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首頁 > 美迪醫(yī)訊 > 外科手術(shù)中利用光纖導(dǎo)入激光束 |
外科手術(shù)中利用光纖導(dǎo)入激光束 【?2007-05-29 發(fā)布?】 美迪醫(yī)訊
研究者已經(jīng)發(fā)明了一種新的二級管激光器,這種二極管激光器非常適用于軟組織的外科手術(shù),它產(chǎn)生的激光束,可以用一種極細(xì)的光 導(dǎo)纖維導(dǎo)入。 打鼾,不僅不方便,而且很費(fèi)力,對多數(shù)患者來說,現(xiàn)有的解決方法是藥物療法,和外科切除部分上腭和懸雍垂,開展這一手術(shù)常常 利用二氧化碳激光器,但是這一裝置不能沿著波導(dǎo)管被定向,因此,利用人工臂降光束定位于病人的口腔中的正確位置上。 弗朗霍夫?qū)W會(Fraunhofer Institutes)在亞琛(Aachen)激光技術(shù)ILT 以及在弗賴堡(Freiburg)的固體物理雪聯(lián)合會的研究人 員已經(jīng)發(fā)明了一種適用于合適波長的二極管激光器,使得這一問題得以解決,ILT 項(xiàng)目經(jīng)理Dr. Konstantin Boucke說:“這種輸出 的激光可以通一種極細(xì)的光導(dǎo)纖維,外科醫(yī)生只要將柔韌的光纖放入患者的嘴中即可,取代了手術(shù)時費(fèi)盡的用鏡子來定位。”這種二 級激光器的特別之處時它的波長時2微米,Boucke還介紹道:“光在這個波長內(nèi)容易被生物組織吸收,而且光束不會穿透太遠(yuǎn),使用 這種激光可以更好的控制手術(shù)切口,而且,它能轉(zhuǎn)換到第二種操作模式,即發(fā)出800~980納米的光輻射,時止血最理想的波長,這使 得新的激光可以適合任何類型的軟組織手術(shù),包括前列腺切除術(shù),可以將光纖插入尿道。 為了制造出產(chǎn)生在此波長的激光器,研究者必須應(yīng)用非常規(guī)材料,如,鎵銻化合物,以及相應(yīng)的光學(xué)設(shè)施,照相機(jī)通常用來測量2微 米波長都不敏感的激光束。 來源:朗費(fèi)勞恩霍夫。 Surgery: Routing A Laser Beam Using A Fibre Researchers have developed a new diode laser which is ideally suited for use in soft tissue surgery. It can be routed by a fine light-conducting fibre. Snoring is not only inconvenient but also strenuous. The only solution for many sufferers is to undergo medical treatment that involves surgically removing part of the palate and the uvula. The instruments used to perform this operation often rely on a CO2 laser. But its light cannot be directed along a waveguide, and so an articulated arm has to be used to direct the beam to the correct position inside the patient’s mouth. Researchers at the Fraunhofer Institutes for Laser Technology ILT in Aachen and for Applied Solid State Physics IAF in Freiburg have now developed a diode laser of a suitable wavelength that allows this problem to be overcome. “The laser output can be routed through a very fine light-conducting fibre,” says ILT project manager Dr. Konstantin Boucke. “Instead of laboriously positioning a mirror at the correct angle, the surgeon merely has to introduce a flexible optical fibre into the patient’s mouth.” What makes this particular diode laser so special is that it has a wavelength of two micrometers. “Light at this wavelength is readily absorbed by biological tissue, and the laser beam doesn’t penetrate far. Surgical incisions can be controlled much better with this laser. It can also be switched to a second operating mode in which it emits radiation at 800 to 980 nanometers, the ideal wavelength for arresting bleeding. This makes the new laser highly suitable for any type of soft tissue surgery – including prostate resection, which involves inserting an optical fibre in the urethra,” says Boucke. In order to produce a diode laser operating at this wavelength, the researchers had to work with an unconventional material – gallium antimonide – and adapt the optical setup accordingly. The cameras normally used to calibrate the laser beam were not sufficiently sensitive for a wavelength of two micrometers. Source: Fraunhofer-Gesellschaft 本文關(guān)鍵字:
軟組織手術(shù) 二極管激光器
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