Retrograde cutting instrument
AssigneeArthrex, Inc.
InventorRonald C. Iannarone
Life of this patent
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Abstract
An instrument for retrograde cutting of sockets or tunnels in bone for arthroscopic tenodesis. A retrograde cutter is used to form a recipient site socket from the inside out, i.e., using a retrograde technique, with minimal incisions of distal cortices and reduced intraarticular bone fragmentation of tunnel rims. The retrograde cutter is provided with a cutting blade that is configured to engage the shaft of the instrument and to lock onto the shaft.
Claims21
A retrograde cutter, comprising:
- a cannulated outer tube having a proximal end, a distal end and a longitudinal axis;
- an inner tube located within the outer tube;
- and
- a blade provided at the distal end of the outer tube, the blade comprising a cutting surface provided such that the retrograde cutter is configured to cut in a retrograde manner.
A rotary cutter for use in knee reconstruction surgery for forming tibial and femoral sockets, the rotary cutter comprising:
- a blade having a substantially disk-shape configuration, the blade comprising two opposed sides with two opposed surfaces, wherein one of the two opposed surfaces is a cutting surface provided with a plurality of teeth;
- and
- a shaft securely engaged to the blade so that the shaft is about perpendicular to the blade.
A method of conducting arthroscopic surgery comprising:
- inserting a retrograde cutting instrument into a joint cavity in the vicinity of at least a bone, the cutting instrument comprising a blade having a circular configuration, the blade comprising two opposed sides with two opposed surfaces, one of the two opposed surfaces being a cutting surface provided with a plurality of teeth;
- and
- forming a socket into the bone in a retrograde manner, using the cutting instrument.
A method of knee reconstruction comprising:
- providing a retrograde cutter having a blade with a substantially disk-shape configuration, the blade comprising two opposed sides with two opposed surfaces, one of the two opposed surfaces being a cutting surface provided with a plurality of teeth;
- inserting the retrograde cutter into a knee joint cavity so that the cutting surface of the blade faces the tibial plateau;
- and
- retrograde cutting into the tibia to form a socket in the tibia in a retrograde manner, using the retrograde cutter.
Dependencies are inferred from the claim text.