surface of said holding rim of said holding shell is reduced, and the retention insert is firmly held in and is not removable from said holding shell.