| 摘要 |
An anoscope for ligating internal hemorrhoids has an outer tubular body with lateral hemorrhoid-receiving apertures coinciding with the normal location of internal hemorrhoids in man, and a closed-ended, generally bullet-shaped head to close the distal end of the anoscope and to protect the operator from escaping gas and bowel content. A rotatable inner obturator has lateral apertures that register with the lateral apertures of the outer tubular body when the anoscope is open and intermediate slats that occlude the lateral apertures when the anoscope is closed.
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