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Cutting blade assembly for an arthroscopic surgical instrument drive system

  • US 5,632,759 A
  • Filed: 09/10/1993
  • Issued: 05/27/1997
  • Est. Priority Date: 02/18/1987
  • Status: Expired due to Term
First Claim
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1. A disposable, limited use cutting blade assembly for use with a handpiece having motor means for rotatably driving said cutting blade assembly, the handpiece having bore means for receiving the cutting blade assembly and sensing means disposed adjacent said bore means for sensing a coded representation of a predetermined characteristic of the cutting blade assembly to control an operating parameter of said motor, said cutting blade assembly comprising:

  • an elongate tubular outer member having a distal end with an opening therein, a proximal end, a plastic hub unremovably secured to said proximal end so as to be a permanent part of said outer member, said hub being configured to be directly received and engaged in said handpiece bore means in a particular orientation relative to the sensing means, and having a coding structure in said hub for identifying the predetermined characteristic of the cutting blade to be sensed by the sensing means; and

    an elongate inner member received in said outer member and having a distal cutting end disposed adjacent said opening in said distal end of said outer member, and a proximal end adapted to be received in the handpiece bore means and rotatably driven by the motor means to rotate said inner member in said outer member.

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