Numerical Modelling of Conical-Shaped Bone Marrow Biopsy Needle Into Multilayer Iliac Crest Model

R. Nadda, R. Repaka, A. Sahani
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引用次数: 3

Abstract

Bone marrow biopsy (BMB) is a standard technique used in various therapies, research, diagnosis, and prognosis. The extensive forces during biopsy result in unnecessary stress concentrations that are primarily hazardous to weak end bones. To enhance protection and to better identify the risks of bone biopsy, it is essential to understand and predict the interaction of needles with multiple layers of skin and bone. The present investigation aimed to find out the numerical evaluation of forces involved in the insertion and extraction of the needle into multilayer iliac crest model. The insertion and extraction forces have been studied at different diameters of biopsy needles up to a depth of 15.35 mm and insertion speeds in the range of 1 mm/sec - 10 mm/sec. The results showed that the insertion and extraction forces vary according to the needle diameter and relative velocity among the needle and tissue layers. A linear force vs. depth relationship has been obtained in the preliminary phase, and as the depth of insertion increases, the forces increase non-linearly. At the end phase of penetration, the forces augmented more rapidly at a low insertion rate compared to the high insertion rate.
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锥形骨髓活检针在多层髂骨模型中的数值模拟
骨髓活检(BMB)是一项标准技术,用于各种治疗、研究、诊断和预后。活组织检查过程中广泛的作用力导致不必要的应力集中,这主要对弱端骨有害。为了加强保护和更好地识别骨活检的风险,了解和预测针与多层皮肤和骨骼的相互作用是至关重要的。本研究旨在对多层髂骨模型中针的插拔力进行数值计算。研究了不同直径的活检针的插入和拔出力,深度为15.35 mm,插入速度为1 mm/秒- 10 mm/秒。结果表明,针的直径和针与组织层之间的相对速度不同,针的插拔力也不同。在初始阶段,力与深度呈线性关系,随着插入深度的增加,力呈非线性增加。在穿透的最后阶段,与高插入率相比,低插入率下的力增强更快。
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