Knee-joint tibia system of bone trabecula structure and operation apparatus

Abstract

The invention belongs to the technical field of medical instruments and discloses a knee-joint tibia system of a bone trabecula structure. The knee-joint tibia system is equipped with a tibial base ofa bone trabecula. The tibial base of the bone trabecula is fixed with a first tibia gasket and a second tibia gasket by welding. By arranging the tibial base of a bone trabecula, an excellent bone ingrowth structure is offered, which brings possibility to a cementless operation scheme. By fixing the first tibia gasket and the second tibia gasket on the tibial base of the bone trabecula through welding, a stable structure is achieved after fixation. Compared with a product connected in a clamping manner on the market, micro-motion abrasion between tibia gaskets and the tibial base of the bonetrabecula is completely reduced. Osteolysis around an articular system after an operation is avoided. As for tibia gasket products, thickness can be freely selected according to the clinic demand. Thesystem provides more and better operation results for operators.

Description

technical field [0001] The invention belongs to the technical field of medical appliances, in particular to a knee-tibial system with a trabecular bone structure and an operating device. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] With the continuous advancement of science and technology, the field of medical devices has also developed rapidly. At the same time, people have higher requirements for knee implant surgery. In joint replacement surgery, knee replacement is one of the basic replacement surgeries. Knee replacement surgery can effectively solve the patient's knee joint symptoms, relieve the patient's pain, and restore the patient's knee joint function to a certain extent. At present, there are mainly two forms of knee arthroplasty, with the posterior cruciate ligament preserved and without the posterior cruciate ligament preserved, both of which require resection of the anterior cruciat...

AI Technical Summary

Problems solved by technology

[0005] (1) The existing tibial system of the knee joint does not provide a space structure that can preserve the anterior and posterior cruciate ligaments at the same time, and it is impossible for doctors to choose the opportunity and surgical method to preserve the anterior and posterior cruciate ligaments at the same time

[0006] (2) The knee tibial system with the existing trabecular bone structure does not provide an excellent bone ingrowth structure, which cannot bring the possibility of non-bone cement surgery; the surface of the existing trabecular bone base structure is smooth It cannot be effectively combined with the cancellous bone of the patient's femur, which reduces the effect of early postoperative fixation and long-term stability

[0007] (3) In the tibial system of the knee joint with the existing trabecular bone structure, the tibial spacer and the tibial base are connected by snap-fitting, which increases the fretting wear phenomenon of the tibial spacer and the tibial base, and increases the joint system after surgery. Peripheral osteolysis

[0008] (4) The tibial spacer and the tibial base are installed during the operation of the existing trabecular knee tibial system, which reduces the service life of the artificial knee prosthesis, which is clumsy in design, complex in structure, and difficult to manufacture , high cost, not suitable for large-scale application

[0009] (5) The knee tibial system with the existing trabecular bone structure cannot effectively reduce the amount of bone removed during the operation, and cannot fully retain the patient's bone mass, so that the bone transport cannot be better restored after the operation; and it does not have Very good positioning action, reducing the effect of effective early fixation

The tibial support products on the market cannot distribute the stress well, and the stress at the proximal end of the tibia cannot be distributed evenly, which shortens the life of the implant and the period of revision

The existing knee-tibial system with trabecular bone structure cannot freely choose the thickness according to clinical needs, which gives the operator fewer and worse surgical results

Images