Orthopedic bone plug cutter
AssigneeIntermedics Orthopedics, Inc.
InventorsBrian D. Burkinshaw, John L. Wheeler
Life of this patent
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Abstract
An orthopedic bone plug cutter for cutting a customized bone plug for use with prosthesis having stems of complex geometry, such as a cruciate stem. The bone plug cutter comprises an anvil which supports a piece of bone obtained intraoperatively. A specialized cutting head is forced against the anvil by a parallel jaw clamp. The cutting head can then be removed from the clamp and the bone plug extruded from the cutter with a plunger.
Claims9
An orthopedic bone plug cutter for cutting a customized scavenged bone plug for insertion in the medullar canal of a patient to retain bone cement in an area surrounding a prosthesis, said prosthesis having an articulating surface and a shaft adapted to be implanted in the medullar canal, said shaft having a proximal end adapted to be connected to said articulating surface and a distal end spaced away from said articulating surface, said distal end having a perimeter, said bone plug cutter comprising:
- means for shaping an intact plug from a segment of bone, said shaping means having a cutting head having a blade on one end thereof, said blade circumscribing a customized perimeter, said customized perimeter being congruent with said perimeter of said distal end of said prosthesis, said blade having an inside wall and an outside wall and a bevel along the perimeter of said outside wall, said bevel extending in an inward and distal direction from said outside wall toward said inside wall;
- an anvil confronting said blade;
- and
- a clamp means connecting said shaping means and said anvil for forcing said blade of said cutting head against said anvil.
Dependencies are inferred from the claim text.