Trocar assembly
First Claim
1. A surgical system for penetrating tissue, which comprises:
- a cannula assembly including;
a cannula housing;
a cannula sleeve depending from the cannula housing and defining a longitudinal axis; and
an object seal disposed in mechanical cooperation with the cannula housing and being adapted to establish a substantial seal about an object inserted therethrough, the object seal comprising;
a rigid insert including a first horizontal surface, a first vertical wall disposed inwardly of the first horizontal surface, and a second vertical wall disposed inwardly of the first vertical wall, the first vertical wall having a first diameter, the second vertical 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 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;
an obturator assembly at least partially positionable within the cannula assembly, the obturator assembly including an obturator housing and an obturator member extending from the obturator housing, the obturator member having a leading penetrating member adapted to penetrate tissue.
2 Assignments
0 Petitions
Accused Products
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.
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Citations
17 Claims
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1. A surgical system for penetrating tissue, which comprises:
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a cannula assembly including; a cannula housing; a cannula sleeve depending from the cannula housing and defining a longitudinal axis; and an object seal disposed in mechanical cooperation with the cannula housing and being adapted to establish a substantial seal about an object inserted therethrough, the object seal comprising; a rigid insert including a first horizontal surface, a first vertical wall disposed inwardly of the first horizontal surface, and a second vertical wall disposed inwardly of the first vertical wall, the first vertical wall having a first diameter, the second vertical 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 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;an obturator assembly at least partially positionable within the cannula assembly, the obturator assembly including an obturator housing and an obturator member extending from the obturator housing, the obturator member having a leading penetrating member adapted to penetrate tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification