A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
128/122
A61B 17/04 (2006.01) A61B 17/068 (2006.01)
Patent
CA 1174932
28,283 TITLE SURGICAL STAPLING INSTRUMENT AND CONTROL MEANS ABSTRACT 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 perpendic- ular flange. The staple is formed on the flange. The forward portion of the handle also contains a guide block which is mounted on the track cover adjacent the anvil surface. A forming blade and a second bias means are movably mounted on the guide block. The form- ing blade and the trigger have coordinating surfaces. A surgical stapling control means has also been invented. The control means comprise a mult-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.
373775
Campbell Jay E.
Li Lehmann K.
Reichmann Richard H.
American Cyanamid Company
Smart & Biggar
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