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Surgical instrument with modular motor

  • US 9,504,520 B2
  • Filed: 06/06/2013
  • Issued: 11/29/2016
  • Est. Priority Date: 06/06/2013
  • Status: Active Grant
First Claim
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1. An apparatus for operating on tissue, the apparatus comprising:

  • (a) a handpiece, wherein the handpiece presents a hollow interior and an opening;

    (b) an elongate shaft, wherein the elongate shaft extends distally from the handpiece, and wherein the elongate shaft comprises a distal end;

    (c) an end effector, wherein the end effector is disposed at the distal end of the elongate shaft, wherein the end effector comprises a first jaw and a second jaw, and wherein the first jaw is selectively pivotable toward and away from the second jaw;

    (d) a motor assembly, wherein the motor assembly comprises;

    i. a motor, andii. a drive gear, wherein the drive gear presents a first plurality of teeth, and wherein the motor is operable to drive rotation of the drive gear; and

    (e) a first member, wherein the first member comprises a first end and a second end, wherein the first member is rotatable about a first axis located between the first end and the second end, wherein the first axis extends transversely relative to the first member, wherein the first end of the first member is associated with the drive gear, wherein the drive gear is rotatable about an axis that is transverse to the first axis to cause rotation of the first member about the first axis;

    (f) a firing beam, wherein the second end of the first member is associated with the firing beam; and

    (g) a rack, wherein the rack is proximally movable to cause pivoting of the first member in a first direction, thereby causing distal translation of the firing beam relative to the elongate shaft, wherein the rack is distally movable to cause pivoting of the first member in a second direction, thereby causing proximal translation of the firing beam relative to the elongate shaft.

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