CPC A61F 9/00763 (2013.01) | 5 Claims |
1. A rotational cutter for delaminating a membrane from a retina of an eye, comprising:
a first shaft;
a second shaft comprising a blade portion, wherein the second shaft is coupled to a driver that is configured to at least partially rotate the second shaft relative to the first shaft, wherein rotating the second shaft rotates the blade portion for delaminating the membrane; and
a bottom portion configured to interface with a surface of the retina, wherein the bottom portion comprises one or more curved edges;
wherein:
the blade portion comprises upper teeth; and
the first shaft comprises:
an exposed portion configured to interface with the surface of the retina, the exposed portion having a curved back surface extending continuously from a proximal end of the exposed portion to the bottom portion; and
a second blade portion including the bottom portion, wherein the second blade portion comprises lower teeth;
wherein the lower teeth comprise a plurality of teeth between a left-most outer tooth and an opposing right-most outer tooth, wherein the left-most outer tooth has a greater height on a right side of the left-most outer tooth than a left side of the left-most outer tooth and the right-most outer tooth has a greater height on a left side of the rightmost outer tooth than a right side of the right-most outer tooth;
wherein the left-most outer tooth and the right-most outer tooth have a curved bottom edge extending between their respective left and right sides.
|