Depuy Ireland Unlimited Co.

Depuy (ireland)

Depuy International Limited

Depuy Orthopaedics, Inc.

Depuy Orthopadie Gmbh

Kevin D Booth

Duncan J Beedall

Robert R Freeman

Alberto Verteramo

Alberto P Verteramo

Gary Fenton

Michael J Rees

Mark Reason

Liam T Dower

Gordon Dodds

Harald Bornfleth

Dan Auger

An orthopaedic surgical instrument for use in resecting a patient's bone is disclosed. In some embodiments, the instrument may be for single patient use and may be disposed of at the end of each surgical procedure.

Orthopaedic surgical instrument

Orthopeadic surgical instrument

An angular adjustment mechanism for a surgical instrument is described. The mechanism comprises an adjustment member () configured for rotation about a longitudinal axis (), the adjustment member comprising a plurality of pairs of facets () arranged about the longitudinal axis. Each of the plurality of pairs of facets defines a respective angled axis (B,C) at an angle (B,C) relative to the longitudinal axis. A pivoting member () is arranged to pivot about a pivot axis perpendicular to the longitudinal axis and comprises a recess () for receiving the adjustment member and engaging one pair of the plurality of pairs of facets. This provides an angular adjustment mechanism in which facets on the outside of the adjustment member engage corresponding surfaces in a recess on a pivoting member. The use of facets provides a secure connection while allowing a greater degree of angular adjustment and providing a further benefit of simple operation.

Angular adjustment mechanism, surgical alignment guide and surgical instrument assembly

A surgical cutting guide () is described which comprises a body section delimiting a recess () extending into the body section from an external surface. The recess has a central axis and is for receiving an attachment protrusion () from a surgical alignment guide (). The recess comprises: a first portion () having a first constant cross section along the central axis; and a second portion () having a second constant cross section along the central axis which is larger than the first constant cross section. The first and second portions are coaxial with the central axis and the second portion is closer to the external surface than the first portion. This configuration creates a stepped surface in the recess which is engaged by corresponding features on a protrusion of a surgical alignment guide. The attachment protrusion () of the alignment guide () has a central axis and comprises: a first portion () having a first constant cross section along the central axis; and a second portion () having a second constant cross section along the central axis that is larger than the first constant cross section. The first portion is further away than the second portion, and the first and second portions are coaxial with the central axis. The surgical cutting guide and surgical alignment guide form a system in which the alignment guide can be removed more easily from the cutting guide because there is more freedom of movement once the stepped surfaces are disengaged.

Surgical cutting guide, surgical alignment guide and surgical instrument system

Patient specific surgical instruments, and in particular cutting guides, and methods of use and manufacture are described. The surgical instrument can be used in an orthopaedic arthroplasty procedure to be carried out on a joint of a patient and can allowing soft tissue balancing for the joint. The instrument comprises a body having an attachment area configured using data specific to a bone of the joint of the patient so as to attach to the bone in a unique position. The instrument includes at least a first cutting guide and an adjustment mechanism operable to change the position of the cutting guide relative to the bone.

Surgical instrument

Growing community of inventors

Leeds, United Kingdom

Kevin D Booth