Bladeless obturator for use in a surgical trocar assembly
AssigneeTyco Healthcare Group LP
InventorRobert C. Smith
Life of this patent
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Abstract
An obturator assembly comprising an obturator housing, an obturator member and an obturator sleeve is disclosed. The obturator member is mounted to the obturator housing, defines a longitudinal axis, and has proximal and distal ends. The obturator member includes an interchangeable obturator rod and a penetrating end. The penetrating end defines a substantially planar dissecting segment and a central rod segment extends from the planar dissecting element. The obturator sleeve is coaxially mounted about the obturator member and is adapted for reciprocal longitudinal movement between a retracted position and an extended position.
Claims18
An obturator assembly, which comprises:
- an obturator housing;
- an obturator member mounted to the obturator housing, the obturator member defining a longitudinal axis and having proximal and distal ends, the obturator member including an interchangeable obturator rod and a penetrating end, the penetrating end defining a substantially planar dissecting segment and a central rod segment extending distally beyond a distal-most end of the substantially planar dissecting element, the planar segment having blunt outer edges, the central rod having a blunt distal entry surface;
- an obturator sleeve coaxially mounted about the obturator member and adapted for reciprocal longitudinal movement between a retracted position and an extended position;
- wherein the distal entry surface of the penetrating end is exposed from the obturator sleeve when in the extended position of the obturator sleeve.
An obturator assembly, which comprises:
- an obturator housing
- an obturator member mounted to the obturator housing, the obturator member defining a longitudinal axis and having proximal and distal ends, the obturator member including an obturator rod and a penetrating end, the penetrating end defining a substantially planar dissecting segment and a central rod segment extending distally beyond a distal-most end of the substantially planar dissecting element, the planar dissecting segment including an outer surface having a convex segment and a concave segment, the convex segment being located distally of the concave segment;
- an obturator sleeve coaxially mounted about the obturator member and adapted for reciprocal longitudinal movement between a retracted position and an extended position.
An obturator assembly, which comprises:
- an obturator housing;
- an obturator member mounted to the obturator housing, the obturator member defining a longitudinal axis and having proximal and distal ends, the obturator member including an obturator rod and a distally positioned penetrating end including a distal end surface;
- the penetrating end defining a substantially planar segment with substantially blunt outer edges leading toward and proximal of the distal end surface;
- and
- an obturator sleeve coaxially mounted about the obturator member and adapted for reciprocal longitudinal movement between a retracted position and an extended position, the obturator sleeve having a nose adjacent the penetrating end, the nose being correspondingly dimensioned and configured such that the outer edges of the penetrating end are at least partially exposed from the nose when the obturator sleeve is in the extended position.
Dependencies are inferred from the claim text.