Port fixation with varying thread diameter

Details Port fixation with varying thread diameter Port fixation with varying thread diameter

A - Human Necessities

61

B

A61B 17/34 (2006.01) A61B 17/94 (2006.01)

Patent

CA 2728899

A surgical portal device for use in an endoscopic procedure includes an elongated body portion dimensioned for insertion through tissue. The body portion includes an outer wall defining a longitudinal axis and having a proximal end, a distal end, and a longitudinal lumen configured to allow a surgical instrument to pass therethrough. A plurality of threaded fixation segments is disposed on an exterior surface of the outer wall of the body portion. The threaded fixation segments are dimensioned and configured to engage tissue surrounding an opening to secure the elongated body at a predefined location within the tissue. The threaded fixation segments include a proximal threaded fixation segment having an average first thread diameter and a distal threaded fixation segment having an average second thread diameter less than the average first thread diameter. In one embodiment, each of the threaded fixation segments have different average thread diameters. The average thread diameters of the threaded fixation segments may gradually increase from a distal-most threaded fixation segment to a proximal- most threaded fixation segment.

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