Surgical Forceps Including Pulley Blade Reverser Mechanism

An actuation assembly configured for use with a forceps, the actuation assembly comprising:

• an actuator configured for selectively translating a blade between a retracted position and an extended position;
• a shear pin defining a pre-determined load limit coupling the actuator to a cable loop;
• a blade holder coupled to the cable loop and having the blade disposed at a distal end thereof;
• at least one pulley operably coupled to the cable such that translating the actuator proximally translates the blade distally to the extended position;
• and
• wherein, when a force on the blade exceeds the pre-determined load limit, the shear pin disengages the actuator from the cable such that translating the actuator proximally no longer translates the blade distally.

An actuation assembly configured for use with a forceps, the actuation assembly comprising:

• an actuator configured for selectively translating a blade between a retracted position and an extended position;
• a compression spring coupling the actuator to a cable loop;
• a blade holder coupled to the cable loop and having the blade disposed at a distal end thereof;
• at least one pulley operably coupled to the cable such that translating the actuator proximally translates the blade distally to the extended position;
• and
• wherein, the compression spring is compressible in response to a load on the blade such that, when compressed, the compression spring absorbs at least a portion of the load on the blade and thereby reduces the load on the blade.