US 9,750,514 B2Granted

X-ray based cutblock positioning jig

AssigneeBiomet Manufacturing, LLC

InventorsBrian A. Uthgenannt, Robert Metzger

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Abstract

A cut block positioning jig including a first alignment member, a second alignment member, and both first and second guide members. The first alignment member is movable towards and away from a patient's bone to which the positioning jig is mounted to arrange the jig at a predetermined position relative to the bone based on x-rays of the patient. The second alignment member is movable towards and away from the bone to arrange the jig at the predetermined position relative to the bone. The first and second guide members are configured to direct cut block support members to the bone to couple a cut block to the bone to provide the bone with patient-specific cuts.

Claims11

Dependent claims

A method for preparing a knee joint of a patient to receive an implant comprising:

determining knee bone cuts in a knee bone for positioning the implant in a patient-specific orientation based on an x-ray of the patient, wherein determining includes identifying patient specific characteristics of the knee bone including one or more of an anterior cortex of the diaphysis of a femur, a flexion/extension gap of the knee joint, and a desired varus/valgus alignment of the knee joint;
and
arranging a positioning guide on the knee bone at a predetermined position therefrom by setting one or more alignment members of the guide to a predetermined setting as determined by a preoperative plan for use of the positioning guide, the positioning guide is configured to direct one or more fixation members to the knee bone sufficient to mount a cut block to the knee bone in a position suitable to guide a cutting device to the knee bone to make one or more desired knee bone cuts.

A method for preparing a knee joint of a patient to receive an implant comprising:

identifying an anterior cortex of a diaphysis of a patient's femur based on an x-ray of the patient;
determining one or more of a proper flexion/extension gap, varus/valgus alignment, and a tibial slope of rotation of the knee joint based on the x-ray of the patient;
determining knee bone cuts in the knee bone for positioning the implant in a patient-specific orientation based on one or more of a location of the anterior cortex, the flexion/extension gap, the varus/valgus alignment, and the tibial slope of rotation of the knee joint;
and
arranging a positioning guide on the knee bone at a predetermined position therefrom by setting one or more alignment members of the guide to a predetermined setting as determined by a preoperative plan for use of the positioning guide, the positioning guide is configured to direct one or more fixation members to the knee bone sufficient to mount a cut block to the knee bone in a position suitable to guide a cutting device to the knee bone to make one or more desired knee bone cuts.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/424,267Filed 3 Feb 2017 · continuation
Priority: 15 Aug 2013
Published: US 2017/0143354 A125 May 2017
Granted: 5 Sep 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

A61B 17/1764
Specially adapted for particular parts of the body: for the knee
A61B 17/154
Guides therefor: for preparing bone for knee prosthesis
A61B 17/155
For preparing bone for knee prosthesis: cutting femur
A61B 17/157
For preparing bone for knee prosthesis: cutting tibia

Family

Application13/967,717Parent of this continuation · filed 15 Aug 2013
Application14/746,104Parent of this continuation · filed 22 Jun 2015
US 2017/0143354 A1Pre-grant publication · published 25 May 2017
US 9,597,097 B2Parent of this continuation
US 9,060,786 B2Parent of this continuation
US 2015/0051602 A1Published application
US 2015/0351781 A1Published application
US 9,750,514 B2This patent

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

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