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Rotary knife cutting systems

  • US 8,215,533 B2
  • Filed: 05/17/2011
  • Issued: 07/10/2012
  • Est. Priority Date: 08/29/2007
  • Status: Active Grant
First Claim
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1. A rotary cutting system for use with a surgical stapling device comprising:

  • a knife blade having a distal cutting edge and a proximal base;

    a support base positioned within a surgical stapling device;

    a mainspring for imparting motion to the knife blade relative to the support base; and

    a hammer member interposed between the knife blade and the mainspring, the hammer member being engageable with the proximal base of the knife blade, wherein a first end of the mainspring is attached to the support base and a second end of the mainspring is engageable with the hammer member.

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