Abstract: A surgical instrument including a system for stopping a beam of the surgical instrument from impacting a distal pin when reversing a knife is disclosed. A knife assembly of the surgical instrument comprises the knife, the beam, and a firing nut. A firing lead screw can drive the firing nut distally and proximally. A firing screw compression spring extends along the firing lead screw and applies a load proximally on the firing nut when the firing nut is driven toward a distal end of the firing lead screw.

Abstract: A system for preventing unwanted tissue migration in surgical staplers includes a surgical stapler having an end effector including an upper jaw and a lower jaw. A distal end of the upper jaw is connected to a distal end of the lower jaw, and a proximal end of the upper jaw is connected to a proximal end of the lower jaw. First and second tissue stops are formed on the distal and proximal ends of the lower jaw, respectively. The second tissue stop and the proximal end of the upper jaw define a no cut zone when the surgical stapler is in an open position. The surgical stapler also includes a tissue cutting device disposed within the lower jaw for resecting tissue. The system also includes a warning, blocking, impeding, or barrier forming device for preventing the unwanted migration of tissue into the no tissue zone.

Abstract: A clamp for a medical procedure includes a first clamp member, a second clamp member, a hinge, a biasing member, a shaft, and an actuator. The hinge couples the first ends of the first and second clamp members such that the first clamp member is pivotable relative to the second clamp member. The biasing member couples the second ends of the first and second clamp members and is configured to apply a clamping force. The distal end of the shaft and the biasing member are fixedly coupled with at least one of the first clamp member or the second clamp member for a duration of the medical procedure. The actuator is operatively coupled with the biasing member such that the actuator selectively tensions the biasing member to provide the clamping force.

Abstract: An end effector includes an anvil and a cartridge. The anvil can include a plurality of staple pockets positioned on an anvil face. The cartridge can be configured to retain a plurality of staples. Each of the plurality of staples includes a first staple leg, a second staple leg, and a crown connecting the first staple leg and the second staple leg, and each has an open staple configuration where the first staple leg and the second staple leg are generally perpendicular to a longitudinal axis of the crown and a closed staple configuration where a first tip of the first staple leg is bent in a first direction away from the longitudinal axis of the crown, and a second tip of the second staple leg is bent in a second direction away from the longitudinal axis of the crown, the first direction being different than the second direction.

Abstract: A propeller assembly is provided in which the propeller blades are adjustable both rotatably and longitudinally. Pitch angle of the propeller blades may be adjusted by rotating the blades in the hub of the assembly. The outer diameter of the propeller blades may be adjusted by sliding the shafts of the blades into the hub of the assembly to a desired position and locking the shafts thereat by means of set collars. The hub of this propeller assembly is split providing for disassembly and removal of the entire propeller assembly from the drive shaft without removing inboard or outboard shaft bearings or other components. The entire assembly is specially designed for simplified construction by the average amateur homebuilder or hobbyist using only a hack saw, drill press and grinder. No casting, welding or machining is necessary.

Abstract: Successive samples are taken periodically from a body of liquid with the aid of pressurized fluid serving as both timing medium and sample propellant. Alternative high-pressure and low-pressure paths for the fluid correspond to high-lift and low-lift uses in sampling apparatus adjustable as to interval between successive samples and duration of taking of each sample, as well as convertible between levels of sample lift.

Abstract: An aircraft having a major longitudinal strength structure generally centralized in the vertical mid-plane. Shallow V-shaped wing panels are secured to the longitudinal strength structure, one at the top and one at the bottom to define a rhombic cellular configuration. Control linkages are provided, positioned and connected to act as stays between paired of upper and lower wing panels.