| 主权项 |
1. An inserter system for aiding a surgeon in controlling the installation of a prosthesis cup, the inserter system comprising:
a) a prosthesis engaging assembly, comprising: i) an impaction plate comprising an impactor plate central region having a through bore aligned along a longitudinal axis, wherein a plurality of inlets extend from a perimeter of the impaction plate toward, but ending spaced from the impaction plate through bore; ii) a grasping plate positioned along the longitudinal axis distal the impaction plate, wherein the grasping plate is of a unitary, one-piece construction comprising a grasping plate central region rigidly supporting at least two spaced apart and outwardly extending grasping legs, wherein the grasping plate central region surrounds a grasping plate bore in co-axial alignment with the impactor plate through bore, and wherein each of the grasping legs extends from a rigid connection at the grasping plate central region to a distal grasping leg portion, wherein one of the distal grasping leg portions is aligned with a respective one of the impaction plate inlets; and iii) a spring disposed between the impaction plate and the grasping plate; b) an inserter, comprising: i) a housing comprising a proximal housing end and a distal housing end supporting the impaction plate; and ii) a drive train at least partially housed inside the housing, the drive train extending through the impaction plate bore and being releasably connectable to the grasping plate at the grasping plate bore; and c) a prosthesis cup comprising at least two spaced apart outer grooves adjacent to a perimeter of a rim of the cup; d) wherein the prosthesis cup is positionable adjacent to the grasping plate and then the prosthesis cup and the at least two grasping legs rigidly connected to the grasping plate are relatively rotatable with respect to the longitudinal axis of the grasping plate to thereby cause a distal grasping leg portion of one of the grasping legs to rigidly engage with a respective one of the outer grooves of the cup; and e) wherein the drive train is then actuatable along the impaction plate bore to thereby draw the grasping plate including the rigid grasping legs engaging the cup in a proximal direction against a bias of the spring from a first position spaced from the impaction plate to a second position contacting the impaction plate with at least a portion of the rigid grasping legs received in respective ones of the impaction plate inlets so that the housing, impaction plate, grasping plate and cup are in rigid contact alignment. |
