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Surgical instrument

DC
  • US 7,147,650 B2
  • Filed: 04/12/2004
  • Issued: 12/12/2006
  • Est. Priority Date: 10/30/2003
  • Status: Expired due to Term
First Claim
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1. A surgical instrument comprising:

  • an elongated instrument shaft having proximal and distal ends;

    a tool disposed from the distal end of the instrument shaft; and

    a control handle disposed from the proximal end of the instrument shaft;

    said tool being coupled to the distal end of said elongated instrument shaft via a first movable member;

    said control handle coupled to the proximal end of said elongated instrument shaft via a second movable member;

    whereby movement of said control handle with respect to said elongated instrument shaft via said second movable member causes attendant movement of said tool with respect to said elongated instrument shaft via said first movable member;

    wherein both of the movable members comprise a bendable motion member, each bendable motion member providing at least one degree of freedom and the bending stiffness of the second movable member is greater than the bending stiffness of the first movable member.

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