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The Cusco vaginal speculum is a self-retaining bivalved speculum used in gynecology for examining the vagina and cervix.
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Compared with other specula (e.g., Sims’ vaginal speculum), the Cusco model is self-retaining, so an assistant doesn’t have to hold it open.
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It consists of two blades that open and hold apart the anterior & posterior vaginal walls, allowing access and visualisation of the cervix and vaginal canal.
When selecting a Cusco speculum, consider:
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Patient anatomy: Smaller size for nulliparous or adolescent patients, larger size for multiparous or larger anatomy.
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Procedure type: If only a simple cervical exam or Pap smear, a medium size may suffice; for broader access you might select larger.
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Comfort & fit: A too-large size may cause discomfort or over-stretch. A too-small size may limit visualization.
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Instrumentation: If you’ll insert other tools (e.g., colposcope, IUD inserter, cryotherapy tip) ensure the speculum width/length will allow access.
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Material & use: If you sterilise and reuse, pick the stainless-steel version; if you prefer single use/disposable (e.g., in clinic settings), plastic version may be advantageous.



