Patent ID: 8398650
Filing Date: 2013-03-19
Classification: A61F

Abstract:
1. An inserter for aiding a surgeon in controlling the installation of a prosthesis cup, the inserter comprising: a) a housing extending from a proximal housing end to a distal housing end; b) a nose supported at the distal housing end with a bore extending longitudinally through the nose, wherein the nose comprises an outer ramping surface extending distally and inwardly toward the bore from a proximal nose end adjacent to the housing to a distal nose end; c) an expandable dome having comprising a dome length extending distally and inwardly from a proximal end adjacent to the housing to an apex of the dome, wherein the inner dome surface comprises a coping surface extending from the proximal end part way along the dome length toward the apex, the dome being supported on the nose with the inner coping surface contacting the outer ramp surface of the nose; d) an O-ring supported in an annular groove provided in the outer dome surface; e) a drive train at least partially housed inside the housing, the drive train comprising: f) wherein the second lever proximal end is manipulable from a first position spaced from the housing to a second position spaced closer to the housing than the first spaced position to cause the second lever to pivot with respect to the housing and thereby move the second lever distal end away from the distal housing end and to further cause the first lever to move away from the distal housing end along the first opening in the first sleeve as the first sleeve pivots on the housing to thereby cause the drive rod to move along the longitudinal bore in the nose with the drive rod distal end connected to the dome moving from a first drive rod position spaced from the nose to a second drive rod position closer to the nose than the first drive rod position to thereby cause the inner coping surface of the dome to move proximally against the outer ramp surface of the nose to thereby cause the dome supporting the O-ring to both expand from a first, unexpanded state to a second expanded state.