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Tunneling instrument for port access multivessel coronary artery bypass surgery

  • US 6,613,069 B2
  • Filed: 10/19/2001
  • Issued: 09/02/2003
  • Est. Priority Date: 02/22/1993
  • Status: Expired due to Fees
First Claim
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1. A surgical tunneling instrument for tunneling between adjacent body structures in a body cavity, the tunneling instrument comprising:

  • a shaft having a distal end, a proximal end and a lumen therebetween;

    a linkage extending through the lumen;

    an articulating finger at the end of the shaft, the articulating finger comprising;

    a first proximal member having a proximal end and a distal end opposite the proximal end, the proximal end being pivotably coupled to the shaft at a first point and coupled to the linkage at a second point laterally offset from the first point;

    a second proximal member having a proximal end pivotably coupled to the shaft and a distal end opposite the proximal end; and

    a distal member having a proximal end and a distal end opposite the proximal end, the distal end being configured for tunneling between the body structures, and the proximal end being pivotably coupled to the distal end of the first proximal member at a third point and pivotably coupled to the distal end of the second proximal member at a fourth point laterally offset from the third point; and

    means at the proximal end of the shaft for moving the linkage relative to the shaft, whereby the first proximal member pivots relative to the shaft about the first point and the distal member pivots relative to the first proximal member about the third point.

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