Lead gauge with parallel mechanism for anterior cruciate ligament reconstruction

Abstract

The invention discloses a lead gauge with a parallel mechanism for anterior cruciate ligament reconstruction. The lead gauge with the parallel mechanism consists of six displacement bar assemblies with identical structures, one lead displacement assembly, one moveable platform assembly and one fixed platform assembly, wherein the six displacement bar assemblies are installed between the moveable platform assembly and the fixed platform assembly, and the lead displacement assembly is installed on the moveable platform assembly. The six displacement bar assemblies respectively adopt cylindricalsurfaces formed by inner / outer envelope, and screw rods are matched with feed screw nuts, thereby not only changing the rotary motion of a motor into the linear displacement of cylindrical slide blocks, but also enabling the structure to be compact. By matching spherical heads arranged at the upper and the lower end parts of the displacement bar assemblies with spherical hinge assemblies on the moveable platform and the fixed platform, the movement of the adjacent displacement bar assemblies can be coordinated.

Description

technical field [0001] The invention relates to an auxiliary device suitable for the clinical operation of anterior cruciate ligament reconstruction of the knee joint, more particularly, a lead instrument of a parallel mechanism for anterior cruciate ligament reconstruction. Background technique [0002] At present, ACL injuries caused by sports, traffic and aging society are increasing day by day. Although there are lead instruments suitable for tandem mechanisms of knee joints that have been used in clinical trials, they have not been commercialized or industrialized yet. In addition, the lead instrument of the tandem mechanism has defects such as weak rigidity, accumulation and amplification of manufacturing errors of each component, etc., so far there is a lack of practical navigation equipment for ACL reconstruction surgery. Contents of the invention [0003] In order to improve the weak point of low rigidity of the serial lead instrument, the present invention provi...

AI Technical Summary

Problems solved by technology

Although there is a lead instrument suitable for the tandem mechanism of the knee joint that has been used in clinical trials, it has not yet been commercialized and industrialized

In addition, the guide instrument of the series mechanism has defects such as weak rigidity, and the manufacturing errors of each component are accumulated and magnified, so far there is a lack of practical navigation equipment for ACL reconstruction surgery

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