Biomechanical characteristic measuring device for anterior cruciate ligament

Abstract

The invention discloses a biomechanical characteristic measuring device for the anterior cruciate ligament. The measuring device comprises a test bench bottom plate, a Y-axis slide table mechanism, anX-axis slide table mechanism, a ligament fixed-end clamping mechanism, a control mechanism and a drive mechanism. The X-axis slide table mechanism, the Y-axis slide table mechanism, and the ligamentfixed-end clamping mechanism are fixed on the test bench bottom plate; and chucks are arranged at opposite end portions of the X-axis slide table mechanism and the ligament fixed-end clamping mechanism. The drive mechanism includes an X-axis driving mechanism and a Y-axis a driving mechanism. With the measuring device, the motions with the three degrees of freedom can be realized and include Y-axis translation, X-axis translation, and X-axis rotation. In addition, the measuring device also includes a plurality of tension sensors electrically connected to the control mechanism; and on the basisof feedback values of the tension sensors, the biomechanical characteristic parameters of the anterior cruciate ligament under forces in three motion directions are obtained. With the system, the biomechanical characteristic measurement experiment of the ACL ligament in three directions is realized; and one scientific and accurate mathematical model is established by the experiment. The biomechanical characteristic measuring device can be applied to the medical field.

Description

technical field [0001] The invention relates to a device for measuring biomechanical properties of anterior cruciate ligament, which is used for measuring the biomechanical properties of the ligament in a tension or shear force and a torsion state, and belongs to the technical field of biomechanical property testing devices. Background technique [0002] The anterior cruciate ligament (Anterior Cruciate Ligament) is an important structure to maintain the stability of the knee joint, and has important physiological functions and significance. The anterior cruciate ligament originates from the tibial intercondylar eminence anteriorly and laterally, and ends at the posterior part of the medial surface of the femoral lateral condyle. The fibers of the anterior inner bundle have a long course, starting from the static and stable structure before the origin of the tibia, and it is a dynamic structure with unique anatomy. At the same time, the ACL has tension or shear force to prev...

AI Technical Summary

Problems solved by technology

At present, there are not many biomechanical guidance for clinical postoperative reconstruction of ACL, which also leads to the fact that the current ACL reconstruction surgery still relies on experience in the control of key parameters.

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