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Powered laryngeal cutting blade

  • US 6,620,180 B1
  • Filed: 10/20/2000
  • Issued: 09/16/2003
  • Est. Priority Date: 09/09/1998
  • Status: Expired due to Term
First Claim
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1. A laryngeal cutting blade comprising:

  • an outer blade assembly including an outer tubular member having a proximal portion for mounting to a powered handpiece and a distal portion extending distally to a rounded distal end having a cutting window therein, said cutting window being configured with a plurality of cutting teeth extending along longitudinal sides of said cutting window, said cutting teeth having a blunt outer edge and a sharp inner edge, said distal portion of said outer tubular member being cylindrical, said proximal portion of said outer tubular member being cylindrical, and said distal portion of said outer tubular member having an external diameter smaller than an external diameter of said proximal portion of said outer tubular member;

    a hollow inner blade assembly rotatably received in said outer blade assembly and having a drive shaft for mounting to the powered handpiece and a cutting tip coupled to said drive shaft, said cutting tip including a cutting opening disposed adjacent said cutting window of said outer blade assembly, said cutting opening being configured with a plurality of cutting teeth extending along longitudinal sides of said cutting opening, said cutting teeth of said cutting opening having a blunt inner edge and a sharp outer edge; and

    a suction passage extending through said inner blade assembly to permit aspiration of cut tissue through said cutting blade.

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