US 9,788,857 B2Granted

Trocar assembly

AssigneeCovidien LP

InventorsMichael Bettuchi, Robert C. Smith, Michael Davis, Brian Rockrohr, Gregory Fischvogt

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Abstract

A surgical system comprising a cannula assembly and an obturator assembly for penetrating tissue is disclosed. A cover of the cannula assembly is mounted to a cannula housing and has a cover aperture therethrough. The cover has a trailing end face defining a predetermined geometrical configuration, at least a portion of the trailing end face is obliquely arranged relative to a longitudinal axis and terminates in, and leads toward the cover aperture to facilitate guiding of the surgical object through the cover aperture. The obturator assembly includes an obturator housing and an obturator member. The obturator housing has a housing base defining a leading end face, which defines a predetermined geometrical configuration corresponding to the predetermined geometrical configuration of the trailing end face of the cover to mate therewith upon assembly of the obturator assembly with the cannula assembly.

Claims18

Dependent claims

An object seal for use with a cannula assembly, the object seal configured to maintain a substantially fluid-tight seal with respect to an object inserted therethrough, the object seal comprising:

a rigid insert including a first horizontal surface, a first vertical annular wall disposed inwardly of the first horizontal surface and extending distally from the first horizontal surface to a distal-most end of the object seal, and a second vertical annular wall defined between an outer vertical surface of the second vertical annular wall and an inner vertical surface of the second vertical annular wall, the outer vertical surface of the second vertical annular wall disposed inwardly of the first vertical annular wall and proximally of the first horizontal surface, the first vertical annular wall having a first diameter, the second vertical annular wall having a second diameter, the first diameter being larger than the second diameter;
and
an elastomeric seal disposed in mechanical cooperation with the rigid insert, the elastomeric seal including a horizontal seal surface disposed within the second vertical annular wall, and the elastomeric seal including an aperture disposed therein for accommodating insertion of a surgical instrument therethrough, the aperture defining a third diameter, the third diameter being smaller than the second diameter.

Dependencies are inferred from the claim text.

Facts

Application: 14/275,215Filed 12 May 2014 · division
Priority: 10 Oct 2008
Published: US 2015/0126935 A17 May 2015
Granted: 17 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

A61B 17/3462
Trocars; Puncturing needles: with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with…
A61B 17/3421
Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating: cannulas
A61B 17/3474
Trocars; Puncturing needles: insufflating needles, e.g. Veress needles
A61B 17/3496
With safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors: protecting sleeves or…

Family

Application61/104,433Us provisional application · filed 10 Oct 2008
Application12/573,283Parent of this division · filed 5 Oct 2009
US 2015/0126935 A1Pre-grant publication · published 7 May 2015
US 8,740,925 B2Parent of this division
US 2010/0094228 A1Published application
US 9,788,857 B2This patent

From the US filing history. Foreign family members aren’t listed.