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Retrograde resection apparatus and method

  • US 10,045,788 B2
  • Filed: 05/12/2016
  • Issued: 08/14/2018
  • Est. Priority Date: 12/11/2006
  • Status: Active Grant
First Claim
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1. A retrograde resection apparatus, comprising:

  • a shaft having a first end region including a first and a second protrusion extending radially outward therefrom;

    a cutting blade having a disc-shaped body defining a top surface, and a bottom surface, and a central region about which said cutting blade is configured to rotate around, said cutting blade including;

    at least one cutting lip provided on said bottom surface;

    a slot extending through at least a portion of said central region of said disc-shaped body and towards a periphery of said cutting blade, said slot defining a top opening on said top surface and a bottom opening on said bottom surface; and

    a first and a second recess extending from at least a portion of said slot in said central region, said first and said second recesses each having an upper opening on said top surface of said disc-shaped body and a closed bottom surface opposite said upper opening;

    wherein said slot and said first end region of said shaft are configured to allow said first and said second protrusions to be advanced through said bottom opening and then through said top opening of said disc-shaped body; and

    wherein a first rotation of said shaft within said slot orientates said first and said second protrusions to be received through said upper openings and advanced into and engage said first and second recesses, respectively, such that a second, subsequent rotation of said shaft causes said cutting blade to rotate about said central region and a longitudinal axis of said shaft and allows said cutting blade to tilt relative to said longitudinal axis of said shaft and said cutting lip is facing a second end region of said shaft.

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