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최소 침습 수술과 척추의 거동 안정화를 위한 척추 인공삽입물 설계
허민혁(Minhyuk Heo),윤지환(Jihwan Yun),박성훈(Seonghun Park) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
The purpose of the present study is to design a novel lumbar spine implant that allows a minimally invasive surgery that can avoid soft tissue removal as much as possible in the device installation procedure and that makes the lumbar behavior similar to normal lumbar behavior even after the procedure, so that the drawbacks of conventional lumbar spine implants may be overcome. The lumbar spine implant developed in this study was designed to include spike and ratchet elements in the fixed part of the device in order to minimize removal of soft tissue. Also, the part that connects the interspinous process was designed as a spring element to enable normal lumbar movement after the lumbar support installation process. In order to analyze the structural stability of the device, a load of 250 N was applied to the lumbar spine implant. As a result of the analysis, it was evaluated that the lumbar spine implant was structurally stable. When the lumbar spine implant was inserted, the disc pressure decreased by 80 - 92% compared to the defect model and the flexion movement was also recovered to the normal behavior range reported in previous studies. These results suggest that the currently designed the lumbar spine implant could provide the minimization degenerative diseases at the adjacent lumbar segment.