概括
一个新的液态透镜系统使灵活的光纤系统能够实现精确的,聚焦的激光切除. 这项创新克服了直接接触方法的局限性,提高了切除精度,并防止了医疗应用中的组织损伤.
科学领域:
- 生物医学工程 生物医学工程
- 光学物理学的光学物理学
- 材料科学 材料科学 材料科学
背景情况:
- 灵活的光纤使激光在曲的外科空间中实现传输.
- 在激光切除过程中,直接接触纤维尖端会导致纤维损伤和不均的组织效应.
- 激光失焦限制了在不同深度准组织时的精度.
研究的目的:
- 在灵活的光纤系统中引入液态镜头,用于精确的激光聚焦.
- 为了应对激光失焦的挑战,在灵活的光纤基础上进行切除.
- 为了提高医学图像引导激光切除程序的性能.
主要方法:
- 一个液态镜头被集成到一个灵活的光纤系统中.
- 该系统将3W激光聚焦在中密度纤维板 (40-180毫米焦距) 上.
- 光学连贯断层扫描 (OCT) 用于定量评估废弃特征.
主要成果:
- 液态透镜成功地将激光聚焦到不同的深度,而无需直接与组织接触.
- 剥离坑尺寸 (直径和深度) 与激光功率和时间相关.
- 液态镜头展示了持续聚焦能力,在尺寸,响应,重量和操作方面具有优势.
结论:
- 基于液体透镜的聚焦激光切除比传统方法有前途.
- 这项技术有可能提高激光切除疗法的精度和安全性.
- 该系统的紧和高效的设计有助于整合到医疗设备中.
相关概念视频
Imaging Biological Samples with Optical Microscopy
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
Phase Contrast and Differential Interference Contrast Microscopy
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...


