Cutting blade and cutting blade assembly for ophthalmic...

Details Cutting blade and cutting blade assembly for ophthalmic... Cutting blade and cutting blade assembly for ophthalmic...

A - Human Necessities

61

F

A61F 9/013 (2006.01)

Patent

CA 2410357

A blade and a blade assembly wherein the blade has a front, beveled, sharpened edge (13), two side edges (14, 16) meeting at a point (18) spaced from the front edge and at least one attachment structure (20, 22) extending outwardly from each side edge. A blade holder, which extends beyond the side edges and attachment structures of the blade, sits on a top surface of the blade and is attached to the blade by a portion thereof which receives the attachment structures. The holder has an opening in an exposed surface to receive an extension from a drive mechanism such that when the drive mechanism is activated the blade is caused to vibrate of oscillate. The blade is oscillated in a lateral fashion when driven by a rod rotating along a circular path.

L'invention concerne une lame et un ensemble lame. Ladite lame comprend un bord avant aiguisé et biseauté (13), deux bords latéraux (14, 16) se rencontrant en un point (18) espacé du bord avant et au moins une structure de fixation (20, 22) faisant saillie à partir de chaque bord latéral. Un porte-lame qui dépasse des bords latéraux et des structures de fixation de la lame et qui repose sur une surface supérieure de la lame, est fixé sur la lame par une partie qui reçoit les structures de fixation. Le porte-lame comprend une ouverture pratiquée dans une surface découverte afin de recevoir un prolongement d'un mécanisme d'entraînement, de sorte que, lorsque le mécanisme d'entraînement est activé, la lame vibre latéralement lorsqu'elle est entraînée par une tige tournant le long d'un trajet circulaire.

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