Patent ID: 8398643
Filing Date: 2013-03-19
Classification: A61C

Abstract:
1. A bone cutting device for cutting maxillary bone and injecting a filler through the maxillary bone and under a subantral membrane to separate the subantral membrane from the maxillary bone and fill the space formed therebetween, the device comprising: a) a hollow tubular element having a diameter sized to be inserted into a pilot hole in the maxillary bone, said tubular element including a proximal end, a distal end opposite said proximal end, a longitudinal axis, and a threaded exterior surface configured to be threadedly advanced into the pilot hole; b) a piston longitudinally displaceable within said hollow tubular element; and c) a cutter mounted to said piston and operably disposed adjacent said distal end of said hollow tubular element, said cutter having at least one cutting blade wherein said cutter is spring biased into a distally displaced position relative to said distal end of said hollow tubular member, and can be axially loaded against said spring bias toward said distal end of said hollow tubular member, wherein a fluid path extends longitudinally through said hollow tubular element for guiding the filler, and said at least one cutting blade of said cutter is configured to redirect the filler in a transverse direction relative to said longitudinal axis.