Patent ID: 8449462
Filing Date: 2013-05-28
Classification: A61B

Abstract:
1. A speculum insertable into a body cavity of a person and expandable to enlarge the opening of said cavity for examination purposes thereof, comprising: a support member provided with an opening therethrough along a centerline thereof, provided with at least two elongated arm sections circumferentially spaced relative to said centerline, wherein each of said arm sections lies in a plane including said centerline; at least two blade members, each lying in said plane of one of said arm sections and having an intermediate section pivotally connected to said support member for pivotal movement of said blade member in said plane, a first end section angularly displaceable into and out of engagement with an end section of said other blade member and a second end section angularly displaceable toward and away from one of said arm sections; means for releasably biasing said first end sections of said blade members into engagement, permitting said end sections thereof to be inserted into and removed from said cavity; and means mounted on each of said arm members and displaceable along a length thereof, engageable by a second end section of one of said blades, for camming said one blade to pivot about the axis thereof, including means for releasably restraining the displacement of said camming means along said length of said arm member.