Surgical instrument with articulating shaft with rigid...

Details Surgical instrument with articulating shaft with rigid... Surgical instrument with articulating shaft with rigid...

2005-09-29

2008-11-25

Rada, Rinaldi I. (Department: 3721)

Elongated-member-driving apparatus

Surgical stapler

With magazine

C227S180100, C227S019000

Reexamination Certificate

active

07455208

ABSTRACT:
A surgical stapling and severing instrument particularly suited to endoscopic use includes a proximal portion that is manipulated external to a patient to position an attached elongate shaft and end effector to a desired surgical site inside of the patient. An articulation joint pivotally attaches the end effector to the elongate shaft to give further clinical flexibility in reaching tissue at a desired angle. A firing bar translates within the elongate shaft and articulates through the articulation joint with a reduced force to fire, supported within a knife slot formed in a link that pivots at both ends, thereby reducing the radius of curvature of the firing bar by half at a particular location. One version includes a link that connects across portions of a closure sleeve assembly and another version includes a link that connects proximal and frame ground portions.

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