Alma Mater Studiorum -Universita' di Bologna;Istituto Ortopedico Rizzoli
发明人:
PARENTI CASTELLI, Vincenzo,CATANI, Fabio,SANCISI, Nicola,LEARDINI, Alberto
申请号：
ES10727873
公开号：
ES2609757T3
申请日:
2010.05.07
申请国别(地区):
ES
年份:
2017
代理人:
摘要：
An orthopedic device for the mobile connection of a first and a second bone segment (4, 5) that form a joint (2), the device comprising: a first component (10) that can be associated with the first bone segment (4)； and a second component (11) that can be associated with the second bone segment (5), means (13, 17, 22, 27) to connect the first component (10) and the second component (11) in order to join the first and second component (10, 11) with each other； and means (10a, 11a, 25, 26,) for restricting the relative movement between the first component (10) and the second component (11)； characterized in that the first and second components (10, 11) are coupled virtual or physically through the connection means (13, 17, 22, 27,) and the restriction means (10a, 11a, 25, 26,) by a spherical kinematic pair (17, 22) centered on a point (O) that is the center of a spherical movement that approximates the real relative spatial movement between the first bone segment (4) and the second bone segment (5), limiting the restriction means (10a, 11a, 25, 26,) the spherical kinematic pair to a degree of freedom, in which the spherical movement is defined by a model (100) comprising a first member coupled to a second member by a spherical kinematic pair (6) and by a first and a second rod (7, 8) representing two natural anatomical ligament structures of said joint (2) to connect the first member and the second member, defining the spherical kinematic pair (6 ) of the model (100), the first stem ( 7) and the second rod (8) an axis (R0) of instantaneous rotation, the geometric site of the positions occupied by the axis (R0) of instantaneous rotation during the movement being a first surface (S1) regulated with a curvilinear guideline for the first member (4) and a second surface (S2) ruled with curvilinear directrix for the second member (5), the first and second ruled surface (S1, S2) with curvilinear directrix being the axoids of the spherical movement.Un dispositivo ortopédico p
