Surgical circular stapler with tissue retention arrangements
First Claim
1. A surgical instrument comprising:
- an elongated shaft defining a central axis, said elongated shaft having a distal end portion configured to operably support a circular staple cartridge therein;
a plurality of acquisition members operably supported within said elongated shaft, each said acquisition member having a flexible tissue-piercing distal portion that is radially deployable away from said central axis such that upon application of a deployment motion to said plurality of said acquisition members, said plurality of acquisition members extend simultaneously in a plurality of radial directions relative to an outer perimeter of said elongated shaft;
at least one flexible knife member movably supported in said elongated shaft, each said knife member having a distal cutting portion that is axially advanceable out of said distal end portion of said elongated shaft upon application of an axial actuation motion thereto;
a rotary actuator operably interfacing with each said knife member such that each said knife member is selectively rotatable about said central axis upon application of a rotary actuation motion to said rotary actuator.
1 Assignment
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Accused Products
Abstract
Surgical instruments and procedures for performing a circular anastomosis of a tubular organ. The surgical instruments may include selectively deployable tissue acquisition members configured to puncture through a portion of the tubular organ and position the portion of the organ adjacent to a fastener face of a staple cartridge supported in the instrument. At least one cutting member may be radially deployed and rotated to sever the positioned portion of organ from a distal portion of the organ. An anvil may be employed to draw another portion of the organ adjacent to the portion of organ positioned adjacent to the fastener face of the staple cartridge. The staples may then be deployed through the adjacent portions of organ and an annular knife may be advanced through the adjacent organ portions to complete the anastomosis.
1968 Citations
13 Claims
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1. A surgical instrument comprising:
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an elongated shaft defining a central axis, said elongated shaft having a distal end portion configured to operably support a circular staple cartridge therein; a plurality of acquisition members operably supported within said elongated shaft, each said acquisition member having a flexible tissue-piercing distal portion that is radially deployable away from said central axis such that upon application of a deployment motion to said plurality of said acquisition members, said plurality of acquisition members extend simultaneously in a plurality of radial directions relative to an outer perimeter of said elongated shaft; at least one flexible knife member movably supported in said elongated shaft, each said knife member having a distal cutting portion that is axially advanceable out of said distal end portion of said elongated shaft upon application of an axial actuation motion thereto; a rotary actuator operably interfacing with each said knife member such that each said knife member is selectively rotatable about said central axis upon application of a rotary actuation motion to said rotary actuator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A surgical instrument comprising:
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a handle assembly; an elongated shaft protruding from said handle assembly and defining a central axis, said elongated shaft terminating in a stapler head comprising; a circular staple cartridge having a fastener face; and an axially movable cutting member; a firing member operably supported in said elongated shaft and oriented to apply a firing motion to said circular staple cartridge; an anvil shaft assembly operably supported within said elongated shaft and configured to receive actuation motions from said handle assembly to cause said anvil shaft assembly to move axially within said elongated shaft such that a distal connection portion thereof moves axially relative to said fastener face; an anvil removably attachable to said distal connection portion of said anvil shaft assembly; an acquisition housing movably supported with said elongated shaft and operably supporting therein a plurality of acquisition members that each have a distal tissue acquisition portion that is selectively axially advanceable out of a distal end of said acquisition housing, each said tissue acquisition portion configured to flex radially away from said central axis when axially advanced out of said distal end of said acquisition housing; a cutter housing movably supported within said elongated shaft such that said cutter housing may be selectively axially and rotatably moved relative to said elongated shaft; and a plurality of knife members movably supported in said cutter housing, each said knife member having a distal cutting portion that is axially advanceable out of a distal end portion of said cutter housing upon application of an axial actuation motion thereto. - View Dependent Claims (12, 13)
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Specification