Abstract: Surgical instruments and/or fastener apparatuses comprising an end effector with a pair of jaws pivoted at a proximal end thereof and movable between an open and closed position. At least one of the jaws may comprise a channel for receiving a cartridge containing a plurality of surgical fasteners. Also, an electrically powered actuator may be for deploying the surgical fasteners and may comprise a power source and a motor. An activation mechanism may be attached to the handle to move the pair of jaws from the open to the closed position and to activate the actuator. A lockout mechanism may be configured to permit current to flow from the power source to the motor when the pair of jaws is in the closed position and to prevent current from flowing to the power source to the motor when the pair of jaws is in the open position.

Abstract: A surgical instrument is disclosed. The surgical instrument includes a control unit and a staple cartridge including a transponder. The control unit is configured to transmit a first wireless signal to the transponder and to receive a second wireless signal from the transponder to determine one of a first electronic state and a second electronic state of the transponder based on the second wireless signal.

Abstract: A swimming pool cleaning device having a first portion and a second portion obliquely offset from each other. The first portion has a clip assembly for adapting into a conventional swimming pool cleaning pole. The second portion has a hollow with a large aperture and a slit aperture where the hollow is gradually converged towards the slit aperture. The second portion also has a nozzle assembly extended to the large aperture for adapting a conventional water hose such that water from the water hose can flow through the large aperture into the hollow. People can use the cleaning pole to control the underwater movement and orientation of the cleaning device. Pressurized water supplied by the water hose will pass through the converged hollow of the cleaning device and spurt out of the slit aperture. This pressurized and intensified water current directly cleans the submerged swimming pool surfaces.