Surgical stapler with lockout mechanism
First Claim
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1. A surgical apparatus comprising:
- a) a cartridge supporting portion having a cartridge supported therein which contains a plurality of surgical fasteners and a plurality of pushers configured to eject the surgical fasteners from the cartridge;
b) an anvil supporting portion relatively movable with respect to the cartridge supporting portion and having an anvil surface against which the surgical fasteners are driven when they are ejected from the cartridge;
c) a cam bar retainer operatively associated with the cartridge and retaining at least two cam bars configured to sequentially interact with the pushers as the cam bar retainer translates distally from a pre-fired proximal position;
d) an actuator connected to the cam bar retainer for facilitating the translation thereof;
e) a first locking member extending from the actuator and configured to releasably engage a notch provided in the cartridge supporting portion to maintain the cam bar retainer in the pre-fired proximal position; and
f) a second locking member supported on the cam bar retainer and configured to engage an aperture provided within the cartridge supporting portion upon retraction of the cam bar retainer to a post-fired proximal position.
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Accused Products
Abstract
An apparatus for applying surgical fasteners is disclosed which includes a first lockout mechanism configured to prevent premature ejection of fasteners during shipment, and a second lockout mechanism to prevent reactuation of the apparatus after it has once been actuated.
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Citations
24 Claims
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1. A surgical apparatus comprising:
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a) a cartridge supporting portion having a cartridge supported therein which contains a plurality of surgical fasteners and a plurality of pushers configured to eject the surgical fasteners from the cartridge; b) an anvil supporting portion relatively movable with respect to the cartridge supporting portion and having an anvil surface against which the surgical fasteners are driven when they are ejected from the cartridge; c) a cam bar retainer operatively associated with the cartridge and retaining at least two cam bars configured to sequentially interact with the pushers as the cam bar retainer translates distally from a pre-fired proximal position; d) an actuator connected to the cam bar retainer for facilitating the translation thereof; e) a first locking member extending from the actuator and configured to releasably engage a notch provided in the cartridge supporting portion to maintain the cam bar retainer in the pre-fired proximal position; and f) a second locking member supported on the cam bar retainer and configured to engage an aperture provided within the cartridge supporting portion upon retraction of the cam bar retainer to a post-fired proximal position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A surgical apparatus comprising:
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a) an elongated carrier channel; b) a cartridge disposed in a distal portion of the carrier channel and containing a plurality of surgical fasteners and a plurality of pushers configured to eject the surgical fasteners from the cartridge body; c) a cam bar retainer disposed within the carrier channel and configured to translate therein in a longitudinal direction; d) an actuator connected to the cam bar retainer for facilitating the longitudinal translation thereof; e) at least two elongated cam bars retained by the cam bar retainer and configured to sequentially interact with the pushers as the cam bar retainer translates in a longitudinal direction; and f) a shipping lock pivotally mounted to the actuator and configured to releasably engage the carrier channel to maintain the cam bar retainer in a pre-fired proximal position to prevent movement of the cam bar retainer during shipping. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A surgical apparatus comprising:
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a) a cartridge supporting portion having a cartridge disposed therein which contains a plurality of surgical fasteners and a plurality of pushers configured to eject the surgical fasteners from the cartridge; b) an anvil supporting portion relatively movable with respect to the cartridge supporting portion and having an anvil surface against which the surgical fasteners are driven when they are ejected from the cartridge; c) a cam bar retainer operatively associated with the cartridge and retaining at least two cam bars configured to sequentially interact with the pushers as the cam bar retainer translates distally from a pre-fired proximal position; d) an actuator connected to the cam bar retainer for facilitating the translation thereof; e) a clasp positioned in the cartridge supporting portion and having first and second slots; and f) a detent extending from the cam bar retainer and positioned in the first slot when the cam bar retainer is in the pre-fired proximal position and positioned in the second slot when the cam bar retainer is retracted to a post-fired proximal position, wherein the engagement of the detent in the second slot prevents distal movement of the cam bar retainer. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification