Surgical instrument and cartridge for use therewith
First Claim
1. A cartridge assembly for use with a surgical instrument, the cartridge assembly comprising:
- a cartridge housing having a plurality of biasing members thereon;
a cartridge configured for reception at least partially within the cartridge housing, the cartridge including a plurality of fasteners at least partially therein, the cartridge having a plurality of pockets, each fastener being ejectable from a corresponding pocket, the cartridge having a plurality of chambers therein, wherein each chamber is adjacent a pocket and is configured to store at least one fastener at least partially therein, and wherein at least one fastener is movable from the chamber to the pocket; and
a plurality of pushers, wherein each pusher is configured to engage at least one corresponding fastener, at least one pusher including at least one cam surface thereon;
wherein each biasing member urges at least one corresponding fastener toward the corresponding pocket.
3 Assignments
0 Petitions
Accused Products
Abstract
A cartridge assembly is disclosed. The cartridge assembly comprises a cartridge housing and a cartridge. The cartridge housing has a plurality of biasing members thereon. The cartridge is configured for reception at least partially within the cartridge housing. The cartridge includes a plurality of fasteners at least partially therein. The cartridge has a plurality of pockets. Each fastener is ejectable from a corresponding pocket. The cartridge has a plurality of chambers, and each chamber is adjacent a pocket and configured to store at least one fastener at least partially therein. At least one fastener is movable from the chamber to the pocket. The cartridge includes a plurality of pushers, where each pusher is configured to engage at least one corresponding fastener. At least one pusher includes at least one cam surface thereon. Each biasing member urges at least one corresponding fastener toward the corresponding pocket.
1616 Citations
17 Claims
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1. A cartridge assembly for use with a surgical instrument, the cartridge assembly comprising:
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a cartridge housing having a plurality of biasing members thereon; a cartridge configured for reception at least partially within the cartridge housing, the cartridge including a plurality of fasteners at least partially therein, the cartridge having a plurality of pockets, each fastener being ejectable from a corresponding pocket, the cartridge having a plurality of chambers therein, wherein each chamber is adjacent a pocket and is configured to store at least one fastener at least partially therein, and wherein at least one fastener is movable from the chamber to the pocket; and a plurality of pushers, wherein each pusher is configured to engage at least one corresponding fastener, at least one pusher including at least one cam surface thereon; wherein each biasing member urges at least one corresponding fastener toward the corresponding pocket. - View Dependent Claims (2, 3, 4, 5)
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6. A loading unit configured for engagement with a surgical instrument, the loading unit comprising:
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a proximal body portion defining a longitudinal axis; a tool assembly disposed in mechanical cooperation with the proximal body portion; and a cartridge assembly disposed in mechanical cooperation with the tool assembly, the cartridge assembly comprising; a cartridge housing having a plurality of biasing members thereon; a cartridge configured for reception at least partially within the cartridge housing, the cartridge including a plurality of fasteners at least partially therein, the cartridge having a plurality of pockets, each fastener being ejectable from a corresponding pocket, the cartridge having a plurality of chambers therein, wherein each chamber is adjacent a pocket and is configured to store at least one fastener at least partially therein, and wherein at least one fastener is movable from the chamber to the pocket; a plurality of pushers, wherein each pusher is configured to engage a corresponding fastener; and wherein each biasing member urges at least one corresponding fastener towards the corresponding pocket; and a driver disposed in mechanical cooperation with the cartridge assembly, the driver being movable substantially parallel to the longitudinal axis into engagement with the pushers. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A surgical instrument, comprising:
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a handle assembly including a movable handle; a firing rod disposed in mechanical cooperation with the movable handle; an endoscopic portion extending distally from the handle assembly; and a cartridge assembly disposed adjacent a distal end of the endoscopic portion, the cartridge assembly comprising; a cartridge housing having a plurality of biasing members; and a cartridge configured for reception at least partially within the cartridge housing, the cartridge including a plurality of fasteners at least partially therein, the cartridge having a plurality of pockets, each fastener being ejectable from a corresponding pocket, the cartridge having a plurality of chambers therein, wherein each chamber is adjacent a pocket and is configured to store at least one fastener at least partially therein, and wherein at least one fastener is movable from the chamber to the corresponding pocket; and a plurality of pushers, wherein each pusher is configured to engage a corresponding fastener; wherein each biasing member urges at least one corresponding fastener toward the corresponding pocket, and wherein distal advancement of the firing rod causes sequential ejection of at least some of the fasteners.
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17. A surgical stapling instrument, comprising:
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a cartridge assembly having a cartridge body, a plurality of pushers supporting a plurality of fasteners in the cartridge body, and a driver longitudinally movable through the cartridge body in distal and proximal directions, the pushers having first cam surfaces and second cam surfaces; and an anvil assembly having fastener forming surfaces; the driver having an upper portion and a lower portion, the upper portion contacting the second cam surfaces sequentially when the driver is moved in the proximal direction, and the lower portion of driver contacting the first cam surfaces when the driver is moved in the distal direction.
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Specification