Zimmer Inc. | Date: 2017-01-23
An assembly of a patient specific instrument and tracking system comprises a patient specific instrument having a body with a patient specific contact surface negatively shaped relative to a corresponding surface of a bone for complementary contact therewith. An inertial sensor unit with a preset orientation is connected to the body in a planned connection configuration, such that a geometrical relation between the contact surface and the inertial sensor unit is known. A tracking system has a tracking processor connected to the inertial sensor unit, a user interface, and bone orientation data related to the patient specific contact surface, the tracking processor producing orientation tracking data for the bone using the geometrical relation and the bone orientation data when the preset orientation of the inertial sensor unit is initialized, to output the orientation tracking data on the user interface.
Zimmer Inc. | Date: 2016-12-22
A bone cut positioning system and associated method are disclosed. The bone cut positioning system can include a positioning assembly, including a femoral attachment member, including a tongue with at least one fixation aperture configured to be fixed to a distal end of a femur. The positioning assembly can further include a light emitter mounting member configured to receive a light emitter, a channel configured to receive a depth selector slide, and a varus-valgus adjustment member configured to adjust a position of the positioning assembly relative to the femur to achieve a desired varus-valgus angle. A flexion-extension adjustment member can be configured to adjust a flexion-extension position of the positioning assembly relative to a flexion-extension of a knee joint and a guide member can be configured to extend from the depth selector slide
Zimmer Inc. | Date: 2017-04-12
A patient-specific cutting assembly comprises a model file including geometrical data of a bone of the patient, of an intramedullary canal of the bone, and a planned orientation of a cutting block. A fixing rod is adapted to be longitudinally inserted in and extending partially from the intramedullary canal. A patient-specific cutting block is connectable to the fixing rod. The patient-specific cutting block includes a structure having a patient specific geometry corresponding to the model file of the patient, the structure configured to be connected to a portion of the fixing rod projecting from the bone in a unique coupling orientation. A cutting guide is connected to the structure, the cutting guide being in the planned orientation when the structure is connected to the portion of the fixing rod projecting from the bone.
Zimmer Inc. | Date: 2017-03-08
A cup impactor assembly comprises a shaft. A cup coupler is at a cup end of the shaft and is releasably connecting a cup in fixed relation. A handle is at an impacting end of the shaft. A visual guide is mounted to at least one of the shaft and the handle, the visual guide producing visual guidance for pointing at at least two landmarks of the pelvis or fixed relative to the pelvis, based on a pre-planned patient-specific relation between the at least two landmarks and a desired acetabular cup orientation relative to the landmarks. A method for orienting an acetabular cup prior to impacting in an acetabulum of a pelvis is also provided.
Zimmer Inc. | Date: 2016-11-02
Systems and apparatuses including apparatuses that can be used in a knee replacement procedure are disclosed. According to one example, an assembly for a knee replacement surgery is disclosed. The assembly can comprise an adjustment member, a carrier assembly, a posterior slope housing assembly, and a boom. The carrier assembly can be configured to selectively couple with the adjustment member such that the carrier assembly is moveable relative to the adjustment member to a desired position. The posterior slope housing assembly can be connected to the adjustment member and can be configured to pivot the adjustment member relative to a portion of the posterior slope housing and a tibia. The boom can be coupled to the posterior slope housing assembly and can be configured to couple with a mounting component to mount the posterior slope housing assembly, the carrier assembly and the adjustment member relative to the tibia.
Zimmer Inc. | Date: 2017-05-17
Tibial prosthesis having one or more fins (520, 521) for use in a total or unicompartmental knee athroplasty procedure are disclosed. The one or more fins can be adapted to fix a tibial prosthesis to the tibia and can engage with corresponding channels formed in the resected tibia. Additionally, intercondylar components (102) and methods for use in a total or unicompartmental knee athroplasty procedure are disclosed. The intercondylar component can be integral with or attached to a baseplate (100) configured for attachment to a partially resected proximal surface of the tibia that retains at least a portion of the intercondylar eminence and the anterior cruciate ligament (ACL) and/or the posterior cruciate ligament (PCL). Inner surfaces (127, 129) of the intercondylar component can be configured to engage with at least a portion of the intercondylar eminence remaining with the partially resected tibia. In an example, the intercondylar component or the one or more fins can be formed of a porous material, such as to facilitate bone growth.
Zimmer Inc. | Date: 2017-02-03
A knee arthroplasty system for use in a patients knee joint comprises a spacer block instrument including a base portion, a tibial component extending from the base portion and configured for placement against a tibia, and a femoral component configured for placement against a femur. The femoral component is rotatably coupled to the tibial component. The system further includes one or more spacer block shims structured for removable attachment to the tibial component.
Zimmer Inc. | Date: 2017-02-08
Surgical methods and tibial implants for accommodating the anterior cruciate ligament during unicompartmental or bi-unicompartmental knee arthroplasty procedures.
Zimmer Inc. | Date: 2017-02-06
An apparatus can include a base plate. A glenosphere can be configured to be mountable to the base plate. The glenosphere can be adapted to operate with a complementary humeral component. The base plate can include a removable taper member on a side of the base plate facing the glenosphere. The taper member can be configured to mount the glenosphere to the base plate.
Zimmer Inc. | Date: 2017-05-24
One aspect of the present disclosure provides a method of manufacturing an orthopedic prosthesis. This particular method includes providing a porous metal layer (22) positioned against a metal substrate at an interface between the porous metal layer and the metal substrate. Additional steps include providing an electrode (132) and providing an intermediate element or coating positioned between and in contact with the electrode and the porous metal layer where the intermediate element includes tantalum in contact with tantalum of the porous metal layer. In a further step, an electrical current is directed to the interface between the porous metal layer and the metal substrate to bond the porous metal layer to the metal substrate.