18912805. ROBOTIC OR POWERED SURGICAL STAPLER WITH PREDICTIVE STAPLING END STOP (Covidien LP)
ROBOTIC OR POWERED SURGICAL STAPLER WITH PREDICTIVE STAPLING END STOP
Organization Name
Inventor(s)
David N. Fowler of Cheshire CT US
Matthew S. Eschbach of Cheshire CT US
ROBOTIC OR POWERED SURGICAL STAPLER WITH PREDICTIVE STAPLING END STOP
This abstract first appeared for US patent application 18912805 titled 'ROBOTIC OR POWERED SURGICAL STAPLER WITH PREDICTIVE STAPLING END STOP
Original Abstract Submitted
A powered or robotic surgical stapler includes a loading unit having an end effector with an anvil and staple cartridge. A drive shaft disposed in the loading unit is actuated by one or more motors. The drive shaft approximates the anvil and advances a knife and a sled to eject a plurality of staples from the cartridge. A position sensor and a torque or current draw sensor measure operation of the motor and a processor determines an initial peak in the torque or current. The processor then calculates a stop position from the drive shaft based on a motor position corresponding to the initial peak and actuates the drive shaft until it reaches the stop position, which occurs prior to the drive shaft reaching a mechanical limit of the drive shaft.