US 2016/0354092 A1Published application

Arthroplasty Jigs with Mating Accuracy

AssigneeHowmedica Osteonics Corp.

InventorIlwhan Park

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Abstract

Disclosed herein is a method of defining a mating surface in a first side of an arthroplasty jig. The mating surface is configured to matingly receive and contact a corresponding patient surface including at least one of a bone surface and a cartilage surface. The first side is oriented towards the patient surface when the mating surface matingly receives and contacts the patient surface. The method may include: a) identifying a contour line associated with the patient surface as represented in a medical image; b) evaluating via an algorithm the adequacy of the contour line for defining a portion of the mating surface associated with the contour line; c) modifying the contour line if the contour line is deemed inadequate; and d) employing the modified contour line to define the portion of the mating surface associated with the contour line.

Claims16

Dependent claims

A tibial arthroplasty jig for assisting in the performance of a tibial arthroplasty procedure on an arthroplasty target region of a tibia of a patient knee joint, the tibia including a tibial shaft, a tibial plateau edge, a tibial tuberosity, and the arthroplasty target region, wherein the tibial shaft near the patient knee joint includes a shaft surface on an anterior side of the tibial shaft, the shaft surface being distal of the tibial plateau edge and generally proximal of the tibial tuberosity, the arthroplasty target region including a tibial plateau including a medial articular plateau surface and a lateral articular plateau surface, the tibial arthroplasty jig comprising:

a first mating surface configured to matingly contact the shaft surface when the tibial arthroplasty jig is applied to the tibia to perform the tibial arthroplasty procedure on the arthroplasty target region,
wherein the first mating surface comprises a surface negative of the shaft surface and the first mating surface exists in the tibial arthroplasty jig at least as early as the tibial arthroplasty jig being completely manufactured.

Dependencies are inferred from the claim text.

Facts

Application: 15/242,312Filed 19 Aug 2016
Priority: 23 Jul 2008
Published: 8 Dec 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61B 34/10
Computer-aided surgery; Manipulators or robots specially adapted for use in surgery: computer-aided planning, simulation or modelling of surgical…
A61B 17/15
Surgical saws: guides therefor
A61B 17/155
For preparing bone for knee prosthesis: cutting femur
A61B 17/157
For preparing bone for knee prosthesis: cutting tibia

Family

Application61/083,053Us provisional application · filed 23 Jul 2008
Application12/505,056Division · filed 17 Jul 2009
Application13/731,850Continuation · filed 31 Dec 2012
Application14/476,500Division · filed 3 Sep 2014
Application15/242,312Division
Application14/476,500Continuation
Application13/731,850Division
US 2010/0023015 A1Published application
US 2013/0123789 A1Published application
US 2014/0378978 A1Published application
US 8,777,875 B2Related patent
US 8,961,527 B2Related patent
US 9,451,970 B2Related patent
US 9,636,120 B2Related patent
US 2016/0354092 A1This patent

From the US filing history. Foreign family members aren’t listed.

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