Topological optimization artificial vertebral body and design method thereof
A technology of topology optimization and vertebral body, which is applied in the direction of design optimization/simulation, spinal implants, etc., to achieve the effect of improving the quality of life, ensuring immediate stability, and good mid- and long-term stability
Active Publication Date: 2020-03-27
维度(西安)生物医疗科技有限公司
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Problems solved by technology
[0008] In order to solve the above-mentioned problems in the field of artificial vertebral body design, the present invention provides a topology-optimized artificial vertebral body and its design method. The topological thin-walled structure designed based on the topology optimization method can provide reliable mechanical support and ensure the artificial vertebral body. Immediate stability after implantation
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[0044] Taking the lumbar topology optimization artificial vertebra design as an example, the specific implementation method is as follows:
[0045]Step 1: Reconstruct the geometric model of the patient's spinal vertebral body segment. The CT data of the patient's spine region were collected, and all fixed vertebral body segments of the patient (such as figure 1 As shown, the fixed segment is the L1-L5 segment) three-dimensional model;
[0046] Step 2: Internal fixation system design. According to the preoperative planning, the internal fixation system was designed in the three-dimensional mechanical design software Solidworks (Version 2014, Dasssault Systemes S.A, France). The fixation system consisted of internal fixation rods and pedicle screws, and the diameter of the fixation rods was 5.5 mm. The pedicle screw is 6mm;
[0047] Step 3: Initial model design of the artificial vertebral body. The design of the artificial vertebral body is determined according to the height...
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Abstract
The invention discloses a topological optimization artificial vertebral body and a design method thereof. The artificial vertebral body comprises a perforated topological thin-wall structure and a porous structure arranged in the perforated topological thin-wall structure, the topological thin-wall structure is used for lightweight design of the prosthesis on the basis of topological optimizationmethods in various motion gait mechanical environments, and on the basis of meeting the strength requirements of the prosthesis in different motion states, the porous structure is added to meet the bone ingrowth requirements, so that later biological fixation of the prosthesis is realized, and good stability is guaranteed. According to the topological optimization artificial vertebral body, through organic combination of the perforated topological thin-wall structure and the porous structure, the immediate stability and the middle-long-term stability of the implanted artificial vertebral bodycan be guaranteed at the same time, and the improvement of the recovery life quality of the spine function of a patient is facilitated.
Description
technical field [0001] The invention belongs to the field of prosthesis design and manufacture, and in particular relates to a topology-optimized artificial vertebral body and a design method thereof. Background technique [0002] The spine bears the skull on the top and connects the hip bone on the bottom. It is an important part of the skeletal system of the human body. It plays physiological functions such as maintaining the body, protecting the spinal cord, and performing sports. Since spinal tumors, tuberculosis, and severe fractures often cause spinal destruction, which may lead to spinal nerve damage, vertebral body resection and reconstruction are required. [0003] Currently, there are three commonly used methods for vertebral body reconstruction: bone graft reconstruction, including autologous bone and allogeneic bone graft; titanium mesh reconstruction; and artificial vertebral body reconstruction. For autologous bone transplantation, it will cause secondary inju...
Claims
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Login to View More IPC IPC(8): G06F30/20G06F30/23A61F2/44
CPCA61F2/44
Inventor 王玲董恩纯康建峰李涤尘
Owner 维度(西安)生物医疗科技有限公司