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美國凱威實驗室公司Cadwell Laboratories, Inc. 
1979年，美國凱威實驗室公司研制了世界上第一臺基于微處理器運行的肌電圖/誘發電位儀Model 7000。經過20多年來對神經電生理設備的不懈追求與鉆研，所設計生產的產品以功能完備、便攜、操作簡易及實用、分析精確為本，現已廣泛應用于EMG/NCV/EP、EEG/PSG、IOM以及經顱磁刺激等領域，有八項專利技術，被眾多權威醫學專家評為全球最具創新和研發能力的高科技專業神經電生理產品的制造商。
如今，美國凱威實驗室公司新一代 Sierra? 系列肌電圖/神經傳導速度/誘發電位產品已經有Console?、Wedge?、Wave?三種型號，有二或四通道的放大器可供選擇，用戶可以根據自己的需求從中選擇最適當的配置。
　● Sierra II Wedge?，世界上最小的，重量僅6磅的EMG/NCV/EP測試系統，即可作為門診，也可用于會診，在美國銷售量很大。
　● Sierra II Wave?，小巧而且功能強大，不僅適合醫院，同時適合公安刑偵等部門使用。
　● Sierra II Console?,臺式系統。

Experience The Cadwell Difference – Since 1979

The benefits of owning a Cadwell system are numerous. Our development team understands and delivers what you need. Everyone at Cadwell stands behind our products and we all have the same goal - to keep you as a loyal, devoted customer long into the future.

Innovative Instruments for Neurophysiology

John Cadwell, BSEE, MD designed the first microprocessor controlled EMG instrument. In 1979 he and his brother Carl, DDS, formed Cadwell Laboratories, Inc. and began selling their device. Since then, Cadwell has been a leader in the development and manufacture of innovative and reliable instruments for neurophysiology. Many instruments have been providing decades of service to their owners.

Numerous patents are held by Cadwell, including those for magnetic stimulators, cable shielding designs, neural network analysis of EEG and database designs. Today, still located in Kennewick, Washington, John and Carl continue ownership of the company and come to work everyday to develop and market products ranging from EMG to EEG to PSG to IONM instrumentation and more. Cadwell has a firm hold of its identity and a dedicated focus on neurophysiology.

Advancing medical technology to help you, help others.
Cadwell is a leading manufacturer and marketer of diagnostic and monitoring products for the world of neurophysiology. We have been proudly serving you
since 1979.