Trocar for human or animal coelioscopy

Trocart pour la coelioscopie humaine ou veterinaire

Abstract

<P>La présente invention concerne un trocart pour la coelioscopie humaine ou vétérinaire, du type comportant un élément tubulaire creux propre à permettre le passage d'un outil et muni d'une vanne pour la commande de l'insufflation d'un gaz provenant d'un conduit souple raccordé sur la partie proximale de l'élément tubulaire creux, la vanne étant constituée par un manchon (12) cylindrique coaxial avec l'élément tubulaire, mobile en translation par rapport à une partie intermédiaire (2) de l'élément tubulaire où la paroi est traversée par au moins un passage (7, 8) et présente de part et d'autre dudit orifice un joint annulaire (9, 10).</P>
The trocar consists of a hollow tube (3) to allow the passage of an instrument, and a valve to control the input of a gas through a supple duct connected to the proximal end of the tube. The valve comprises a cylindrical sleeve (12) lying coaxially with the tube and is able to move relative to an intermediate element (2) with one or more radial passages (7,8) and seals (9,10). The sleeve also has a connector (13) for the gas feed duct. When gas is being injected into the trocar, the connector is aligned with one of the radial passages, and is separated from them by shifting the sleeve relative to the intermediate element. The proximal end of the trocar is blocked by a plastic stopper (16) while gas is being injected into it. The tube is made from stainless steel or Teflon (RTM).

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Cited By (4)

    Publication numberPublication dateAssigneeTitle
    EP-1561428-A3November 02, 2005Tyco Healthcare Group LpPneumoperitoneum-Nadel
    US-7618399-B2November 17, 2009Tyco Healthcare Group LpPneumoperitoneum needle
    US-7887514-B2February 15, 2011Tyco Healthcare Group LpPneumoperitoneum needle
    US-8382716-B2February 26, 2013Covidien LpPneumoperitoneum needle