Patent ID: 9414858
Filing Date: 2016-08-16
CPC Classification: A61B

Claim Text:
1. A cutting device for cutting a tissue to be cut the cutting device comprising: an elongated shaft having a proximal end and a distal end, the elongated shaft defining a longitudinal axis, the elongated shaft including a lower portion extending from the distal end toward the proximal end of the elongated shaft, the lower portion including an outer surface and an inner surface, the inner surface being spaced apart from the outer surface, and including a first portion extending from the distal end toward the proximal end in a first path to a first junction, a second portion extending from the first junction toward the outer surface in a second path to a second junction, and a third portion extending from the second junction toward the proximal end in a third path, wherein the outer surface of the lower portion, and the inner surface of the lower portion are connected together proximal the distal end to define a blunt end, the blunt end being configured to contact tissue adjacent the tissue to be cut: an upper portion extending from the distal end of the elongated shaft toward the proximal end of the elongated shaft, the upper portion including an outer surface and an inner surface, the inner surface being spaced apart from the outer surface and including a first portion extending from the distal end toward the proximal end in a first path to a first junction, a second portion extending from the first junction toward the outer surface in a second path to a second junction, and a third portion extending from the second junction toward the proximal end; and a cutting element disposed between the lower portion and the upper portion and configured for retractable extension beyond the distal end of the elongated shaft so as to contact the tissue to be cut, the cutting element configured to cut at least a portion of the tissue to be cut, thereby producing cut tissue; wherein the blunt end of the lower portion is configured to prevent cutting by the cutting element of the tissue adjacent to the tissue to be cut; and wherein a length of the lower portion between the proximal end and the distal end is greater than a length of the upper portion between the proximal end and the distal end.