德国DraegerMedicalAG开发出新型手术室照明系统

一种新型照明灯具有两套光学系统，设计用于改善手术室的工作环境并增加效率。

这种照明灯叫做Stella，一个照明灯内具有两套光学系统。两套系统连接在一个光学轴上，具有各自的透镜、滤光器、以及反射镜。获得的系统联合使用卤素和气体放电技术。当气体放电灯产生大面积、无阴影照明的时候，卤素灯提供附加的高对比深度的照明。结果，这套系统能够均匀照射伤口环绕区域和伤口内部，产生有立体感的视野，尽可能的防止阴影产生。

两套光学系统的均匀一直的色温，4200开氏温标，产生了最佳的颜色识别环境，使得每层组织彼此之间更加容易识别。新型控制设计考虑了单个外科医生的需求，允许外科医生通过常数、均一的光柱来设置最佳照明效果，使用安置在灯泡体部的可消毒的手柄来调节照明深度。Stella同时还能够适应分离消毒和非消毒区域的要求，可以将方案效率最佳化，满足手术之前和之中的卫生要求。

Stella是由德国Draeger Medical AG研制开发的，该公司在2005年5月维也纳召开的欧洲麻醉学学会年会上介绍了这套产品。
 
Novel Lighting System for Operating Room
 
A new lamp that combines two optical systems is designed to improve working conditions and increase efficiency in the operating room (OR).

Called Stella, the lamp has two optical systems in a single body. These are joined on an optical axis, each with its own lens, filters, and reflectors. The patented system combines halogen and gas-discharge technology. While the gas discharge lamp generates large-area, shadow-free illumination, the halogen lamp provides an additional high-contrast depth illumination. As a result, the system is able to evenly illuminate both the area surrounding a wound and deep into the situs, supporting stereoscopic vision and preventing bothersome shadows from occurring as much as possible.

The identical color temperature of both light systems, 4200 Kelvin, creates conditions for optimal color recognition and makes tissue layers more easily distinguishable from each other. The new control design takes into account the demands of the individual surgeon by allowing the surgeon to set the optimal luminance by the constant, homogenous light cylinder and to adjust the depth of illumination using a sterilizable handgrip located on the body of the lamp. The Stella concept also accommodates the necessity to better separate sterile and nonsterile areas in order to optimize the efficiency of procedures and hygienic requirements before and during an operation.

Stella was developed by Draeger Medical AG (Lubeck, Germany), which introduced the unit at the annual meeting of the European Society of Anesthesiology (ESA) in Vienna (Austria) in May 2005.