Suction device comprising: an outer cannula (16) secured in a handle (12), the outer cannula defining a distal tip (29) that provides a distal cutting edge; a stylet (14) designed to be inserted in the outer cannula, the stylet defining a sharp distal tip (30); a hollow cannula (82) designed to be inserted in the outer cannula; and an opening (93) defined in one side of the hollow cannula, characterized in that said hollow cannula has a closed distal end (91).
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