Warsaw, IN, United States
Warsaw, IN, United States

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Patent
Zimmer Inc. | Date: 2017-01-04

A tibial prosthesis, and, particularly, a fixed bearing tibial prosthesis has a two-pronged securement mechanism. The securement mechanism may or may not be angled. Advantageously, the securement mechanism, working alone or in cooperation with other securement features, minimizes micromotion between the tibial tray and tibial bearing component.


An orthopaedic knee prosthesis includes a femoral component (20, 120, 220) which exhibits enhanced articular features, minimizes removal of healthy bone stock from the distal femur, and minimizes the impact of the prosthesis on adjacent soft tissues of the knee.


Provided herein are devices and methods for connecting a transcutaneous external prosthetic device to a bone, such as a bone of an amputee. The device is a two-piece transcutaneous implant device to provide reversible connection for ease of implantation, reliability, and relatively easy access for removal, while maximizing tissue ingrowth to reduce risk of infection and attendant adverse outcomes. The devices provided herein comprise a prosthetic interface and a bone anchor. A through-hole that traverses a longitudinal length of the prosthetic interface and at least a longitudinal portion of the bone anchor receives a fastener to reversibly connect the prosthetic interface to the bone anchor implanted in bone. A connector may connect to a failsafe element which, in turn, connects to an external prosthetic device.


Patent
Zimmer Inc. | Date: 2016-06-10

Methods of ordering and manufacturing orthopedic components eliminate the need to stockpile and inventory large volumes of implants and instruments. In one exemplary embodiment, the surgeon begins by acquiring anatomical data from a patient. The anatomical data may then be loaded into a data comparison program. The data comparison program performs a best-fit analysis by comparing the patients anatomical data to a number of predesigned, tested, and validated virtual implant models that are stored in a database. Once an implant has been identified by the data comparison program for the individual patient, the surgeon may place an order electronically with the manufacturer via the internet. In one exemplary embodiment, when placing the order, the surgeon will specify the type of implant, the surgery date, specific patient information, shipping information, and the preferred surgical technique that the surgeon anticipates using.


Patent
Zimmer Inc. | Date: 2016-07-06

Methods and apparatuses including an apparatus for guiding a femoral bone cut during knee replacement surgery are disclosed. The apparatus can comprise a cut guide having a first side, a second side, a third side, and one or more slots. The first side can be configured to interface with a resected surface of a femur. The second side can be spaced from the first side. The one or more slots can be defined by the apparatus and extend from the first side to the second side. The third side can be disposed between the first side and the second side and can have at least one projection extending therefrom. The at least one projection can be configured to guide a cutting tool into the one or more slots.


Patent
Zimmer Inc. | Date: 2016-07-07

The subject matter includes a system and method for providing graphical feedback visualizing forces within a joint through a range of motion of the joint. The method can comprise receiving position data, receiving force data, and generating a graphical representation based on the position data and the force data. The receiving position data can include data for at least one bone of a joint while the at least one bone is moved through a range of motion (ROM). The receiving force data can occur concurrently to receiving the position data and using one or more processors, the force data can be collected from at least one force sensor embedded within a trial prosthesis in the joint. The graphical representation can illustrate changes in the force data versus locations of the bone as it moved through the ROM.


A system for generating a PSI jig model for implant revision comprises a reference anchor surface identifying module configured to identify at least one reference anchor surface from at least one patient specific image of a bone and of an implanted implant, the reference anchor surface configured to receive a guide reference(s). An implant abutment surface determining module determines an implant abutment surface from the patient specific bone image. A PSI reference jig model generator module generates and outputs a reference jig model using the identified reference anchor surface and the determined implant abutment surface, the reference jig model comprising contact surface(s) corresponding to the determined implant abutment surface for complementary connection with the determined implant abutment surface, guide interfacing portion(s) configured to guide a planting of the guide reference in the reference anchor surface, and a patient-specific geometry between contact surface(s) and the guide interfacing portion, so as to position and/or orient the guide interfacing portion relative to the reference anchor surface, for subsequently planting the guide reference(s) in the reference anchor surface as identified when the contact surface(s) is complementarily connected with the determined implant abutment surface. A method for creating patient-specific instrumentation jig for implant revision is also provided.


Patent
Zimmer Inc. | Date: 2016-09-14

Clamping devices for an external fixation system comprise a first clamping system and a post component extending into the first clamping system. The first clamping system comprises a first outer jaw and a first inner jaw having an inner surface facing the outer jaw, the outer and inner jaws together forming an opening for receiving a first fixation element of the external fixation system. The clamping device further comprises a trigger system that releases the first outer and first inner jaw from an open bar-receiving condition to a provisionally locked condition.


Methods and systems for determining a patient specific soft tissue location within a joint are discussed. For example, a method can include imaging a target location for an orthopedic implant to collect image data regarding a morphology of the patient, the morphology including at least one of bone size and bone feature. The method can additionally include accessing stored soft tissue data and bone data corresponding to the target location of the orthopedic implant, locating a soft tissue of the patient based at least in part upon the soft tissue data and bone data and the image data, and displaying data including the location of the soft tissue of the patient. This data can be used to created patient specific surgical jigs according to one example of the present application.


A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.

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