摘要:
Disclosed is a surgical stapling apparatus comprising: a) a handle assembly including a movable handle, the movable handle being movable through an actuation stroke; b) an elongated body extending distally from the handle assembly and defining a longitudinal axis; c) a tool assembly pivotably mounted adjacent the distal end of the elongate body, the tool assembly having a cartridge assembly and an anvil assembly; d) an actuation shaft supported at least in part within the handle assembly and mounted for longitudinal movement in response to manipulation of the actuation handle; e) an articulation mechanism including an articulation lever mounted adjacent the handle assembly and an articulation link, the articulation link having a proximal end operatively connected to the articulation lever and a distal end positioned adjacent the distal end of the elongated body; and f) a drive assembly having a drive beam including a plurality of sheets.
摘要:
An anvil 120 is disclosed for utilization in conjunction with a surgical stapling instrument configured to apply rows of staples to body tissue. The anvil is provided with graduations 130 to delineate the boundaries of the staple forming area defined thereby, as well as to delineate the range through which a fastener driving assembly and optional knife blade 124 translate during a stapling operation.
摘要:
A self contained gas powered endoscopic surgical apparatus 50 is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes an anvil member 56 and a surgical fastener cartridge member 58 mounted to the distal end of an elongated endoscopic portion 54. A tubular collar 220 of the endoscopic portion moves distally to engage the anvil member and bias the anvil member and the cartridge member into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and the cartridge member. A self contained pneumatic system 68 is disposed in the surgical apparatus and is actuable to eject and/or form the surgical fasteners in the clamped body tissue. The apparatus further comprises a locking means for preventing firing of the instrument after it has been fired a predetermined number of times. A counter (400-406) for displaying the number of times the apparatus has been fired may be provided. A firing interlock (408-414) is also shown which prevents accidental actuation of the firing trigger. A clamping interlock (430-434) is shown which prevents approximation of the jaws when the jaws are either misaligned or improperly inserted into the instrument.
摘要:
Disclosed in a surgical stapling apparatus comprising an articulation mechanism (120) including a lever (30) and a cam member (136), the lever being operatively connected to the cam member, the cam member being operatively connected to the first articulation link and including a stepped cam slot, wherein the lever is movable to articulate the tool assembly relative to the longitudinal axis of the proximal housing portion, each step of the stepped cam slot defining a predetermined articulated position of the tool assembly.
摘要:
Disclosed in a surgical stapling apparatus comprising an articulation mechanism (120) including a lever (30) and a cam member (136), the lever being operatively connected to the cam member, the cam member being operatively connected to the first articulation link and including a stepped cam slot, wherein the lever is movable to articulate the tool assembly relative to the longitudinal axis of the proximal housing portion, each step of the stepped cam slot defining a predetermined articulated position of the tool assembly.
摘要:
A self contained gas powered endoscopic surgical apparatus 50 is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes an anvil member 56 and a surgical fastener cartridge member 60mounted to the distal end of an elongated endoscopic portion. A tubular collar 222 of the endoscopic portion moves distally to engage the anvil member and bias the anvil member and the cartridge member into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and the cartridge member. A self contained pneumatic system 68 is disposed in the surgical apparatus and is actuable to eject and/or form the surgical fasteners in the clamped body tissue. The apparatus further comprises a mechanism 400 for preventing the premature actuation of the pneumatic system during shipment of the instrument. A mechanism 602, 604 for frictionally engaging body tissue inserted between the anvil member and the cartridge is also provided. In addition, a mechanism 516, 552 for inhibiting external exposure of a tissue cutting structure is provided.
摘要:
A self contained gas powered endoscopic surgical apparatus 50 is provided for placing lateral lines of surgical fasteners into body tissue. The apparatus includes an anvil member 56 and a surgical fastener cartridge member 60mounted to the distal end of an elongated endoscopic portion. A tubular collar 222 of the endoscopic portion moves distally to engage the anvil member and bias the anvil member and the cartridge member into cooperative alignment, thereby clamping body tissue to be fastened between the anvil member and the cartridge member. A self contained pneumatic system 68 is disposed in the surgical apparatus and is actuable to eject and/or form the surgical fasteners in the clamped body tissue. The apparatus further comprises a mechanism 400 for preventing the premature actuation of the pneumatic system during shipment of the instrument. A mechanism 602, 604 for frictionally engaging body tissue inserted between the anvil member and the cartridge is also provided. In addition, a mechanism 516, 552 for inhibiting external exposure of a tissue cutting structure is provided.
摘要:
An apparatus for applying surgical fasteners to body tissue comprising:
a) a body portion (64) extending from a handle portion (62) and defining a longitudinal axis; b) an elongated housing (54) defining a proximal section for engagement in a distal end of said body portion and a distal section for mounting a cartridge assembly (60) containing a plurality of surgical fasteners, said cartridge assembly defining a tissue contacting surface, a proximal end, and a distal end; c) an anvil member (56) defining a fastener forming surface against which fasteners ejected from said cartridge assembly are driven, said anvil member mounted relative to said cartridge assembly and movable between an open position wherein said fastener forming surface is spaced from said tissue contacting surface and a closed position wherein said fastener forming surface and said tissue contacting surface are in close co-operative alignment; wherein the apparatus is characterized by means (602, 604) movably mounted to at least one of said housing and said anvil member for frictionally engaging tissue disposed therebetween to inhibit the movement thereof.