Surgical stapling device
First Claim
1. A surgical stapling device comprising:
- an elongated body portion defining a longitudinal axis;
a tool assembly pivotally supported at the distal end of the elongated body portion about a pivot axis, the tool assembly including an anvil assembly and a cartridge assembly housing a plurality of staples, the anvil assembly and cartridge assembly being movably mounted in relation to one another between open and closed positions;
the cartridge assembly including a plurality of pushers corresponding to the plurality of staples, and a sled having cam wedges for interacting with the pushers to drive the plurality of staples toward the anvil assembly, at least some of the cam wedges being offset with respect to at least some other cam wedges;
a flexible drive assembly having a distal end configured to translate through the cartridge assembly to eject the staples therefrom, the flexible drive assembly being bendable relative to the longitudinal axis when the tool assembly pivots;
a first support member positioned adjacent the pivot axis on a side of the flexible drive assembly, the first support member having a first end fixedly attached to the tool assembly and a second end fixedly attached to the elongated body portion; and
a second support member on an opposite side of the flexible drive assembly, the second support member lengthening when the tool assembly pivots in a second direction.
2 Assignments
0 Petitions
Accused Products
Abstract
A surgical stapling device for sequentially applying a plurality of fasteners to body tissue and simultaneously incising tissue is provided. The surgical stapling device is adapted to receive disposable loading units having staples in linear rows whose length can be between about 30 mm and 60 mm. The disposable loading unit includes a proximal body portion, a mounting assembly and a tool assembly. The mounting assembly is secured to the proximal end of the tool assembly and pivotally mounted about a pivot axis to the distal end of the proximal body portion. A support member or blow-out plate assembly is positioned on opposite sides of the pivot avis and extends between the proximal body portion and the mounting assembly.
389 Citations
20 Claims
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1. A surgical stapling device comprising:
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an elongated body portion defining a longitudinal axis; a tool assembly pivotally supported at the distal end of the elongated body portion about a pivot axis, the tool assembly including an anvil assembly and a cartridge assembly housing a plurality of staples, the anvil assembly and cartridge assembly being movably mounted in relation to one another between open and closed positions; the cartridge assembly including a plurality of pushers corresponding to the plurality of staples, and a sled having cam wedges for interacting with the pushers to drive the plurality of staples toward the anvil assembly, at least some of the cam wedges being offset with respect to at least some other cam wedges; a flexible drive assembly having a distal end configured to translate through the cartridge assembly to eject the staples therefrom, the flexible drive assembly being bendable relative to the longitudinal axis when the tool assembly pivots; a first support member positioned adjacent the pivot axis on a side of the flexible drive assembly, the first support member having a first end fixedly attached to the tool assembly and a second end fixedly attached to the elongated body portion; and a second support member on an opposite side of the flexible drive assembly, the second support member lengthening when the tool assembly pivots in a second direction.
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2. A surgical stapling device comprising:
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an elongated body portion defining a longitudinal axis; a tool assembly pivotally supported at the distal end of the elongated body portion about a pivot axis, the tool assembly including an anvil assembly and a cartridge assembly housing a plurality of staples, the anvil assembly and cartridge assembly being movably mounted in relation to one another between open and closed positions; the cartridge assembly including a plurality of pushers corresponding to the plurality of staples, and a sled having cam wedges for interacting with the pushers to drive the plurality of staples toward the anvil assembly, at least some of the cam wedges being offset with respect to at least some other cam wedges; a flexible drive assembly having a distal end configured to translate through the cartridge assembly to eject the staples therefrom, the flexible drive assembly being bendable relative to the longitudinal axis when the tool assembly pivots; a first support member positioned adjacent the pivot axis on a side of the flexible drive assembly, the first support member having a first end fixedly attached to the tool assembly and a second end fixedly attached to the elongated body portion; and a limit member positioned about the U-shaped portion to limit the extent to which the U-shaped portion can flex.
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3. A surgical stapling device comprising:
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an elongated body portion defining a longitudinal axis; a tool assembly pivotally supported at the distal end of the elongated body portion about a pivot axis, the tool assembly including an anvil assembly and a cartridge assembly housing a plurality of staples, the anvil assembly and cartridge assembly being movably mounted in relation to one another between open and closed positions; the cartridge assembly including a plurality of pushers corresponding to the plurality of staples, and a sled having cam wedges for interacting with the pushers to drive the plurality of staples toward the anvil assembly, at least some of the cam wedges being offset with respect to at least some other cam wedges; a flexible drive assembly having a distal end configured to translate through the cartridge assembly to eject the staples therefrom, the flexible drive assembly being bendable relative to the longitudinal axis when the tool assembly pivots; and a first support member positioned adjacent the pivot axis on a side of the flexible drive assembly, the first support member having a first end fixedly attached to the tool assembly and a second end fixedly attached to the elongated body portion, wherein the first support member has at least one end that has a J-shaped member.
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4. A surgical stapling device comprising:
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an elongated body portion defining a longitudinal axis; a tool assembly pivotally supported at the distal end of the elongated body portion about a pivot axis, the tool assembly including an anvil assembly and a cartridge assembly housing a plurality of staples, the anvil assembly and cartridge assembly being movably mounted in relation to one another between open and closed positions; the cartridge assembly including a plurality of pushers corresponding to the plurality of staples, and a sled having cam wedges for interacting with the pushers to drive the plurality of staples toward the anvil assembly, at least some of the cam wedges being offset with respect to at least some other cam wedges; a flexible drive assembly having a distal end configured to translate through the cartridge assembly to eject the staples therefrom, the flexible drive assembly being bendable relative to the longitudinal axis when the tool assembly pivots; and a first support member positioned adjacent the pivot axis on a side of the flexible drive assembly, the first support member having a first end fixedly attached to the tool assembly and a second end fixedly attached to the elongated body portion, wherein the first support member has a central portion defining an opening allowing the first support member to lengthen when the tool assembly pivots. - View Dependent Claims (5, 6)
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7. A surgical stapling device comprising:
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an elongated body portion defining a longitudinal axis; a tool assembly pivotally supported at the distal end of the elongated body portion about a pivot axis; a flexible drive assembly having a distal end configured to translate through the tool assembly to facilitate discharge of surgical fasteners therefrom, the flexible drive assembly being bendable relative to the longitudinal axis when the tool assembly pivots; a first support member positioned adjacent the pivot axis on a first side of the flexible drive assembly, the first support member being configured and dimensioned to lengthen when the tool assembly pivots in a first direction; and a second support member positioned adjacent the pivot axis on a second side of the flexible drive assembly opposite the first side, the second support member being configured and dimensioned to lengthen when the tool assembly pivots in a second direction opposite the first direction. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification