Vaginal speculum with seal

A - Human Necessities – 61 – B

Patent

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Details

A61B 1/303 (2006.01) A61B 1/32 (2006.01)

Patent

CA 2368226

A vaginal speculum of the kind including a tubular probe (6) for penetrating the vagina wherein the probe is encircled by an annular sealing element (13), in the form of a thick walled, domed shell of polyethylene foam, spaced from the leading end of the probe and which seals only against a circumferential zone of the internal tissue defining the vaginal orifice. The external surface of the sealing element is shaped as a surface of revolution wherein the diameter of the sealing surface increases progressively with axial distance from the leading end of the sealing element and wherein the rate of increase diminishes progressively with said axial distance. The seal therefore provides a low-pressure seal over a limited range of depths of penetration of the probe into the vagina and over a range of angular alignments of the probe.

L'invention concerne un spéculum vaginal du genre de ceux qui comportent une sonde tubulaire (6) servant à être introduit dans le vagin. La sonde est entourée par un élément annulaire d'étanchéité (13), en forme de coquille bombée, à paroi épaisse en mousse de polyéthylène, séparé de l'extrémité d'attaque de la sonde et qui forme un joint uniquement avec une zone circonférentielle de tissu interne définissant l'orifice vaginal. La surface externe de l'élément d'étanchéité est conçue comme une surface de rotation, où le diamètre de la surface d'étanchéité augmente petit à petit avec une distance axiale de l'extrémité d'attaque dudit élément, et où le taux d'accroissement diminue progressivement avec ladite distance axiale. Ce joint est un joint à basse pression sur une série limitée de profondeurs de pénétration de la sonde dans le vagin et sur une série d'alignements angulaires de la sonde.

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