Amsterdam, Netherlands
Amsterdam, Netherlands
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Patent
Tornier | Date: 2017-01-18

A stemless humeral shoulder assembly having a base member and an anchor advanceable into the base member. The base member can include a distal end that can be embedded in bone and a proximal end that can be disposed at a bone surface. The base member can also have a plurality of spaced apart arms projecting from the proximal end to the distal end. The anchor can project circumferentially into the arms and into a space between the arms. When the anchor is advanced into the base member, the anchor can be exposed between the arms. A recess can project distally from a proximal end of the anchor to within the base member. The recess can receive a mounting member of an anatomical or reverse joint interface.


Patent
Tornier | Date: 2016-10-27

A modular reverse shoulder prosthesis according to embodiments of the present invention includes a stem having a proximal taper and a primary stem axis, the proximal taper extending from the stem about a metaphyseal axis, the metaphyseal axis at an angle with respect to the primary stem axis, a metaphysis having a proximal end, a distal end, a first aperture in the distal end configured to be placed over the proximal taper, and a second aperture in the proximal end having an insert axis that is eccentrically offset from the metaphyseal axis, the metaphysis configured for attachment to the stem at any rotational position of the metaphysis about the metaphyseal axis, and a reverse insert, the reverse insert having a proximal end and a distal end, wherein the proximal end comprises a concave cup formed about a cup axis and configured to receive a glenosphere, and wherein the distal end comprises a locking protrusion, wherein the locking protrusion has an outer surface with a cross-sectional shape that is rotationally symmetrical about the insert axis with respect to a corresponding inner surface of the second aperture, wherein the rotational symmetry has an order of six, seven, eight, nine, or ten.


Patent
Tornier | Date: 2016-10-28

Method and set of surgical instruments for fitting a shoulder prosthesis, and the shoulder prosthesis. The proposed method seeks to interpose a bone graft between the previously prepared glenoid surface (G) of a scapula (S) of a patients shoulder and the face of a glenoid prosthetic component opposite the articular surface. The set of instruments permit the bone graft to be taken from the upper epiphysis of the humerus (H), either in situ or ex vivo.


A glenoid implant for a shoulder prosthesis for implantation in the glenoid of a scapula according to embodiments of the present invention includes a central fixation element; an articular body configured for articulation with a humerus, the articular body comprising a plate, the plate comprising a side configured to be oriented toward the glenoid, the side comprising a central protrusion, wherein the central fixation element comprises a means for mechanically engaging with the central protrusion; a first means for locking rotation of the central fixation element with respect to the glenoid; and a second means for locking rotation of the articular body with respect to the glenoid.


Patent
Tornier | Date: 2017-02-17

Modular humeral implants and methods of use. A humeral implant can include a stem portion, a metaphyseal portion, a locking element, and an intermediate portion. The intermediate portion can include at least one spacer. Each spacer can include a proximal engagement feature, a distal engagement feature, a lumen extending longitudinally through the spacer, and a pin slidable within the lumen of the spacer. Distal movement of a locking element in the metaphyseal portion can translate the pin of each spacer to secure the metaphyseal portion, the intermediate portion, and the stem portion in a locked configuration.


The instrumentation makes it possible to implant in a long bone, such as the humerus, the femur or the tibia, an implant (1), such as an osteosynthesis nail or a prosthetic rod, defining a longitudinal axis (X-X) and including, in alignment along the longitudinal axis, two opposite terminal parts (2, 3) and a running part (4) that separates the two terminal parts from one another. The instrumentation comprises a targeting ancillary tool (10) that is adapted to target one and/or the other of the terminal parts of the implant, if applicable percutaneously, along at least one targeting axis that is transverse, or even perpendicular, to the longitudinal axis, and fastening means (20) suitable for fastening the targeting ancillary tool and the implant to one another so as to position the targeting ancillary tool and the implant relative to one another in a predetermined configuration. According to the invention, the fastening means (20) are designed to be fastened laterally to the running part (4) of the implant.


Patent
Tornier | Date: 2017-01-09

An implant couples a first bone of a hand to a second bone of the hand. The implant includes a body that defines a median plane. The body also defines a first joint surface having a first central region that articulates with the first bone. The body further defines a second joint surface having a second central region that articulates with the second bone, and the second central region is disposed on an opposite side of the median plane of the body relative to the first central region. The first and second central regions correspond to profiles of first and second axial segments, respectively, the first and second axial segments are each one of a cylinder, a cone and a torus and are centered on first and second axes, respectively, and the first and second axes, as projected on the median plane, are substantially perpendicular to each other.


Systems and methods for modifying a shoulder joint configuration exhibiting wear that take into account resultant of forces responsible for the wear of the glenoid surface from geometric characteristics of wear.


Joint prosthesis methods and apparatuses are provided. A bone graft blank is placed in the chamber of the bone press (500) facing a contoured surface. The contoured surface can be part of the bone press or can comprise a surface of a patient specific negative (800) that can be inserted into the bone press. A bone contact surface of the bone graft blank is disposed in the chamber to face the contoured surface of the patient specific insert negative. The bone contact surface of the bone graft blank is compressed against the contoured surface. The bone contact surface can be reshaped to form a patient specific bone graft.


The instrumentation (100) aims at improving the implantation of a glenoidal prosthetic component which is both provided with a convex articular surface defining a joint axis and intended to articulate with a humeral prosthetic component, and which is adapted so as to be fixedly assembled with a plate (20) to be anchored to the glenoid, the assembly between the glenoidal prosthesis component and the plate being centered on an implantation axis which is both parallel and shifted relatively to the joint axis, the relative position of the glenoidal prosthesis component and of the plate being adjustable around the implantation axis before fixing the assembly. The instrumentation comprises a tool (110) for positioning the glenoidal prosthetic component and the plate relatively to each other angularly around the implantation axis, this comprising a body (111), which, in use, extends transversely to the implantation axis and which is provided with localization elements (113) for localizing an implantation angle centered on the implantation axis, so that the tool is able to intra-operatively protract the implantation angle with respect to the glenoid.

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