Device for performing an incision

摘要

A medical cutting device is disclosed in which a pivoted element (50) is actuated by a trigger (34) and a cutting blade (30) is attached to the pivoted element (50) by a flexible connector and cam elements (46, 49) cause the blade (30) to move in an essentially parabolic path when making an incision on a patient.

主权项

1. A cutting device comprising:
a pivoted element including a trigger arm; a cutting blade; a flexible spring element connecting said blade to said pivoted element; and cam elements of a size and shape cooperating with said flexible spring element such as to move said blade from a pre-cutting position to and through a cutting position along a substantially parabolic path upon movement of said trigger arm; wherein the cutting device further includes a housing having a first stop; and the pivoted element further includes a second relatively flexible arm connecting the flexible spring element to the trigger arm, the second relatively flexible arm having an enlarged end comprising a catch, the catch comprising an inclined surface extending from the second relatively flexible arm, the inclined surface of the catch and the first stop configured to be in engagement to prevent movement of the blade in the pre-cutting position, the pivoted element being arranged to pivot within the housing responsive to activation of the trigger arm by a user of a force which causes the deflection of the second relatively flexible arm to a deflected position for the inclined surface of the catch to release from the first stop, thereby allowing the flexible spring element and the cutting blade to move through the cutting position assisted by action of the second relatively flexible arm reverting from the deflected position.