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

Claim 0:
1. 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, wherein a distal end of the firing lead screw is coupled to a bushing, 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, and wherein the firing lead screw has an unthreaded portion extending between the bushing and the threaded portion; and
(v) a firing screw compression spring extending along the firing lead screw, wherein the firing screw compression spring is positioned between the bushing and the firing nut.