Blunt tip obturator

摘要

A surgical obturator comprising an elongate shaft extending along an axis between a proximal end and a distal end includes a bladeless tip disposed at the distal end of the shaft. The tip has a blunt point and a pair of shorter side surfaces separated by a relatively longer pair of opposing surfaces to form in radial cross-section a geometric shape that has a longer length and relatively narrower width. The side surfaces and opposing surfaces terminate in end surfaces located proximally from the blunt point. The end surfaces extend radially outwardly from opposite locations of the outer surface. A conical surface facilitates initial insertion of the obturator and the geometric shape facilitates separation of consecutive layers of muscle tissue having fibers oriented in different directions and provides proper alignment of the tip between the layers of muscle.

主权项

1. A surgical obturator, comprising:
an elongate shaft extending along a longitudinal axis between a proximal end and a distal end; and a bladeless tip disposed at the distal end of the shaft having a conical surface forming proximally into an outer surface and distally to a blunt surface, said outer surface extending distally to the conical surface and having a pair of opposing surfaces separated by a pair of side surfaces; wherein the conical surface extends proximally from the blunt surface and is formed into the pair of opposing surfaces such that a portion of the conical surface formed in the opposing surfaces defines an intersection that is generally U-shaped; wherein the side surfaces define short sides of a rectangle and the opposing surfaces define long sides of the rectangle in a cross-section taken perpendicular to the longitudinal axis and along the outer surface; and wherein the side surfaces increase in length with consecutive proximal cross-sections taken perpendicular to the longitudinal axis.