Multiple fire endoscopic stapling mechanism
First Claim
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1. A stapling mechanism comprising:
- a firing mechanism capable of moving along a longitudinal path defining a longitudinal axis;
a staple closing mechanism attached to said firing mechanism, said closing mechanism capable of closing staples;
a cartridge attached to said firing mechanism and said cartridge placed along said longitudinal axis and containing said firing mechanism; and
said cartridge containing a stack of staples arranged from a distalmost staple closest said staple closing mechanism to a proximal staple, each of said staples comprising a crown with a tissue facing distal side and a proximal side, and having two ends;
each said crown end having a notch, said notch comprising an indentation in said crown toward said distal side and away form said proximal side; and
a pair of legs, each leg attached to said notch and extending therefrom, and each leg having a sharpened distal end and said staples arranged such that each of said staples lie along said axis with the leg distal ends of a proximal staple contacting the corresponding crown notches of an adjacent distal staple; and
a transfer mechanism engageable with said firing mechanism and capable of transferring a staple from said staple stack and into said path, and comprising a lifter positioned in said cartridge and moveable transverse to said longitudinal axis, said lifter having a sloped surface, and the distalmost staple in said stack engageable with said sloped surface to move from said stack and into said path; and
whereinsaid cartridge is circular and is capable of being placed in a trocar tube 10 mm in diameter.
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Abstract
A unique hernia repair stapler is described which allows the forming of staples to attach prosthetics to tissue, or to approximate herniated tissue. The staple is useful in endoscopic operations and may be rotatable or stationary. The stapler has a unique forming and ejecting mechanism; as well, there is the availability of a loading mechanism useful for both cartridges and magazines of staples. An improved staple shape allows for better staple alignment, especially in a multiple load device.
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Citations
13 Claims
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1. A stapling mechanism comprising:
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a firing mechanism capable of moving along a longitudinal path defining a longitudinal axis; a staple closing mechanism attached to said firing mechanism, said closing mechanism capable of closing staples; a cartridge attached to said firing mechanism and said cartridge placed along said longitudinal axis and containing said firing mechanism; and said cartridge containing a stack of staples arranged from a distalmost staple closest said staple closing mechanism to a proximal staple, each of said staples comprising a crown with a tissue facing distal side and a proximal side, and having two ends; each said crown end having a notch, said notch comprising an indentation in said crown toward said distal side and away form said proximal side; and a pair of legs, each leg attached to said notch and extending therefrom, and each leg having a sharpened distal end and said staples arranged such that each of said staples lie along said axis with the leg distal ends of a proximal staple contacting the corresponding crown notches of an adjacent distal staple; and a transfer mechanism engageable with said firing mechanism and capable of transferring a staple from said staple stack and into said path, and comprising a lifter positioned in said cartridge and moveable transverse to said longitudinal axis, said lifter having a sloped surface, and the distalmost staple in said stack engageable with said sloped surface to move from said stack and into said path; and
whereinsaid cartridge is circular and is capable of being placed in a trocar tube 10 mm in diameter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An endoscopic cartridge comprising:
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a firing mechanism capable of moving along a longitudinal path and defining a longitudinal axis and containing a driver and an anvil; a stack of staples placed along said longitudinal axis; a transfer mechanism engageable with said firing mechanism and capable of transferring a staple from said staple stack and into said path, and comprising a lifter positioned in said cartridge and moveable transverse to said longitudinal axis, said lifter having a sloped surface, and the distalmost staple in said stack engageable with said sloped surface to move from said stack and into said path; and
whereinsaid cartridge is circular and is capable of being placed in a trocar tube 10 mm in diameter. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification