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US 2010/0063595 A1Published application
Adjustable knee tibial trial insert
AssigneeDePuy Synthes Products, Inc.
InventorTerry L. Dietz
Life of this patent
Estimating the term…
Abstract
An adjustable tibial trial insert includes an upper plate having an upper articular surface and a lower plate. A height-adjustment mechanism of the insert is coupled to and positioned generally between the upper plate and the lower plate and is configured to move between a closed position where the upper and lower plates are adjacent each other and an opened position where the upper and lower plates are spaced-apart from each other in order to adjust a height or thickness of the insert.
Claims2
An adjustable tibial trial insert, comprising:
- an upper plate including an upper articular surface,
- a lower plate including a lower surface configured to engage a top surface of a tibial tray, and
- a height-adjustment mechanism coupled to and positioned generally between the upper plate and the lower plate and configured to move between a closed position where the upper and lower plates are adjacent each other and an opened position where the upper and lower plates are spaced-apart from each other,
- wherein the height-adjustment mechanism includes a drive coupled to the upper plate and the lower plate and an actuator coupled to the drive and to one of the upper and lower plates,
- wherein the actuator includes a knob and a link pivotably coupled to the drive means and coupled to the knob for rotation with the knob.
2 more elements
An adjustable tibial trial insert comprising:
- an upper plate including an upper articular surface,
- a lower plate,
- a height-adjustment mechanism including (i) a drive coupled to the upper plate and the lower plate for moving the upper plate and the lower plate away from each other, (ii) a tie-rod pivotably coupled to the drive, and (iii) an actuator pivotably coupled at a first pivot point to one of the upper plate and the lower plate and pivotably coupled to the tie-rod at a second pivot point spaced-apart from the first pivot point,
- wherein (i) the drive of the height-adjustment mechanism includes a linkage pivotably coupled to the upper plate and the lower plate, and (ii) the linkage includes a first link coupled to the upper plate and the tie rod and a second link coupled to the lower plate, the tie rod, and the upper link.
1 more element
Dependencies are inferred from the claim text.