Spinal anulus cutter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 22, 1997
Grant Date -
N/A
app pub date -
Oct 17, 1994
filing date -
Oct 17, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spinal anulus cutter for cutting a multisided flap in an encapsulating ligament, such as an anulus of a human intervertebral disc, to provide access to an interior space or material surrounded by the ligament. The spinal anulus cutter is characterized by a knife blade comprised of a plurality of walls which are connected together to define a closed side and an open side. Further, a cutting edge is formed at the forward edge of the walls which is configured to cut the multisided flap in the ligament when an axial force is transmitted to the knife blade in a direction towards the cutting edge. The flap will conform in shape and size to the form of the knife blade, whereby the open side of the knife blade will not cut the ligamentary tissue.
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