Depuy Ireland Unlimited Co.

Depuy Ireland Unlimited Company, Loughbeg Industrial Estate

Depuy

Stephanie Prince

Duncan G Young

David Horne

Sarah Bushell

Thomas Maack

James Aaron Reed

Jeffrey A McAnelly

Gary Moore

John Bohannon Mason

Sarah E Radcliffe

Thomas P Schmalzried

Jason Naylor

Lewis Butler

David Beverland

Christopher Hunt

Timothy Board

Neil Woollen

Conor Lowry

Philippa Withers

Jeffrey Mcanelly

Ahmad Jalandari

Elsie Kirby

Kits and methods for use in intraoperative trialling of hip prostheses to determine an appropriate length for the femoral neck component of a prosthetic hip joint, are described. A kit for use in selecting a femoral neck component of an orthopaedic joint prosthesis kit comprises a first and a second broach. Each of the first and second broaches has a neck connection element comprising a projection extending from a proximal surface of the broach, each projection having a length. The projection on the first broach has a different length than the projection on the second broach. The kit also includes a trial femoral neck component having a neck connection element in the form of a recess in a distal surface. The recess is configured to mate with the projection on each of the first or second broaches such that mating of the trial femoral neck component with the first broach provides an assembly with a first neck length, and the mating of the trial femoral neck component with the second broach provides an assembly with a second neck length.

Trial neck

An apparatus and method for aligning an acetabular cup. The apparatus may include an acetabular cup and/or a protractor and/or a depth gauge tool and may be provided in the form of a surgical kit. Components of the apparatus may allow an angle of rotation of an acetabular cup about an axis of the cup relative to an anatomical feature of a patient to be determined when the acetabular cup implant is placed in the acetabulum of the patient. Components of the apparatus may allow an amount of overhang between a rim of an acetabular cup and an edge of the acetabulum to be determined. The acetabular cup may be an acetabular trial cup or and acetabular cup implant. Embodiments of the invention may allow both the angle of rotation about the cup axis and the amount of overhang between the rim and the acetabulum edge to be determined.

Apparatus for aligning an acetabular cup

A trial neck for hip surgery and a method of attaching a trial neck to a bone canal preparation instrument. The trial neck includes a body portion having a bore for receiving a proximal end of the bone canal preparation instrument. The trial neck also includes an elongate neck part comprising a pair of arms extending from the body portion. The trial neck further includes a clamping mechanism comprising a live spring formed by the body portion and said pair of arms of the elongate neck part and an actuator, for moving the clamping mechanism between a clamping configuration and a non-clamping configuration. In the clamping configuration, the pair of arms of the elongate neck part are pinched together to cause an inner wall of the bore to urge against the bone canal preparation instrument to retain the proximal end of the bone canal preparation instrument within the bore.

Trial component and method

The present invention relates generally to the field of orthopedics, and more particularly to a pelvic referencing guide and methods of using the guide in orthopaedic surgery, specifically total hip arthroplasty.

Pelvic referencing guide

Kits and methods for use in intraoperative trailing of hip prostheses to determine an appropriate length for the femoral neck component of a prosthetic hip joint, are described. A kit for use in selecting a femoral neck component of an orthopaedic joint prosthesis kit comprises a first () and a second () broach. Each of the first and second broaches has a neck connection element comprising a projection () extending from a proximal surface () of the broach, each projection having a length (L). The projection on the first broach has a different length than the projection on the second broach. The kit also includes a trial femoral neck () component having a neck connection element in the form of a recess () in a distal surface (). The recess is configured to mate with the projection on each of the first or second broaches such that mating of the trial femoral neck component with the first broach provides an assembly with a first neck length, and the mating of the trial femoral neck component with the second broach provides an assembly with a second neck length.

Apparatus and Method for Hip Surgery. An adjustable trial femoral head () for assessing anteversion of an acetabular cup relative to a pelvis of a patient are described. The adjustable trial femoral head comprises a spherical body () having a bore extending along a polar axis of the spherical body and configured to receive a free end of a femoral neck. A visual alignment guide () is mounted on the at least partially spherical body and the orientation of the visual alignment guide relative to the spherical body is adjustable.

Apparatus for hip surgery

An apparatus and method for aligning an acetabular cup. The apparatus may include an acetabular cup () and/or a protractor () and/or a depth gauge tool () and may be provided in the form of a surgical kit. Components of the apparatus may allow an angle of rotation of an acetabular cup about an axis () of the cup relative to an anatomical feature of a patient to be determined when the acetabular cup implant is placed in the acetabulum of the patient. Components of the apparatus may allow an amount of overhang between a rim () of an acetabular cup and an edge of the acetabulum to be determined. The acetabular cup may be an acetabular trial cup () or and acetabular cup implant (). Embodiments of the invention may allow both the angle of rotation about the cup axis and the amount of overhang between the rim and the acetabulum edge to be determined.

An apparatus and method for measuring a version angle of a restored neck of a femur during a hip replacement procedure. The apparatus includes a broach. The broach has a distal end that is insertable into a medullary canal of the neck of the femur. The broach also has a proximal end that extends along a neck axis of the broach. The apparatus also includes a protractor. The protractor includes a rod which is attachable to the proximal end of the broach to extend away from the neck axis of the broach for measuring the version angle of the restored neck of the femur relative to a vertical direction. The method includes inserting the broach, flexing the knee at approximately ninety degrees, orienting the tibia vertically, attaching the protractor to the proximal end of the broach and using it to measure the version angle.

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Wakefield, United Kingdom

Stephanie Prince