Depuy International Limited

Brainlab Ag

Depuy Products, Inc.

Imorphics Limited

Depuy Orthopadie Gmbh

Dupuy Orthopadie Gmbh

Johnson & Johnson Medical Gmbh

Michal Slomczykowski

Thorsten M Burger

Alec Paul Birkbeck

Ian Crawford Revie

Alan Ashby

Graham Richard Vincent

Ian Michael Scott

Harald Bornfleth

D Steven Block

Frank Foley

Marcellino Maheson

Stefan Henning

Magnus E Flett

Monika Hobelsberger

Roger Oakeshott

Francois Urvoy

Jörg Hächler

Michael Anthony Bowes

Ulrich Spaelter

Mike Bartelme

A surgical instrument system includes a tool () including an elongate shaft which defines the tool axis. The shaft bears a plurality of marker rings () arranged in a predetermined pattern on the surface of the shaft so that they extend around the shaft axis. The system includes at least two receiving devices () which are spaced apart for receiving stereoscopic signals from the rings on the tool, and a data processor () for analyzing the signal from the rings and generating information relating to the position and orientation of the tool relative to the receiving device.

Method of cutting for use in surgery

A computer assisted surgery method and apparatus for determining a change in a property of a joint of a patient caused by an arthroplasty procedure is described. The relative position of a first bone and a second bone of the joint is determined with the joint in a first position. The position of a pre-operative center of motion of the joint relative to the first bone is determined. The position of the second bone relative to the pre-operative center of motion is determined using the relative position of the first and second bones. The position of a post-operative center of motion resulting from a prosthetic component to be used in the joint is determined. The position of the second bone relative to the post-operative center of motion is determined. Any change in the property of the joint. is determined from the difference between the position of the second bone relative to the pre-operative center of motion and the position of the second bone relative to the post-operative center of motion.

Surgical apparatus and procedure

An alignment guide for guiding the positioning of an acetabular cup implant includes a body having a first end and a second end. A flange extends from the first end and is adapted to rest on a labrum of an acetabulum. At least a first formation is provided at the second end which is adapted to engage with a transverse acetabular ligament of the acetabulum. A formation for accepting a trackable instrument is provided to allow a tracking system to determine the orientation of the guide.

Acetabular alignment guide

A method for producing a customized surgical instrument or prosthesis for a specific patient is described. At least one x-ray image of a body part of the patient is captured. A statistical model having a dense set of anatomical correspondence points across the model is instantiated using image data derived from the at least one x-ray image to generate a patient specific model of the body part having a high accuracy surface. Patient specific data from the patient specific model is used to generate a design of the customized surgical instrument or prosthesis for use in a surgical procedure to be carried out on the body part. The surgical instrument or prosthesis is then manufactured using the design. A computer implemented method for generating the patient specific model of the body part is also described.

Customised surgical apparatus

A planning method and device for knee implants, wherein spatial data on the configuration of a patient's genicular anatomy, in particular of at least a part of the femur and/or the patella and/or the tibia, are captured in order to be inputted into a computer-assisted planning station; the movement of the parts of the genicular anatomy is recorded using a tracking and/or motion capturing method; the captured anatomical and movement data are made available to the computer-assisted planning station; a part of the patient's genicular anatomy is virtually replaced in the planning station by a sample implant and movements of the knee together with the sample implant are simulated; contact and impingement between the non-replaced parts of the genicular anatomy and the implant during the virtual movement is ascertained according to its magnitude; and wherein an adjustment of the positioning, shape or orientation of the implant or of a number of these parameters is determined until the contact and impingement become non-critical and the adjustment thus determined is defined as a suitable adjustment.

Planning method and planning device for knee implants

A method of performing a computer-assisted orthopaedic procedure includes securing a sensor support instrument to the patient's bone. A number of sensors are secured to the support instrument. A computer-assisted orthopaedic surgical instrument is also disclosed.

Method and apparatus for performing a computer-assisted orthopaedic procedure

Growing community of inventors

Buchrain, Switzerland

Michal Slomczykowski