Lau Jonathan C, Denning Lynn, Lownie Stephen P, Peters Terry M, Chen Elvis C S
London Health Sciences Centre, London, Ontario, Canada.
Robarts Research Institute, London, Ontario, Canada.
Stud Health Technol Inform. 2016;220:185-92.
We present a functional and patient-specific lumbar phantom for the training of spinal durotomy and dura closure under microscopic view, consisting of a lumbar model, pressurized dural surrogate, together immersed in a tissue-mimicking layer simulating fat, muscle and skin. The lumbar model was derived from a patient computed tomography scan, preserving the natural shape and curvature of the lumbar column. The inclusion of the simulated soft-tissue layer was critical for preserving the surgical ergonomics and presented a realistic view under the surgical microscope. As the success of dura repair is indicated by the watertight closure of the thecal sac, the dura surrogate was connected to a pressurized and closed-loop water system to provide functional cerebrospinal fluid leakage during durotomy. This functional phantom is inexpensive to construct, provides a realistic tactile and visual environment for spinal durotomy repair, and can be easily extended to simulate other patient-specific spinal interventions.
我们展示了一种用于在显微镜下训练脊柱硬脊膜切开术和硬脊膜闭合术的功能性且针对患者的腰椎模型，它由一个腰椎模型、加压硬脊膜替代物组成，共同浸没在模拟脂肪、肌肉和皮肤的组织模拟层中。腰椎模型源自患者的计算机断层扫描，保留了腰椎柱的自然形状和曲率。包含模拟软组织层对于保持手术人体工程学至关重要，并在手术显微镜下呈现出逼真的视野。由于硬脊膜修复的成功以硬脊膜囊的水密闭合为指标，硬脊膜替代物连接到一个加压闭环水系统，以便在硬脊膜切开术期间提供功能性脑脊液渗漏。这种功能性模型构建成本低廉，为脊柱硬脊膜切开术修复提供了逼真的触觉和视觉环境，并且可以轻松扩展以模拟其他针对患者的脊柱干预措施。
