INNOVATIVE CONCEPT FOR A 3-MICRON LASER SCALPEL

3 微米激光手术刀的创新理念

• 批准号: 6298706
• 负责人: COORG R PRASAD
• 金额: $ 9.98万
• 依托单位: SCIENCE AND ENGINEERING SERVICES, INC.
• 依托单位国家: 美国
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-09-10 至 2002-09-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6298706
• 关键词: arsenic; biomedical equipment development; computer system design /evaluation; fiber optics; gallium; indium; lasers; microprocessor /microchip; surgery material /equipment

DESCRIPTION (Verbatim from the Applicant's Abstract): Due to the strong water absorption bands in the about 3micro spectral region, 3-micro laser radiation is extremely appropriate for surgical intervention, especially where only shallow cutting beam penetration (incision depth of the order of 20-30 micro) is needed. The aim of the proposal is to develop a novel 3-micro laser scalpel technology for stereotactic surgery using a technical approach that would go around the well-known problem of the 3-micro radiation delivery to internal organs. Out innovative approach is based on replacing the presently technically complicated fiber delivering of the operative3-micro radiation to the undergoing surgery organ by a well developed fiber delivering of the laser diode source radiation in the 0.9-1-micro region of spectrum with its subsequent down-conversion into a 3-micro laser radiation directly in a small surgical instrument tip. We will develop a miniature 30 hz repetition rate, 3mJ/pulse source of the 3-micro laser radiation, which is based on an activated dielectric single crystal pumped through a commercially available low-loss silica glass optical fiber by a commercial InGaAs diode bar stack. Based on mature laser diode pump source/fiber optics technologies, the proposed system in truly easily commercializable and will be then incorporated into a phase II fiber-tip laser scalpel for stereotactic surgery. PROPOSED COMMERCIAL APPLICATION: NOT AVAILABLE

描述(逐字摘自申请者摘要)：由于水太大 吸收带在约3微米的光谱范围内，3微米激光辐射是 非常适合手术干预，特别是在仅有浅表的情况下 需要切割光束穿透(切割深度约为20-30微米)。 该提案的目的是开发一种新的3微米激光手术刀技术，用于 立体定向手术使用的技术方法将绕过 众所周知的3-微射线对内脏器官的辐射问题。输出 创新的方法是基于取代目前技术复杂的 手术中的3-微射线对手术器官的纤维输送 通过一种成熟的光纤传输激光二极管光源的辐射 0.9-1-光谱的微区，随后向下转换为3-微区 激光直接照射在手术器械的小尖端。我们将开发一种 微型30赫兹重复频率，3mJ/3微米激光辐射脉冲源， 它是基于通过泵浦的激活的介电单晶 商用低损耗石英玻璃光纤 InGaAs二极管条堆栈。基于成熟的激光二极管泵浦光源/光纤 技术，建议的系统真正容易商业化，并将 然后结合到第二阶段光纤尖端激光手术刀中进行立体定向 做手术。 建议的商业应用：不可用