Surgical stapling instrument control means

Details Surgical stapling instrument control means Surgical stapling instrument control means

A - Human Necessities

61

B

128/122

A61B 17/04 (2006.01)

Patent

CA 1179231

ABSTRACT OF THE INVENTION A surgical stapling instrument comprising a handle and a trigger pivotally attached and on compression internal to the handle has been invented. The forward portion of the handle contains: a track; a plurality of staples loaded and staple advancing means carried on the track; a track cover mounted onto the track; and an anvil surface mounted and a first bias means movably mounted on the cover. The anvil surface terminates in a perpendicular flange. The forwardmost staple is adjacent the anvil surface. A retainer spring mounted on the anvil surface or a leaf spring on the track supports the staple and separates it from the perpendicular flange. The staple is formed on the flange. A surgical stapling control means comprises a multi-toothed ratchet on the rearward portion of the trigger; at least one guide pin attached to the initial end of the ratchet; a nonpivoting pawl attached to the rearward portion of the handle to coordinate with the ratchet; and guide means adjacent the rearward portion of the handle to coordinate with and provide tension to the guide pins. Alternatively, the control means comprise a multi-toothed ratchet on the rearward portion of the trigger to coordinate with the ratchet; at least one guide pin attached to the initial end of the pawl, and guide means adjacent the rearward portion of the handle to coordinate with and provide tension to the guide pin.

440869

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