| 摘要 |
A compact, self-powered, selectively-mountable lighting unit provides light directable by a user to an operation site in a confined space to enable the user to operate a tool therein. The lighting unit is detachably mountable in a variety of ways either to a user-selected location on any suitable surgical instrument,or at the user's option to an adjacent location within the confined space, to facilitate well-lit and accurate viewing thereat. The lighting unit may be adapted to provide lighting of selected frequency, in an adjustable focus ranging from substantially diffuse light to a tightly focused beam. A known dead-soft element may be included to enable the user to adjust orientation of the delivered light.
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