Penetrating tip for trocar assembly

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/34 (2006.01)

Patent

CA 2409230

A tissue penetrating instrument (10) of the type used in the medical field, wherein the instrument includes an elongated shaft (26) having a penetrating tip (22) mounted on one end thereof. The penetrating tip (22) includes a base longitudinally outward from the base and formed into an apex (32), which may be defined by a point, or other configuration specifically structured to facilitate penetration or puncturing of bodily tissue. The apex (32) may be substantially aligned with a linear extension of the central longitudinal axis or alternatively, may be spaced laterally outward or off-set from the central longitudinal axis of the shaft. The penetrating tip (22) further includes an exterior surface extending continuously between the apex and the base and configured to facilitate puncturing and enlargement of the tissue, in a manner which facilitates separation of the tissue and minimizes cutting, severing or otherwise damaging the contiguous bodily tissue surrounding the access opening.

L'invention concerne un instrument servant ~ p~n~trer un tissu, du type utilis~ en m~decine, et qu'il est possible de r~aliser ou de ne pas r~aliser sous la forme d'un obturateur associ~ ~ un assemblage de trocart. Dans cette invention, l'instrument comprend une tige allong~e comportant un embout de p~n~tration mont~ sur une de ses extr~mit~s. L'embout de p~n~tration comprend une base fix~e ~ une extr~mit~ de la tige et une extr~mit~ distale ~loign~e longitudinalement et ~ l'ext~rieur de la base, form~e en pointe qui peut Útre d~finie par un point ou par une autre configuration sp~cifiquement structur~e afin de faciliter une p~n~tration ou une ponction dans un tissu corporel. La pointe peut Útre sensiblement align~e avec une extension lin~aire de l'axe longitudinal central de la tige ou, dans une autre r~alisation, elle peut Útre ~loign~e lat~ralement vers l'ext~rieur ou d~cal~e de l'axe longitudinal central de la tige. L'embout de p~n~tration comprend aussi une surface ext~rieure s'~tendant de mani­re continue entre la pointe et la base et con×ue afin de faciliter une ponction de tissu et l'agrandissement d'une ouverture d'acc­s form~e dans le tissu, d'une mani­re qui rend facile la s~paration du tissu et qui permet de minimiser l'incision, la rupture ou d'autres dommages du tissu corporel contigu entourant l'ouverture d'acc­s.

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