Department of Mechanical Engineering, University of Hawaii at Manoa, Honolulu, HI, USA.
Surg Innov. 2020 Aug;27(4):402-405. doi: 10.1177/1553350620945564. Epub 2020 Aug 3.
Needle-based intervention has been a popular procedure for diagnosis and treatment of many types of cancer. However, poor needle placement and tumor visualization have been among the challenges resulting in poor clinical outcomes. There has been a lot of progress in medical imaging technology, but the structure of surgical needles has remained unchanged. This work presents a wire-driven 3D steerable, 3D-printed active needle for improved guidance inside the tissue toward the target. The needle is manipulated by 3 embedded tendons via a programmed motorized control unit. Feasibility tests in a tissue phantom showed an average 3D needle angular deflection of about 11°. This amount of angular deflection is expected to assist prostate brachytherapy via a curvilinear approach.
基于针的介入治疗已成为诊断和治疗多种癌症的常用方法。然而，由于针的位置不佳和肿瘤可视化效果差，导致临床效果不佳。医学成像技术已经取得了很大的进步，但手术针的结构仍然没有改变。本工作提出了一种基于线驱动的 3D 可控、3D 打印的主动针，以改善在组织内对目标的导向。该针通过一个程控的电动控制单元由 3 个嵌入的肌腱操纵。在组织模型中的可行性测试显示，平均 3D 针角偏转约 11°。预计这种角度的偏转量将通过曲线方法辅助前列腺近距离放射治疗。
