Surgical stapler with mechanisms for reducing the firing force

Details Surgical stapler with mechanisms for reducing the firing force Surgical stapler with mechanisms for reducing the firing force

A - Human Necessities

61

B

A61B 17/068 (2006.01) A61B 17/072 (2006.01) A61B 17/24 (2006.01)

Patent

CA 2546928

A surgical stapler comprising an anvil with specially shaped surfaces; and a cartridge retention portion having a staple housing enclosing a plurality of staples, staple drivers, and a plurality of pushers movable in a firing direction and having cam surfaces. The staple drivers each have a surface for engaging the cam surface of one of the pushers to eject the staples and press the staples against the specially formed surfaces forming and closing the staples in tissue clamped between the staple housing and anvil. A firing rod has proximal and distal portions for transmitting a firing force along the firing rod from a firing handle to the pushers to move the pushers in the firing direction. The firing handle engagement surface being aligned with the proximal portion of the firing rod so that the firing force is transmitted directly along the proximal portion.

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