David A. Nicholas

TL;DR: In this paper, the authors describe a surgical device for cutting and stapling a section of tissue, which includes an anvil mechanically attachable to the housing and moveable relative to the house between an open position and a closed position.

TL;DR: In this article, a carriage assembly for controlling a steering wire steering mechanism within a flexible shaft, for use in gastrointestinal tract surgery, comprises a plurality of selectable engageable motors, including two drive motors for selectably rotating drive shafts of a surgical attachement, two steering motors mechanically communicating with corresponding pulleys around which are coiled directional steering wires communicating with a rigid flexible shaft to enable the selective direction of the flexible shaft.

TL;DR: In this article, a surgical device is provided, the surgical device including a first driver for performing a first movement function; a second driver for conducting a second movement function, and a first rotatable drive shaft configured, upon actuation, to cause selective engagement of one of the first and second drivers with a second rotable drive shaft.

TL;DR: In this paper, a surgical device is provided that includes a jaw portion, having a first jaw in opposed correspondence with a second jaw, the second jaw including a surgical member, and the surgical member may be prevented from moving within the second joint unless the first jaw is in a closed position relative to the second.

TL;DR: In this paper, an adapter assembly is provided for selectively interconnecting a surgical end effector that is configured to perform at least a pair of functions and a surgical device configured to actuate the end-effector.