Collapsible anvil assembly and applicator instrument
First Claim
1. An installation system for laparoscopic insertion of anvil assembly within a patient comprising:
- a) an anvil assembly having a shaft member, the shaft member having mounting means at a proximal end thereof and an anvil member affixed to a distal end of said shaft member, said shaft member having an axial bore therein and a plurality of suction orifices extending transversely through said shaft member, said suction orifices being communicable with said bore; and
b) an installation tool member having a proximal end and a distal end, said installation tool member including means at said distal end for engaging said mounting means of said anvil assembly, and further including means for connecting said axial bore of said shaft member to a source of suction, such that when said source of suction is applied to said tool member, said suction causes a surrounding tissue section to be drawn against said suction orifices of said shaft member.
2 Assignments
0 Petitions
Accused Products
Abstract
A collapsible anvil assembly and applicator instrument for use with a surgical stapler. The collapsible anvil assembly includes an anvil shaft and a plurality of anvil segments, having staple clinching buckets thereon, flexibly affixed to the anvil shaft which are movable between a collapsed or radially inwardly deflected condition and an expanded or radially outwardly deflected condition. Immobilizing means in the form of an axially slidable locking ring is provided to fix and maintain the anvil segments in the expanded condition. Mounting element are also provided for subsequent detachable mounting of the anvil assembly on a surgical stapler. The collapsible anvil assembly may also include a suction purse stringing device which attracts and holds a surrounding tissue section within the anvil segments. Additionally, an axially slidable tissue holding ring or snap cap is provided to lock the held tissue section within the anvil segments.
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Citations
17 Claims
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1. An installation system for laparoscopic insertion of anvil assembly within a patient comprising:
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a) an anvil assembly having a shaft member, the shaft member having mounting means at a proximal end thereof and an anvil member affixed to a distal end of said shaft member, said shaft member having an axial bore therein and a plurality of suction orifices extending transversely through said shaft member, said suction orifices being communicable with said bore; and b) an installation tool member having a proximal end and a distal end, said installation tool member including means at said distal end for engaging said mounting means of said anvil assembly, and further including means for connecting said axial bore of said shaft member to a source of suction, such that when said source of suction is applied to said tool member, said suction causes a surrounding tissue section to be drawn against said suction orifices of said shaft member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An installation system for laparoscopic insertion of an anvil assembly within a patient comprising:
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an anvil assembly having a shaft member with mounting means at a proximal end thereof and an anvil member at a distal end thereof; a snap cap axially slidable along said shaft member for securing a tissue section against a proximal end of said anvil member; and
,an installation tool member having a proximal end and a distal end, said installation tool member including means at said distal end for engaging said mounting means of said anvil assembly, said installation tool further having a first actuation member for advancing said snap cap against said proximal end of said anvil member. - View Dependent Claims (11, 12, 13)
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14. An installation system for laparoscopic insertion of an anvil assembly in a patient, said installation system comprising:
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a) an installation tool having a frame member; b) an anvil assembly having mounting means at a proximal end of a shaft member of the anvil assembly for releasably holding said anvil assembly within said frame member; c) release means associated with a proximal end of said frame member for remotely releasing said mounting means; d) an axial bore within said shaft member; and e) a plurality of suction orifices extending transversely through said shaft member and communicable with said axial bore. - View Dependent Claims (15)
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16. An installation system for laparoscopic insertion of an anvil assembly within a patient comprising:
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a) an anvil assembly having mounting means; and b) an installation tool member having a proximal end and a distal end, said installation tool member including means at said distal end for engaging said mounting means of said anvil assembly, and c) a circular stapler assembly including; i) a frame member having means for mounting said anvil assembly; ii) a staple carrying part containing staples at a distal end of said frame member; and iii) means for driving said staples from said staple carrying part towards said anvil assembly.
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17. A surgical fastening device comprising:
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a) a stapling instrument having an elongated body with a central bore therethrough; and b) an anvil member having a shaft and mounted at a distal end of said elongated body, said shaft having a central bore communicable with said central bore of said elongated body, said anvil member further having radial apertures extending between an outer surface of said shaft and said central bore of said shaft, wherein providing a source of vacuum to said central bore of said stapling instrument creates a vacuum in said radial apertures to draw a surrounding tissue section against said shaft.
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Specification