Cartridge with locking knife for a curved cutter stapler
First Claim
1. A surgical instrument adapted for applying a plurality of surgical fasteners to body tissue, the surgical instrument comprising:
- a cartridge module including a cartridge housing containing a plurality of surgical fasteners and a knife, the cartridge module includes a driver disposed to push surgical fasteners out of the cartridge housing;
a firing mechanism associated with the cartridge housing for ejecting the surgical fasteners and the knife from the cartridge housing; and
the knife includes a detent disposed to contact a mating detent of the cartridge module during longitudinal travel of the knife thereby preventing undesired forward and rearward motion of the knife;
the driver includes a detent disposed to contact at least one mating detent formed on the cartridge module for preventing undesired movement of the driver; and
wherein the cartridge housing includes a cartridge slot through which the detent of the knife extends, the cartridge slot includes first and second flexible fingers molded into the side of the cartridge housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A surgical instrument adapted for applying a plurality of surgical fasteners to body tissue includes a cartridge module having a cartridge housing containing a plurality of surgical fasteners and a knife. The cartridge module includes a driver disposed to push surgical fasteners out of the cartridge housing. The instrument also includes a firing mechanism associated with the cartridge housing for ejecting the surgical fasteners and the knife from the cartridge housing. The knife includes a detent disposed to contact a mating detent of the cartridge module during longitudinal travel of the knife thereby preventing undesired forward and rearward motion of the knife. The driver includes a detent disposed to contact at least one mating detent formed on the cartridge module.
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Citations
31 Claims
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1. A surgical instrument adapted for applying a plurality of surgical fasteners to body tissue, the surgical instrument comprising:
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a cartridge module including a cartridge housing containing a plurality of surgical fasteners and a knife, the cartridge module includes a driver disposed to push surgical fasteners out of the cartridge housing; a firing mechanism associated with the cartridge housing for ejecting the surgical fasteners and the knife from the cartridge housing; and the knife includes a detent disposed to contact a mating detent of the cartridge module during longitudinal travel of the knife thereby preventing undesired forward and rearward motion of the knife; the driver includes a detent disposed to contact at least one mating detent formed on the cartridge module for preventing undesired movement of the driver; and wherein the cartridge housing includes a cartridge slot through which the detent of the knife extends, the cartridge slot includes first and second flexible fingers molded into the side of the cartridge housing. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A surgical instrument adapted for applying a plurality of surgical fasteners to body tissue, the surgical instrument comprising:
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a cartridge module including a cartridge housing containing a plurality of surgical fasteners and a knife, the cartridge module includes a driver disposed to push surgical fasteners out of the cartridge housing; a firing mechanism associated with the cartridge housing for ejecting the surgical fasteners and the knife from the cartridge housing; means for preventing undesired forward and rearward motion of the knife to prevent the knife from inadvertently moving; and means for preventing undesired movement of the driver. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A surgical instrument adapted for applying a plurality of surgical fasteners to body tissue, the surgical instrument comprising:
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a cartridge module including a cartridge housing containing a plurality of surgical fasteners and a knife, the cartridge module includes a driver disposed to push surgical fasteners out of the cartridge housing; a firing mechanism associated with the cartridge housing for ejecting the surgical fasteners and the knife from the cartridge housing; means for preventing undesired forward and rearward motion of the knife to prevent the knife from inadvertently moving; and wherein the driver includes a prefired position and a retracted position and means are operatively associated with the driver for securing the driver in the prefired position and means are operatively associated with the driver for securing the driver in the retracted position. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A surgical instrument adapted for applying a plurality of surgical fasteners to body tissue, the surgical instrument comprising:
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a cartridge module including a cartridge housing containing a plurality of surgical fasteners and a knife, the cartridge module includes a driver disposed to push surgical fasteners out of the cartridge housing; a firing mechanism associated with the cartridge housing for ejecting the surgical fasteners and the knife from the cartridge housing; means for preventing undesired forward and rearward motion of the knife to prevent the knife from inadvertently moving; and wherein the driver includes a prefired position and a retracted position and means are operatively associated with the driver for securing the driver in the prefired position and for securing the driver in the retracted position. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification