Patent ID: 11944503
Assignee: STANDARD BARIATRICS, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 17:
18. A surgical instrument, comprising:
an end effector, wherein the end effector includes:
(i) an upper jaw the upper jaw including a proximal end and a distal end;
(ii) a lower jaw, the lower jaw including a proximal end and a distal end, wherein the distal end of the upper jaw is connected to the distal end of the lower jaw, and wherein the proximal end of the upper jaw is connected to the proximal end of the lower jaw;
(iii) a knife assembly comprising a knife, a beam, and a firing nut, wherein the beam is coupled to the firing nut;
(iv) a firing lead screw having a threaded portion and unthreaded portion, wherein rotation of the firing lead screw in a first direction proximally drives the firing nut along the threaded portion and rotation of the firing lead screw in a second direction distally drives the firing nut along the threaded portion towards the unthreaded portion; and
(v) a firing screw compression spring extending along the firing lead screw, wherein the compression spring applies a load proximally on the firing nut when the firing nut is driven onto the unthreaded portion.