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  • Specula designed to expand the anal canal, rectum, and/or sigmoid colon. These specula typically consist of either a hollow, funnel-like device or a mechanical instrument that frequently includes two pivoted arms. The portions closer to the pivot point are usually the handle, while the distal portions are inserted through the anal canal into the rectum. Specula may be used directly to perform examinations and manual procedures or as part of an anoscope, proctoscope, or sigmoidoscope for examination or surgery (e.g., hemorrhoid treatment). Both disposable (e.g., plastic) and reusable rectal specula are available in different sizes and shapes; some include a lighting system.
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