| 摘要 |
A plunger-in-tube surgical instrument that, by the plunger's (10) back and forth action, can expose or guard a penetrating, cutting head (13) to safely enter body cavities, can allow rapid air introduction into said body cavity, can open a specialized aperture (5 and 6) on the tube (1) wall for introduction and restraint of pendunculated tissues, can severe said tissue attachments by shearing between plunger and tube wall, cutting guillotine-fashion (FIG. 5) along said tube wall, and just pulling back to severe attachments against a sharpened spot (7) on said tube wall, can interchange first plunger with other specialized plungers while pedunculated structures are restrained by said tube, and can store severed structures in said tube for removal from said body cavities.
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