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Surgical stapler with universal articulation and tissue pre-clamp

  • US 10,219,805 B1
  • Filed: 11/20/2018
  • Issued: 03/05/2019
  • Est. Priority Date: 10/04/2002
  • Status: Active Grant
First Claim
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1. A surgical tool for performing robotic surgery, the surgical tool comprising:

  • a shaft having a proximal end and a distal end; and

    a tool assembly attached to the distal end of the shaft, the tool assembly comprising;

    a clamping member without a knife blade, the clamping member comprising;

    a lower transverse member comprising first and second transverse protrusions extending in substantially opposite directions along a first axis, each of the first and second transverse protrusions having an upper engagement surface,an upper transverse member comprising third and fourth transverse protrusions extending in substantially opposite directions along a second axis, the second axis being substantially parallel to the first axis, andan upward extension extending between and connecting the lower transverse member and the upper transverse member along a third axis substantially perpendicular to the first and second axes, the upper transverse member and the lower transverse member being substantially transverse to the upward extension,a first jaw comprising;

    a proximal end,a distal end,the first jaw having a support channel between the proximal end of the first jaw and the distal end of the first jaw, the support channel being configured to receive a staple cartridge assembly, the staple cartridge having at least one tab, a longitudinal slot, and at least three rows of staples disposed on each side of the longitudinal slot, the at least three rows of staples on each side of the longitudinal slot being substantially parallel to the longitudinal slot, the first jaw further comprising at least one aperture along an edge of the first jaw, and the at least one tab of the staple cartridge being engageable with the at least one aperture of the first jaw, at least the at least one aperture and the at least one tab being configured to cooperate to retain the staple cartridge within the support channel,at least one pulley in the support channel, anda surface of the first jaw having a longitudinal slot between the proximal end of the first jaw and the distal end of the first jaw, the surface of the first jaw being configured to engage with the upper engagement surfaces of the first and second transverse protrusions of the lower transverse member of the clamping member as the upward extension travels through the longitudinal slot such that the first and second transverse protrusions slide along the surface of the first jaw,a second jaw pivotable relative to the first jaw, the second jaw comprising;

    a proximal end,a distal end,an anvil having at least one anvil surface, the at least one anvil surface having at least one staple forming pocket, andthe anvil defining an elongated slot between the proximal end of the second jaw and the distal end of the second jaw, the elongated slot being configured to receive the third and fourth transverse protrusions of the upper transverse member of the clamping member as the upward extension travels through the elongated slot, andat least one cable extending at least partially through the support channel and around at least one of the at least one pulley, wherein force on the at least one cable causes the clamping member to along the first and second jaws such that the upper engagement surfaces of the first and second transverse protrusions of the lower transverse member of the clamping member move along the surface of the first jaw and the third and fourth transverse protrusions of the upper transverse member of the clamping member move through the elongated slot and causes at least one of;

    the first and second jaws to clamp, andstaples to be ejected from a staple cartridge assembly when a staple cartridge assembly is received within the support channel of the first jaw.

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