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1. 发明申请

WO2022148964A2 UNICOMPARTMENTAL TIBIAL COMPONENTS 审中-公开
公开(公告)号：WO2022148964A2
公开(公告)日：2022-07-14
申请号：PCT/GB2022/050025
申请日：2022-01-07
申请人： ZIMMER GMBH , O'CONNOR, John , DODD, Christopher , MURRAY, David Wycliffe
发明人： O'CONNOR, John , DODD, Christopher , MURRAY, David Wycliffe
IPC分类号： A61F2/30 , A61F2/38 , A61B17/17 , A61B17/1764 , A61F2/30767 , A61F2/389 , A61F2002/30028 , A61F2002/30838 , A61F2002/30891 , A61F2002/30892 , A61F2002/3092 , A61F2002/3093 , A61F2002/3895 , A61F2310/00796
摘要： Unicompartmental tibial components are described herein. A first unicompartmental component (10) comprises a plate (12) having a bearing surface (18) and an opposing surface (22) that is configured to be secured to a proximal end of a patient's tibia, wherein the plate further comprises an anterior end (24), an outer side (25), a posterior end (26) and an inner side (27), wherein a mediolateral width W of the plate is defined between the outer and inner sides, and a longitudinal anteroposterior axis (28) extends between the anterior and posterior ends approximately one third of the width of the plate (i.e. 1/3W) from the lateral side, and defines a longitudinal axis length L of the plate. A first elongate peg (14) protrudes from the opposing surface in the anterior portion, the first elongate peg defining a first peg axis (32). A second elongate peg (16) protrudes from the opposing surface in the anterior portion, the second elongate peg defining a second peg axis (34). The first and second peg axes are disposed at an angle of 45-70 degrees with respect to the longitudinal anteroposterior axis and are substantially parallel to one another such that the first and second pegs protrude posteriorly as well as distally with respect to the plate. An anterior portion of the plate comprises a part of the plate defined by an anterior 60% or less of the longitudinal axis length L, whilst a posterior portion of the plate comprises a part of the plate that is defined by the remaining posterior 40% or more of the longitudinal axis length L. The posterior portion of the opposing surface is free from pegs or other fixation devices, and the first and second elongate pegs are located more than half of the mediolateral width W of the plate from an outer edge of the plate. The component is configured for cementless fixation using an interference fit. Also described is a method of installation and a tool suitable for use in installation.

2. 发明申请

WO2021250504A1 UNICOMPARTIMENTAL KNEE PROSTHESIS 审中-公开
公开(公告)号：WO2021250504A1
公开(公告)日：2021-12-16
申请号：PCT/IB2021/054765
申请日：2021-05-31
申请人： GRUPPO BIOIMPIANTI S.R.L.
发明人： PIAVANI, Alberto Giulio , CUSMA' DOVICO GUATTERI, Gianluca
IPC分类号： A61F2/38 , A61F2/3859 , A61F2/389 , A61F2002/30316 , A61F2002/30329 , A61F2002/30428 , A61F2002/30884 , A61F2002/30889 , A61F2002/3895 , A61F2310/00005 , A61F2310/00023 , A61F2310/00029
摘要： Prosthesis for knee arthroplasty comprising a femoral component with a minimum thickness and with two different systems for fastening to the femoral condyle and a tibial component with an upper surface which can have a double profile with a differentiated congruence profile. The tibial component can be made with a single body or in two parts of different materials.

3. 发明申请

WO2021149000A2 ANATOMIC KNEE PROSTHESIS AND DESIGNING METHOD 审中-公开
公开(公告)号：WO2021149000A2
公开(公告)日：2021-07-29
申请号：PCT/IB2021/050496
申请日：2021-01-22
申请人： SYMBIOS ORTHOPÉDIE S.A.
发明人： LECLERCQ, Vincent , PLÉ, Florent
IPC分类号： A61B34/10 , A61F2/30 , A61F2/38 , A61F2/46 , A61B2034/102 , A61B2034/104 , A61B2034/105 , A61B2034/108 , A61F2/3094 , A61F2/30942 , A61F2/3859 , A61F2/3877 , A61F2/389 , A61F2002/30943 , A61F2002/30948 , A61F2002/3895 , A61F2002/4633
摘要： A knee prosthesis and a method of selecting for a particular patient a knee prosthesis from an inventory of available knee prostheses or from 3D knee prosthesis models is provided. The method includes the steps of (a) parameterizing a knee prosthesis according to well-defined and independent knee joint compartments, (b) generating a large number knee shapes in the form of 3D knee prosthesis models which reproduce the 3D shape asymmetries of each individual knee, thereby enabling the replication of the knee motion of essentially any patient by generating shapes which vary the shape parameters (surface and dimension) of at least one of those compartments and storing these 3D knee prosthesis models in a database, and (c) studying the patient's pathology and developing pre -pathological knee prosthesis criteria matching the patient's needs. Using a planning algorithm, a suitable knee prosthesis may be selected among an inventory of existing knee prostheses or the large number of knee shapes, the prosthesis or shape selected best meeting the patient's needs as determined by the study.

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