Depuy Ireland Unlimited Co.

Sarah Bushell

Duncan G Young

David Beverland

Stephanie Prince

Jason Naylor

Philippa Withers

Graeme John Dutton

Jamie Atkin

John Bohannon Mason

Patrick Cannon

Tarik Ait Si Selmi

Michael J Brock

Oliver Coultrup

Kristoff Corten

Conor Lowry

Stephen Robinson

Craig Davidson

Phillip Lindeman

Carol Wagner

Jamie Olson

A neck trial () is disclosed. The neck trial has a body () and a neck (). The body has an exterior surface. The neck extends away from the body along a neck axis (). At least one first line () is provided on the exterior surface, which extends in a first direction parallel to an inferior-superior axis of a patient when in use. At least one second line () is provided on the exterior surface, which extends in a second direction parallel to a medial-lateral axis of the patient in use. The number of first lines, or the position of the first line or lines relative to the second line or lines, is indicative of an amount of offset in the medial-lateral direction caused by the neck trial. The number of second lines, or the position of the second line or lines relative to the first line or lines, is indicative of an amount of leg-length in the inferior-superior direction caused by the neck trial. A kit of parts, a trial assembly and a method of trialling a joint of a patient are also disclosed.

Trialling

The invention provides a surgical apparatus for performing a controlled resection of the neck of a femur during a hip replacement procedure, the surgical apparatus comprising: a body portion. The body portion comprises a frame that is mountable on a femoral head of the femur to position the body portion with respect to a centre of the femoral head. The body portion also includes a resection guide for indicating a position of a resection plane on the femoral neck, and an arm extending from the frame and including markings for reading off a femoral head offset. The apparatus also includes a connector for mounting the body portion on an intramedullary rod located in an intramedullary canal of the femur, and for slidably receiving the arm. The connector includes a pointer. The femoral head offset is indicated by reading the position of the pointer relative to the markings on the arm.

Femoral neck resection jig

A femoral trialling kit and method for assessing acetabular cup orientation during a left hip joint surgical procedure and a right hip joint surgical procedure are described. The kit includes a trial femoral head () having an inner wall defining a cavity extending along a head axis and a visual alignment guide on an outer surface of the trial femoral head and a trial femoral neck () having a taper at a free end, the taper being receivable within the cavity. One of the taper and the inner wall has a first anti-rotation feature () and a second anti-rotation feature (), the first anti-rotation feature and the second anti-rotation feature being inclined, and the other of the taper and the inner wall has a third anti-rotation feature (). The trial femoral head is attachable to the trial femoral neck in a first angular configuration corresponding to a right hip joint, in which the third anti-rotation feature and the first anti-rotation feature engage, and a second angular configuration corresponding to a left hip joint, wherein the third anti-rotation feature and the second anti-rotation feature engage.

Femoral trialling kit and assembly

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

The invention provides a surgical device for performing a controlled resection of the neck of a femur during a hip replacement procedure. The surgical device comprises a body portion having: a frame comprising an aperture dimension for receipt of a femoral head of the femur to position the body portion with respect to a centre of the femoral head; a resection guide for indicating a position of a resection plane on the femoral neck, and an arm extending between the frame and the resection guide. The body portion includes a linear alignment surface for alignment with a femoral shaft axis of the femur while the frame is mounted on the anterior or posterior aspect of the femoral head.

Femoral neck resection guide

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

Growing community of inventors

Sheffield, United Kingdom

Sarah Bushell