Patent ID: 8992424
Filing Date: 2015-03-31
Classification: A61B

Abstract:
1. An endo-surgical device, comprising: a cannula, including a shaft portion and a prow, said prow being located at the distal end of said shaft portion, the walls and bottom of said prow defining a cavity that is open at top of the prow; said bottom of said prow being lower than the lower surface of said shaft portion and said walls of said prow being wider than side surfaces of said shaft portion and at least a portion of said top of said prow being higher than an upper surface of said shaft portion; said prow further including a pivot pin; a cutting blade contained in, and deployable from said prow, at least a portion of said cutting blade being retained by said pivot pin in said prow, said cutting blade in a first position, being shielded by closely spaced ribs in the cavity of said prow; said cutting blade including a blade slot slideably engaged with said pivot pin; an actuation mechanism connected to said blade such that actuation of said actuation mechanism causes said blade slot to slide relative to said pivot pin; and said blade slot and pivot pin configured to deploy a distal tip of said blade along an arcuate path that is an arc of a circle that projects above and towards the distal end of the prow upon actuation by said actuation mechanism.